The Pluto ++ Event Generator. Ingo Fröhlich for the HADES collaboration

Size: px
Start display at page:

Download "The Pluto ++ Event Generator. Ingo Fröhlich for the HADES collaboration"

Transcription

1 The Pluto ++ Event Generator Ingo Fröhlich for the HADES collaboration

2 Outline Motivation Pluto: event generator for hadronic interactions HADES High Acceptence DiElectron Spectrometer Examples: η production in pp collisions, heavy ion reactions Sampling models: (heavy) resonances, virtual photons Objects & user interface Macro examples Summary & outlook

3 What is Pluto? In simple terms: PLUTO is a ROOT-based framework for implementing customized event generators: object-oriented (C++), modular, flexible, extensible fast simulations (kinematics, decays) filters (e.g. acceptances, efficiencies) no transport through media, no geometry, no field! PLUTO designed by Marios Kagarlis (GSI 2000/2001) Documentation at www-hades.gsi.de/computing/pluto/html/plutoindex.html

4 Why we need Pluto? Example: η case Production of η dominated by the N*(1535) pp pn* ppη ppγγ* ppγe+e- Each step involves sophisticated physics N* pη : At threshold: strong dependence of width(mass) Relativistic Breit-Wigner ppη Decay plane alignment (= 3Euler angles) possible pp final state interaction η γγ*: Form factor (=mass of virtual photon) γ* e+ e - : Decay angles (=virtual photon spin) η Dalitz decay background for HADES

5 Thermal model Elementary collisions & heavy ion reactions in one tool Pluto Thermal model: Particles produced with Boltzmann distribution Options: 2 temperatures, radial flow Anisotropic sampling dn d 1 A 2 cos 2 cm A 4 cos 2 cm Broad mesons & resonance d 2 N dedm Bolzmann E BreitWigner M, E M Mass sampling ρ η E dn de pee T A 1, A 2, T 1, T 2 are free parameters π

6 Mass sampling of hadrons Spectral shape of collision products (e.g. N*1535): Breit Wigner dn dm M 2 tot M M 2 M M 2 2 tot M Decay into stable hadrons N* pπ M 0,m 1,m 2 M = 0 M 0 M q q 0 2l 1 q 2 p 2 q 2 2, tot= i Unstable products: fold & integrate over m m m 2 i = mmin dn dm p cm m, m 1, m 2 m2 m,m 1 Here, q, q 0 are fixed by m 1,m 2 consequences: have to take all BRs into account recursive width calculation

7 Mass sampling of hadrons PLUTO simulation Total Spectral Shape N* pπ N* pη M [GeV] Spectral shape of collision products (e.g. N*1535) Depends on decay product Allows to setup generic hadronic cocktails

8 Mass sampling of virtual photons Decay η γγ*, γ* e+ e - Driven by HADES physics program η γγ*, γ* e + e - M ee [GeV] [1] Landsberg, Phys.Rep 128 (1985) 301 Smeared & acceptance filtered HADES data: PRL 98, (2007) PLUTO cocktail

9 PLUTO Generator: Structure of Code PData Particle & decay database Recursive Width calculation User interface vs. internal calculations PParticle based on TLorentzVector Result PDecayManager Cocktail front-end PDistributionManager Model objects PReaction Reaction chain e.g. pp pn* ppη ppγγ* ppγe+e- PDecay User class, genbod() call of mass & angular sampling PDistribution Distribution objects

10 PLUTO Generator PChannel PParticle (Daughter) PParticle (Mother) decay() PParticle (Daughter) Main decay done via 2 Classes

11 PParticle & PChannel PParticle(s) Based on TLorentzVector Instantiated in advance, and subsequently updated during the execution of an event loop PChannel single step in a reaction process, parent (elementary or quasi-particle), decay products (daughters) via a specified decay mode Example: N* pη Mass sampling (hardcoded in PData), angular distributions

12 Distribution Interface PChannel PDistributionManager (PDiM) ::decay() Knows all PDistributions which would be possible PDistribution PDistribution PDistribution PDistribution: Keeps decay chain template e.g. grandparent=η, parent=γ*, daughters=e+e- PDistributionManager: all known PDistributions PDistribution: complete control (e.g. multi particle correlations) PChannel::decay() -> Executes PDistribution interface methods

13 PChannel to PDistribution Interface PChannel::decay() PDistribution E.g. initial rotate loop over PDistribution list ::genbod() sample angles and masses or populate phase space loop over PDistribution list ::prepare() ::samplemass() ::sampleangle() ::isvalid() ::checkabort() ::finalize() The complete decay control might be shifted to a PDistribution (or only parts) Here one can cut into phase space distributions Redo the complete PReaction chain E.g. rotate back to lab frame done vs to do

14 PLUTO Generator PChannel PParticle (Daughter) PParticle (Mother) Thermal Model Genbod() PParticle (Daugther+Mother) PParticle (Daughter) Genbod() PReaction PChannel PParticle (Daugther)

15 PLUTO Generator PDecayManager constructs PReactions according to known branching ratios or user wishes PChannel PParticle PParticle PParticle PParticle PReaction PChannel PParticle

16 Example Set up a reaction: simple root-macro example > PReaction r(4.0,"p","p", "p NS11+ [p eta [g dilepton [e+ e-]]]", "eta_dalitz",0,0,0,1); > r.loop( ); Models: η polar angle pp partial waves (but intermediate resonance!) e+e- decay angle p η p θ ee θ θ pp η z z γ* momentum p p e- e+

17 Example New models can easily integrated w/o recompile Pluto > gsystem->compilemacro("fsi.c"); > FSI* fsi_test = new FSI("fsi_test","Just a test..."); > fsi_test->add("p", "DAUGHTER", "proton1"); > fsi_test->add("p", "DAUGHTER", "proton2"); > fsi_test->add("eta","daughter"); > fsi_test->add("?","parent"); > makedistributionmanager()->add(fsi_test); p + p --> p + p + eta Interaction model: fixed-momentum beam Only DistributionManager angular distributions mass-dependent-width Breit-Wigner resonances [permanent] Eta polar angles in pp reactions [permanent] pp alignment in pp reactions [permanent] Just a test... Inherited from PDistribution Runtime template Tagging for FSI.C

18 Summary & Outlook Pluto: from a toy-model to serious model event generator user interface: root-macro for setting up the reaction, control (even include new models!) Realistic mass sampling (hadrons, virt. photons) Heavy ion reactions & consequent decays ToDo PData should have interface (set up BRs, pids) Mass sampling (from PData) to PDistributions Generic file interface (input and output, some work already done)...

19 Backup Slides

20 Motivation Heavy ion reactions up to 2GeV per Nucleon Nucleon-Nucleon interactions up to 3.5 AGeV Low to intermediate energies: Hadron production dominated by resonances Main Program: Measurement of virtual photons via γ* e + e - : Original intention for Pluto: Feasability studies (e.g. beam time proposals) for heavy ion reactions fast event generation Later: Model comparison, acceptance corrections Nuclear matter ρ meson γ e + e -

21 Models and their Implementation Models might be implemented many times Different template (decay chain) Different private options of PXXXDistribution TF1 * pseudoscalar_decay = new TF1("helicity",f_eta_decay,-1,1,1); PAngularDistribution * eta_dilepton_helicity = new PAngularDistribution("eta_dilepton_helicity","Helicity angle of the dilepton decay of eta"); eta_dilepton_helicity->add("dilepton","parent"); eta_dilepton_helicity->add("e+", "DAUGHTER"); eta_dilepton_helicity->add("e-", "DAUGHTER", "primary"); eta_dilepton_helicity->add("eta", "GRANDPARENT", "base_reference"); eta_dilepton_helicity->setanglefunction(pseudoscalar_decay); pdm->add(eta_dilepton_helicity); Particle marker for the PXXXDistribution

22 Control Clear interface to disable single channels and groups of physics (via id. -> no hard coded flag) No need to touch framework code Output of PDistributionManager (pre-defined implementations) PDistributionManager eta_physics Physics about eta production, and decay [X] pp_eta_prod_angle Eta polar angles in pp reactions for direct production [X] pp_ns_eta_prod_angle Eta polar angles in pp reactions via N* [X] pp_eta_pp_align pp alignment in pp reactions for direct eta production [X] pp_ns_eta_pp_align pp alignment in pp reactions for eta production via N* [X] eta_hadronic_decay Eta matrix element for decay into charged pions dilepton_physics Physics about the decay of dileptons [X] eta_dilepton_helicity Helicity angle of the dilepton decay of eta [X] etaprime_dilepton_helicity Helicity angle of the dilepton decay of etaprime [X] pi0_dilepton_helicity Helicity angle of the dilepton decay of pi0...

23 The Freedom of the User The user can apply many changes inside the macro Changing parameters for build-in implementations PDistributionManager *pdist = makedistributionmanager(); PDalitzDistribution *eta_pion_decay = (PDalitzDistribution *) pdist->getdistribution("eta_hadronic_decay"); eta_pion_decay->setslopes(1.072,0.11); //KLOE result Using build-in models Or creating new models

24 η Dalitz Decay e + Distributions in several frames e.g. lepton angle in dilepton rest frame with respect to dilepton momentum vector in meson rest frame... Pseodoscalar: θx, φ X and φ ee isotropic, helicity angle 1+cos²θ ee...but smeared due to momentum distribution γ* X X production plane of source X e θ e ee dilepton decay plane φ e ee θ γ virtual photon plane N* contribution φx γ

25 η Production Background subtraction done for different slices, e.g. polar angles Model-dependent acceptance correction done with PLUTO η CBarrel matrix element N* contribution by DISTO [2] pp alignment missing Distributions of η [1] production consistent with DISTO data [1] F. Balestra at al. (DISTO collaboration), Phys.Rev.C69:064003,2004 [2] I. Fröhlich et al, nucl-ex/

26 η Electromagnetic Form Factor η form factor known [1] Provides exact model to check invariant mass spectrum Acceptance correction: Done with PLUTO η angle, ee helicity angle, pp alignment missing [1] Landsberg, Phys.Rep 128 (1985) 301 preliminary

27 2AGeV Simulation Pluto ++ Thermal model PFireball Model A: trivial sources like π 0, η, ω Model B: with short-lived resonances PRL 98, (2007) model B fails to describe the data!

28 2AGeV Simulation Pluto ++ : Check in-medium contribution Normalized to "trivial" PLUTO cocktail A Interpretation might depend on the PFireball model + decay properties

Pluto: A Monte Carlo Simulation Tool for Hadronic Physics

Pluto: A Monte Carlo Simulation Tool for Hadronic Physics Pluto: A Monte Carlo Simulation Tool for Hadronic Physics,1, L. Cazon Boado 2,, T. Galatyuk 1,2, V. Hejny 3, R. Holzmann 2, M. Kagarlis 2,, W. Kühn 4, J.G. Messchendorp 4,, V. Metag 4, M.A. Pleier 4,,

More information

Pluto: Weight-Based Event Sampling

Pluto: Weight-Based Event Sampling Pluto: Weight-Based Event Sampling I. Fröhlich Institut für Kernphysik, Johann Wolfgang Goethe-Universität, 60486 Frankfurt, Germany. Definitions Sampling distribution/model: Determines the number of events

More information

PoS(Bormio2012)013. K 0 production in pp and pnb reactions. Jia-Chii Berger-Chen

PoS(Bormio2012)013. K 0 production in pp and pnb reactions. Jia-Chii Berger-Chen Excellence Cluster Universe, Technische Universität München E-mail: jia-chii.chen@tum.de The kaon nucleus (KN) interaction in nuclear matter is predicted to be repulsive and dependent from the density.

More information

Hadron Spectroscopy at COMPASS

Hadron Spectroscopy at COMPASS Hadron Spectroscopy at Overview and Analysis Methods Boris Grube for the Collaboration Physik-Department E18 Technische Universität München, Garching, Germany Future Directions in Spectroscopy Analysis

More information

Measurements of the dilepton continuum in ALICE. Christoph Baumann Resonance Workshop, Austin

Measurements of the dilepton continuum in ALICE. Christoph Baumann Resonance Workshop, Austin Measurements of the dilepton continuum in ALICE Christoph Baumann 07.03.2012 Resonance Workshop, Austin ALICE Central Detectors: Inner Tracking System Time Projection Chamber Time-of-Flight Transition

More information

Dilepton Production from Coarse-grained Transport Dynamics

Dilepton Production from Coarse-grained Transport Dynamics Dilepton Production from Coarse-grained Transport Dynamics Stephan Endres (in collab. with M. Bleicher, H. van Hees, J. Weil) Frankfurt Institute for Advanced Studies ITP Uni Frankfurt ECT* Trento Workshop

More information

Neutrino Energy Reconstruction Methods Using Electron Scattering Data. Afroditi Papadopoulou Pre-conference, EINN /29/17

Neutrino Energy Reconstruction Methods Using Electron Scattering Data. Afroditi Papadopoulou Pre-conference, EINN /29/17 Neutrino Energy Reconstruction Methods Using Electron Scattering Data Afroditi Papadopoulou Pre-conference, EINN 2017 10/29/17 Outline Nuclear Physics and Neutrino Oscillations. Outstanding Challenges

More information

Hadronic Transportwith the GiBUU model

Hadronic Transportwith the GiBUU model Hadronic Transport with the GiBUU model Frankfurt Institute for Advanced Studies, Germany Workshop on Nuclear Photoproduction with GLUEX Jlab, April 28, 2016 Outline the GiBUU model basic features and

More information

Study of Excited Baryons with the Crystal-Barrel Detector at ELSA

Study of Excited Baryons with the Crystal-Barrel Detector at ELSA Study of Excited Baryons with the Crystal-Barrel Detector at ELSA V. Credé FSU, Tallahassee, Florida NSF Review Florida State University, 11/15/2007 Outline 1 Introduction 2 Proposal: Determination of

More information

Spectroscopy Results from COMPASS. Jan Friedrich. Physik-Department, TU München on behalf of the COMPASS collaboration

Spectroscopy Results from COMPASS. Jan Friedrich. Physik-Department, TU München on behalf of the COMPASS collaboration Spectroscopy Results from COMPASS Jan Friedrich Physik-Department, TU München on behalf of the COMPASS collaboration 11th European Research Conference on "Electromagnetic Interactions with Nucleons and

More information

A Theoretical View on Dilepton Production

A Theoretical View on Dilepton Production A Theoretical View on Dilepton Production Transport Calculations vs. Coarse-grained Dynamics Stephan Endres (in collab. with M. Bleicher, H. van Hees, J. Weil) Frankfurt Institute for Advanced Studies

More information

Thermal dileptons from coarse-grained transport as probes of hot and dense QCD matter

Thermal dileptons from coarse-grained transport as probes of hot and dense QCD matter Thermal dileptons from coarse-grained transport as probes of hot and dense QCD matter Lunch Club Seminar, Universität Gießen Florian Seck TU Darmstadt in collaboration with T. Galatyuk, R. Rapp & J. Stroth

More information

The Dilepton Probe from SIS to RHIC

The Dilepton Probe from SIS to RHIC The Dilepton Probe from SIS to RHIC Hendrik van Hees Justus-Liebig Universität Gießen April 14, 2010 Institut für Theoretische Physik JUSTUS-LIEBIG- UNIVERSITÄT GIESSEN Hendrik van Hees (JLU Gießen) The

More information

Measuring η π+ π- e+ e- with WASA at COSY. Daniel Coderre Hirschegg 2010

Measuring η π+ π- e+ e- with WASA at COSY. Daniel Coderre Hirschegg 2010 tglied der Helmholtz-Gemeinschaft Measuring η π+ π- e+ e- with WASA at COSY Daniel Coderre Hirschegg 2010 The WASA Detector ~20-170 Degrees ~3-18 Degrees - Internal experiment at COSY ring, Jülich, Germany

More information

Stefan Diehl. 2nd Physics Institute, Justus-Liebig-University Giessen

Stefan Diehl. 2nd Physics Institute, Justus-Liebig-University Giessen CLAS collaboration meeting - JLAB 30.03.2017 Simulation of e p e p π 0 with the CLAS12 simulation and reconstruction / analysis framework Stefan Diehl 2nd Physics Institute, Justus-Liebig-University Giessen

More information

Generalized Partial Wave Analysis Software for PANDA

Generalized Partial Wave Analysis Software for PANDA Generalized Partial Wave Analysis Software for PANDA 39. International Workshop on the Gross Properties of Nuclei and Nuclear Excitations The Structure and Dynamics of Hadrons Hirschegg, January 2011 Klaus

More information

Lepton and Charm Measurements in the First Two Years of RHIC: An Experimental Overview

Lepton and Charm Measurements in the First Two Years of RHIC: An Experimental Overview Lepton and Charm Measurements in the First Two Years of RHIC: An Experimental Overview Ralf Averbeck State University of New York at Stony Brook INT/RHIC Winter Workshop, Seattle, December 13-15, 2002

More information

Project B.5: Hadrons in Nuclear Matter

Project B.5: Hadrons in Nuclear Matter Project B.5: Hadrons in Nuclear Matter Janus Weil, Murat Kaskulov, Ulrich Mosel Institut für Theoretische Physik, JLU Giessen Arbeitstreffen SFB/TR 16 Bochum, 09.09.2010 Outline introduction/motivation

More information

Study of the decays at Wasa-at-COSY. Elisabetta Prencipe on behalf of the Wasa Collaboration MesonNet Workshop, 17th -19th June 2013, Praha

Study of the decays at Wasa-at-COSY. Elisabetta Prencipe on behalf of the Wasa Collaboration MesonNet Workshop, 17th -19th June 2013, Praha Study of the decays at Wasa-at-COSY on behalf of the Wasa Collaboration MesonNet Workshop, 17th -19th June 2013, Praha Outline Introduction The Wasa-at-COSY detector decays in the pd reaction e+e e+e e+e

More information

arxiv: v1 [hep-ex] 22 Jun 2009

arxiv: v1 [hep-ex] 22 Jun 2009 CPC(HEP & NP), 29, 33(X): 1 7 Chinese Physics C Vol. 33, No. X, Xxx, 29 Recent results on nucleon resonance electrocouplings from the studies of π + π p electroproduction with the CLAS detector V. I. Mokeev

More information

Overview and Status of Measurements of F 3π at COMPASS

Overview and Status of Measurements of F 3π at COMPASS g-2 workshop Mainz: Overview and Status of Measurements of F 3π at COMPASS D. Steffen on behalf of the COMPASS collaboration 19.06.2018 sponsored by: 2 Dominik Steffen g-2 workshop Mainz 19.06.2018 Contents

More information

UNIVERSITÀ DEGLI STUDI DI CATANIA

UNIVERSITÀ DEGLI STUDI DI CATANIA UNIVERSITÀ DEGLI STUDI DI CATANIA DOTTORATO DI RICERCA IN FISICA STEFANO SPATARO CHARACTERIZATION OF THE HADES SPECTROMETER IN PP COLLISIONS AT. GEV: ELASTIC SCATTERING AND EXCLUSIVE ETA RECONSTRUCTION

More information

Dileptons in NN and AA collisions

Dileptons in NN and AA collisions Dileptons in NN and AA collisions Hendrik van Hees Goethe-Universität Frankfurt November 28, 2011 Hendrik van Hees (GU Frankfurt) The Dilepton Probe November 28, 2011 1 / 24 Outline 1 Electromagnetic probes

More information

The η-meson Decay Program at WASA-at-COSY

The η-meson Decay Program at WASA-at-COSY Mitglied der Helmholtz-Gemeinschaft The η-meson Decay Program at WASA-at-COSY 31.08.2015 Daniel Lersch for the WASA-at-COSY collaboration Institute for Nuclear Physics The η-meson! " " " # #, (" + " -

More information

Vincent Poireau CNRS-IN2P3, LAPP Annecy, Université de Savoie, France On behalf of the BaBar collaboration

Vincent Poireau CNRS-IN2P3, LAPP Annecy, Université de Savoie, France On behalf of the BaBar collaboration CNRS-IN2P3, LAPP Annecy, Université de Savoie, France On behalf of the BaBar collaboration Moriond QCD, 24 March 2014 1 OUTLINE 9 GeV e - 3.1 GeV e + Recorded 531 fb -1 in total (4S): 433 fb -1 (3S): 30

More information

Low Mass Dimuon Production in Proton-Nucleus Collisions at 400 GeV/c with the NA60 Experiment. Antonio Uras for the NA60 Collaboration

Low Mass Dimuon Production in Proton-Nucleus Collisions at 400 GeV/c with the NA60 Experiment. Antonio Uras for the NA60 Collaboration STRANGENESS in QUARK MATTER Cracow, Poland 18 24 September 2011 Low Mass Dimuon Production in Proton-Nucleus Collisions at 400 GeV/c with the NA60 Experiment Antonio Uras for the NA60 Collaboration INFN

More information

arxiv: v1 [nucl-th] 24 Apr 2016

arxiv: v1 [nucl-th] 24 Apr 2016 Dilepton production with the SMASH model arxiv:1604.07028v1 [nucl-th] 24 Apr 2016 Janus Weil 1, Jan Staudenmaier 1,2, Hannah Petersen 1,2,3 1 Frankfurt Institute for Advanced Studies, 60438 Frankfurt,

More information

Thermal dileptons as fireball probes at SIS energies

Thermal dileptons as fireball probes at SIS energies Thermal dileptons as fireball probes at SIS energies Critical Point and Onset of Deconfinement 2016, Wrocław. Florian Seck TU Darmstadt in collaboration with T. Galatyuk, P. M. Hohler, R. Rapp & J. Stroth

More information

Measurement of virtual photons radiated from Au+Au collisions at E beam = 1.23 AGeV in HADES

Measurement of virtual photons radiated from Au+Au collisions at E beam = 1.23 AGeV in HADES Measurement of virtual photons radiated from Au+Au collisions at E beam = 1.23 AGeV in HADES Szymon Harabasz for the HADES collaboration 1. Motivation 2. Lepton identification 3. Combinatorial background

More information

Studies of Pion Induced Reactions with the HADES Spectrometer Izabela Ciepał for the HADES Collaboration

Studies of Pion Induced Reactions with the HADES Spectrometer Izabela Ciepał for the HADES Collaboration Studies of Pion Induced Reactions with the HADES Spectrometer Izabela Ciepał for the HADES Collaboration Institute of Nuclear Physics PAS 1 Outline 1) Motivation of the HADES experiment, 2) Electromagnetic

More information

The x(1280) Meson in CLAS g11. Ryan Dickson Carnegie Mellon University May 31st, 2010

The x(1280) Meson in CLAS g11. Ryan Dickson Carnegie Mellon University May 31st, 2010 The x(1280) Meson in CLAS g11 Ryan Dickson Carnegie Mellon University May 31st, 2010 The x(1280) Meson in CLAS g11 The f1(1285) & (1295) mesons Differential Cross Sections (preliminary) Dalitz Plot Analysis

More information

Photoabsorption and Photoproduction on Nuclei in the Resonance Region

Photoabsorption and Photoproduction on Nuclei in the Resonance Region Photoabsorption and Photoproduction on Nuclei in the Resonance Region Susan Schadmand Institut für Kernphysik First Workshop on Quark-Hadron Duality Frascati, June 6-8, 2005 electromagnetic probes Hadron

More information

Transition Form Factors of Light Mesons

Transition Form Factors of Light Mesons Transition Form Factors of Light Mesons New Frontiers in QCD 2018 May 28 - June 29, 2018 Yukawa Institute for Theoretical Physics, Kyoto University Susan Schadmand Thanks for workshop invitation YITP Kyoto

More information

Properties of the Λ(1405) Measured at CLAS

Properties of the Λ(1405) Measured at CLAS PANIC 11 Properties of the Λ(145) Measured at CLAS Kei Moriya (Indiana University) advisor: Reinhard Schumacher (Carnegie Mellon University) July 5, 11 Outline 1 Introduction What is the Λ(145)? Chiral

More information

The η-meson Decay Program at WASA-at-COSY

The η-meson Decay Program at WASA-at-COSY Mitglied der Helmholtz-Gemeinschaft The η-meson Decay Program at WASA-at-COSY 15.09.2015 Daniel Lersch for the WASA-at-COSY collaboration XVI International Conference on Hadron Spectroscopy The η-meson!

More information

Jefferson Lab, May 23, 2007

Jefferson Lab, May 23, 2007 e + e - Annihilations into Quasi-two-body Final States at 10.58 GeV Kai Yi, SLAC for the BaBar Collaboration Jefferson Lab, May 23, 2007 5/23/2007 Kai Yi, BaBar/SLAC 1 Outline Introduction First Observation

More information

Recent Results on Spectroscopy from COMPASS

Recent Results on Spectroscopy from COMPASS Recent Results on Spectroscopy from COMPASS Boris Grube Physik-Department E18 Technische Universität München, Garching, Germany Hadron 15 16. September 15, Newport News, VA E COMPASS 1 8 The COMPASS Experiment

More information

Photoproduction of the f 1 (1285) Meson

Photoproduction of the f 1 (1285) Meson Photoproduction of the f 1 (1285) Meson Reinhard Schumacher Ph.D. work of Ryan Dickson, completed 2011 October 21, 2015, CLAS Collaboration meeting Outline What are the f 1 (1285) and η(1295) mesons? Identification

More information

Strangeness Production at SIS: Au+Au at 1.23A GeV with HADES & Microscopic Description by Transport Models

Strangeness Production at SIS: Au+Au at 1.23A GeV with HADES & Microscopic Description by Transport Models Strangeness Production at SIS: Au+Au at 1.23A GeV with HADES & Microscopic Description by Transport Models Timo Scheib Goethe Universität Frankfurt am Main // Outline HADES at SIS Strangeness Production

More information

Sub-threshold strangeness and charm production (in UrQMD)

Sub-threshold strangeness and charm production (in UrQMD) Sub-threshold strangeness and charm production (in UrQMD) Marcus Bleicher and Jan Steinheimer Marcus Bleicher and Jan Steinheimer 1 / 24 Motivation Recent measurements on near and below threshold production.

More information

Amplitude analyses with charm decays at e + e machines

Amplitude analyses with charm decays at e + e machines Amplitude analyses with charm decays at e + e machines Carnegie Mellon University E-mail: jvbennett@cmu.edu Amplitude analyses provide uniquely powerful sensitivity to the magnitudes and phases of interfering

More information

arxiv: v2 [hep-ex] 16 Nov 2007

arxiv: v2 [hep-ex] 16 Nov 2007 Proceedings of the CHARM 2007 Workshop, Ithaca, NY, August 5-8, 2007 1 Recent studies of Charmonium Decays at CLEO H. Muramatsu Department of Physics and Astronomy, University of Rochester, Rochester,

More information

Study of the Electromagnetic Dalitz decay of J/ψ e + e - π 0

Study of the Electromagnetic Dalitz decay of J/ψ e + e - π 0 Study of the Electromagnetic Dalitz decay of J/ψ e + e - π 0 Vindhyawasini Prasad Email: vindy@ustc.edu.cn Department of Modern Physics University of Science & Technology of China Hefei City, Anhui Province,

More information

High Energy Cosmic Ray Interactions

High Energy Cosmic Ray Interactions Forschungszentrum Karlsruhe in der Helmholtz-Gemeinschaft High Energy Cosmic Ray Interactions (Lecture 1: Basics) Ralph Engel Karlsruhe Institute of Technology (KIT) Outline Lecture 1 Basics, low-energy

More information

arxiv: v1 [hep-ph] 31 Jan 2018

arxiv: v1 [hep-ph] 31 Jan 2018 Noname manuscript No. (will be inserted by the editor) Polarization and dilepton angular distribution in pion-nucleon collisions Miklós Zétényi Enrico Speranza Bengt Friman Received: date / Accepted: date

More information

Dipole Response of Exotic Nuclei and Symmetry Energy Experiments at the LAND R 3 B Setup

Dipole Response of Exotic Nuclei and Symmetry Energy Experiments at the LAND R 3 B Setup Dipole Response of Exotic Nuclei and Symmetry Energy Experiments at the LAND R 3 B Setup Dominic Rossi for the LAND collaboration GSI Helmholtzzentrum für Schwerionenforschung GmbH D 64291 Darmstadt, Germany

More information

Studying η-meson Decays with WASA-at-COSY

Studying η-meson Decays with WASA-at-COSY Studying η-meson Decays with WASA-at-COSY Daniel Lersch 1, for the WASA-at-COSY Collaboration 1 Juelich Research Center, Germany Abstract. The η-meson is a unique tool in a way that it provides access

More information

Measurement of Polarization Observables Pz, P s z and P c z in Double-Pion Photoproduction off the Proton

Measurement of Polarization Observables Pz, P s z and P c z in Double-Pion Photoproduction off the Proton Measurement of Polarization Observables Pz, P s z and P c z in Double-Pion Photoproduction off the Proton Yuqing Mao Ph.D. Defense November 10, 2014 Dept. of Physics and Astronomy, USC Supported in part

More information

Part II Particle and Nuclear Physics Examples Sheet 1

Part II Particle and Nuclear Physics Examples Sheet 1 T. Potter Lent/Easter Terms 2017 Part II Particle and Nuclear Physics Examples Sheet 1 Matter and Forces 1. (A) Explain the meaning of the terms quark, lepton, hadron, nucleus and boson as used in the

More information

A Measurement of the Induced polarization of electro-produced Λ(1116) with CLAS

A Measurement of the Induced polarization of electro-produced Λ(1116) with CLAS A Measurement of the Induced polarization of electro-produced Λ(1116) with CLAS Marianna Gabrielyan Florida International University HUGS 2008 Why study electromagnetic production of kaons? Formalism.

More information

Probing the QCD phase diagram with dileptons a study using coarse-grained transport dynamics

Probing the QCD phase diagram with dileptons a study using coarse-grained transport dynamics Probing the QCD phase diagram with dileptons a study using coarse-grained transport dynamics Stephan Endres, Hendrik van Hees, and Marcus Bleicher Frankfurt Institute for Advanced Studies, Ruth-Moufang-Straße

More information

and ' Time-like Transition Form Factors from MAMI

and ' Time-like Transition Form Factors from MAMI and ' Time-like Transition Form Factors from MAMI Institute for Nuclear Physics University Mainz Outline Experimental Setup Short Review of Time-like Transition Form Factors Time-like Transition Form Factor

More information

Dedicated Arrays: MEDEA GDR studies (E γ = MeV) Highly excited CN E*~ MeV, 4 T 8 MeV

Dedicated Arrays: MEDEA GDR studies (E γ = MeV) Highly excited CN E*~ MeV, 4 T 8 MeV Dedicated Arrays: MEDEA GDR studies (E γ = 10-25 MeV) Highly excited CN E*~ 250-350 MeV, 4 T 8 MeV γ-ray spectrum intermediate energy region 10 MeV/A E beam 100 MeV/A - large variety of emitted particles

More information

Contents. What Are We Looking For? Predicted D

Contents. What Are We Looking For? Predicted D Contents D * e S DS e Souvik Das, Anders Ryd Cornell University What Are We Looking For? Predicted D * S D S e e - Rate Decay Modes of D S Used Fitting Soft Electrons Signal Samples Background Samples

More information

MFT: Motivations and Expectations

MFT: Motivations and Expectations Physics Week NFN NF Frascati 18 pril 2012 ntonio Uras for the MFT Working Group yon group @ PN Outline Physics Motivations ow mass and low pt dimuon reach: a unique feature at the H ow pt reach for open

More information

Baryon Spectroscopy at Jefferson Lab What have we learned about excited baryons?

Baryon Spectroscopy at Jefferson Lab What have we learned about excited baryons? Baryon Spectroscopy at Jefferson Lab What have we learned about excited baryons? Volker Credé Florida State University, Tallahassee, FL Spring Meeting of the American Physical Society Atlanta, Georgia,

More information

Studies of pentaquarks at LHCb

Studies of pentaquarks at LHCb Studies of pentaquarks at Mengzhen Wang Center of High Energy Physics, Tsinghua University (For the collaboration) CLHCP 17, Dec nd 17 @Nanjing, China 1 Outline The experiment Studies about pentaquarks

More information

Studies of charmonium production in e + e - annihilation and B decays at BaBar

Studies of charmonium production in e + e - annihilation and B decays at BaBar Studies of charmonium production in e + e - annihilation and B decays at BaBar I. Garzia, INFN Sezione di Ferrara On behalf of the BaBar Collaboration XVI International Conference on Hadron Spectroscopy

More information

The Dilepton Probe from SIS to RHIC

The Dilepton Probe from SIS to RHIC The Dilepton Probe from SIS to RHIC Hendrik van Hees Justus-Liebig Universität Gießen May 13, 2011 Institut für Theoretische Physik JUSTUS-LIEBIG- UNIVERSITÄT GIESSEN Hendrik van Hees (JLU Gießen) The

More information

MESON PRODUCTION IN NN COLLISIONS

MESON PRODUCTION IN NN COLLISIONS MENU 07 11th International Conference on Meson-Nucleon Physics and the Structure of the Nucleon September10-14, 07 IKP, Forschungzentrum Jülich, Germany MESON PRODUCTION IN NN COLLISIONS K. Nakayama a,b,1,

More information

Global polarization of Λ and Λ hyperons in Pb Pb collisions at s NN = 2.76 TeV

Global polarization of Λ and Λ hyperons in Pb Pb collisions at s NN = 2.76 TeV Global polarization of and hyperons in Pb Pb collisions at s NN = 2.76 TeV Maxim Konyushikhin Wayne State University On behalf of the ALICE collaboration March 29, 27 QCD Chirality Workshop 27 Outline

More information

CLEO Results From Υ Decays

CLEO Results From Υ Decays CLEO Results From Υ Decays V. Credé 1 2 1 Cornell University, Ithaca, NY 2 now at Florida State University Tallahassee, FL Hadron 05 Outline 1 Introduction The Υ System CLEO III Detector CLEO III Υ Data

More information

Overview of recent HERMES results

Overview of recent HERMES results Journal of Physics: Conference Series PAPER OPEN ACCESS Overview of recent HERMES results To cite this article: Hrachya Marukyan and 216 J. Phys.: Conf. Ser. 678 1238 View the article online for updates

More information

Searches for Exotics in Upsilon Decays in BABAR

Searches for Exotics in Upsilon Decays in BABAR Searches for Exotics in Upsilon Decays in BABAR Yury Kolomensky UC Berkeley/LBNL For the BABAR Collaboration 14th Lomonosov Conference on Elementary Particle Physics August 24, 2009, Moscow Light Higgs

More information

Problem Set # 2 SOLUTIONS

Problem Set # 2 SOLUTIONS Wissink P640 Subatomic Physics I Fall 007 Problem Set # SOLUTIONS 1. Easy as π! (a) Consider the decay of a charged pion, the π +, that is at rest in the laboratory frame. Most charged pions decay according

More information

BABAR Results on Hadronic Cross Sections with Initial State Radiation (ISR)

BABAR Results on Hadronic Cross Sections with Initial State Radiation (ISR) 1 International Workshop on e+e- Collisions from Phi to Psi (PHIPSI08) Laboratori Nazionali di Frascati April 7-10, 2008 Results on Hadronic Cross Sections with Initial State Radiation (ISR) Johannes Gutenberg-Universität

More information

Institute of High Energy Physics, Chinese Academy of Sciences, 19B Yuanquanlu, Shijingshan district, Beijing, , China

Institute of High Energy Physics, Chinese Academy of Sciences, 19B Yuanquanlu, Shijingshan district, Beijing, , China Institute of High Energy Physics, Chinese Academy of Sciences, 19B Yuanquanlu, Shijingshan district, Beijing, 49, China E-mail: liubj@ihep.ac.cn The BESIII experiment in Beijing takes data in τ-charm domain

More information

International Workshop on Heavy Quarkonium Oct. 2007, DESY Hamburg. Prospects for Panda. Charmonium Spectroscopy

International Workshop on Heavy Quarkonium Oct. 2007, DESY Hamburg. Prospects for Panda. Charmonium Spectroscopy International Workshop on Heavy Quarkonium 17 20 Oct. 2007, DESY Hamburg Prospects for Panda Charmonium Spectroscopy M. Pelizäus (Ruhr Universität Bochum) for the Panda Collaboration 1 FAIR accelerator

More information

Heavy hadron spectroscopy at Belle. Kenkichi Miyabayashi (Nara Women s University) Hadrons and Hadron Interactions in QCD Mar.

Heavy hadron spectroscopy at Belle. Kenkichi Miyabayashi (Nara Women s University) Hadrons and Hadron Interactions in QCD Mar. Heavy hadron spectroscopy at Belle Kenkichi Miyabayashi (Nara Women s University) Hadrons and Hadron Interactions in QCD 2015 2015 Mar. 2 nd 1 Outline Advantage with heavy flavors in hadron spectroscopy

More information

The Quark Parton Model

The Quark Parton Model The Quark Parton Model Quark Model Pseudoscalar J P = 0 Mesons Vector J P = 1 Mesons Meson Masses J P = 3 /2 + Baryons J P = ½ + Baryons Resonances Resonance Detection Discovery of the ω meson Dalitz Plots

More information

Sub Threshold strange hadron production in UrQMD

Sub Threshold strange hadron production in UrQMD Sub Threshold strange hadron production in UrQMD Jan Steinheimer and Marcus Bleicher 10.05.2016 Jan Steinheimer and Marcus Bleicher (FIAS) 10.05.2016 1 / 26 Motivation Recent measurements on near and below

More information

Measurements of Leptonic B Decays from BaBar

Measurements of Leptonic B Decays from BaBar Measurements of Leptonic B Decays from BaBar Gregory Dubois-Felsmann Caltech for the BaBar collaboration ICHEP 2004 Heavy Quark Mesons and Baryons session Overview Motivations for studying leptonic B decays

More information

Charmonium Spectroscopy at BESIII

Charmonium Spectroscopy at BESIII Charmonium Spectroscopy at BESIII Hu Liu (on behalf of the BESIII Collaboration) Institute of High Energy Physics, Beijing, China 8 th QWG @GSI 05-10-2011 Slide 1 Outline Brief Introduction of BEPCII &

More information

Outline: Introduction

Outline: Introduction Electromagnetic radiation in hadronic interactions: from pp to AA collisions Outline: Introduction Lijuan Ruan (Brookhaven National Laboratory) Recent results on dileptons (dielectrons) Recent results

More information

Study of Transitions and Decays of Bottomonia at Belle

Study of Transitions and Decays of Bottomonia at Belle 1 Study of Transitions and Decays of Bottomonia at Belle Saurabh Sandilya University of Cincinnati (On behalf of the Belle Collaboration) Outline Introduction (Bottomonia, KEKB & Belle detector) Transitions

More information

XVII International Conference on Hadron Spectroscopy and Structure - Hadron September, 2017 University of Salamanca, Salamanca, Spain

XVII International Conference on Hadron Spectroscopy and Structure - Hadron September, 2017 University of Salamanca, Salamanca, Spain , L. Tiator and M. Ostrick Institut für Kernphysik, Johannes Gutenberg-Universität Mainz, Germany E-mail: kashevar@uni-mainz.de, tiator@uni-mainz.de, ostrick@uni-mainz.de A phenomenological analysis of

More information

vector mesons in medium: motivation & basic ideas theoretical models & simulation techniques:

vector mesons in medium: motivation & basic ideas theoretical models & simulation techniques: Outline vector mesons in medium: motivation & basic ideas theoretical models & simulation techniques: hadronic transport models (example: GiBUU) coarse graining (with UrQMD) results: light VM in medium

More information

Geometrical Methods for Data Analysis I: Dalitz Plots and Their Uses

Geometrical Methods for Data Analysis I: Dalitz Plots and Their Uses Geometrical Methods for Data Analysis I: Dalitz Plots and Their Uses History of the Dalitz Plot Dalitz s original plot non-relativistic; in terms of kinetic energies applied to the τ-θ puzzle Modern-day

More information

Motivation. Experimental Details. Three-body forces & other nuclear dynamics studied in 3. He(e,e pp)n reactions

Motivation. Experimental Details. Three-body forces & other nuclear dynamics studied in 3. He(e,e pp)n reactions Scottish Universities Physics Alliance Motivation Three-body forces & other nuclear dynamics studied in 3 He(e,e pp)n reactions Analyse e2b data taken at low electron beam energy get significant yield

More information

Di-electron production at ultra-relativistic energies

Di-electron production at ultra-relativistic energies Di-electron production at ultra-relativistic energies J. Manninen 1 & E. Bratkovskaya 1 O. Linnyk 2 & W. Cassing 2 P.B. Gossiaux 3 & J. Aichelin 3 C. M. Ko 4 & T. Song 4 1 Frankfurt Institute for Advanced

More information

CharmSpectroscopy from B factories

CharmSpectroscopy from B factories CharmSpectroscopy from B factories (SLAC) Representing the BABAR Collaboration Charm 2010 Workshop Beijing October 23, 2010 Contact: benitezj@slac.stanford.edu Production of Charm Mesons at B-factories

More information

Searches for Leptonic Decays of the B-meson at BaBar

Searches for Leptonic Decays of the B-meson at BaBar Searches for Leptonic Decays of the B-meson at BaBar Stephen Jacob Sekula (MIT) on behalf of the BaBar collaboration Presented at Frontiers in Contemporary Physics III Vanderbilt University May 22-28,

More information

Deuteron from CLAS/EG1B Data. Spin Structure Functions of the OUTLINE. Nevzat Guler (for the CLAS Collaboration) Old Dominion University

Deuteron from CLAS/EG1B Data. Spin Structure Functions of the OUTLINE. Nevzat Guler (for the CLAS Collaboration) Old Dominion University Spin Structure Functions of the Deuteron from CLAS/EGB Data Nevzat Guler (for the CLAS Collaboration) Old Dominion University OULINE Formalism Experimental setup Data analysis Results and Conclusion Motivation

More information

Photoproduction of K 0 Σ + with CLAS

Photoproduction of K 0 Σ + with CLAS Photoproduction of K 0 Σ + with CLAS Franz Klein The Catholic University of America for the CLAS Collaboration Physics Motivation Photoproduction of associated strangeness : Channels: significant data

More information

Light Baryon Spectroscopy using the CLAS Spectrometer at Jefferson Laboratory

Light Baryon Spectroscopy using the CLAS Spectrometer at Jefferson Laboratory Light Baryon Spectroscopy using the CLAS Spectrometer at Jefferson Laboratory Volker Crede on behalf of the CLAS Collaboration Department of Physics Florida State University Tallahassee, FL 3236, USA Baryons

More information

Study on the Two-Photon Transition from ψ(2s) to J/ψ at BESIII

Study on the Two-Photon Transition from ψ(2s) to J/ψ at BESIII Study on the Two-Photon Transition from ψ(2s) to J/ψ at BESIII 吕晓睿 Xiao-Rui Lu (E-mail: xiaorui@gucas.ac.cn) Graduate University of Chinese Academy of Sciences (GUCAS) List of Contents: Introduction (on

More information

arxiv: v1 [hep-ex] 31 Dec 2014

arxiv: v1 [hep-ex] 31 Dec 2014 The Journal s name will be set by the publisher DOI: will be set by the publisher c Owned by the authors, published by EDP Sciences, 5 arxiv:5.v [hep-ex] Dec 4 Highlights from Compass in hadron spectroscopy

More information

arxiv:nucl-ex/ v1 21 Dec 2004

arxiv:nucl-ex/ v1 21 Dec 2004 φ meson production in d + Au collisions at s NN = 00 GeV arxiv:nucl-ex/041048v1 1 Dec 004 1. Introduction Dipali Pal for the PHENIX collaboration Department of Physics & Astronomy, Vanderbilt University,

More information

Dalitz Decays of Pseudo-Scalar Mesons

Dalitz Decays of Pseudo-Scalar Mesons Dalitz Decays of Pseudo-calar Mesons Michael Kunkel On behalf on the CLA collaboration Outline 1 Introduction Constituent Quark Model Form Factors 2 CLA etup 3 G12 Experiment 4 Current tate of the Art

More information

Dilepton production in elementary reactions

Dilepton production in elementary reactions Dilepton production in elementary reactions Anar Rustamov a.rustamov@cern.ch University Frankfurt Outline Introduction The HADES experiment Experimental data p+p data at 3.5 GeV p+p and n+p data at 1.25

More information

Baryon Spectroscopy: Recent Results from the CBELSA/TAPS Experiment

Baryon Spectroscopy: Recent Results from the CBELSA/TAPS Experiment Baryon Spectroscopy: Recent Results from the CBELSA/TAPS Experiment For the CBELSA/TAPS Collaboration E-mail: awilson@hiskp.uni-bonn.de The study of the light quark baryon spectrum requires the measurement

More information

Selected results in hadronic final state in DIS at HERA

Selected results in hadronic final state in DIS at HERA Stathes Paganis Columbia Univ., Nevis Labs on behalf of H1 and ZEUS collaborations Recontres de Moriond - March 23 23 Outline Forward jet and π production in DIS First observation of K s K s resonances

More information

PoS(BORMIO2010)052. Measurement of the Λ(1405) in proton proton reactions with HADES

PoS(BORMIO2010)052. Measurement of the Λ(1405) in proton proton reactions with HADES Measurement of the Λ(145) in proton proton reactions with HADES HADES Collaboration Email: johannes.siebenson@ph.tum.de We present an analysis of the Λ(145) resonance in p p reactions at a kinetic beam

More information

On the measurements of neutrino energy spectra and nuclear effects in neutrino-nucleus interactions

On the measurements of neutrino energy spectra and nuclear effects in neutrino-nucleus interactions On the measurements of neutrino energy spectra and nuclear effects in neutrino-nucleus interactions Xianguo LU ( 盧 顕国 ) University of Oxford Kyoto HE Seminar 1 Outline 1. Introduction 2. Measuring nuclear

More information

!-mesons produced in, p reactions. de Physique Nucleaire et de l'instrumentation Associee. Service de Physique Nucleaire

!-mesons produced in, p reactions. de Physique Nucleaire et de l'instrumentation Associee. Service de Physique Nucleaire Quantum interference in the e + e, decays of - and!-mesons produced in, p reactions Madeleine Soyeur 1, Matthias Lutz 2 and Bengt Friman 2;3 1. Departement d'astrophysique, de Physique des Particules,

More information

MENU Properties of the Λ(1405) Measured at CLAS. Kei Moriya Reinhard Schumacher

MENU Properties of the Λ(1405) Measured at CLAS. Kei Moriya Reinhard Schumacher MENU 21 Properties of the Λ(145) Measured at CLAS Kei Moriya Reinhard Schumacher Outline 1 Introduction What is the Λ(145)? Theory of the Λ(145) 2 CLAS Analysis Selecting Decay Channels of Interest Removing

More information

Threshold Photo-production of J/5 Mesons J. Dunne Jefferson Lab

Threshold Photo-production of J/5 Mesons J. Dunne Jefferson Lab hreshold Photo-production of J/5 Mesons J. Dunne Jefferson Lab Introduction With the advent of higher energies at Jefferson Lab, the study of charmonium becomes possible. he threshold production of J/5

More information

PrimEx Experiments and the Prospects of Rare η Decays at GlueX

PrimEx Experiments and the Prospects of Rare η Decays at GlueX PrimEx Experiments and the Prospects of Rare η Decays at GlueX Outline Liping Gan University of North Carolina Wilmington Challenges in Physics Precision tests of continuous symmetries of confinement QCD

More information

Modifications of the D33(1700) resonance in the nuclear medium

Modifications of the D33(1700) resonance in the nuclear medium Modifications of the D33(1700) resonance in the nuclear medium Vahe Sokhoyan Nuclear Photoproduction with GlueX Topical Workshop, April 28-29, 2016 Supported by the Carl-Zeiss-Stiftung Motivation Goal:

More information

TETRAQUARKS AND PENTAQUARK(S)

TETRAQUARKS AND PENTAQUARK(S) TETRAQUARKS AND PENTAQUARK(S) J. Rosner - University of Chicago November 16, 2015 Work with Marek Karliner, Tel Aviv University LHCb: arxiv:1507.03414, PRL 115, 072001 (2015): Discovery of two new states

More information