Top-tagging at high jet multiplicity
|
|
- Walter Carpenter
- 5 years ago
- Views:
Transcription
1 Top-tagging at high jet multiplicity Sebastian Schätzel Universität Heidelberg, Germany Using Jet Substructure Workshop University of Oregon, Eugene, USA April 2013 HEPTopTagger fat jet quantities mass p T multiplicity of substructure objects Thanks to Tilman Plehn and Michael Spannowsky for suggestions
2 The past clean back-to-back ttbar events 2
3 High jet multiplicity 4 tops from gluino pairs benchmark model: <pt distributions of tops> mass (GeV) g t LSP 100 3
4 Top Taggers prong-based 3 subjets in fat jet substructure kinematics compatible with t bw bqq fat jet shapes mass and pt of fat jet N-subjettiness... example: HEPTopTagger (mass windows) performance at high jet multiplicity? 4
5 The setup signal: Herwig background: QCD dijets, PYTHIA Delphes (0.1x0.1 cells) ECM = 14 TeV distributions scaled to 10 fb-1 not ATLAS simulation no pile-up 5
6 The jet environment SUSY 6
7 The jet environment QCD 7
8 Interlude: Pythia practical reason for using it: 8M events at hand for multi-jets better use multi-leg generator take efficiencies in present study with grain of salt final numbers from data 8
9 ±10% if no pile-up S.S., BOOST2012 9
10 with PU: up to 40% off, more in tails this is at low multiplicity! POWHEG slightly better 10
11 Master distributions SUSY QCD experimentally: ATLAS standard jets: anti-k T R=0.4 ntag n njet m integrated distributions 11
12 HEPTopTagger (HTT) fat jet (C/A R=1.5) Plehn et al., arxiv: HTT top candidate 4-momentum pt underlying event, pile-up I. identify hard subjets undo C/A clustering until all subjets after filtering II. 3 subjets compatible with top decay? a) Filtering: remove UE and PU min have m<50 GeV drop subjets that contribute less Δ R ij recluster with small R=min (0.3, ) 2 keep 5 hardest subjets than 20% to parent mass exclusively recluster constituents to 3 subjets b) call these subjets substructure objects p t = p apply kinematic cuts [ m ij m m 0.85 W,1.15 W m123 mt mt additional cuts (backup) any mij mw: pt,t > 200 GeV, 140 < mt < 200 GeV ] 12
13 HEPTopTagger efficiency significance improvement w.r.t. SUSY analysis without top quark identification more fake tops at high multiplicity (accidental mass window hits) akt04 jets w/pt>50 GeV 13
14 normal tight loose N filt jet mw window ±15% ±10% ±20% mcut (GeV) HEPTopTagger filtering max R filt jet 14
15 normal tight loose N filt jet mw window ±15% ±10% ±20% mcut (GeV) HEPTopTagger filtering max R filt jet tight > normal > loose 2 tags > 1 tag 15
16 Unintegrated efficiencies SUSY QCD x3 x3 x1.5 x3 16
17 Conclusions HEPTopTagger high multiplicity: larger chance to hit mass windows accidentally 2nd tag: need 3 more jets tight filtering reduces fake rate improves S/B 17
18 Fat jet pt and top pt keep keep QCD configurations passing HTT are more signal-like 18
19 Leading fat jet mass keep 19
20 Sum of fat jet masses keep 20
21 Number of fat jets QCD SUSY 21
22 Improvement in significance w.r.t. SUSY analysis without top quark identification pt > m several fat jets > 1 fat jet 22
23 Hard substructure in fat jet HTT breakdown of fat jet into substructure objects (80% mass-drop, mcut = 50 GeV) keep 23
24 Improvement in significance counting does not help 24
25 Improvement in significance for njet 7: comparable performance S / B improvement: factor 2 25
26 Uncertainties relative uncertainty on efficiency (njet 7) HEPTopTagger subjet calibration 4% fat jet mass >350 GeV 5% fat jet pt >500 GeV 3% sum fat jet mass > 800 GeV? 26
27 Summary Delphes study of high jet multiplicity events one SUSY model vs. QCD (PYTHIA) HEPTopTagger (prong-based): jet combinatorics increase fake rate (accidental hits of mass windows) tight filtering helps similar performance from cuts on m(fat jet), pt(fat jet 1) substructure counting and cut on m(fat jet 1) perform worse ATLAS study underway (Maddalena Giulini) 27
28 Backup 28
29 Additional HEPTopTagger cuts 2 i for m 0 : m123 m 12 +m 13 +m 23 kinematics described by 2 angles: cos θ = m23/m123 sphere with radius m123 mt Φ = atan m13/m12 cut away background tt QCD cos θ = W+jets Φ= 29 Plehn et al., arxiv:
Jet substructure, top tagging & b-tagging at high pt Pierre-Antoine Delsart and Jeremy Andrea
Jet substructure, top tagging & b-tagging at high pt Pierre-Antoine Delsart and Jeremy Andrea Laboratoire de Physique Subatomique et Corpusculaire CNRS/IN2P3 1 Motivations Now exploring very high pt regions
More informationLarge R jets and boosted. object tagging in ATLAS. Freiburg, 15/06/2016. #BoostAndNeverLookBack. Physikalisches Institut Universität Heidelberg
Large R jets and boosted object tagging in ATLAS Christoph Anders Physikalisches Institut Universität Heidelberg #BoostAndNeverLookBack Freiburg, 15/06/2016 ??? Cambridge-Aachen 2 arxiv:1506.00962 Higgs
More informationBoosted Top Tagging with Neural Networks
Boosted Top Tagging with Neural Networks Maxim Perelstein Cornell CMS Group Physics Retreat, March 5 2015 Based on work with Leo Almeida, Mihailo Backovic, Mathieu Cliche, Seung Lee [arxiv:1501.05968 +
More informationTagging Boosted Top Quarks and Higgs Bosons in ATLAS
agging Boosted op Quarks and Higgs Bosons in ALAS BOOS 05, University of Chicago Matt LeBlanc, on behalf of the ALAS Collaboration 0 th -4 th August 05 Overview Run-I op agging: ALAS-CONF-05-36 agging
More informationbb and TopTagging in ATLAS
X bb and TopTagging in ATLAS Mike Nelson, University of Oxford michael.nelson@physics.ox.ac.uk Focus of the discussion I want to try and achieve two things: Introduce the basic tools employed in ATLAS
More informationEffects of Jet Substructure Selection in
Effects of Jet Substructure Selection in tt WbWb µνbqqb Ziggy Zacks Wesleyan University July 31, 2012 1 / 29 Optimization Optimize data selection from the semi-leptonic boosted tops analysis. Specifically
More informationBoosted hadronic object identification using jet substructure in ATLAS Run-2
Boosted hadronic object identification using jet substructure in ATLAS Run-2 Emma Winkels on behalf of the ATLAS collaboration HEPMAD18 Outline Jets and jet substructure Top and W tagging H bb tagging
More informationTop tagging at CMS. Torben Dreyer on behalf of the CMS Collaboration. BOOST 2017, Buffalo
Torben Dreyer on behalf of the CMS Collaboration BOOST 2017, Buffalo Motivation LHC at s = 13 TeV More top quarks with high momentum (Standard Model and new physics) Top tagging more important than ever
More informationBoosted Top Resonance Searches at CMS
Boosted Top Resonance Searches at CMS Justin Pilot, UC Davis on behalf of the CMS Collaboration Northwest Terascale Workshop, Using Jet Substructure University of Oregon 5 April 013 Introduction Many new
More informationPreparations for SUSY searches at the LHC
Preparations for SUSY searches at the LHC Alex Tapper UK HEP Forum: LHC First Results and Outlook, September 20-21 20. Outline Search strategy Examples with 70 nb -1 Hadronic searches Leptonic searches
More informationSubstructure at CMS:
Substructure at CMS: Experimental Perspective (SUNY Buffalo) Terajets 2013: Using Jet Substructure 1 Introduction Use one example analysis (Z tt all hadronic) to bring up some experimental discussion topics
More informationReconstructing low mass boosted A bb at LHCb
Summer student report - CERN 2014 Summer student: Petar Bokan Supervisor: Victor Coco Reconstructing low mass boosted A bb at LHCb ABSTRACT: LHCb has the ability to trigger low mass objects with high efficiency.
More informationPreparations for SUSY searches at the LHC
Preparations for SUSY searches at the LHC Alex Tapper UK HEP Forum: LHC First Results and Outlook, September 20-21 20. Outline Search strategy Examples with 70 nb Hadronic searches Leptonic searches (single
More informationOverall CMS SUSY search strategy
GGI workshop Overall CMS SUSY search strategy Filip Moortgat (ETH Zurich) Florence, October 22, 2012 GGI workshop 2012 Filip Moortgat (ETH Zurich) 1 Outline Strategy for the first data Assume pair production
More informationQCD Multijet Background and Systematic Uncertainties in Top Physics
QCD Multijet Background and Systematic Uncertainties in Top Physics Jin Wang On behalf of ATLAS, CMS, CDF and D0 Collaborations IHEP, China 2013-09-15, Top2013 1 Outline Introduction of QCD Multijet Background
More informationSearch for Heavy Resonances X WV lνqq. Zijun Xu Peking University 2016 Dec
Search for Heavy Resonances X WV lνqq Zijun Xu Peking University 2016 Dec Diboson Resonance searches Spin-0, Heavy Higgs, Radion Spin-1, Heavy Vector Triplet W, Z Spin-2, RS/Bulk Graviton 2 Diboson Resonance
More informationSearch for a SM-like Higgs boson. Zijun Xu Peking University ISHP, Beijing Aug 15, 2013
l n W H W Search for a SM-like Higgs boson decaying into WW lνq q in CMS Zijun Xu Peking University ISHP, Beijing Aug 15, 2013 Outline Introduction H WW Lep + MET + 2 jets [1] : 160-600 GeV H WW Lep +
More informationTop and Higgs Tagging and Where it Helps
Top and Higgs Tagging and Where it Helps Universität Heidelberg Mainz 2/2 Boosted particles at the LHC 994 boosted W 2 jets from heavy Higgs [Seymour] 994 boosted t 3 jets [Seymour] 22 boosted W 2 jets
More informationProspects for. Teruki Kamon
Prospects for SUSY Light of 2012 in Light Stop Teruki Kamon Mitchell Institute for Fundamental Physics and Astronomy Texas A&M University & Department of Physics Kyungpook National University LHC Workshop
More informationHard And Soft QCD Physics In ATLAS
Hard And Soft QCD Physics In ALAS Stefanie Adomeit on behalf of the ALAS collaboration International Conference on New Frontiers in Physics - Crete, June -6, QCD Measurements in ALAS at LHC every kind
More informationLatest results on the SM Higgs boson in the WW decay channel using the ATLAS detector
Latest results on the SM iggs boson in the decay channel using the detector arxiv:188.954, accepted by PRB Claudia Bertella, on behalf of Collaboration The 4th China LC Physics Workshop (CLCP 218) 21-December-218
More informationSearches for BSM Physics in Events with Top Quarks (CMS)
Searches for BSM Physics in Events with Top Quarks (CMS) On behalf of the CMS collaboration SUSY 2014 Manchester, July 22nd 2014 The Top Quark Top quark special due to its high mass main responsible for
More informationCarlos Sandoval Universidad Antonio Nariño On behalf of the ATLAS collaboration DIS Kobe, Japan
Carlos Sandoval Universidad Antonio Nariño On behalf of the ATLAS collaboration DIS 2018 - Kobe, Japan 1 Search for long-lived massive particles (LLP) in events with displaced vertices (DV): arxiv:1710.04901v1
More informationSearch For W tb All-Hadronic. Kevin Nash
Search For W tb All-Hadronic Kevin Nash 1 Introduction Searching for BSM physics Top quarks play an important role New massive gauge bosons (W, Z ) Heavy quark partners (t,b ) Kaluza-Klein excitations
More informationJets and jet substructure 4: substructure
Jets and jet substructure 4: substructure Gavin Salam (CERN) with extensive use of material by Matteo Cacciari and Gregory Soyez TASI June 213 1 Two things that make jets@lhc special The large hierarchy
More informationTeruki Kamon Collaboration with Bhaskar Dutta, Nikolay Kolev, Kuver Sinha, and Kechen Wang
Stopping at with the LHC M3 Teruki Kamon Collaboration with Bhaskar Dutta, Nikolay Kolev, Kuver Sinha, and Kechen Wang Mitchell Institute for Fundamental Physics and Astronomy Texas A&M University & Department
More informationResolved Top Tagger in CMS
Resolved Top Tagger in CMS An MVA-based tool used for tagging low to moderately boosted hadronic tops Stanislava Sevova, Northwestern University on behalf of CMS Collaboration 1 Overview Motivation Resolved
More informationSearches for Natural SUSY with RPV. Andrey Katz. C. Brust, AK, R. Sundrum, Z. Han, AK, M. Son, B. Tweedie, 1210.XXXX. Harvard University
Searches for C. Brust, AK, R. Sundrum, 126.2353 Z. Han, AK, M. Son, B. Tweedie, 121.XXXX Harvard University Frontiers Beyond the Standard Model III, Minneapolis, October 13, 212 (Harvard) October, 13 1
More informationJet Substructure. Adam Davison. University College London
Jet Substructure Adam Davison University College London 1 Outline Jets at the LHC Machine and ATLAS detector What is a jet? Jet substructure What is it? What can it do for us? Some ATLAS/Higgs bias here
More informationA search for t t resonances using 3.2 fb 1 of proton-proton collisions at 13 TeV: Boosted analysis
A search for t t resonances using 3.2 fb 1 of proton-proton collisions at 13 TeV: Boosted analysis Silvestre Marino Romano on behalf of ATLAS team LPC Clermont-Ferrand May 19, 2016 S. M. Romano ( LPC Clermont-Ferrand
More informationSearches at the LHC: Results from first data
Searches at the LHC: Results from first data 23 March, 2011 Satyaki Bhattacharya SINP, Kolkata Plan of talk CMS Higgs, SUSY, Exotica results from Moriond Higgs SUSY Exotica main emphasis In exotica part
More informationSearch for W' tb in the hadronic final state at ATLAS
Search for W' tb in the hadronic final state at ATLAS Ho Ling Li The University of Chicago January 5, 2015 1 Introduction What is W'? A charged, heavy, Standard-Model-like W gauge boson Analysis channels
More informationSearch for BSM Decaying to Top Quarks
1, Johns Hopkins Why 2? In many BSM models, third generation is special (esp. top) Easiest to study the spectrum of invariant masses, 1) Narrow resonance (
More informationSearch for the Higgs Boson In HWW and HZZ final states with CMS detector. Dmytro Kovalskyi (UCSB)
Search for the Higgs Boson In HWW and HZZ final states with CMS detector Dmytro Kovalskyi (UCSB) Introduction WW and ZZ finals states dominate Higgs searches at Higgs Mass WW 2L2ν has best sensitivity
More informationSearch for SUSY at CMS in lepton or photon final states. PANIC 2011 K. Theofilatos (on behalf of CMS)
Search for SUSY at CMS in lepton or photon final states CMS in one slide Optimal design for reconstructing leptons & photons Compact & precisely aligned detector with B=3.8 T Calorimeters operating inside
More informationTop Quark Studies with CMS
Top Quark Studies with CMS Frank-Peter Schilling (KIT) on behalf of the CMS collaboration The TOP Top Physics at the LHC Precise SM measurements o Heaviest known elementary particle (large Yukawa coupling)
More informationEvidence for tth production at ATLAS
Evidence for tth production at ATLAS Rohin T Narayan on behalf of the ATLAS collaboration Nov-6-2017, Higgs couplings Heidelberg Motivation Fermion masses are generated through Yukawa interaction Heaviest
More informationDark Matter in ATLAS
Dark Matter in ATLAS Silvia Resconi INFN Milano (on behalf of the ATLAS Collaboration) Ordinary Matter Dark Matter Dark Energy Rencontre de Moriond: QCD and High Energy Interactions 21st March 2016 Outline
More informationBackground photo: CMS detector in access (i.e., broken-symmetry) mode. David Stuart, UCSB 1
Recent CMS SUSY Searches David Stuart, UC Santa Barbara Background photo: CMS detector in access (i.e., broken-symmetry) mode David Stuart, UCSB Why supersymmetry? Dark matter and hierarchy problem. Δm
More informationNew physics searches with top quarks at ATLAS
New physics searches with top quarks at ATLAS Marcel Vos (IFIC, CSIC/UV, Valencia, Spain) New phenomena discussion session IMFP2012, Benasque, Spain Top as a signature for new physics? Wishful thinking?:
More informationSearch for Higgs to tt at CMS
Search for Higgs to tt at CMS Arun Nayak IRFU/SPP, CEA, Saclay 11/10/2013 Aperos du SPP 1 Why Higgs to tt? Introduction Most sensitive channel to probe lepton couplings o Important to establish SM predictions
More informationHighlights of top quark measurements in hadronic final states at ATLAS
Highlights of top quark measurements in hadronic final states at ATLAS Serena Palazzo 1,2,, on behalf of the ATLAS Collaboration 1 Università della Calabria 2 INFN Cosenza Abstract. Measurements of inclusive
More informationMeasurements of the tt Cross Section and Top Mass at CDF
Measurements of the tt Cross Section and Top Mass at University of Chicago / LBNL For the Collaboration HCP 2004, 06/15/04, p. 1 Studying the tt Cross Section Main question: is top quark adequately described
More informationQCD Jets: Rise of the Machines
QCD Jets: Rise of the Machines Universität Heidelberg Budapest 7/217 Fat jets Boosted particles at the LHC 1994 boosted W 2 jets from heavy Higgs [Seymour] 1994 boosted t 3 jets [Seymour] 26 boosted t
More informationInclusive SUSY Particle Searches
Inclusive SUSY Particle Searches with Jets and MET (CMS) On behalf of the CMS collaboration Kristin Goebel University of Hamburg SUSY 2014 Manchester, England Production of SUSY Particles at the LHC At
More informationDark matter searches and prospects at the ATLAS experiment
Dark matter searches and prospects at the ATLAS experiment Wendy Taylor (York University) for the ATLAS Collaboration TeVPA 2017 Columbus, Ohio, USA August 7-11, 2017 Dark Matter at ATLAS Use 13 TeV proton-proton
More informationTeruki Kamon. Mitchell Institute for Fundamental Physics and Astronomy Texas A&M University & Department of Physics Kyungpook National University
Stopping at the LHC Using M3 Teruki Kamon Mitchell Institute for Fundamental Physics and Astronomy Texas A&M University & Department of Physics Kyungpook National University 20th International Conference
More informationDifferential Top Cross-section Measurements
Differential op Cross-section Measurements ALPS207 Obergurgl Michael Fenton on behalf of the ALAS Collaboration University of Glasgow m.fenton.@research.gla.ac.uk April 8, 207 Michael Fenton Differential
More informationSearch for the Standard Model Higgs Boson in H WW lν lν with the ATLAS experiment
Search for the Standard Model Higgs Boson in H WW lν lν with the ATLAS experiment MCTP Symposium 2012, University of Michigan, Ann Arbor, US Outline SM Higgs Boson production and decay Analysis based on
More informationBoosted Top Tagging with Deep Neural Networks
Boosted Top Tagging with Deep Neural Networks Jannicke Pearkes University of British Columbia, Engineering Physics Wojtek Fedorko, Alison Lister, Colin Gay Inter-Experimental Machine Learning Workshop
More informationttbar Background Estimation in the Search for b-associated MSSM Higgs Bosons Decaying to Tau-Pairs with ATLAS DPG Bonn, T 45. Higgs
ttbar Background Estimation in the Search for b-associated MSSM Higgs Bosons Decaying to Tau-Pairs with ATLAS DPG Bonn, T 45. Higgs 17.03.2010 Jana Schaarschmidt Supervised by Michael Kobel, Wolfgang Mader
More informationMeasurement of the Z ττ cross-section in the semileptonic channel in pp collisions at s = 7 TeV with the ATLAS detector
Measurement of the Z ττ cross-section in the semileptonic channel in pp collisions at s = 7 TeV with the ATLAS detector Sofia Consonni Università di Milano & INFN XCVII Congresso Nazionale della Società
More informationEvent shapes in hadronic collisions
Event shapes in hadronic collisions Andrea Banfi ETH Zürich SM@LHC - Durham - April Event shapes at hadron colliders Event shapes are combinations of hadron momenta in a number related to the geometry
More informationPhysics with Tau Lepton Final States in ATLAS. Felix Friedrich on behalf of the ATLAS Collaboration
Physics with Tau Lepton Final States in ATLAS on behalf of the ATLAS Collaboration HEP 2012, Valparaiso (Chile), 06.01.2012 The Tau Lepton m τ = 1.8 GeV, heaviest lepton cτ = 87 μm, short lifetime hadronic
More informationSearches for new physics in the Top Sector at the LHC. Davide Gerbaudo On behalf of the CMS and ATLAS collaborations
Searches for new physics in the Top Sector at the LHC Davide Gerbaudo On behalf of the CMS and ATLAS collaborations Fermilab, April 2015 LHC: not only more tops... 2015 1995 2 but also boosted tops LHC
More informationResults on QCD jet production at the LHC (incl. Heavy flavours)
Results on QCD jet production at the LHC (incl. Heavy flavours) R. Seuster (TRIUMF) On behalf of the ATLAS and CMS collaborations Recontres du Vietnam August 11th 17th, 2013 Windows on the Universe Outline
More information14th Lomonosov Conference on Elementary Particle Physics Moscow, 24 August 2009
M. Biglietti University of Rome Sapienza & INFN On behalf of the ATLAS Collaboration 1 14th Lomonosov Conference on Elementary Particle Physics Moscow, 24 August 2009 Theoretically favored candidates for
More informationVivian s Meeting April 17 th Jet Algorithms. Philipp Schieferdecker (KIT)
th 2009 Jet Algorithms What are Jets? Collimated bunches of stable hadrons, originating from partons (quarks & gluons) after fragmentation and hadronization Jet Finding is the approximate attempt to reverse-engineer
More informationMachine Learning just because it is Great Fun
Machine Learning just because it is Great Fun Universität Heidelberg Hamburg 2/209 Change of title Why LHC, why jets Big jet data by ATLAS & CMS colliding protons on protons at E 3000 m p most interactions
More informationBill Murray Warwick University / RAL, STFC On behalf of the ATLAS and CMS collaborations 26th March 2017
s w g i t g h i H W. Murray 1 S i g c n i a n t o u r r d es a H Bill Murray Warwick University / RAL, STFC On behalf of the ATLAS and CMS collaborations 26th March 2017 H bb in th,vbf, VH and tth W. Murray
More informationMeasurement of W-boson Mass in ATLAS
Measurement of W-boson Mass in ATLAS Tai-Hua Lin on behalf of the ATLAS collaboration Blois 2017, France Outline Motivation for W mass measurement Measurement Strategy Method: Monte Carlo Templates Fits
More informationarxiv: v1 [hep-ph] 27 Dec 2018
Study of t th production with H b b at the HLLHC arxiv:1812.17v1 [hepph] 27 Dec 218 A. J. Costa, 1 A. L. Carvalho, 2 R. Gonçalo, 2, 3 P. Muiño, 2, 4 and A. Onofre 5 1 School of Physics and Astronomy, University
More informationBoosted top quarks & jet substructure
Boosted top quarks & jet substructure Marcel Vos (IFIC, CSIC/UV, Valencia, Spain) MIAPP top physics day Garching, 11 August 2014 The boosted production threshold LHC: s >> EEW Even the heaviest SM particles
More informationarxiv: v1 [hep-ex] 18 Jul 2016
Top quark mass measurements with the experiment at the LHC arxiv:67.4972v [hep-ex] 8 Jul 26 Deutsches Elektronen-Synchrotron DESY E-mail: simon.spannagel@desy.de Measurements of the top quark mass are
More informationPerformance of muon and tau identification at ATLAS
ATL-PHYS-PROC-22-3 22/2/22 Performance of muon and tau identification at ATLAS On behalf of the ATLAS Collaboration University of Oregon E-mail: mansoora.shamim@cern.ch Charged leptons play an important
More informationSearch for Supersymmetry at CMS in all-hadronic final states
Search for Supersymmetry at CMS in all-hadronic final states The 9th Particles and Nuclei International Conference, MIT Matthias Schröder (Universität Hamburg) on behalf of the CMS Collaboration 5 July
More informationSingle top: prospects at LHC
Single top: prospects at LHC Markus Cristinziani (Uni Bonn) for ATLAS, Giovanni Petrucciani (SNS & INFN Pisa) for CMS Top2008 M. Cristinziani (Bonn), G. Petrucciani (Pisa) 1 Outline What changes between
More informationTaller de Altas Energías Michael Holzbock September 7, LMU Munich
Search for top squark pair production in final states with two τ leptons, jets, and missing transverse momentum in s = TeV pp-collisions with the ATLAS detector Taller de Altas Energías 6 Michael Holzbock
More informationEarly physics with Atlas at LHC
Early physics with Atlas at LHC Bellisario Esposito (INFN-Frascati) On behalf of the Atlas Collaboration Outline Atlas Experiment Physics goals Next LHC run conditions Physics processes observable with
More informationFinal states with third generation quarks at 13 TeV. Pieter Everaerts. On Behalf of the ATLAS and CMS collaborations.
Final states with third generation quarks at 13 TeV Pieter Everaerts University of California, Los Angeles On Behalf of the ATLAS and CMS collaborations March 17, 2013 Pieter Everaerts Searches with 3rd
More informationStandard Model physics with taus in ATLAS
Standard Model physics with taus in ATLAS IFJ PAN, Cracow, Poland Why we are interested in taus? Tau leptons play an important role in the physics program of the ATLAS experiment as they are tools in many
More informationSearch for squarks and gluinos with the ATLAS detector. Jeanette Lorenz (LMU München)
Search for squarks and gluinos with the ATLAS detector Jeanette Lorenz (LMU München) Research Area B Science Day, Supersymmetry Symmetry between fermions and bosons Only possible extension of Poincare
More informationInclusive searches in ATLAS: How can we discover SUSY in 2009
Inclusive searches in ATLAS: How can we discover SUSY in 2009 George Redlinger Brookhaven National Laboratory (for the ATLAS Collaboration) University of Michigan LHC Dark Matter Workshop 6-10 Jan 2009
More informationATLAS Searches for Higgs Bosons Beyond the Standard Model
ATLAS Searches for Higgs Bosons Beyond the Standard Model Trevor Vickey University of the Witwatersrand, South Africa University of Oxford, United Kingdom on behalf of the ATLAS Collaboration July 28,
More informationSystematics in charged Higgs searches in ATLAS
Systematics in charged Higgs searches in ATLAS Simonetta Gentile Università di Roma, La Sapienza, INFN on behalf of ATLAS Collaboration 1 Outline Light H + search & expected upper limits for Br(t H + b
More informationDouble Parton Scattering in CMS. Deniz SUNAR CERCI Adiyaman University On behalf of the CMS Collaboration Low-x th June 2017 Bari, Italy
Double Parton Scattering in CMS Deniz SUNAR CERCI Adiyaman University On behalf of the CMS Collaboration Low-x 2017 17th June 2017 Bari, Italy Outline Introduction to DPS DPS measurements with CMS 2b +
More informationFinding heavy particles in single jets
Finding heavy particles in single jets Christopher Vermilion with teve Ellis and Jon Walsh University of Washington eptember 16, 009 arxiv: 0903.5081, 0909.OON tinyurl.com/jetpruning 1 / 37 Why jet substructure?
More informationStudy of supersymmetric tau final states with Atlas at LHC: discovery prospects and endpoint determination
Study of supersymmetric tau final states with Atlas at LHC: discovery prospects and endpoint determination University of Bonn Outlook: supersymmetry: overview and signal LHC and ATLAS invariant mass distribution
More informationMeasurements of Fermionic Couplings of the Standard Model Higgs Boson using the bb, ττ and µµ Decay Channels with the ATLAS Detector
Measurements of Fermionic Couplings of the Standard Model Higgs Boson using the bb, ττ and µµ Decay Channels with the ATLAS Detector International Europhysics Conference on High Energy Physics Venice,
More informationGeorge Bakas For the NTUA CMS Group
George Bakas For the NTUA CMS Group Top quark CMS Experiment Boosted Jets Analysis Overview 2 Mass : 172.44 ± 0.13 GeV c 2 Top Quark decay W + + b ( ҧ t W - + തb) Top pair production q + തq t + tҧ g +
More informationJet Substructure in the Pre-ILC Era. Brock Tweedie Boston University 18 March 2011
Jet Substructure in the Pre-ILC Era Brock Tweedie Boston University 18 March 2011 We re Making Progress Everything heavy becomes light eventually 1970 s: Taus, c-quarks, and b-quarks freshly discovered,
More informationJet physics in ATLAS. Paolo Francavilla. IFAE-Barcelona. Summer Institute LNF , QCD, Heavy Flavours and Higgs physics
Jet physics in ATLAS IFAE-Barcelona Summer Institute LNF-2012-2, QCD, Heavy Flavours and Higgs physics Frascati National Laboratories 27 June 2012 Jets in the LHC era At the Large Hadron Collider (LHC),
More informationHeavy T' LHC José David Ruiz-Alvarez On behalf of the ATLAS and CMS collaborations
Heavy T' searches @ LHC José David Ruiz-Alvarez On behalf of the ATLAS and CMS collaborations 1 Outline General overview Pair production searches Single production searches Conclusion 2 Heavy Quarks Fourth
More informationThe Top Quark Mass in the Muon+Jets Final State at s = 13 TeV in 2015 Data
The Top Quark Mass in the Muon+Jets Final State at s = 13 TeV in 2015 Data CMS PAS TOP6-022 55th Course of the ISSP, Erice Christoph Garbers, Nataliia Kovalchuk,Johannes Lange, Peter Schleper, Markus Seidel,
More informationStatus of ATLAS and CMS
Status of ATLAS and CMS A. Di Simone Università & INFN Roma Tor Vergata On behalf of the ATLAS and CMS collaborations High precision for Hard Processes at the LHC GGI, Arcetri, 14-17/09/2010 Outline Introduction
More informationHadronic Exotica Searches at CMS
Hadronic Exotica Searches at CMS Dinko Ferenček Rutgers, The State University of New Jersey On behalf of the CMS Collaboration SEARCH2012 Workshop March 19, 2012 College Park, Maryland Introduction and
More informationRecent QCD results from ATLAS
Recent QCD results from ATLAS PASCOS 2013 Vojtech Pleskot Charles University in Prague 21.11.2013 Introduction / Outline Soft QCD: Underlying event in jet events @7TeV (2010 data) Hard double parton interactions
More informationThe Compact Muon Solenoid Experiment. Conference Report. Mailing address: CMS CERN, CH-1211 GENEVA 23, Switzerland. Top physics at HL-LHC
Available on CMS information server CMS CR -2017/029 The Compact Muon Solenoid Experiment Conference Report Mailing address: CMS CERN, CH-1211 GENEVA 23, Switzerland February 2017 (v3, 14 February 2017)
More informationTop quark mass at ATLAS and CMS
Top quark mass at ATLAS and CMS (Introduction) Direct measurements Template/Ideogram based Indirect measurements Unfolded shapes/cross sections Conclusions & Outlook Andreas Jung for the ATLAS & CMS collaboration
More informationATLAS Jet Reconstruction, Calibration, and Tagging
ALAS Jet Reconstruction, Calibration, and agging Steven Schramm On behalf of the ALAS Collaboration ICNFP 7 Crete, Greece August, 7 Steven Schramm (Université de Genève) Jet reconstruction, calibration,
More informationStudy of Higgs boson leptonic decay modes
Study of Higgs boson leptonic decay modes Windows on the Universe ICSE, Vietnam 11-17.08.2013 Pawel Brückman de Renstrom on behalf of the ATLAS, CMS, CDF, D0 Collaborations ( Institute of Nuclear Physics
More informationSUSY in Hadronic Final States at CMS. Joshua Thompson, Cornell University 26 Aug 2013 SUSY2013 Conference Trieste, Italy
SUSY in Hadronic Final States at CMS Joshua Thompson, Cornell University SUSY2013 Conference Trieste, Italy SUSY production at the LHC Gluino and squark production processes have the highest cross-sections
More informationAN ANALYTIC UNDERSTANDING OF JET SUBSTRUCTURE
AN ANALYTIC UNDERSTANDING OF JET SUBSTRUCTURE Simone Marzani Institute for Particle Physics Phenomenology Durham University NIKHEF Amsterdam, 7 th November 213 Dasgupta, Fregoso, SM, Powling EPJ C Dasgupta,
More informationSearch for heavy BSM particles coupling to third generation quarks at CMS
Search for heavy BSM particles coupling to third generation quarks at on behalf of the Collaboration University of Hamburg E-mail: mareike.meyer@desy.de Many models of physics beyond the Standard Model
More informationarxiv: v1 [hep-ex] 15 Jan 2019
CMS-CR-8/37 January 7, 9 Top Quark Modelling and Tuning at CMS arxiv:9.559v [hep-ex] 5 Jan 9 Emyr Clement on behalf of the CMS Collaboration University of Bristol Recent measurements dedicated to improving
More informationarxiv: v3 [hep-ph] 25 Jan 2011
Preprint typeset in JHEP style - HYPER VERSION MIT-CTP 4191 arxiv:111.2268v3 [hep-ph] 25 Jan 211 Identifying Boosted Objects with N-subjettiness Jesse Thaler and Ken Van Tilburg Center for Theoretical
More informationSearch for di-higgs to 4b with the ATLAS detector. Tony(Baojia)Tong, Harvard University CLHCP, PKU, Dec. 18, 2016
Search for di-higgs to 4b with the ATLAS detector Tony(Baojia)Tong, Harvard University CLHCP, PKU, Dec. 8, 6 Motivation Di-Higgs production Cross section small in SM: 8 TeV ~ fb (NNLO) 3 TeV ~ 38 fb (NNLO
More informationJets and Heavy Flavour Physics in the vacuum and in the medium
LHCP Shanghai, May 2017 Jets and Heavy Flavour Physics in the vacuum and in the medium Matteo Cacciari LPTHE Paris Université Paris Diderot Jets Jets can be a golden observable to study the properties
More informationSearch for gluino-mediated stop and sbottom pair production in events with b-jets and large missing transverse momentum
Search for gluino-mediated stop and sbottom pair production in events with b-jets and large missing transverse momentum Chiara Rizzi On behalf of the ATLAS Collaboration ALPS 2017 Obergurgl Introduction
More informationICHEP 2008 Philadelphia
ICHEP 2008 Philadelphia LHC CERN Geneva 2008 Sascha Caron Standard SUSY at LHC 2 Almost all LHC sectors are cooled down (2 sectors at this moment at 20-30K) Start at s = 10 TeV in 2008 2008 Luminosity
More information