QCD Factorization Approach to Cold Nuclear Matter Effect
|
|
- Samuel Johns
- 6 years ago
- Views:
Transcription
1 Physics Division Seminar April 25, 2016 Mini-symposium on Cold Nuclear Matter from Fixed-Target Energies to the LHC SCGP: Small Auditorium Rm 102, October 9-10, 2016 QCD Factorization Approach to Cold Nuclear Matter Effect Jianwei Qiu Theory Center, Jefferson Lab Based on work done in collaboration with E.L. Berger, K.J. Eskola, X. Guo, Z.-B. Kang, M. Luo, A.H. Mueller, G. Sterman, I. Vitev, X.-N. Wang, H. Xing, X. Zhang,
2 A long history, Cronin effect Process: h + A E d ha d 3 p particle(p)+x E d hn d 3 p A (p) Cronin et al., Phys. Rev. D11, 3105
3 A long history, Cronin effect Nuclear Shadowing Process: h + A E d ha d 3 p particle(p)+x E d hn d 3 p A (p) Cronin et al., Phys. Rev. D11, 3105 Process: (q)+a X Goodman et al., Phys. Rev. D47, 293
4 Cronin effect A long history, Nuclear Shadowing EMC Effect 1983 Process: h + A E d ha d 3 p particle(p)+x E d hn d 3 p A (p) Cronin et al., Phys. Rev. D11, 3105 Process: (q)+a X Goodman et al., Phys. Rev. D47, 293 Process: (l)+a(p A ) (l )+X Aubert et al., Phys. Lett. B123, 275
5 A long history, PT Broadening, Process: Johnson et al, PRC 2007
6 A long history, PT Broadening, Energy loss, Process: Johnson et al, PRC 2007 Process: ` + A! `0 + h + X R h A h A/(A h N ) z = p h / W. Brooks, EICAC,
7 PT Broadening, A long history, Energy loss, J/ψ suppression, X 2 scaling? Process: Johnson et al, PRC 2007 Process: ` + A! `0 + h + X R h A h A/(A h N ) z = p h / W. Brooks, EICAC, Process: p + A! J/ + X J/ pa J/ pn A + LHC data, R. Vogt, QWG2016,
8 The rest of my talk, q Cold nuclear matter: nucleons and nuclei q Why we need QCD factorization approach? q How QCD factorization quantify cold nuclear effect? q Progresses in last many years examples q NLO calculation is necessary, q Summary and outlook
9 Nucleon, nuclei, cold nuclear matter, q QCD landscape of nucleon and nuclei? Color Confinement Asymptotic freedom 200 MeV (1 fm) 2 GeV (1/10 fm) Q (GeV) Probing momentum q In a gas target: ² Nucleons have a large empty space between them ² Effectively, they are quantum mechanically incoherent for the short-range strong interaction, and are free nucleons q In a nuclear target: ² Nucleons are very close to each other rescattering ² Nature of nuclear force, if we only see quarks and gluons? ² Hard probe is not necessarily local coherence at small-x q Magic of heavy ion beams not to be discussed here
10 How to see quarks and gluons inside hadrons? q High energy probes see the boosted partonic structure: Hard probe (t ~ 1/Q < fm): ² Longitudinal momentum fraction x : ² Transverse momentum confined motion: Boost = time dilation Catches the quantum fluctuation! xp Q 1/R QCD Q q Challenge: No modern detector can see quarks and gluons in isolation! q Question: How to quantify the partonic structure if we cannot see quarks and gluons? We need the probe! q Answer: QCD factorization! Not exact, but, controllable approximation! P, P, A,...
11 QCD Factorization: connecting parton to hadron q One hadron: e p σ DIS tot 1 + O QR Hard-part Probe Parton-distribution Structure Power corrections Approximation q Two hadrons: σ DY tot s 1 + O QR q Predictive power: Universal Parton Distributions Controlable corrections,
12 Nuclear effect within leading power factorization q QCD factorization at Leading Power: σ DIS tot + O QR DIS ea (x B,Q; A) X A 1/3 ˆef (x B /x, Q/µ) f/a (x, µ)+o (QR) 2 f DY ea (y, Q; A) X A ˆff 0(y, 1/3,B 1/3 Q; x 1,x 2,µ) f/a (x 1,µ) f 0 /B(x 2,µ)+O (QR) 2 f,f 0 ² Partonic hard parts - ˆ0s are independent of the hadron type! ² At LP, only cold nuclear effect are in npdfs, including EMC effect, anti- and shadowing, ² QCD global analyses of nuclear data to extract npdfs, or model calculations catch some features and helpful, 1
13 Nuclear effect within leading power factorization q QCD factorization at Leading Power: σ DIS tot + O QR DIS ea (x B,Q; A) X A 1/3 ˆef (x B /x, Q/µ) f/a (x, µ)+o (QR) 2 f DY ea (y, Q; A) X A ˆff 0(y, 1/3,B 1/3 Q; x 1,x 2,µ) f/a (x 1,µ) f 0 /B(x 2,µ)+O (QR) 2 f,f 0 ² Partonic hard parts - ˆ0s are independent of the hadron type! ² At LP, only cold nuclear effect are in npdfs, including EMC effect, anti- and shadowing, ² QCD global analyses of nuclear data to extract npdfs, or model calculations catch some features and helpful, Example: 1 Solid EKS98 Dotted EPS08 Limited data leads to large certainties: Three sets nuclear gluon distributions at A=197 Dashed FS2003
14 Gluon distribution at small-x q Run away gluon density at small x? q QCD vs. QED: QCD gluon in a proton: Q 2 QED photon in a positronium: Q 2 d dq 2 xg(x, Q2 ) sn c d dq 2 x + Z 1 x (x, Q2 ) em Z 1 apple 2 3 x (x, Q2 ) dx 0 x 0 x0 [ e +(x0,q 2 )+ e (x 0,Q 2 )] x What causes the low-x rise? gluon radiation non-linear gluon interaction What tames the low-x rise? gluon recombination non-linear gluon interaction power suppressed by (Q s /Q) n dx 0 x 0 x0 G(x 0,Q 2 ) ² At very small-x, proton is black, positronium is still transparent! ² Recombination of large numbers of glue could lead to saturation phenomena In the dipole k 2 ln(1/x) = s K BFKL N(x, k 2 ) s N(x, k 2 ) 2 BK Equ.
15 Gluon distribution at small-x q Run away gluon density at small x? What causes the low-x rise? gluon radiation non-linear gluon interaction What tames the low-x rise? gluon recombination non-linear gluon interaction power suppressed by (Q s /Q) n q Particle vs. wave feature: Gluon saturation Color Glass Condensate Radiation = Recombination & '! ()* 21"& ' 9 pqcd evolution equation! "##""$ = at Q s Leading to a collective gluonic system?!+,-.+,/01 with a universal property of QCD? ,-.6+,/75".58/01 21")! "%"$ new effective theory QCD CGC?
16 Multiple scattering and power corrections q Coherent multiple scattering ( dσ dσ S ) D + dσ ( ) +... ² Naïve power counting: ( dσ D ) ( ) dσ S α s 1 Q 2 R 2 F +α + F α A 1/3 ² Medium parton density: ² For a hard probe: ² Nuclear size enhancement: ² Small x enhancement: F +α F α + α s Q 2 R 2 1 A 1/3 6 x ϕ ( x )
17 QCD factorization for power corrections q Inclusive DIS single hadron state: As the consequence of the OPE, QCD factorization is valid to all powers: h σ phys = ˆσ 2 i [1+C (1,2) α s +C (2,2) α s ] T 2 i/h (x) + ˆσ i 4 Q [1+C (1,4) α 2 s +C (2,4) α 2 s +...] T i/h 4 (x) ˆσ 6 i q Predictive power: Q [1+C (1,6) α 4 s +C (2,6) α 2 s +...] T i/h 6 (x) Power corrections Leading twist ² Coefficient functions are UV&IR safe, independent of the nuclei ² High twist correlations/matrix elements are defined to remove all perturbative collinear divergences of the partonic cross sections ² High twist corrections are fundamental, nonperturbative, and universal extracted from date or from model calculations
18 Tree-level power corrections to DIS on nuclei q Hard probe - Large momentum transfer: q µ with Q q 2 Λ QCD q It could see multiple Lorentz contracted nucleons : 1 Q 1 xp 2R! m $ # & or equivalently x x " p c 1 % 2mR The probe could interact with partons from multiple nucleon coherently q To take care of the coherence, we need to sum over all cuts for a given forward scattering amplitude Scatterings Cuts Collinear factorized correlation functions are independent of the cut!!!
19 Tree-level power corrections to DIS on nuclei q Collinear factorization approximation: Scatterings Cuts q Model approximation: Cuts i A i i ( yi ) + ixi p yi + dy e P F P ² No net color exchange between the bound nucleons inside nuclei ² Nuclear state is a direct product of nucleon states: P A i/ p 1 i p 2 i... p A i ² Only diagonal matrix elements contribute to nuclear matrix element: N N P A Ô 0 Ô i P A A p Ô0 p p Ôi p P A p with p = P A i=1 i=1 i=1 A Z ² Integration of partonic momenta, dx i, fixed by unpinched poles of the scattering diagrams A A
20 Tree-level power corrections to DIS on nuclei q LO contribution to DIS cross section: q NLO contribution: q Nth order contribution: Infrared safe!
21 Tree-level power corrections to DIS on nuclei q Transverse structure function: +Δx Single parameter for the power correction, and is proportional to the same characteristic scale Suppression of cross section if small-x coherent interaction if relevant! q Similar result for longitudinal structure function
22 Neglect LT shadowing upper limit of ξ ξ : GeV Message: One number for all x B, Q, and A dependence!
23 QCD factorization for hadron-hadron collisions q Soft-gluon interactions take place all the time: q Soft-gluon interactions are powerly suppressed q NO factorization beyond 1/Q 2 term! Good for double scattering Drell-Yan Doria, et al (1980) Basu et al. (1984) Brandt, et al (1989)
24 Nuclear size enhanced power corrections q A-enhanced power corrections, A 1/3 /Q 2, may be factorizable: No A 1/3 -enhancement ² Collinear power expansion single hard scale cases: Multi-parton matrix elements independent of the cut! ² TMD factorization two scale observables: Matrix elements of multi-partons with kt sensitive to the cut
25 Transverse momentum broadening Vector boson: γ*, W, Z, J/ψ, Only Initial-state effect for DY Both initial- and final-effects for J/ψ Cronin effect Use heavy quarkonium as an example
26 Quarkonium pt distribution q Quarkonium production is dominated by low p T region q Low p T distribution at collider energies: determined mainly by gluon shower of incoming partons initial-state effect Qiu, Zhang, PRL, 2001 q Final-state interactions suppress the formation of J/ψ: Also modify the p T spectrum move low pt to high pt broadening Final-state effect q Broadening: ² Sensitive to the medium properties ² Perturbatively calculable q R pa at low q T : 1+ Guo, Qiu, Zhang, PRL, PRD 2002 hq 2 T i A 1/3 hq 2 T i hn apple 1+ q2 T hq 2 T i hn
27 A-dependence in P T in p(d)+a q Ratio of x-sections: Guo, Qiu, Zhang, PRL, PRD 2002 Similar formula for J/ψ q Spectrum and ratio: E772 data
28 Quarkonium P T -broadening in p(d)+a q Initial-state only: Kang, Qiu, PRD77(2008) q Experimental data from d+a: Clear A 1/3 dependence But, wrong normalization! Final-state effect octet channel dominated! Only depend on observed quarkonia J.C.Peng, hep-ph/ Johnson,et al, 2007
29 Final-state multiple scattering q Heavy quarkonium is unlikely to be formed when the heavy quark pair was produced Kang, Qiu, PRD77(2008) ² If the formation length: no A-enhancement from final-state interaction ² If the formation length: additional A 1/3 -type enhancement from the final-state interaction q Final-state effect depends on how quarkonium is formed NRQCD model, color evaporation model,
30 q Broadening: Quarkonium P T -broadening in p(d)+a hqt 2 i (I) 8 2 s J/ = C A Nc 2 1 (A1/3 1) 2 hq 2 T i (F ) J/ Kang, Qiu, PRD77(2008) Calculated in both NRQCD and CEM 2 = apple ln(q) x / ˆq, apple = /GeV 2, = J.C.Peng, hep-ph/
31 Quarkonium P T -distribution in p(d)+a q Nuclear modification low pt region: d AB dyd 2 p T d AB dy apple 1 (hp 2 T i NN + hp 2 T i AB) e p 2 T /(hp2 T i NN+ hp 2 T i AB) E772 data ALICE data
32 NLO contribution to the broadening q Drell-Yan broadening: Z.B. Kang, J.W. Qiu, X.N. Wang, H. Xing, 2016 PRD q LO calculation: q NLO contribution: X. Guo, 1998 R.J. Fries, 2013 IR safe & Well-behaved
33 Summary q QCD factorization provides the necessary connection between QCD partonic dynamics and the measured hadronic cross sections q In terms of QCD factorization approach, cold nuclear effects are organized into two types: ² A-dependence of npdfs, and ² A-dependence of multiple scattering in nuclei q QCD multiple scattering is closely connected to the power corrections in QCD factorization approach q QCD factorization could, in general, be valid ONLY for the FIRST power corrections in hadronic collisions q However, nuclear sized enhanced power corrections in p+a collisions could be valid beyond the FIRST power corrections q QCD factorization for power corrections is verified at NLO for DY! Thank you!
34 Backup slides
35 Color evaporation model q Double scattering A 1/3 dependence: q Multiparton correlation: q Broadening twice of initial-state effect: if gluon-gluon dominates, and if r F > R A
36 NRQCD model q Cross section: q Broadening: Hard parts: Only color octet channel contributes q Leading features:
37 Big questions to be answered, q Emergence of a hadron? = Q2 2mx Control of ν and medium length! D 0 q Heavy quark energy loss: - Mass dependence of fragmentation π pion D 0 Need the collider energy of EIC and its control on parton kinematics
Suppression of Heavy Quarkonium Production in pa Collisions
Suppression of Heavy Quarkonium Production in pa Collisions Jianwei Qiu Brookhaven National Laboratory Based on works done with Z.-B. Kang, G. Sterman, P. Sun, J.P. Vary, B.W. Xiao, F. Yuan, X.F. Zhang,
More informationProbing nucleon structure by using a polarized proton beam
Workshop on Hadron Physics in China and Opportunities with 12 GeV Jlab July 31 August 1, 2009 Physics Department, Lanzhou University, Lanzhou, China Probing nucleon structure by using a polarized proton
More informationFactorization, Evolution and Soft factors
Factorization, Evolution and Soft factors Jianwei Qiu Brookhaven National Laboratory INT Workshop: Perturbative and nonperturbative aspects of QCD at collider energies University of Washington, Seattle,
More informationScale dependence of Twist-3 correlation functions
Scale dependence of Twist-3 correlation functions Jianwei Qiu Brookhaven National Laboratory Based on work with Z. Kang QCD Evolution Workshop: from collinear to non collinear case Thomas Jefferson National
More informationQCD Collinear Factorization for Single Transverse Spin Asymmetries
INT workshop on 3D parton structure of nucleon encoded in GPD s and TMD s September 14 18, 2009 QCD Collinear Factorization for Single Transverse Spin Asymmetries Iowa State University Based on work with
More informationOpportunities in low x physics at a future Electron-Ion Collider (EIC) facility
1 Opportunities in low x physics at a future Electron-Ion Collider (EIC) facility Motivation Quantum Chromo Dynamics Proton=uud Visible Universe Galaxies, stars, people, Silent Partners: Protons & Neutrons
More informationIntroduction to Quantum Chromodynamics (QCD)
Introduction to Quantum Chromodynamics (QCD) Jianwei Qiu Theory Center, Jefferson Lab May 29 June 15, 2018 Lecture One The plan for my four lectures q The Goal: To understand the strong interaction dynamics
More informationProbing small-x gluons in hadrons and nuclei. Kazuhiro Watanabe. Old Dominion University. Jan 4, 2017 Jefferson Lab
Probing small-x gluons in hadrons and nuclei Kazuhiro Watanabe Old Dominion University Jan 4, 2017 Jefferson Lab Kazuhiro Watanabe (ODU) Probing gluon saturation dynamics at small-x Jan 4, 2017 1 / 16
More informationPhenomenology of prompt photon production. in p A and A A collisions
Phenomenology of prompt photon production in p A and A A collisions François Arleo LAPTH, Annecy LPT Orsay April 2011 Francois Arleo (LAPTH) Prompt γ in p A and A A collisions LPT Orsay April 2011 1 /
More informationQCD and Rescattering in Nuclear Targets Lecture 2
QCD and Rescattering in Nuclear Targets Lecture Jianwei Qiu Iowa State University The 1 st Annual Hampton University Graduate Studies Program (HUGS 006) June 5-3, 006 Jefferson Lab, Newport News, Virginia
More informationusing photons in p A and A A collisions
Probing parton densities and energy loss processes using photons in p A and A A collisions François Arleo LAPTH, Annecy High p Probes of High Density QCD May 2011 Francois Arleo (LAPTH) Prompt γ in p A
More informationQCD Factorization and Transverse Single-Spin Asymmetry in ep collisions
QCD Factorization and Transverse Single-Spin Asymmetry in ep collisions Jianwei Qiu Brookhaven National Laboratory Theory seminar at Jefferson Lab, November 7, 2011 Jefferson Lab, Newport News, VA Based
More information2. HEAVY QUARK PRODUCTION
2. HEAVY QUARK PRODUCTION In this chapter a brief overview of the theoretical and experimental knowledge of heavy quark production is given. In particular the production of open beauty and J/ψ in hadronic
More informationTMD Theory and TMD Topical Collaboration
3D Nucleon Tomography Workshop Modeling and Extracting Methodology March 15-17, 2017 Jefferson Lab, Newport News, VA TMD Theory and TMD Topical Collaboration Jianwei Qiu Theory Center, Jefferson Lab 3D
More informationThe Electron-Ion Collider: Exploring the science of Nuclear Femtography
The Nature of Hadron Mass and Quark-Gluon Confinement from JLab Experiments in the 12-GeV Era The Electron-Ion Collider: Exploring the science of Nuclear Femtography Jianwei Qiu Theory Center, Jefferson
More informationTHE NUCLEUS AS A QCD LABORATORY: HADRONIZATION, 3D TOMOGRAPHY, AND MORE
rhtjhtyhy EINN 2017 NOVEMBER 1, 2017 PAPHOS, CYPRUS THE NUCLEUS AS A QCD LABORATORY: HADRONIZATION, 3D TOMOGRAPHY, AND MORE KAWTAR HAFIDI Argonne National Laboratory is a U.S. Department of Energy laboratory
More informationNLO weighted Sivers asymmetry in SIDIS and Drell-Yan: three-gluon correlator
NLO weighted Sivers asymmetry in SIDIS and Drell-Yan: three-gluon correlator Lingyun Dai Indiana University Based on the work done with Kang, Prokudin, Vitev arxiv:1409.5851, and in preparation 1 2 Outlines
More informationProbing parton densities with γ and γ +Q production. in p A collisions. François Arleo. Workshop on proton-nucleus collisions at the LHC
Probing parton densities with γ and γ +Q production in p A collisions François Arleo LLR Palaiseau & LAPTh, Annecy Workshop on proton-nucleus collisions at the LHC Trento, May 2013 Francois Arleo (LLR
More informationPerturbative origin of azimuthal anisotropy in nuclear collisions
Perturbative origin of azimuthal anisotropy in nuclear collisions Amir H. Rezaeian Uiversidad Tecnica Federico Santa Maria, Valparaiso Sixth International Conference on Perspectives in Hadronic Physics
More informationHadronization with JLab 6/12 GeV
Hadronization with JLab 6/12 GeV Next generation nuclear physics with JLab12 and EIC Florida International University February 10-13th, 2016 Lamiaa El Fassi (On behalf of EG2 and CLAS Collaborations) Outline
More informationMatching collinear and small x factorization calculations for inclusive hadron production in pa collisions
Matching collinear and small x factorization calculations for inclusive hadron production in pa collisions The Pennsylvania State University, Physics Department, University Park, PA 16802 H. Niewodniczański
More informationCGC effects on J/ψ production
CGC effects on J/ψ production Kirill Tuchin based on work with D. Kharzeev, G. Levin and M. Nardi 6th Winter Workshop on Nuclear Dynamics Jan.-9 Ocho Rios, Jamaica Introduction I Inclusive light hadron
More informationStudies on transverse spin properties of nucleons at PHENIX
Studies on transverse spin properties of nucleons at PHENIX Pacific Spin 2015 Academia Sinica in Taipei, Taiwan October 8, 2015 Yuji Goto (RIKEN/RBRC) 3D structure of the nucleon Conclusive understanding
More informationResults with Hard Probes High p T Particle & Jet Suppression from RHIC to LHC
Results with Hard Probes High p T Particle & Jet Suppression from RHIC to LHC PHENIX! AGS! RHIC! STAR! Cover 3 decades of energy in center-of-mass s NN = 2.76 TeV 5.5 TeV (2015) CMS LHC! s NN = 5-200 GeV
More informationContributions to our Understanding of TMDs from Polarized Proton Collisions at STAR
Contributions to our Understanding of TMDs from Polarized Proton Collisions at STAR Stephen Trentalange University of California at Los Angeles, for the STAR Collaboration QCD-N16 Bilbao, Spain July 15,
More informationProbing the small-x regime through photonuclear reactions at LHC
Probing the small-x regime through photonuclear reactions at LHC 1/ 26 Probing the small-x regime through photonuclear reactions at LHC G.G. Silveira gustavo.silveira@ufrgs.br High Energy Physics Phenomenology
More informationElectron-Ion Collider Taking us to the next QCD Frontier
QCD Evolution 2014 Workshop at Santa Fe, NM (May 12 16, 2014) Electron-Ion Collider Taking us to the next QCD Frontier Jianwei Qiu Brookhaven National Laboratory Acknowledgement: Much of the physics presented
More informationSCET approach to energy loss. Zhongbo Kang Los Alamos National Laboratory
SCET approach to energy loss Zhongbo Kang Los Alamos National Laboratory Symposium on Jet and Electromagnetic Tomography of Dense Matter June 26-27, 2015 Outline Introduction SCET G = SCET with Glauber
More informationOverview of Quarkonium Production in Heavy-Ion Collisions at LHC
XLV International Symposium on Multiparticle Dynamics (ISMD2015) Wildbad Kreuth, Germany, October 4-9, 2015 Overview of Quarkonium Production in Heavy-Ion Collisions at LHC Byungsik Hong (Korea University)
More informationIntroduction to Perturbative QCD
Introduction to Perturbative QCD Lecture 3 Jianwei Qiu Iowa State University/Argonne National Laboratory PHENIX Spinfest at RIKEN 007 June 11 - July 7, 007 RIKEN Wako Campus, Wako, Japan June 6, 007 1
More informationNuclear GPDs and DVCS in Collider kinematics. Vadim Guzey. Theory Center, Jefferson Lab. Outline
Nuclear GPDs and DVCS in Collider kinematics Vadim Guzey Theory Center, Jefferson Lab Introduction Outline Nuclear PDFs Nuclear GPDs Predictions for DVCS Conclusions Introduction e(k ) Deeply Virtual Compton
More informationPoS(DIS2017)208. Nuclear PDF studies with proton-lead measurements with the ALICE detector
Nuclear PDF studies with proton-lead measurements with the ALICE detector a,b for the ALICE Collaboration a Institute for Subatomic Physics, Department for Physics and Astronomy and EMMEφ, Faculty of Science,
More informationIntroduction to High Energy Nuclear Collisions I (QCD at high gluon density) Jamal Jalilian-Marian Baruch College, City University of New York
Introduction to High Energy Nuclear Collisions I (QCD at high gluon density) Jamal Jalilian-Marian Baruch College, City University of New York Many thanks to my colleagues, A. Deshpande, F. Gelis, B. Surrow
More informationQCD and Rescattering in Nuclear Targets Lecture 5
QCD and Rescattering in Nuclear argets Lecture 5 Jianwei Qiu Iowa State University he 1 st Annual Hampton University Graduate Studies Program (HUGS 006) June 5-3, 006 Jefferson Lab, Newport News, Virginia
More informationIntroduction to Quantum ChromoDynamics and the parton model
Introduction to Quantum ChromoDynamics and the parton model Pavel Nadolsky Southern Methodist University Dallas, TX, USA TMD Collaboration Summer School June 22, 2017 Objectives of the lectures Review
More informationQuarkonia physics in Heavy Ion Collisions. Hugo Pereira Da Costa CEA/IRFU Rencontres LHC France Friday, April
Quarkonia physics in Heavy Ion Collisions Hugo Pereira Da Costa CEA/IRFU Rencontres LHC France Friday, April 5 2013 1 2 Contents Introduction (QGP, Heavy Ion Collisions, Quarkonia) Quarkonia at the SPS
More informationRecent developments on Perturbative QCD (Part I)
Recent developments on Perturbative QCD (Part I) Jianwei Qiu Iowa State University/Argonne National Laboratory 威海高能物理前沿暑期论坛 (Weihai Summer Topic Seminar On the Frontiers of High Energy Physics) 山东大学 -
More informationSpin physics at Electron-Ion Collider
Spin physics at Electron-Ion Collider Jianwei Qiu Brookhaven National Laboratory Workshop on The Science Case for an EIC November 16-19, 2010; INT, University of Washington, Seattle, WA Outline of my talk
More informationHigh Energy Transverse Single-Spin Asymmetry Past, Present and Future
High Energy Transverse Single-Spin Asymmetry Past, Present and Future Jianwei Qiu Brookhaven National Laboratory Stony Brook University Transverse single-spin asymmetry (TSSA) q Consistently observed for
More informationIntroduction to Quantum Chromodynamics (QCD)
Introduction to Quantum Chromodynamics (QCD) Jianwei Qiu August 16 19, 018 Four Lectures The 3 rd WHEPS, August 16-4, 018, Weihai, Shandong q The Goal: The plan for my four lectures To understand the strong
More informationZhong-Bo Kang Los Alamos National Laboratory
Introduction to pqcd and Jets: lecture 1 Zhong-Bo Kang Los Alamos National Laboratory Jet Collaboration Summer School University of California, Davis July 19 1, 014 Selected references on QCD! QCD and
More informationCold Nuclear Effects in J/ψ Production
Stéphane Peigné SUBATECH, Nantes, France Quarkonium 3 Beijing, China, April 3 Talk based on Arleo, S.P., Sami, PRD 83 () 36 Arleo, S.P., PRL 9 () 3 Arleo, S.P., JHEP 33 (3) Arleo, Kolevatov, S.P., Rustamova,
More informationZhong-Bo Kang Los Alamos National Laboratory
Introduction to pqcd and Jets: lecture 3 Zhong-Bo Kang Los Alamos National Laboratory Jet Collaboration Summer School University of California, Davis July 19 21, 2014 Selected references on QCD QCD and
More informationUpdate on the Hadron Structure Explored at Current and Future Facilities
3D Nucleon Tomography Workshop Modeling and Extracting Methodology Update on the Hadron Structure Explored at Current and Future Facilities Jianwei Qiu September 25-29, 2017 Salamanca, Spin Atomic Structure
More informationOpportunities with diffraction
Opportunities with diffraction Krzysztof Golec-Biernat Institute of Nuclear Physics in Kraków IWHSS17, Cortona, 2 5 April 2017 Krzysztof Golec-Biernat Opportunities with diffraction 1 / 29 Plan Diffraction
More informationA new explanation to the cold nuclear matter effects in heavy ion. collisions
A new explanation to the cold nuclear matter effects in heavy ion collisions Zhi-Feng Liu (Institute of Geophysics, Shijiazhuang Economic University, Shijiazhuang, China) The J/Psi cross section ratios
More informationSingle Spin Asymmetry at large x F and k T
1 Single Spin Asymmetry at large x F and k T Paul Hoyer University of Helsinki Workshop on Transverse momentum, spin, and position distributions of partons in hadrons ECT*, 11-15 June 2007 PH and M. Järvinen,
More informationCoherent and Incoherent Nuclear Exclusive Processes
Coherent and Incoherent Nuclear Exclusive Processes Vadim Guzey Electron-Ion Collider Workshop: Electron-Nucleon Exclusive Reactions Rutgers University, March 14-15, 2010 Outline Coherent and incoherent
More informationJet Physics with ALICE
Jet Physics with ALICE Oliver Busch for the ALICE collaboration Oliver Busch Tsukuba 2014 /03/13 1 Outline introduction results from pp jets in heavy-ion collisions results from Pb-Pb collisions jets in
More informationParton propagation and energy loss at an EIC
Parton propagation and energy loss at an EIC Alberto Accardi Hampton U. and Jefferson Lab POETIC 7 Temple U., 14 November 2016 With many thanks to M.Baker, W.Brooks, V.Morozov, I.Vitev for help preparing
More informationLHC Heavy Ion Physics Lecture 5: Jets, W, Z, photons
LHC Heavy Ion Physics Lecture 5: Jets, W, Z, photons HUGS 2015 Bolek Wyslouch Techniques to study the plasma Radiation of hadrons Azimuthal asymmetry and radial expansion Energy loss by quarks, gluons
More informationQuarkonium Production at J-PARC
Quarkonium Production at J-PARC Jen-Chieh Peng University of Illinois at Urbana-Champaign J-PARC Meeting for Spin and Hadron Physics RIKEN, April 7-8, 008 Outline Quarkonium Production at J-PARC with Unpolarized
More informationPhysique des Particules Avancées 2
Physique des Particules Avancées Interactions Fortes et Interactions Faibles Leçon 6 Les collisions p p (http://dpnc.unige.ch/~bravar/ppa/l6) enseignant Alessandro Bravar Alessandro.Bravar@unige.ch tél.:
More informationQuarkonia and heavy-quark production in proton and nuclear collisions at the LHC
Quarkonia and heavy-quark production in proton and nuclear collisions at the LHC Michael Schmelling / MPI for Nuclear Physics Introduction Double Parton Scattering Cold Nuclear Matter Effects Quark Gluon
More informationGluons at high x in Nuclei at EIC
Gluons at high x in Nuclei at EIC in collaboration with: E. Chudakov, D. Higinbotham, C. Hyde, C. Weiss Jefferson Lab DNP 2015 Fall meeting, Santa Fe, NM Outline Motivation HERA and ZEUS experience EIC
More informationMultiple Parton Interactions Physics
Some entertaining aspects of Multiple Parton Interactions Physics Yuri Dokshitzer LPTHE, Jussieu, Paris & PNPI, St Petersburg GGI 13.09 2011 Multi-Parton Interactions work in collaboration with B.Blok,
More informationNUCLEAR BROADENING OF OUT OF PLANE TRANSVERSE MOMENTUM IN DI-JET PRODUCTION
NUCLEAR BROADENING OF OUT OF PLANE TRANSVERSE MOMENTUM IN DI-JET PRODUCTION arxiv:hep-ph/9407386v1 27 Jul 1994 Boris Z. Kopeliovich Joint Institute for Nuclear Research Head Post Office, P.O. Box 79, 101000
More informationGluon TMDs and Heavy Quark Production at an EIC
Gluon TMDs and Heavy Quark Production at an EIC Cristian Pisano INT-7-3 Workshop Hadron imaging at Jefferson Lab and at a future EIC September 25-29 27 Seattle (USA) Quark TMDs Angeles-Martinez et al.,
More informationModels of the Nucleon & Parton Distribution Functions
11th CTEQ Summer School on QCD Analysis and Phenomenology Madison, Wisconsin, June 22-30, 2004 Models of the Nucleon & Parton Distribution Functions Wally Melnitchouk Jefferson Lab Outline Introduction
More informationPhysics at LHC. lecture one. Sven-Olaf Moch. DESY, Zeuthen. in collaboration with Martin zur Nedden
Physics at LHC lecture one Sven-Olaf Moch Sven-Olaf.Moch@desy.de DESY, Zeuthen in collaboration with Martin zur Nedden Humboldt-Universität, October 22, 2007, Berlin Sven-Olaf Moch Physics at LHC p.1 LHC
More informationarxiv:hep-ph/ v1 4 Nov 1998
Gluon- vs. Sea quark-shadowing N. Hammon, H. Stöcker, W. Greiner 1 arxiv:hep-ph/9811242v1 4 Nov 1998 Institut Für Theoretische Physik Robert-Mayer Str. 10 Johann Wolfgang Goethe-Universität 60054 Frankfurt
More informationIntroduction to the physics of hard probes in hadron collisions: lecture I. Michelangelo Mangano TH Division, CERN
Introduction to the physics of hard probes in hadron collisions: lecture I Michelangelo Mangano TH Division, CERN michelangelo.mangano@cern.ch Contents The structure of the proton the initial-state : parton
More informationThe Quark-Gluon Plasma and the ALICE Experiment
The Quark-Gluon Plasma and the ALICE Experiment David Evans The University of Birmingham IoP Nuclear Physics Conference 7 th April 2009 David Evans IoP Nuclear Physics Conference 2009 1 Outline of Talk
More informationALICE results in p Pb collisions at the LHC
ALICE results in p Pb collisions at the LHC Diego Stocco for the ALICE Collaboration (Ecole des Mines, CNRS-INP3, Université de Nantes) Nantes, France Outline Motivation Goal p Pb collisions Experimental
More informationProbing Nuclear Color States with J/Ψ and φ
Probing Nuclear Color States with J/Ψ and φ Michael Paolone Temple University Next Generation Nuclear Physics with JLab12 and the EIC FIU - Miami, Florida February 12th 2016 J/Ψ and φ experiments at a
More informationHigh-p T Neutral Pion Production in Heavy Ion Collisions at SPS and RHIC
High- Neutral Pion Production in Heavy Ion Collisions at SPS and RHIC K. Reygers for the WA98 and the PHENIX collaboration Institut für Kernphysik der Universität Münster Wilhelm-Klemm-Str. 9, D-4849 Münster,
More informationarxiv: v1 [hep-ph] 22 Sep 2017
arxiv:709.0776v [hep-ph] 22 Sep 207 Institut für heoretische Physik, Westfälische Wilhelms-Universität Münster, Wilhelm-Klemm-Straße 9, D-4849 Münster, Germany E-mail: michael.klasen@uni-muenster.de We
More informationPartonic transport simulations of jet quenching
Partonic transport simulations of jet quenching Z. Xu, C. Greiner Institut für Theoretische Physik J. W. Goethe-Universität, Frankfurt Outline motivation introduction to the model simulations of Au+Au
More informationHigh Energy Physics. Lecture 9. Deep Inelastic Scattering Scaling Violation. HEP Lecture 9 1
High Energy Physics Lecture 9 Deep Inelastic Scattering Scaling Violation HEP Lecture 9 1 Deep Inelastic Scattering: The reaction equation of DIS is written e+ p e+ X where X is a system of outgoing hadrons
More informationTMDs at Electron Ion Collider Alexei Prokudin
TMDs at Electron Ion Collider Alexei Prokudin 2 3 Why Electron Ion Collider? Eur. Phys. J. A (2016) 52: 268 DOI 10.1140/epja/i2016-16268-9 THE EUROPEAN PHYSICAL JOURNAL A Review Electron-Ion Collider:
More informationZhongbo Kang. QCD evolution and resummation for transverse momentum distribution. Theoretical Division, Group T-2 Los Alamos National Laboratory
QCD evolution and resummation for transverse momentum distribution Zhongbo Kang Theoretical Division, Group T-2 Los Alamos National Laboratory QCD Evolution Worshop Jefferson Lab, Newport News, VA Outline:
More informationAN INTRODUCTION TO QCD
AN INTRODUCTION TO QCD Frank Petriello Northwestern U. & ANL TASI 2013: The Higgs Boson and Beyond June 3-7, 2013 1 Outline We ll begin with motivation for the continued study of QCD, especially in the
More informationIntroduction to perturbative QCD and factorization
Introduction to perturbative QCD and factorization Part 1 M. Diehl Deutsches Elektronen-Synchroton DESY Ecole Joliot Curie 2018 DESY Plan of lectures 0. Brief introduction 1. Renormalisation, running coupling,
More informationThe LHC p+pb run from the nuclear PDF perspective
Department of Physics, University of Jyväskylä, P.O. Box 35, FI-40014 University of Jyväskylä, Finland Helsinki Institute of Physics, University of Helsinki, P.O. Box 64, FI-00014, Finland E-mail: hannu.paukkunen@jyu.fi
More informationThreshold 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 informationPrompt Photon Production in p-a Collisions at LHC and the Extraction of Gluon Shadowing
Prompt Photon Production in p-a Collisions at LHC and the Extraction of Gluon Shadowing F. Arleo, T. Gousset To cite this version: F. Arleo, T. Gousset. Prompt Photon Production in p-a Collisions at LHC
More informationRecent transverse spin results from STAR
1 STAR! Recent transverse spin results from STAR Qinghua Xu, Shandong University PanSpin215, Taipei, October 8, 215! Outline 2 Introduction Single spin asymmetries in the forward region Mid-rapidity hadron-jet
More informationLHCb results from proton-ion collisions
LHCb results from proton-ion collisions L. Massacrier on behalf of the LHCb collaboration Laboratoire de l Accélérateur Linéaire, Orsay Institut de Physique Nucléaire d Orsay XLV International Symposium
More informationTransport Theoretical Studies of Hadron Attenuation in Nuclear DIS. Model Results Summary & Outlook
Transport Theoretical Studies of Hadron Attenuation in Nuclear DIS T. Falter, W. Cassing,, K. Gallmeister,, U. Mosel Contents: Motivation Model Results Summary & Outlook Motivation elementary en reaction
More informationarxiv:nucl-th/ v1 5 Sep 2000
Suppression of Quarkonium Production in Heavy Ion Collisions at RHIC and LHC arxiv:nucl-th/0009008v1 5 Sep 000 1. Introduction L. Gerland, L. Frankfurt, M. Strikman, H. Stöcker, W. Greiner Institut für
More informationHeavy-ion collisions in a fixed target mode at the LHC beams
Heavy-ion collisions in a fixed target mode at the LHC beams Alexey Kurepin 1, and Nataliya Topilskaya 1, 1 Institute for Nuclear Research, RAS, Moscow, Russia Abstract. The interaction of high-energy
More informationPhoton and neutral meson production in pp and PbPb collisions at ALICE
Photon and neutral meson production in pp and PbPb collisions at ALICE Dieter Roehrich University of Bergen, Norway for the ALICE Collaboration Nuclear collisions at the LHC Photons as a probe for the
More informationVector meson photoproduction in ultra-peripheral p-pb collisions measured using the ALICE detector
Vector meson photoproduction in ultra-peripheral p-pb collisions measured using the ALICE detector Jaroslav Adam On behalf of the ALICE Collaboration Faculty of Nuclear Sciences and Physical Engineering
More informationPoS(LHC07)034. Dijet correlations in pp collisions at RHIC
Institute of Nuclear Physics, PL-31-342 Cracow, Poland and University of Rzeszów, PL-35-959 Rzeszów, Poland E-mail: Antoni.Szczurek@ifj.edu.pl Anna Rybarska Institute of Nuclear Physics, PL-31-342 Cracow,
More informationGPDs and TMDs at Electron-Ion Collider. Workshop on hadron tomography at J-PARC and KEKB January 6 th, 2017 KEK, Tsukuba, Japan Yuji Goto (RIKEN)
GPDs and TMDs at Electron-Ion Collider Workshop on hadron tomography at J-PARC and KEKB January 6 th, 2017 KEK, Tsukuba, Japan Yuji Goto (RIKEN) Electron-Ion Collider World s first polarized electron +
More informationarxiv: v1 [nucl-ex] 7 Nov 2009
Low-x QCD at the LHC with the ALICE detector Magdalena Malek for the ALICE Collaboration arxiv:0911.1458v1 [nucl-ex] 7 Nov 2009 Institut de Physique Nucléaire d Orsay (IPNO) - France CNRS: UMR8608 - IN2P3
More informationMeasurements of Proton Structure at Low Q 2 at HERA
Measurements of Proton Structure at Low Q 2 at HERA Victor Lendermann Kirchhoff-Institut für Physik, Universität Heidelberg Im Neuenheimer Feld 227, 69120 Heidelberg Germany Abstract. Inclusive ep scattering
More informationTransverse Spin Effects and k T -dependent Functions
Transverse Spin Effects and k T -dependent Functions Daniël Boer Free University, Amsterdam Outline Left-right single spin asymmetries Azimuthal spin asymmetries; Sivers and Collins effects Transversity
More informationHeavy Ion Physics at ATLAS, CMS and LHCb
Heavy Ion Physics at ALAS, CMS and Michael Schmelling - MPI for Nuclear Physics on behalf of the collaborations Outline Introduction Quarkonia production Correlation studies Ultra-peripheral collisions
More informationHadron Mass Effects on Kaon Multiplicities: HERMES vs. COMPASS
Hadron Mass Effects on Kaon Multiplicities: HERMES vs. COMPASS Juan Guerrero Hampton University & Jefferson Lab QCD evolution 2017 May 26, 2017 Based on: J. G., J. Ethier, A. Accardi, S. Casper,W. Melnitchouk,
More informationCOMPASS Measurements of Asymmetry Amplitudes in the Drell-Yan Process Observed from Scattering Pions off a Transversely Polarized Proton Target
COMPASS Measurements of Asymmetry Amplitudes in the Drell-Yan Process Observed from Scattering Pions off a Transversely Polarized Proton Target University of Illinois E-mail: rsheitz2@illinois.edu On behalf
More informationPhysics at Hadron Colliders Partons and PDFs
Physics at Hadron Colliders Partons and PDFs Marina Cobal Thanks to D. Bettoni Università di Udine 1 2 How to probe the nucleon / quarks? Scatter high-energy lepton off a proton: Deep-Inelastic Scattering
More informationDouble-Longitudinal Spin Asymmetry in Single- Inclusive Lepton Scattering
QCD Evolution 2017, JLab, May 22-26, 2017 Double-Longitudinal Spin Asymmetry in Single- Inclusive Lepton Scattering Marc Schlegel Institute for Theoretical Physics University of Tübingen in collaboration
More informationDiffractive dijet photoproduction in UPCs at the LHC
Diffractive dijet photoproduction in UPCs at the LHC V. Guzey Petersburg Nuclear Physics Institute (PNPI), National Research Center Kurchatov Institute, Gatchina, Russia Outline: l Diffractive dijet photoproduction
More informationlight-cone (LC) variables
light-cone (LC) variables 4-vector a µ scalar product metric LC basis : transverse metric 24-Apr-13 1 hadron target at rest inclusive DIS target absorbes momentum from γ * ; for example, if q z P z =0
More informationHeavy Flavours in ALICE
Heavy Flavours in ALICE Yvonne Pachmayer, University of Heidelberg for the ALICE Collaboration Motivation Cold nuclear matter effects Results from p-pb collisions Open heavy flavour J/ψ, ψ(2s), ϒ(1S) Comparison
More informationDEEP INELASTIC SCATTERING
DEEP INELASTIC SCATTERING Electron scattering off nucleons (Fig 7.1): 1) Elastic scattering: E = E (θ) 2) Inelastic scattering: No 1-to-1 relationship between E and θ Inelastic scattering: nucleon gets
More informationIntroduction to particle physics Lecture 7
Introduction to particle physics Lecture 7 Frank Krauss IPPP Durham U Durham, Epiphany term 2009 Outline 1 Deep-inelastic scattering and the structure of protons 2 Elastic scattering Scattering on extended
More informationSaturation Physics and Di-Hadron Correlations
Saturation Physics and Di-Hadron Correlations Bo-Wen Xiao Pennsylvania State University and Institute of Particle Physics, Central China Normal University POETIC August 2012 1 / 24 Outline 1 Introduction
More informationKinematical correlations: from RHIC to LHC
: from RHIC to LHC Institute of Nuclear Physics, PL-31-342 Cracow, Poland and Univeristy of Rzeszów, PL-35-959 Cracow, Poland E-mail: Antoni.Szczurek@ifj.edu.pl Kinematical correlations between outgoing
More information