3/8/20161 Nucleon Tomography --Parton Imaging in 3D Feng Yuan Lawrence Berkeley National Laboratory.

Slides:



Advertisements
Similar presentations
December 17, 2004 JLab Hall A Upgrade 1 Semi-Inclusive DIS --opportunities at JLab upgrade Feng Yuan RBRC, Brookhaven National Laboratory.
Advertisements

Transversity and Transverse-Momentum-Dependent Partonic Functions Alessandro Bacchetta.
June 21, 2005 RHIC & AGS USER MEETING-SPIN 1 (Single) Transverse Spin Physics -- from DIS to hadron collider Feng Yuan, RBRC, Brookhaven National Laboratory.
Longitudinal Spin at RHIC 29 th Winter Workshop on Nuclear Dynamics February 7, 2013 Cameron McKinney.
Constraining the polarized gluon PDF in polarized pp collisions at RHIC Frank Ellinghaus University of Colorado (for the PHENIX and STAR Collaborations)
Polarized structure functions Piet Mulders ‘Lepton scattering and the structure of nucleons and nuclei’ September 16-24, 2004
Cold nuclear matter effects on dilepton and photon production Zhong-Bo Kang Los Alamos National Laboratory Thermal Radiation Workshop RBRC, Brookhaven.
Ahmad Idilbi Uni. Regensburg TUM November 30, 2011 M. G. Echevarria, A. Idilbi, I. Scimemi, arXive: : [hep-ph] M. G. Echevarria, A. Idilbi, I.
QCD Map of the Proton Xiangdong Ji University of Maryland.
Xiangdong Ji University of Maryland/SJTU Physics of gluon polarization Jlab, May 9, 2013.
9/17/20151 Probing the Dense Medium in Cold Nuclei -- Gluon Saturation at small-x Bowen Xiao (CCNU) Feng Yuan (LBNL)
Xiangdong Ji University of Maryland/SJTU
9/19/20151 Nucleon Spin: Final Solution at the EIC Feng Yuan Lawrence Berkeley National Laboratory.
9/19/20151 Semi-inclusive DIS: factorization Feng Yuan Lawrence Berkeley National Laboratory RBRC, Brookhaven National Laboratory.
THE DEEP INELASTIC SCATTERING ON THE POLARIZED NUCLEONS AT EIC E.S.Timoshin, S.I.Timoshin.
Zhongbo Kang Los Alamos National Laboratory Transverse single spin asymmetry of the W production at RHIC RHIC-AGS Annual Users’ Meeting 2015 June 9-12,
Future Opportunities at an Electron-Ion Collider Oleg Eyser Brookhaven National Laboratory.
Theory Introduction to Semi-Inclusive Physics
Spin Azimuthal Asymmetries in Semi-Inclusive DIS at JLAB  Nucleon spin & transverse momentum of partons  Transverse-momentum dependent distributions.
UK Hadron Physics D. G. Ireland 10 October 2014 NuPECC Meeting, Edinburgh.
J/ψ Production in pPb Collisions at the LHC Zhang, Hong-Fei Third Military Medical University.
Quark Helicity Distribution at large-x Collaborators: H. Avakian, S. Brodsky, A. Deur, arXiv: [hep-ph] Feng Yuan Lawrence Berkeley National Laboratory.
High-Energy QCD Spin Physics Xiangdong Ji Maryland Center for Fundamental Physics University of Maryland DIS 2008, April 7, 2008, London.
1 Transversely polarized target for CLAS and CLAS12  Introduction  Structure of nucleon and 3D parton distributions  Semi-Inclusive processes and TMD.
Probing the Fundamental Structure of the Nuclear Building Blocks with Jlab 12 GeV Upgrade Xiangdong Ji University of Maryland — Jlab 12 GeV upgrade review,
6/1/20161 TMD Evolution Feng Yuan Lawrence Berkeley National Laboratory.
May 18-20, 2005 SIR05 JLab 1 P ? Dependence of SSA -- from nonpert. to pert. Feng Yuan, RBRC, Brookhaven National Laboratory References: Ji, Ma, Yuan,
11/5/20151 Energy Evolution of Sivers asymmetry in Hard Processes Feng Yuan Lawrence Berkeley National Laboratory.
Zhongbo Kang Los Alamos National Laboratory QCD structure of the nucleon and spin physics Lecture 5 & 6: TMD factorization and phenomenology HUGS 2015,
Spin structure of the nucleon
11/28/20151 QCD resummation in Higgs Boson Plus Jet Production Feng Yuan Lawrence Berkeley National Laboratory Ref: Peng Sun, C.-P. Yuan, Feng Yuan, PRL.
General Discussion some general remarks some questions.
1 E.C. Aschenauer Recent results from lepton proton scattering on the spin structure of the nucleon.
Transverse Spin Physics: Recent Developments
Single-Spin Asymmetries at CLAS  Transverse momentum of quarks and spin-azimuthal asymmetries  Target single-spin asymmetries  Beam single-spin asymmetries.
12/13/20151 Transverse Spin Overview: Theory Perspective Feng Yuan Lawrence Berkeley National Laboratory RBRC, Brookhaven National Laboratory.
Strangeness and Spin in Fundamental Physics Mauro Anselmino: The transverse spin structure of the nucleon Delia Hasch: The transverse spin structure of.
The Quark Structure of the Nucleon Inti Lehmann & Ralf Kaiser University of Glasgow Cosener’s House Meeting 23/05/2007 Nucleon Structure Generalised Parton.
1 Probing Spin and Flavor Structures of the Nucleon with Hadron Beams Flavor and spin structures of the nucleons –Overview and recent results Future prospects.
Measurements with Polarized Hadrons T.-A. Shibata Tokyo Institute of Technology Aug 15, 2003 Lepton-Photon 2003.
HERMES による パートン helicity 分布関数の QCD 解析 Tokyo Inst. of Tech. 1. Quantum Chromo-Dynamics (QCD) 2. Parton Helicity Distribution and Nucleon Spin Problem 3.
EIC, Nucleon Spin Structure, Lattice QCD Xiangdong Ji University of Maryland.
1/24/20161 Resummation in High Energy Scattering -- BFKL vs Sudakov Feng Yuan Lawrence Berkeley National Laboratory Refs: Mueller, Xiao, Yuan, PRL110,
For SoLID Collaboration Meeting Spokespersons Jian-Ping Chen (JLab) Jin Huang (MIT) Yi Qiang (JLab) Wenbiao Yan (USTC, China)
Contalbrigo Marco INFN Ferrara ECT* Workshop - Lattice QCD and Hadron Physics 15 th January 2014, Trento.
2/10/20161 What can we learn with Drell-Yan in p(d)-nucleus collisions Feng Yuan Lawrence Berkeley National Laboratory RBRC, Brookhaven National Laboratory.
Tensor and Flavor-singlet Axial Charges and Their Scale Dependencies Hanxin He China Institute of Atomic Energy.
Transverse Momentum Dependent Evolution in Proton-Proton Collisions Oleg Eyser RIKEN/BNL Research Center Workshop Emerging Spin and Transverse Momentum.
— Seminar, CERN, Dec. 15, 2005 — Opportunities in nucleon spin physics Xiangdong Ji University of Maryland.
Transverse Spin Physics with an Electron Ion Collider Oleg Eyser 4 th International Workshop on Transverse Polarisation Phenomena in Hard Processes Chia,
Zhongbo Kang Los Alamos National Laboratory Recent progress on TMD study and future perspective at the EIC Baryons 2016 Tallahassee, Florida May 16–20,
6/28/20161 Future Challenges of Spin Physics Feng Yuan Lawrence Berkeley National Laboratory.
Proton spin structure in phase-space May 17, FSU Alumni Center, Tallahassee, Florida, USA Cédric Lorcé CPhT Baryons May 2016 Florida State University.
Xiangdong Ji U. Maryland/ 上海交通大学 Recent progress in understanding the spin structure of the nucleon RIKEN, July 29, 2013 PHENIX Workshop on Physics Prospects.
A sideways look into the proton Transverse momentum and transverse spin in QCD Alessandro Bacchetta.
11/19/20161 Transverse Momentum Dependent Factorization Feng Yuan Lawrence Berkeley National Laboratory RBRC, Brookhaven National Laboratory.
Nucleon spin decomposition
Introduction to pQCD and TMD physics
Long-range plan of nuclear physics in Japan
Physics of the EIC Cyrille Marquet Theory Division - CERN.
Accessing the gluon Wigner distribution in ep and pA collisions
Measurements of quark transversity and orbital motion in hard scattering Yoshiyuki Miyachi Tokyo Institute of Technology.
3/19/20181 Nucleon Spin: Final Solution at the EIC Feng Yuan Lawrence Berkeley National Laboratory.
Semi-inclusive DIS at Small-x
Can We Learn Quark Orbital Motion from SSAs?
Transverse Momentum Dependent Parton Distributions
Unique Description for SSAs in DIS and Hadronic Collisions
Feng Yuan Lawrence Berkeley National Laboratory
Unique Description for Single Transverse Spin Asymmetries
Sangem Rajesh in collaboration with Asmita Mukherjee IIT Bombay, India
Presentation transcript:

3/8/20161 Nucleon Tomography --Parton Imaging in 3D Feng Yuan Lawrence Berkeley National Laboratory

Landscape of Atomic Matter 2 Rutherford Scattering, 1911 Discovery of nucleus DIS at SLAC, 1960s Discovery of quarks Quantum ChromoDynamics:

EIC Proposals in US 3 arXiv: , arXiv:

Feynman Parton: one-dimension Inclusive cross sections probe the momentum (longitudinal) distributions of partons inside nucleon 3/8/20164 Hadronic reactions DIS

Extension to transverse direction… Semi-inclusive measurements (in DIS or Drell-Yan processes)  Transverse momentum dependent (TMD) parton distributions Deeply Virtual Compton Scattering and Exclusive processes  Generalized parton distributions (GPD) 3/8/20165

Nucleon tomography 3/8/20166 Current Lattice Simulations EIC Focus

Parton’s orbital motion through the Wigner Distributions 7 Phase space distribution: Projection onto p (x) to get the momentum (probability) density Quark orbital angular momentum Well defined in QCD: Ji, Xiong, Yuan, PRL, 2012; PRD, 2013 Lorce, Pasquini, Xiong, Yuan, PRD, 2012

Outline 3D Imaging from the GPDs and TMDs measurements  Try to answer more detailed questions as Rutherford was doing 100 years ago QCD dynamics involved in these processes  In particular for the TMD part: universality, factorization, evolutions,… TMDs at small-x 3/8/20168

TMD Parton Distributions The definition contains explicitly the gauge links QCD factorization has been proved for the hard processes in terms of TMDs  Collins-Soper 1981, Ji-Ma-Yuan 2004, Collins /8/20169 Collins-Soper 1981, Collins 2002, Belitsky-Ji-Yuan 2002

Generalized Parton Distributions Off-diagonal matrix elements of the quark operator (along light-cone) It depends on quark momentum fraction x and skewness ξ, and nucleon momentum transfer t 3/8/ Mueller, et al. 1994; Ji, 1996, Radyushkin 1996

Transverse profile for the quark distribution: k t vs b t 3/8/ GPD fit to the DVCS data from HERA, Kumerick-D.Mueller, 09,10 Quark distribution calculated from a saturation-inspired model A.Mueller 99, McLerran-Venugopalan 99

Deformation when nucleon is transversely polarized 3/8/ Lattice Calculation of the IP density of Up quark, QCDSF/UKQCD Coll., 2006 Quark Sivers function fit to the SIDIS Data, Anselmino, et al kyky kxkx

DVCS kinematics 3/8/ Experiments measure the Compton Form Factors (CFF)

Extract the GPDs The theoretical framework has been well established  Perturbative QCD corrections at NLO, some at NNLO However, GPDs depend on x, ξ,t, it is much more difficult than PDFs (only depends on x)  There will be model dependence at the beginning 3/8/201614

3/8/ HERAHERMES CLAS Jlab-Hall-A

Future HERA (ep collider) is limited by the statistics, and is not polarized Existing fixed target experiments are limited by statistics and kinematics Jlab 12 is limited by kinematics, in particular, Q 2 Ultimate machine will be the EIC 3/8/201616

Transverse momentum dependent parton distribution Straightforward extension  Spin average, helicity, and transversity distributions P T -spin correlations  Nontrivial distributions, S T XP T  In quark model, depends on S- and P-wave interference 3/8/201617

18 Sivers Asymmetries in DIS and Drell-Yan Initial state vs. final state interactions “Universality”: QCD prediction HERMES/COM PASS ** ** Drell-Yan DIS

TMD predictions rely on Non-perturbative TMDs constrained from experiments QCD evolutions, in particular, respect to the hard momentum scale Q  Strong theory/phenomenological efforts in the last few years  Need more exp. data/lattice calculations 3/8/201619

Constraints from SIDIS with Evolution 3/8/ Sun, Yuan, PRD 2013

Predictions at RHIC Additional theory uncertainties: x-dependence of the TMDs comes from a fit to fixed target drell-yan and w/z production at Tevatron ---Nadolsky et al. 3/8/ √S = 500GeV Drell-Yan Q=6GeV Sun, Yuan, PRD 2013

3/8/ √S = 510GeV Rapidity of W Pt(GeV) y=0

23 QCD evolution reduces the asymmetries about a factor of 3 for W/Z

TMDs at small-x 3/8/ CSS P J >>K T KTKT Hard processes probe the kt-dependent gluon distributions directly Saturation phenomena manifest in the observables  Marquet, 2007  Dominguiz-Marquet- Xiao-Yuan, 2010

Non-linear term at high density Balitsky-Fadin-Lipatov-Kuraev, Balitsky-Kovchegov: Non-linear term, 98 3/8/201625

Therefore x-dependence of the TMDs at small-x, in principle, can be calculated from the QCD evolution (BK-JIMWLK) How about Q 2  It has been shown that the Sudakov double log resummation (which controls Q-evolution) can be performed consistently in the small-x formalism 3/8/ Mueller, Xiao, Yuan, PRL110, (2013); Phys.Rev. D88 (2013)

Two-particle correlations in central d+Au collisions at RHIC 27 Stasto,Xiao,Yuan,PLB716,430(2012) STAR and PHENIX: Broadening and Suppression two-hadron production in the back-to-back region in central d+Au collisions Theory: QCD factorization together with gluon saturation in nucleus describes well the experimental data PHENIX

Mapping the phase structure RHIC pA at LHC 3/8/ CSS 1GeV x~10 -3

3/8/ Constantin Loizides

Mapping the phase structure RHIC Forward pA at LHCb and RHIC 3/8/ CSS 1GeV x~10 -3

Computational access Lattice calculations of the parton distributions (as functions of x) become possible by a recent proposal 3/8/ Ji, PRL110 (2013)

TMDs on lattice Nontrivial soft factor subtraction is essential to achieve the factorization  All unwanted divergences cancelled out Calculable on lattice  shall be extended to small-x 3/8/201632

TMD factorization in quasi-pdfs For example, for Drell-Yan lepton pair production 3/8/ Lattice calculation Quasi-pdfs Soft factor

Summary There have been great progresses in our understanding of the nucleon tomography in terms of GPDs and TMDs  More expected in the future!!! First principle computation (lattice QCD) of nucleon tomography become possible in the future to confront the experimental data from Jlab 12 GeV upgrade and the planned EIC 3/8/201634