Proton spin structure at small-x

Boussarie, Renaud; Hatta, Yoshitaka; Yuan, Feng

doi:10.1016/j.physletb.2019.134817

Title: Proton spin structure at small-x

Journal Article · Tue Oct 01 00:00:00 EDT 2019 · Physics Letters. B

DOI:https://doi.org/10.1016/j.physletb.2019.134817· OSTI ID:1545918

Boussarie, Renaud; Hatta, Yoshitaka; Yuan, Feng

We generalize the Bartels-Ermolaev-Ryskin approach for the g₁ structure function at small-x to determine the small-x asymptotic behavior of the orbital angular momentum distributions in QCD. We present an exact analytical solution of the evolution equation in the double logarithmic approximation and discuss its implications for the proton spin problem.

View Journal Article

Cite

Export

Save

Research Organization:: Lawrence Berkeley National Laboratory (LBNL), Berkeley, CA (United States)

Sponsoring Organization:: USDOE Office of Science (SC), Nuclear Physics (NP)

Grant/Contract Number:: AC02-05CH11231; SC0012704

OSTI ID:: 1545918

Alternate ID(s):: OSTI ID: 1559247

Journal Information:: Physics Letters. B, Journal Name: Physics Letters. B Vol. 797 Journal Issue: C; ISSN 0370-2693

Publisher:: ElsevierCopyright Statement

Country of Publication:: Netherlands

Language:: English

Citation Metrics:

Cited by: 21 works

Citation information provided by
Web of Science

References (27)

The three-loop splitting functions in QCD: The helicity-dependent case Moch, S.; Vermaseren, J. A. M.; Vogt, A. Nuclear Physics B, Vol. 889 https://doi.org/10.1016/j.nuclphysb.2014.10.016	journal	December 2014
Hunting the Gluon Orbital Angular Momentum at the Electron-Ion Collider Ji, Xiangdong; Yuan, Feng; Zhao, Yong Physical Review Letters, Vol. 118, Issue 19 https://doi.org/10.1103/PhysRevLett.118.192004	journal	May 2017
Evidence for Polarization of Gluons in the Proton de Florian, Daniel; Sassot, Rodolfo; Stratmann, Marco Physical Review Letters, Vol. 113, Issue 1 https://doi.org/10.1103/PhysRevLett.113.012001	journal	July 2014
Scale dependence and small-χ behaviour of polarized parton distributions Ball, Richard D.; Forte, Stefano; Ridolfi, Giovanni Nuclear Physics B, Vol. 444, Issue 1-2 https://doi.org/10.1016/0550-3213(95)00178-U	journal	June 1995
Flavor singlet contribution to the structure functiong 1 at small-x Bartels, J.; Ermolaev, B. I.; Ryskin, M. G. Zeitschrift für Physik C: Particles and Fields, Vol. 72, Issue 4 https://doi.org/10.1007/s002880050285	journal	December 1996
Double logarithmic asymptotics and regge singularities of quark amplitudes with flavour exchange Kirschner, R.; Lipatov, L. N. Nuclear Physics B, Vol. 213, Issue 1 https://doi.org/10.1016/0550-3213(83)90178-5	journal	March 1983
Small- $x$ Asymptotics of the Quark Helicity Distribution Kovchegov, Yuri V.; Pitonyak, Daniel; Sievert, Matthew D. Physical Review Letters, Vol. 118, Issue 5 https://doi.org/10.1103/PhysRevLett.118.052001	journal	January 2017
Wigner distributions for gluons More, Jai; Mukherjee, Asmita; Nair, Sreeraj The European Physical Journal C, Vol. 78, Issue 5 https://doi.org/10.1140/epjc/s10052-018-5858-1	journal	May 2018
On the small-x behavior of the orbital angular momentum distributions in QCD Hatta, Yoshitaka; Yang, Dong-Jing Physics Letters B, Vol. 781 https://doi.org/10.1016/j.physletb.2018.03.081	journal	June 2018
The singlet contribution to the structure function g1(x,Q2) at small x Blümlein, J.; Vogt, A. Physics Letters B, Vol. 386, Issue 1-4 https://doi.org/10.1016/0370-2693(96)00958-6	journal	October 1996
Evolution equations for higher moments of angular momentum distributions Hägler, P.; Schäfer, A. Physics Letters B, Vol. 430, Issue 1-2 https://doi.org/10.1016/S0370-2693(98)00414-6	journal	June 1998
Running coupling effects for the singlet structure function g1 at small x Ermolaev, B. I.; Greco, M.; Troyan, S. I. Physics Letters B, Vol. 579, Issue 3-4 https://doi.org/10.1016/j.physletb.2003.11.016	journal	January 2004
Proton Spin Structure from Measurable Parton Distributions Ji, Xiangdong; Xiong, Xiaonu; Yuan, Feng Physical Review Letters, Vol. 109, Issue 15 https://doi.org/10.1103/PhysRevLett.109.152005	journal	October 2012
Spin-dependent deep inelastic electron scattering in an asymptotically free gauge theory Ahmed, M. A.; Ross, G. G. Physics Letters B, Vol. 56, Issue 4 https://doi.org/10.1016/0370-2693(75)90326-3	journal	May 1975
Double-logarithmic asymptotics of quark scattering amplitudes with flavor exchange Kirschner, R.; Lipatov, L. N. Physical Review D, Vol. 26, Issue 5 https://doi.org/10.1103/PhysRevD.26.1202	journal	September 1982
Small- x asymptotics of the quark helicity distribution: Analytic results Kovchegov, Yuri V.; Pitonyak, Daniel; Sievert, Matthew D. Physics Letters B, Vol. 772 https://doi.org/10.1016/j.physletb.2017.06.032	journal	September 2017
Generalized TMDs and the exclusive double Drell–Yan process Bhattacharya, Shohini; Metz, Andreas; Zhou, Jian Physics Letters B, Vol. 771 https://doi.org/10.1016/j.physletb.2017.05.081	journal	August 2017
Quark orbital angular momentum from Wigner distributions and light-cone wave functions Lorcé, Cédric; Pasquini, Barbara; Xiong, Xiaonu Physical Review D, Vol. 85, Issue 11 https://doi.org/10.1103/PhysRevD.85.114006	journal	June 2012
The g1 problem: Deep inelastic electron scattering and the spin of the proton Jaffe, R. L.; Manohar, Aneesh Nuclear Physics B, Vol. 337, Issue 3 https://doi.org/10.1016/0550-3213(90)90506-9	journal	June 1990
Electron-Ion Collider: The next QCD frontier: Understanding the glue that binds us all Accardi, A.; Albacete, J. L.; Anselmino, M. The European Physical Journal A, Vol. 52, Issue 9 https://doi.org/10.1140/epja/i2016-16268-9	journal	September 2016
A first unbiased global determination of polarized PDFs and their uncertainties Nocera, Emanuele R.; Ball, Richard D.; Forte, Stefano Nuclear Physics B, Vol. 887 https://doi.org/10.1016/j.nuclphysb.2014.08.008	journal	October 2014
Probing parton orbital angular momentum in longitudinally polarized nucleon Ji, Xiangdong; Xiong, Xiaonu; Yuan, Feng Physical Review D, Vol. 88, Issue 1 https://doi.org/10.1103/PhysRevD.88.014041	journal	July 2013
Small-X behaviour of the non-singlet structure function Ermolaev, B. I.; Manayenkov, S. I.; Ryskin, M. G. Zeitschrift für Physik C: Particles and Fields, Vol. 69, Issue 1 https://doi.org/10.1007/BF02907406	journal	December 1995
Helicity evolution at small $x$ : Flavor singlet and nonsinglet observables Kovchegov, Yuri V.; Pitonyak, Daniel; Sievert, Matthew D. Physical Review D, Vol. 95, Issue 1 https://doi.org/10.1103/PhysRevD.95.014033	journal	January 2017
Implications of color gauge symmetry for nucleon spin structure Hoodbhoy, Pervez; Ji, Xiangdong; Lu, Wei Physical Review D, Vol. 59, Issue 7 https://doi.org/10.1103/PhysRevD.59.074010	journal	February 1999
Notes on the orbital angular momentum of quarks in the nucleon Hatta, Yoshitaka Physics Letters B, Vol. 708, Issue 1-2 https://doi.org/10.1016/j.physletb.2012.01.024	journal	February 2012
Small x behaviour of the chirally-odd parton distribution h 1 ( x , Q 2 ) Kirschner, R.; Mankiewicz, L.; Schäfer, A. Zeitschrift f�r Physik C Particles and Fields, Vol. 74, Issue 3 https://doi.org/10.1007/s002880050412	journal	May 1997

Similar Records

Quark and gluon helicity evolution at small x: revised and updated

Journal Article · Fri Jul 15 00:00:00 EDT 2022 · Journal of High Energy Physics (Online) · OSTI ID:1545918

Cougoulic, Florian; Kovchegov, Yuri V.; Tarasov, Andrey; +1 more

Analytic solution for the revised helicity evolution at small

x

and large

N_{c}

: New resummed gluon-gluon polarized anomalous dimension and intercept

Journal Article · Thu Jul 06 00:00:00 EDT 2023 · Physical Review. D. · OSTI ID:1545918

Borden, Jeremy; Kovchegov, Yuri V.

Helicity evolution at small x

Journal Article · Wed Jan 13 00:00:00 EST 2016 · Journal of High Energy Physics (Online) · OSTI ID:1545918

Kovchegov, Yuri V.; Pitonyak, Daniel; Sievert, Matthew D.

Related Subjects

72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS

Title: Proton spin structure at small-x

Citation Formats

References (27)

Similar Records

Related Subjects