Recent results on cold-QCD from RHIC

Recent results on cold-QCD from RHIC

Polarized proton-proton collisions at the Relativistic Heavy Ion Collider (RHIC) provide unique opportunities to study the spin structure of the nucleon. We will highlight recent results on the nucleon spin structure from the STAR and PHENIX experiments at RHIC: (1) A sizable gluon polarization in t...

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Main Author: Xu Qinghua
Format: Article
Language:English
Published: EDP Sciences 2020-01-01
Series:EPJ Web of Conferences
Online Access:https://www.epj-conferences.org/articles/epjconf/pdf/2020/11/epjconf_ismd2019_03002.pdf
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spelling doaj-4f74f693c60e49719fd39bca19a038542021-08-02T17:07:49ZengEDP SciencesEPJ Web of Conferences2100-014X2020-01-012350300210.1051/epjconf/202023503002epjconf_ismd2019_03002Recent results on cold-QCD from RHICXu Qinghua0Institute of Frontier and Interdisciplinary Science & Key Laboratory of Particle Physics and Particle Irradiation of Minstry of Education, Shandong UniversityPolarized proton-proton collisions at the Relativistic Heavy Ion Collider (RHIC) provide unique opportunities to study the spin structure of the nucleon. We will highlight recent results on the nucleon spin structure from the STAR and PHENIX experiments at RHIC: (1) A sizable gluon polarization in the proton is measured with longitudinal double spin asymmetries of jet and hadron production; (2) Longitudinal single spin asymmetries in W boson production improve constraints on the sea quark polarization. The new spin asymmetry results for W boson confirmed the SU(2) flavor asymmetry of the light sea quark polarization in the proton; (3) Transverse spin effects in hadronic systems offer new implications on parton distribution functions in the collinear and transverse momentum dependent frameworks. We will also discuss near term plans for the STAR forward detector upgrade and prospects for proton-proton and protonion collisions in the years beyond 2021 at STAR.https://www.epj-conferences.org/articles/epjconf/pdf/2020/11/epjconf_ismd2019_03002.pdf
collection DOAJ
language English
format Article
sources DOAJ
author Xu Qinghua
spellingShingle Xu Qinghua
Recent results on cold-QCD from RHIC
EPJ Web of Conferences
author_facet Xu Qinghua
author_sort Xu Qinghua
title Recent results on cold-QCD from RHIC
title_short Recent results on cold-QCD from RHIC
title_full Recent results on cold-QCD from RHIC
title_fullStr Recent results on cold-QCD from RHIC
title_full_unstemmed Recent results on cold-QCD from RHIC
title_sort recent results on cold-qcd from rhic
publisher EDP Sciences
series EPJ Web of Conferences
issn 2100-014X
publishDate 2020-01-01
description Polarized proton-proton collisions at the Relativistic Heavy Ion Collider (RHIC) provide unique opportunities to study the spin structure of the nucleon. We will highlight recent results on the nucleon spin structure from the STAR and PHENIX experiments at RHIC: (1) A sizable gluon polarization in the proton is measured with longitudinal double spin asymmetries of jet and hadron production; (2) Longitudinal single spin asymmetries in W boson production improve constraints on the sea quark polarization. The new spin asymmetry results for W boson confirmed the SU(2) flavor asymmetry of the light sea quark polarization in the proton; (3) Transverse spin effects in hadronic systems offer new implications on parton distribution functions in the collinear and transverse momentum dependent frameworks. We will also discuss near term plans for the STAR forward detector upgrade and prospects for proton-proton and protonion collisions in the years beyond 2021 at STAR.
url https://www.epj-conferences.org/articles/epjconf/pdf/2020/11/epjconf_ismd2019_03002.pdf
work_keys_str_mv AT xuqinghua recentresultsoncoldqcdfromrhic
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