Contribution to a conference proceedings/Internal Report

PUBDB-2015-05545

http://join2-wiki.gsi.de/foswiki/pub/Main/Artwork/join2_logo100x88.png Constraining Transversity and Nucleon Transverse-polarization Structure Through Polarized-proton Collisions at STAR

Drachenberg, J. L. ; STAR Collaboration (Collaboration Author)

2014
Deutsches Elektronen-Synchrotron, DESY Hamburg

This record in other databases:  

Please use a persistent id in citations: doi:10.3204/DESY-PROC-2014-04/78

Report No.: DESY-PROC-2014-04

Abstract: Studies of jet and di-hadron production from polarized-proton collisions can expand current knowledge of nucleon transverse-polarization structure. In data collected in 2006 at $\sqrt{s}=200$ GeV, STAR observes for the first time in $p^{\uparrow}+p$ nonzero asymmetries from transversity coupled to Collins and di-hadron fragmentation functions. Measurements at $500$ GeV allow sensitivity to different mixes of partonic subprocesses; and comparisons of all measurements at $200$ and $500$ GeV may enlighten theoretical questions concerning evolution, universality, and factorization-breaking in non-collinear formulations of pQCD. Results from analyses of STAR data collected in 2011 at $\sqrt{s}=500$ GeV are presented, including first-ever measurements offering constraints on models involving gluon linear polarization.

Keyword(s): transversity ; polarization: linear ; gluon ; structure ; p ; nucleon ; STAR ; Brookhaven RHIC Coll ; hadron hadron ; jet ; fragmentation function ; universality ; sensitivity ; asymmetry ; factorization ; Collins ; Brookhaven Lab ; 500 GeV

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Contributing Institute(s):

1. LHC/ATLAS Experiment (ATLAS)
2. LHC/CMS Experiment (CMS)
3. Uni Hamburg / Experimentalphysik (UNI/EXP)

Research Program(s):

1. 611 - Fundamental Particles and Forces (POF3-611) (POF3-611)

Experiment(s):

1. No specific instrument

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Database coverage:

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Linked articles:

http://join2-wiki.gsi.de/foswiki/pub/Main/Artwork/join2_logo100x88.png Book/Proceedings/Internal Report Schmidt, A. (Editor)>Extern* ; Sander, C. (Editor)DESY*
Proceedings, 20th International Conference on Particles and Nuclei (PANIC 14)
2014Panic2014, Panic2014, HamburgHamburg, Germany, 25 Aug 2014 - 29 Aug 20142014-08-252014-08-29 Hamburg : Deutsches Elektronen-Synchrotron, DESY 1-754 (2014) [10.3204/DESY-PROC-2014-04]2014     Files  Fulltext BibTeX | EndNote: XML, Text | RIS

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