The Polarized Gluon Contribution to the Proton Spin from the Double Helicity Asymmetry in Inclusive pi0 Production in Polarized p + p Collisions at s**(1/2) = 200-GeV

Result code in IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68407700%3A21340%2F09%3A00158868" target="_blank" >RIV/68407700:21340/09:00158868 - isvavai.cz</a>

Result on the web

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DOI - Digital Object Identifier

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Result language

angličtina

Original language name

The Polarized Gluon Contribution to the Proton Spin from the Double Helicity Asymmetry in Inclusive pi0 Production in Polarized p + p Collisions at s**(1/2) = 200-GeV

Original language description

The double helicity asymmetry in neutral pion production for pT =1 to 12 GeV/c has been measured with the PHENIX experiment. Measured asymmetries are consistent with zero, and at a theory scale of ?2 = 4 GeV2 give Delta G[0.02,0.3] = 0.1 to 0.2, with a constraint of -0.7 < Delta G[0.02,0.3] < 0.5 at delta chi^2 = 9 (~3 sigma) for our sampled gluon momentum fraction (x) range, 0.02 to 0.3.

Czech name

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Czech description

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Type

J_x - Unclassified - Peer-reviewed scientific article (Jimp, Jsc and Jost)

CEP classification

BF - Elementary particle theory and high energy physics

OECD FORD branch

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Project

<a href="/en/project/LA08015" target="_blank" >LA08015: Collaboration of the Czech Republic with CERN</a><br>

Continuities

P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)

Publication year

2009

Confidentiality

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Name of the periodical

Physical Review Letters

ISSN

0031-9007

e-ISSN

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Volume of the periodical

103

Issue of the periodical within the volume

1

Country of publishing house

US - UNITED STATES

Number of pages

6

Pages from-to

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UT code for WoS article

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EID of the result in the Scopus database

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