Leading and next-to-leading order gluon polarization in the nucleon and longitudinal double spin asymmetries from open charm muoproduction
The result's identifiers
Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216208%3A11320%2F13%3A10139250" target="_blank" >RIV/00216208:11320/13:10139250 - isvavai.cz</a>
Alternative codes found
RIV/68407700:21340/13:00204904 RIV/46747885:24220/13:#0002480
Result on the web
<a href="http://dx.doi.org/10.1103/PhysRevD.87.052018" target="_blank" >http://dx.doi.org/10.1103/PhysRevD.87.052018</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1103/PhysRevD.87.052018" target="_blank" >10.1103/PhysRevD.87.052018</a>
Alternative languages
Result language
angličtina
Original language name
Leading and next-to-leading order gluon polarization in the nucleon and longitudinal double spin asymmetries from open charm muoproduction
Original language description
The gluon polarization in the nucleon was measured using open charm production by scattering 160 GeV/c polarized muons off longitudinally polarized protons or deuterons. The data were taken by the COMPASS Collaboration between 2002 and 2007. A detailed account is given of the analysis method that includes the application of neural networks. Several decay channels of D-0 mesons are investigated. Longitudinal spin asymmetries of the D meson production cross sections are extracted in bins of D-0 transversemomentum and energy. At leading order QCD accuracy, the average gluon polarization is determined as Delta g/g (LO) = -0.06 +/- 0: 21(stat.) +/- 0. 08(syst.) at the scale mu(2) approximate to 13 (GeV/c)(2) and an average gluon momentum fraction x approximate to 0.11. The average gluon polarization is also obtained at next-to-leading order QCD accuracy as Delta g/g NLO = -0.13 +/- 0.15(stat.).+/- 0.15(syst.) at the scale mu(2) approximate to 13 (GeV/c)(2) and x approximate to 0.20. DOI:10
Czech name
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Czech description
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Classification
Type
J<sub>x</sub> - 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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Result continuities
Project
Result was created during the realization of more than one project. More information in the Projects tab.
Continuities
P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)<br>I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace
Others
Publication year
2013
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů
Data specific for result type
Name of the periodical
Physical Review D - Particles, Fields, Gravitation and Cosmology
ISSN
1550-7998
e-ISSN
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Volume of the periodical
87
Issue of the periodical within the volume
5
Country of publishing house
US - UNITED STATES
Number of pages
22
Pages from-to
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UT code for WoS article
000316674600002
EID of the result in the Scopus database
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