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Precision Measurement of the Longitudinal Double-Spin Asymmetry for Inclusive Jet Production in Polarized Proton Collisions at root s=200 GeV
- 1.0448888 - ÚJF 2016 RIV US eng J - Journal Article
Adamczyk, L. - Bielčík, J. - Bielčíková, Jana - Chaloupka, P. - Pachr, M. - Rusňák, Jan - Rusňáková, O. - Šumbera, Michal - Tlustý, David - Vértési, Robert … Total 360 authors
Precision Measurement of the Longitudinal Double-Spin Asymmetry for Inclusive Jet Production in Polarized Proton Collisions at root s=200 GeV.
Physical Review Letters. Roč. 115, č. 9 (2015), 092002. ISSN 0031-9007. E-ISSN 1079-7114
R&D Projects: GA ČR GA13-20841S
Institutional support: RVO:61389005
Keywords : STAR collaboration * patron distibutions * uncertainties
Subject RIV: BG - Nuclear, Atomic and Molecular Physics, Colliders
Impact factor: 7.645, year: 2015
We report a new measurement of the midrapidity inclusive jet longitudinal double-spin asymmetry, A(LL), in polarized pp collisions at center-of-mass energy root s = 200 GeV. The STAR data place stringent constraints on polarized parton distribution functions extracted at next-to-leading order from global analyses of inclusive deep-inelastic scattering (DIS), semi-inclusive DIS, and RHIC pp data. The measured asymmetries provide evidence at the 3 sigma level for positive gluon polarization in the Bjorken-x region x > 0.05.
Permanent Link: http://hdl.handle.net/11104/0250507
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