期刊
PHYSICAL REVIEW D
卷 86, 期 3, 页码 -出版社
AMER PHYSICAL SOC
DOI: 10.1103/PhysRevD.86.032006
关键词
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资金
- Offices of NP and HEP within the U.S. DOE Office of Science
- U.S. NSF
- BMBF of Germany
- CNRS/IN2P3, RA, RPL
- EMN of France
- EPSRC of the United Kingdom
- FAPESP of Brazil
- Russian Ministry of Education and Science
- Ministry of Education and the NNSFC of China
- IRP and GA of the Czech Republic
- FOM of the Netherlands
- DAE
- DST
- CSIR of the Government of India
- Swiss NSF
- Polish State Committee for Scientific Research
- SRDA of Slovakia
- Korea Science and Engineering Foundation
- Renaissance Technologies Corporation
- RCF
- NERSC Center
We report STAR measurements of the longitudinal double-spin asymmetry A(LL), the transverse singlespin asymmetry A(N), and the transverse double-spin asymmetries A(Sigma) and A(TT) for inclusive jet production at mid-rapidity in polarized p + p collisions at a center-of-mass energy of root s = 200 GeV. The data represent integrated luminosities of 7.6 pb(-1) with longitudinal polarization and 1.8 pb(-1) with transverse polarization, with 50%-55% beam polarization, and were recorded in 2005 and 2006. No evidence is found for the existence of statistically significant jet A(N), A(Sigma), or A(TT) at mid-rapidity. Recent model calculations indicate the A(N) results may provide new limits on the gluon Sivers distribution in the proton. The asymmetry A(LL) significantly improves the knowledge of gluon polarization in the nucleon.
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