Longitudinal and transverse spin asymmetries for inclusive jet production at mid-rapidity in polarized p+p collisions at root s=200 GeV
Contribuinte(s) |
UNIVERSIDADE DE SÃO PAULO |
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Data(s) |
01/11/2013
01/11/2013
2012
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Resumo |
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. Offices of NP and HEP within the U.S. DOE Office of Science Offices of NP and HEP within the U.S. DOE Office of Science U.S. NSF U.S. NSF BMBF of Germany BMBF of Germany CNRS/IN2P3, RA, RPL CNRS/IN2P3, RA, RPL EMN of France EMN of France EPSRC of the United Kingdom EPSRC of the United Kingdom FAPESP of Brazil FAPESP of Brazil Russian Ministry of Education and Science Russian Ministry of Education and Science Ministry of Education and the NNSFC of China Ministry of Education and the NNSFC of China IRP and GA of the Czech Republic IRP and GA of the Czech Republic FOM of the Netherlands FOM of the Netherlands DAE DAE DST DST CSIR of the Government of India CSIR of the Government of India Swiss NSF Swiss NSF Polish State Committee for Scientific Research Polish State Committee for Scientific Research SRDA of Slovakia SRDA of Slovakia Korea Science and Engineering Foundation Korea Science and Engineering Foundation Renaissance Technologies Corporation Renaissance Technologies Corporation RCF RCF NERSC Center NERSC Center |
Identificador |
PHYSICAL REVIEW D, COLLEGE PK, v. 86, n. 3, supl. 2, Part 3, pp. 1233-1236, AUG 9, 2012 1550-7998 http://www.producao.usp.br/handle/BDPI/37685 10.1103/PhysRevD.86.032006 |
Idioma(s) |
eng |
Publicador |
AMER PHYSICAL SOC COLLEGE PK |
Relação |
PHYSICAL REVIEW D |
Direitos |
openAccess Copyright AMER PHYSICAL SOC |
Palavras-Chave | #DEEP-INELASTIC-SCATTERING #DEPENDENT STRUCTURE-FUNCTION #STRUCTURE-FUNCTION G(1)(N) #P COLLISIONS #QCD ANALYSIS #NUCLEON #PROTON #STAR #PHOTOPRODUCTION #Q(2)-DEPENDENCE #ASTRONOMY & ASTROPHYSICS #PHYSICS, PARTICLES & FIELDS |
Tipo |
article original article publishedVersion |