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Longitudinal spin transfer to Lambda and Lambda hyperons in polarized proton-proton collisions at s=200 GeV

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成果类型:
期刊论文
作者:
Abelev, B. I.*;Aggarwal, M. M.;Ahammed, Z.;Alakhverdyants, A. V.;Anderson, B. D.;...
通讯作者:
Abelev, B. I.
作者机构:
[Iordanova, A.; Abelev, B. I.; Barannikova, O.; Hollis, R. S.; Kauder, K.; Garcia-Solis, E. J.; Hofman, D. J.; Betts, R. R.; Suarez, M. C.] Univ Illinois, Chicago, IL 60607 USA.
[Underwood, D. G.; Krueger, K.; Bridgeman, A.; Spinka, H. M.] Argonne Natl Lab, Argonne, IL 60439 USA.
[Jones, P. G.; Elhalhuli, E.; Burton, T. P.; Nelson, J. M.; Barnby, L. S.] Univ Birmingham, Birmingham, W Midlands, England.
[Ullrich, T.; Pile, P.; Lamont, M. A. C.; LeVine, M. J.; Ljubicic, T.; Hallman, T. J.; Xu, Z.; Ogawa, A.; Ruan, L.; Tang, A. H.; Videbaek, F.; Fine, V.; Fisyak, Y.; Beavis, D. R.; Lauret, J.; Bland, L. C.; Okada, H.; Longacre, R. S.; Sorensen, P.; Christie, W.; Arkhipkin, D.; Debbe, R. R.; Lebedev, A.; Dunlop, J. C.; Perevoztchikov, V.; Gordon, A.; Landgraf, J. M.; DePhillips, M.; Love, W. A.; Yip, K.; Didenko, L.; Guryn, W.; Ludlam, T.; Van Buren, G.; Fachini, P.; Lee, J. H.] Brookhaven Natl Lab, Upton, NY 11973 USA.
[Perkins, C.; Crawford, H. J.; Engelage, J.; Judd, E. G.; Ng, M. J.] Univ Calif Berkeley, Berkeley, CA 94720 USA.
通讯机构:
[Abelev, B. I.] U
Univ Illinois, Chicago, IL 60607 USA.
语种:
英文
期刊:
PHYSICAL REVIEW D
ISSN:
2470-0010
年:
2009
卷:
80
期:
11
基金类别:
Offices of NP and HEP; U. S. NSF; Sloan Foundation; DFG; CNRS [CNRS/IN2P3]; STFC; EPSRC of the United Kingdom; PESP CNPq of Brazil; Ministry of Education and Science of the Russian Federation; NNSFC; CAS; MoST; MoE of China, GA; MSMT of the Czech Republic; FOM; NOWof The Netherlands; DAE; DST; CSIR of India; Polish Ministry of Science and Higher Education; Korea Research Foundation; Ministry of Science, Education and Sports of the Republic Of Croatia; Russian Ministry of Science and Technology; RosAtom of Russia; Science and Technology Facilities Council [PP/F001061/1]
机构署名:
本校为其他机构
院系归属:
物理科学与技术学院
摘要:
The longitudinal spin transfer, D-LL, from high energy polarized protons to Lambda and Lambda hyperons has been measured for the first time in proton-proton collisions at s=200 GeV with the STAR detector at the Relativistic Heavy Ion Collider. The measurements cover pseudorapidity, eta, in the range |eta|< 1.2 and transverse momenta, p(T), up to 4 GeV/c. The longitudinal spin transfer is found to be D-LL=-0.03 +/- 0.13(stat)+/- 0.04(syst) for inclusive Lambda and D-LL=-0.12 +/- 0.08(stat)+/- 0.03(syst) for inclusive Lambda hyperons with =0.5 and >=3...

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