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Kinematic distributions and nuclear effects of J/psi production in 920 GeV fixed-target proton-nucleus collisions
HERA-B Collaboration
2009
发表期刊EUROPEAN PHYSICAL JOURNAL C
卷号60期号:4页码:525-542
通讯作者zur Nedden, M (reprint author), NIKHEF, NL-1009 DB Amsterdam, Netherlands.
摘要Measurements of the kinematic distributions of J/psi mesons produced in p-C, p-Ti and p-W collisions at root s = 41.6 GeV in the Feynman-x region -0.34 < x(F) < 0.14 and for transverse momentum up to p(T) = 5.4 GeV/c are presented. The xF and pT dependencies of the nuclear suppression parameter, a, are also given. The results are based on 2.4 x 10(5) J/psi mesons reconstructed in both the e(+) e(-) and mu(+) mu(-) decay channels. The data have been collected by the HERA-B experiment at the HERA proton ring of the DESY laboratory. The measurement explores the negative region of xF for the first time. The average value of a in the measured xF region is 0.981 +/- 0.015. The data suggest that the strong nuclear suppression of J/psi production previously observed at high xF turns into an enhancement at negative x(F)
关键词HERA-B EXPERIMENT PARTON DISTRIBUTIONS MUON DETECTOR ELECTROMAGNETIC CALORIMETER ENERGY-LOSS SYSTEM SCATTERING OPERATION PERFORMANCE TRACKER
学科领域Physics
DOI10.1140/epjc/s10052-009-0965-7
收录类别SCI
语种英语
WOS类目Physics, Particles & Fields
WOS记录号WOS:000265215100002
引用统计
被引频次:48[WOS]   [WOS记录]     [WOS相关记录]
文献类型期刊论文
条目标识符http://ir.ihep.ac.cn/handle/311005/212896
专题实验物理中心
作者单位中国科学院高能物理研究所
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HERA-B Collaboration. Kinematic distributions and nuclear effects of J/psi production in 920 GeV fixed-target proton-nucleus collisions[J]. EUROPEAN PHYSICAL JOURNAL C,2009,60(4):525-542.
APA HERA-B Collaboration.(2009).Kinematic distributions and nuclear effects of J/psi production in 920 GeV fixed-target proton-nucleus collisions.EUROPEAN PHYSICAL JOURNAL C,60(4),525-542.
MLA HERA-B Collaboration."Kinematic distributions and nuclear effects of J/psi production in 920 GeV fixed-target proton-nucleus collisions".EUROPEAN PHYSICAL JOURNAL C 60.4(2009):525-542.
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