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	Measurement of prompt and nonprompt j/psi production in pp and ppb collisions at root s(nn)=5.02 tev
	Sirunyan, A. M.1; Tumasyan, A.1; Adam, W.2; Asilar, E.2; Bergauer, T.2; Brandstetter, J.2; Brondolin, E.2; Dragicevic, M.2; Eroe, J.2; Flechl, M.2
刊名	European physical journal c
	2017-04-27
卷号	77期号:4页码:27
ISSN号	1434-6044
DOI	10.1140/epjc/s10052-017-4828-3
通讯作者	Sirunyan, a. m.()
英文摘要	This paper reports the measurement of j/psi meson production in proton proton (pp) and proton lead (ppb) collisions at a center-of-mass energy per nucleon pair of 5.02 tev by the cms experiment at the lw. the data samples used in the analysis correspond to integrated luminosities of 28 ph(-1) and 35 nb(-1) for pp and ppb collisions, respectively. prompt and nonprompt j/psi mesons, the latter produced in the decay of b hadrons, are measured in their dilution decay channels, differential cross sections are measured in the transverse momentum range of 2 < p(t) < 30 gev/c, and center-of-mass rapidity ranges of vertical bar y(cm)vertical bar < 2.4 (pp) and -2.87 < y(cm) < 1.93 (ppb). the nuclear modification factor, r-ppb, is measured as a function of both p(t) and y(cm). small modifications to the j/psi cross sections are observed in ppb relative to pp collisions. the ratio of j/psi production cross sections in p-going and pb-going directions, r-fb, studied as functions of p(t) and y(cm), shows a significant decrease for increasing transverse energy deposited at large pseudorapidities. these results, which cover a wide kinematic range, provide new insight on the role of cold nuclear matter effects on prompt and nonprompt j/psi production.
WOS关键词	MONTE-CARLO ; SUPPRESSION ; PLUS
WOS研究方向	Physics
WOS类目	Physics, Particles & Fields
语种	英语
出版者	SPRINGER
WOS记录号	WOS:000400447200003
内容类型	期刊论文
URI标识	http://www.corc.org.cn/handle/1471x/2177438
专题	高能物理研究所
通讯作者	Sirunyan, A. M.
作者单位	1.Yerevan Phys Inst, Yerevan, Armenia 2.Inst Hochenergiephys, Vienna, Austria 3.Inst Nucl Problems, Minsk, Byelarus 4.Natl Ctr Particle & High Energy Phys, Minsk, Byelarus 5.Univ Antwerp, Antwerp, Belgium 6.Vrije Univ Brussel, Brussels, Belgium 7.Univ Libre Bruxelles, Brussels, Belgium 8.Univ Ghent, Ghent, Belgium 9.Catholic Univ Louvain, Louvain La Neuve, Belgium 10.Univ Mons, Mons, Belgium
推荐引用方式 GB/T 7714	Sirunyan, A. M.,Tumasyan, A.,Adam, W.,et al. Measurement of prompt and nonprompt j/psi production in pp and ppb collisions at root s(nn)=5.02 tev[J]. European physical journal c,2017,77(4):27.
APA	Sirunyan, A. M..,Tumasyan, A..,Adam, W..,Asilar, E..,Bergauer, T..,...&Hoorani, H. R..(2017).Measurement of prompt and nonprompt j/psi production in pp and ppb collisions at root s(nn)=5.02 tev.European physical journal c,77(4),27.
MLA	Sirunyan, A. M.,et al."Measurement of prompt and nonprompt j/psi production in pp and ppb collisions at root s(nn)=5.02 tev".European physical journal c 77.4(2017):27.

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