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	Measurements of the upsilon(1s), upsilon(2s), and upsilon(3s) differential cross sections in pp collisions at root s=7 tev
	Khachatryan, V.1; Sirunyan, A. M.1; Tumasyan, A.1; Adam, W.2; Bergauer, T.2; Dragicevic, M.2; Eroe, J.2; Friedl, M.2; Fruehwirth, R.2,190; Ghete, V. M.2
刊名	Physics letters b
	2015-10-07
卷号	749页码:14-34
关键词	Cms Upsilon B-physics Cross section
ISSN号	0370-2693
DOI	10.1016/j.physletb.2015.07.037
通讯作者	Khachatryan, v.()
英文摘要	Differential cross sections as a function of transverse momentum p(t) are presented for the production of upsilon(ns) (n = 1, 2, 3) states decaying into a pair of muons. data corresponding to an integrated luminosity of 4.9 fb(-1) in pp collisions at root s = 7 tev were collected with the cms detector at the lhc. the analysis selects events with dimuon rapidity vertical bar y vertical bar < 1.2 and dimuon transverse momentum in the range 10 < p(t) < 100 gev. the measurements show a transition from an exponential to a power-law behavior at p(t) approximate to 20 gev for the three upsilon states. above that transition, the upsilon(3s) spectrum is significantly harder than that of the upsilon(1s). the ratios of the upsilon(3s) and upsilon(2s) differential cross sections to the upsilon(1s) cross section show a rise as p(t)-increases at low p(t), then become flatter at higher p(t). (c) 2015 cern for the benefit of the cms collaboration. published by elsevier b.v.
WOS关键词	OCTET QUARKONIA PRODUCTION ; QED RADIATIVE-CORRECTIONS ; UNIVERSAL MONTE-CARLO ; PHOTOS
WOS研究方向	Astronomy & Astrophysics ; Physics
WOS类目	Astronomy & Astrophysics ; Physics, Nuclear ; Physics, Particles & Fields
语种	英语
出版者	ELSEVIER SCIENCE BV
WOS记录号	WOS:000361562900003
内容类型	期刊论文
URI标识	http://www.corc.org.cn/handle/1471x/2176467
专题	高能物理研究所
通讯作者	Khachatryan, V.
作者单位	1.Yerevan Phys Inst, Yerevan 375036, Armenia 2.Inst Hochenergiephys OeAW, Vienna, Austria 3.Natl Ctr Particle & High Energy Phys, Minsk, Byelarus 4.Univ Antwerp, B-2020 Antwerp, Belgium 5.Vrije Univ Brussel, Brussels, Belgium 6.Univ Libre Bruxelles, Brussels, Belgium 7.Univ Ghent, B-9000 Ghent, Belgium 8.Catholic Univ Louvain, Louvain, Belgium 9.Univ Mons, B-7000 Mons, Belgium 10.Ctr Brasileiro Pesquisas Fis, Rio De Janeiro, Brazil
推荐引用方式 GB/T 7714	Khachatryan, V.,Sirunyan, A. M.,Tumasyan, A.,et al. Measurements of the upsilon(1s), upsilon(2s), and upsilon(3s) differential cross sections in pp collisions at root s=7 tev[J]. Physics letters b,2015,749:14-34.
APA	Khachatryan, V..,Sirunyan, A. M..,Tumasyan, A..,Adam, W..,Bergauer, T..,...&Lanev, A..(2015).Measurements of the upsilon(1s), upsilon(2s), and upsilon(3s) differential cross sections in pp collisions at root s=7 tev.Physics letters b,749,14-34.
MLA	Khachatryan, V.,et al."Measurements of the upsilon(1s), upsilon(2s), and upsilon(3s) differential cross sections in pp collisions at root s=7 tev".Physics letters b 749(2015):14-34.

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