Measurement of J/psi and psi(2S) Prompt Double-Differential Cross Sections in pp Collisions at root s=7 TeV

Title
Measurement of J/psi and psi(2S) Prompt Double-Differential Cross Sections in pp Collisions at root s=7 TeV
Author
김태정
Keywords
HEAVY QUARKONIUM
Issue Date
2015-05
Publisher
AMER PHYSICAL SOC
Citation
PHYSICAL REVIEW LETTERS, v. 114, NO 19, Page. 25-51
Abstract
The double-differential cross sections of promptly produced J/psi and psi(2S) mesons are measured in pp collisions at root s = 7 TeV, as a function of transverse momentum p(T) and absolute rapidity \y\. The analysis uses J/psi and psi(2S) dimuon samples collected by the CMS experiment, corresponding to integrated luminosities of 4.55 and 4.90 fb(-1), respectively. The results are based on a two-dimensional analysis of the dimuon invariant mass and decay length, and extend to p(T) = 120 and 100 GeV for the J/psi and psi(2S), respectively, when integrated over the interval \y\ ˂ 1.2. The ratio of the psi(2S) to J/psi cross sections is also reported for \y\ ˂ 1.2, over the range 10 ˂ p(T) ˂ 100 GeV. These are the highest p(T) values for which the cross sections and ratio have been measured.
URI
http://journals.aps.org/prl/abstract/10.1103/PhysRevLett.114.191802http://hdl.handle.net/20.500.11754/24649
ISSN
0031-9007; 1079-7114
DOI
10.1103/PhysRevLett.114.191802
Appears in Collections:
COLLEGE OF NATURAL SCIENCES[S](자연과학대학) > PHYSICS(물리학과) > Articles
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