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Title: Measurement of J/ψ and ψ(2S) prompt double-differential cross sections in pp collisions at √s = 7 TeV

Abstract

The double-differential cross sections of promptly produced J/ψ and ψ(2S) mesons are measured in pp collisions at √s = 7 TeV, as a function of transverse momentum p T and absolute rapidity |y|. The analysis uses J/ψ and ψ(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/ψ and ψ(2S), respectively, when integrated over the interval |y| < 1.2. The ratio of the ψ(2S) to J/ψ 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.

Authors:
 [1]
  1. et al.
Publication Date:
Research Org.:
Fermi National Accelerator Lab. (FNAL), Batavia, IL (United States)
Sponsoring Org.:
USDOE Office of Science (SC), High Energy Physics (HEP) (SC-25)
Contributing Org.:
CMS Collaboration
OSTI Identifier:
1179755
Alternate Identifier(s):
OSTI ID: 1221261
Report Number(s):
FERMILAB-PUB-15-068-CMS; CERN-PH-EP-2015-022; CMS-BPH-14-001
Journal ID: ISSN 0031-9007; arXiv eprint number arXiv:1502.04155
Grant/Contract Number:  
AC02-07CH11359
Resource Type:
Journal Article: Published Article
Journal Name:
Physical Review Letters
Additional Journal Information:
Journal Volume: 114; Journal Issue: 19; Journal ID: ISSN 0031-9007
Publisher:
American Physical Society (APS)
Country of Publication:
United States
Language:
English

Citation Formats

Khachatryan, V. Measurement of J/ψ and ψ(2S) prompt double-differential cross sections in pp collisions at √s = 7 TeV. United States: N. p., 2015. Web. doi:10.1103/PhysRevLett.114.191802.
Khachatryan, V. Measurement of J/ψ and ψ(2S) prompt double-differential cross sections in pp collisions at √s = 7 TeV. United States. doi:10.1103/PhysRevLett.114.191802.
Khachatryan, V. Thu . "Measurement of J/ψ and ψ(2S) prompt double-differential cross sections in pp collisions at √s = 7 TeV". United States. doi:10.1103/PhysRevLett.114.191802.
@article{osti_1179755,
title = {Measurement of J/ψ and ψ(2S) prompt double-differential cross sections in pp collisions at √s = 7 TeV},
author = {Khachatryan, V.},
abstractNote = {The double-differential cross sections of promptly produced J/ψ and ψ(2S) mesons are measured in pp collisions at √s = 7 TeV, as a function of transverse momentum pT and absolute rapidity |y|. The analysis uses J/ψ and ψ(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 pT = 120 and 100 GeV for the J/ψ and ψ(2S), respectively, when integrated over the interval |y| < 1.2. The ratio of the ψ(2S) to J/ψ cross sections is also reported for |y| < 1.2, over the range 10 < pT < 100 GeV. These are the highest pT values for which the cross sections and ratio have been measured.},
doi = {10.1103/PhysRevLett.114.191802},
journal = {Physical Review Letters},
issn = {0031-9007},
number = 19,
volume = 114,
place = {United States},
year = {2015},
month = {5}
}

Journal Article:
Free Publicly Available Full Text
Publisher's Version of Record at 10.1103/PhysRevLett.114.191802

Citation Metrics:
Cited by: 12 works
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Figures / Tables:

FIG. 1 FIG. 1: (color online). Projections on the dimuon invariant mass (left) and pseudo-proper-decay-length (right) axes, for the J/ψ (top) and ψ(2S) (bottom) events in the kinematic bins given in the plots. The right panels show dimuons of invariant mass within ±3σCB of the pole masses. The curves, identified in themore » legends, represent the result of the fits described in the text. The vertical bars on the data points show the statistical uncertainties.« less

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    Figures/Tables have been extracted from DOE-funded journal article accepted manuscripts.