Updated measurements of exclusive J /ψ and ψ(2S) production cross-sections in pp collisions at √s=7 TeV
Name
Aaij_2014_J._Phys._G _Nucl._Part._Phys._41_055002.pdf
Description
Published version
Size
754.57 KB
Format
Unknown
Checksum (MD5)
6c5e8770cd32b8ff7150915caa13eae1
Author(s)
Ilten, Philip J
Williams, Michael
Date Issued
2014
Journal
Journal of Physics G: Nuclear and Particle Physics
Publisher
IOP Publishing
Citation
Aaij, R., et al. "Updated Measurements of Exclusive J/ and (2s) Production Cross-Sections in Pp Collisions at S = 7 Tev." Journal of Physics G: Nuclear and Particle Physics 41 5 (2014): 055002 (20 pp.).
Version
Final published version
Abstract
The differential cross-section as a function of rapidity has been measured for the exclusive production of J/ψ and ψ(2S) mesons in proton-proton collisions at TeV, using data collected by the LHCb experiment, corresponding to an integrated luminosity of 930 pb-1. The cross-sections times branching fractions to two muons having pseudorapidities between 2.0 and 4.5 are measured to be σpp→J/ψ→μ+ μ? (2.0 < ημ± < 4.5) = 291 ± 7 ± 19 pb, σpp→ψ(2S)→μ+ μ? (2.0 < ημ± < 4.5) = 6.5 ± 0.9 ± 0.4 pb, where the first uncertainty is statistical and the second is systematic. The measurements agree with next-to-leading order QCD predictions as well as with models that include saturation effects. © 2014 IOP Publishing Ltd.
MIT Department
Massachusetts Institute of Technology. Department of Physics
Massachusetts Institute of Technology. Laboratory for Nuclear Science
Terms of Use
Creative Commons Attribution 3.0 unported license
Persistent DSpace Link
DOI of Published Version
https://doi.org/10.1088/0954-3899/41/5/055002
