Title
Observation of exclusive charmonium production and <tex>$\gamma\gamma\rightarrow\mu^{+}\mu^{-}$</tex> in <tex>$p\overline{p}$</tex> collisions at <tex>$\sqrt{s}$</tex>=1.96 TeVObservation of exclusive charmonium production and <tex>$\gamma\gamma\rightarrow\mu^{+}\mu^{-}$</tex> in <tex>$p\overline{p}$</tex> collisions at <tex>$\sqrt{s}$</tex>=1.96 TeV
Author
Faculty/Department
Faculty of Sciences. Physics
Research group
Elementary Particle Physics
Publication type
article
Publication
New York, N.Y.,
Subject
Physics
Source (journal)
Physical review letters. - New York, N.Y.
Volume/pages
102(2009):24, p. 242001,1-242001,7
ISSN
0031-9007
ISI
000267197900016
Carrier
E
Target language
English (eng)
Full text (Publishers DOI)
Affiliation
University of Antwerp
Abstract
In CDF we have observed the reactions p+p&#773; →p+X+p&#773; , with X being a centrally produced J/ψ, ψ(2S), or χc0, and γγ→μ+μ- in pp&#773; collisions at √s=1.96  TeV. The event signature requires two oppositely charged central muons, and either no other particles or one additional photon detected. Exclusive vector meson production is as expected for elastic photoproduction, γ+p→J/ψ(ψ(2S))+p, observed here for the first time in hadron-hadron collisions. We also observe exclusive χc0→J/ψ+γ. The cross sections dσ/dy|y=0 for J/ψ, ψ(2S), and χc0 are 3.92±0.25(stat)±0.52(syst)  nb, 0.53±0.09(stat)±0.10(syst)  nb, and 76±10(stat)±10(syst)  nb, respectively, and the continuum is consistent with QED. We put an upper limit on the cross section for Odderon exchange in exclusive J/ψ production.
Full text (open access)
https://repository.uantwerpen.be/docman/irua/7307fb/4aa5516e.pdf
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