Updated measurements of exclusive $J/\psi$ and $\psi (2S)$ production cross-sections in $pp$ collisions at $\sqrt{s}=7$ TeV

Abstract

The differential cross-section as a function of rapidity has been measured for the exclusive production of $J/\psi$ and $\psi (2S)$ mesons in proton-proton collisions at $\sqrt{s}=7$ 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 $$\begin{array}{rl}{\sigma }_{pp\to J/\psi \to {\mu }^{+}{\mu }^{-}}(2.0<{\eta }_{{\mu }^{\pm }}<4.5)=& 291\pm 7\pm 19\mathrm{pb},\\ {\sigma }_{pp\to \psi (2S)\to {\mu }^{+}{\mu }^{-}}(2.0<{\eta }_{{\mu }^{\pm }}<4.5)=& 6.5\pm 0.9\pm 0.4\mathrm{pb},\end{array}$$ 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.

17 pages, 7 figures

References in corpus (8)

• Big-Bang Nucleosynthesis
• Observation of exclusive charmonium production and gamma+gamma to mu+mu- in p+pbar collisions at sqrt{s} = 1.96 TeV
• Exclusive $J/\psi$ and $\psi (2S)$ production in $pp$ collisions at $\sqrt{s}=7$ TeV
• Exclusive photoproduction of $J/\psi$ in proton-proton and proton-antiproton scattering
• Vector Meson Production in Coherent Hadronic Interactions: An update on predictions for RHIC and LHC
• Exclusive photoproduction at the Tevatron and LHC within the dipole picture
• Small x gluon from exclusive J/psi production
• Exclusive J/psi and Upsilon hadroproduction and the QCD odderon

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