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Observation of J/ψ p√air production in pp collisions at √s = 7 TeV


LHCb Collaboration; Anderson, J; Bernet, R; Büchler-Germann, A; Bursche, A; Chiapolini, N; De Cian, M; Müller, K; Palacios, J; Serra, N; Steinkamp, O; Straumann, U; van Tilburg, J; Vollhardt, A (2012). Observation of J/ψ p√air production in pp collisions at √s = 7 TeV. Physics Letters B, 707(1):52-59.

Abstract

The production of $J/\psi$ pairs in proton-proton collisions at a centre-of-mass energy of 7 TeV has been observed using an integrated luminosity of $37.5 pb^{-1}$ collected with the LHCb detector. The production cross-section for pairs with both \jpsi in the rapidity range $2<y^{J/\psi}<4.5$ and transverse momentum $p_{T}^{J/\psi}<10 GeV/c$ is $$ \sigma^{J/\psi J/\psi} = 5.1\pm1.0\pm1.1 nb,$$ where the first uncertainty is statistical and the second systematic.

Abstract

The production of $J/\psi$ pairs in proton-proton collisions at a centre-of-mass energy of 7 TeV has been observed using an integrated luminosity of $37.5 pb^{-1}$ collected with the LHCb detector. The production cross-section for pairs with both \jpsi in the rapidity range $2<y^{J/\psi}<4.5$ and transverse momentum $p_{T}^{J/\psi}<10 GeV/c$ is $$ \sigma^{J/\psi J/\psi} = 5.1\pm1.0\pm1.1 nb,$$ where the first uncertainty is statistical and the second systematic.

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Additional indexing

Other titles:Observation of $J/ψ$ pair production in pp collisions at $\sqrt{s}=7 TeV$
Item Type:Journal Article, refereed, original work
Communities & Collections:07 Faculty of Science > Physics Institute
Dewey Decimal Classification:530 Physics
Language:English
Date:2012
Deposited On:14 Feb 2012 13:07
Last Modified:05 Apr 2016 15:34
Publisher:Elsevier
ISSN:0370-2693 (P) 1873-2445 (E)
Publisher DOI:https://doi.org/10.1016/j.physletb.2011.12.015
Related URLs:http://arxiv.org/abs/1109.0963

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