Observation of J/psi-pair production in pp collisions at root s=7 TeV

LHCb collaboration

Research output: Contribution to journalArticleAcademicpeer-review

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 J/psi in the rapidity range 2 < y(J/psi) < 4.5 and transverse momentum p(T)(J/psi) < 10 GeV/c issigma(J/psi J/psi) = 5.1 +/- 1.0 +/- 1.1 nb,where the first uncertainty is statistical and the second systematic. (C) 2011 CERN. Published by Elsevier B.V. All rights reserved.
Original languageEnglish
Pages (from-to)52-59
Number of pages8
JournalPhysics Letters B
Volume707
Issue number1
DOIs
Publication statusPublished - 16 Jan 2012
Externally publishedYes

Keywords

  • PSI-PSI-PRODUCTION
  • MESON PRODUCTION
  • UPSILON

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