Measurement of Upsilon production in collisions at root s=2.76 TeV

LHCb collaboration

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32 Citations (Web of Science)

Abstract

The production of , and mesons decaying into the dimuon final state is studied with the LHCb detector using a data sample corresponding to an integrated luminosity of collected in proton-proton collisions at a centre-of-mass energy of TeV. The differential production cross-sections times dimuon branching fractions are measured as functions of the transverse momentum and rapidity, over the ranges GeV/ and . The total cross-sections in this kinematic region, assuming unpolarised production, are measured to besigma (pp -> Upsilon(1S)X) x B(Upsilon(1S) -> mu(+)mu(-))= 1.111 +/- 0.043 +/- 0.044 nb,sigma (pp -> Upsilon(2S)X) x B(Upsilon(2S) -> mu(+)mu(-))= 0.264 +/- 0.023 +/- 0.011 nb,sigma (pp -> Upsilon(3S)X) x B(Upsilon(3S) -> mu(+)mu(-))s= 0.159 +/- 0.020 +/- 0.007 nb,where the first uncertainty is statistical and the second systematic.
Original languageEnglish
Article number2835
Number of pages11
JournalEuropean Physical Journal C
Volume74
Issue number4
DOIs
Publication statusPublished - 29 Apr 2014
Externally publishedYes

Keywords

  • PP COLLISIONS
  • J-PSI
  • HADRONIC PRODUCTION
  • DECAY
  • DETECTOR
  • TOOL

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