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

Calvo Gómez, Míriam; Camboni, Alessandro; Vilasís Cardona, Xavier; LHCb Collaboration - CERN

Publication date

2012-01-16

URI http://hdl.handle.net/20.500.14342/3380

DOI

https://doi.org/10.1016/j.physletb.2011.12.015

Abstract

The production of J/ψpairs in proton–proton collisions at a centre-of-mass energy of 7 TeV has beenobserved using an integrated luminosity of 37.5 pb−1collected with the LHCb detector. The productioncross-section for pairs with both J/ψin the rapidity range 2<yJ/ψ<4.5 and transverse momentumpJ/ψT<10 GeV/cisσJ/ψJ/ψ=5.1±1.0±1.1nb,where the first uncertainty is statistical and the second systematic.

Document Type

Article

Published version

Language

English

Subject (CDU)

53 - Physics

Keywords

Gran col·lisionador d'hadrons (França i Suïssa)

Col·lisions (Física nuclear)

Partícules (Física nuclear)

Protons

Pages

8 p.

Publisher

Elsevier

Is part of

Physics Letters B, Vol. 707, No. 1 (Gener 2012)

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Rights

Except where otherwise noted, this item's license is described as http://creativecommons.org/licenses/by-nc-nd/4.0/