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 is sigma(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.

Aaij, R., Adeva, B., Adinolfi, M., Adrover, C., Affolder, A., Ajaltouni, Z., et al. (2012). Observation of J/psi-pair production in pp collisions at root s=7 TeV. PHYSICS LETTERS. SECTION B, 707(1), 52-59 [10.1016/j.physletb.2011.12.015].

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

CALVI, MARTA;FANCHINI, ERICA;PESSINA, GIANLUIGI EZIO;
2012

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 is sigma(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.
Articolo in rivista - Articolo scientifico
flavor physics; QCD; quarkonium; heavy quark production; particle and resonance production; experimental results
English
2012
707
1
52
59
none
Aaij, R., Adeva, B., Adinolfi, M., Adrover, C., Affolder, A., Ajaltouni, Z., et al. (2012). Observation of J/psi-pair production in pp collisions at root s=7 TeV. PHYSICS LETTERS. SECTION B, 707(1), 52-59 [10.1016/j.physletb.2011.12.015].
File in questo prodotto:
Non ci sono file associati a questo prodotto.

I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.

Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/10281/37416
Citazioni
  • Scopus 184
  • ???jsp.display-item.citation.isi??? 158
Social impact