The production of Υ(1S), Υ(2S) and Υ(3S) mesons decaying into the dimuon final state is studied with the LHCb detector using a data sample corresponding to an integrated luminosity of 3.3 pb^−1 collected in proton–proton collisions at a centre-of-mass energy of √s = 2.76 TeV. The differential production cross-sections times dimuon branching fractions are measured as functions of the Υ transverse momentum and rapidity, over the ranges p_T < 15 GeV/c and 2.0 < y < 4.5. The total cross-sections in this kinematic region, assuming unpolarised production, are measured to be σ(pp → Υ(1S) X) × B(Υ(1S) → μ+ μ−) = 1.111 ± 0.043 ± 0.044 nb, σ(pp → Υ(2S) X) × B(Υ(2S) → μ+ μ−) = 0.264 ± 0.023 ± 0.011 nb, σ(pp → Υ(3S) X) × B(Υ(3S) → μ+ μ−) = 0.159 ± 0.020 ± 0.007 nb, where the first uncertainty is statistical and the second systematic.

R. Aaij, B. Adeva, M. Adinolfi, A. Affolder, Z. Ajaltouni, J. Albrecht, et al. (2014). Measurement of Υ Production in pp Collisions at √s = 2.76 TeV. THE EUROPEAN PHYSICAL JOURNAL. C, PARTICLES AND FIELDS, 74(4), 1-11 [10.1140/epjc/s10052-014-2835-1].

Measurement of Υ Production in pp Collisions at √s = 2.76 TeV

CARBONE, ANGELO;GALLI, DOMENICO;PATRIGNANI, CLAUDIA;PERAZZINI, STEFANO;VAGNONI, VINCENZO MARIA;ZANGOLI, MARIA;
2014

Abstract

The production of Υ(1S), Υ(2S) and Υ(3S) mesons decaying into the dimuon final state is studied with the LHCb detector using a data sample corresponding to an integrated luminosity of 3.3 pb^−1 collected in proton–proton collisions at a centre-of-mass energy of √s = 2.76 TeV. The differential production cross-sections times dimuon branching fractions are measured as functions of the Υ transverse momentum and rapidity, over the ranges p_T < 15 GeV/c and 2.0 < y < 4.5. The total cross-sections in this kinematic region, assuming unpolarised production, are measured to be σ(pp → Υ(1S) X) × B(Υ(1S) → μ+ μ−) = 1.111 ± 0.043 ± 0.044 nb, σ(pp → Υ(2S) X) × B(Υ(2S) → μ+ μ−) = 0.264 ± 0.023 ± 0.011 nb, σ(pp → Υ(3S) X) × B(Υ(3S) → μ+ μ−) = 0.159 ± 0.020 ± 0.007 nb, where the first uncertainty is statistical and the second systematic.
2014
R. Aaij, B. Adeva, M. Adinolfi, A. Affolder, Z. Ajaltouni, J. Albrecht, et al. (2014). Measurement of Υ Production in pp Collisions at √s = 2.76 TeV. THE EUROPEAN PHYSICAL JOURNAL. C, PARTICLES AND FIELDS, 74(4), 1-11 [10.1140/epjc/s10052-014-2835-1].
R. Aaij; B. Adeva; M. Adinolfi; A. Affolder; Z. Ajaltouni; J. Albrecht; F. Alessio; M. Alexander; S. Ali; G. Alkhazov; P. Alvarez Cartelle; A. A. Alve...espandi
File in questo prodotto:
File Dimensione Formato  
2014-AR-15-Meas_of_Upsilon_Prod_in_pp_Coll_at_sqrt_s_2_76_TeV-EPJC.pdf

accesso aperto

Tipo: Versione (PDF) editoriale
Licenza: Licenza per Accesso Aperto. Creative Commons Attribuzione (CCBY)
Dimensione 621.95 kB
Formato Adobe PDF
621.95 kB Adobe PDF Visualizza/Apri

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/11585/278120
Citazioni
  • ???jsp.display-item.citation.pmc??? ND
  • Scopus 38
  • ???jsp.display-item.citation.isi??? 38
social impact