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Measurement of the relative B±c/B± production cross section with the ATLAS detector at √s=8 TeV

ContributorsATLAS Collaboration
CollaboratorsAdorni Braccesi Chiassi, Sofiaorcid; Akilli, Ece; Amrouche, Cherifa Sabrina; Benoit, Mathieu; Clark, Allan Geoffrey; Della Volpe, Domenico; Di Bello, Francesco Armando; Dubreuil, Arnaud; Ferrere, Didier; Gadatsch, Stefan; Golling, Tobias; Gonzalez Sevilla, Sergio; Iacobucci, Giuseppe; Iizawa, Tomoya; Jansky, Roland; Khoo, Teng Jian; Kiehn, Moritz; Lanfermann, Marie Christine; Lionti, Anthony Eric; Mermod, Philippe; Nessi, Marzio; Nindhito, Herjuno Rah; Paolozzi, Lorenzo; Poggi, Riccardo; Raine, Johnny; Salamani, Dalila; Schramm, Steven; Sfyrla, Anna; Sultan, D M S; Valente, Marco; Vicente Barreto Pinto, Mateus; Wu, Xin; Zaffaroni, Ettore
Published inPhysical review. D, vol. 104, no. 1, 012010
Publication date2021
First online date2021-07-26
Abstract

The total cross section and differential cross sections for the production of Bc± mesons, times their branching fraction to J/ψπ±, are measured relative to those for the production of B± mesons, times their branching fraction to J/ψK±. The data used for this study correspond to an integrated luminosity of 20.3  fb-1 of pp collisions recorded by the ATLAS detector at the Large Hadron Collider in 2012 at a center-of-mass energy of s=8  TeV. The measurement is performed differentially in bins of transverse momentum pT for 13  GeV<pT(Bc±)<22  GeV and pT(Bc±)>22  GeV and in bins of rapidity y for |y|<0.75 and 0.75<|y|<2.3. The relative cross section times branching fraction for the full range pT>13  GeV and |y|<2.3 is (0.34±0.04stat -0.02+0.06sys±0.01lifetime)%. The differential measurements suggest that the production cross section of the Bc± decreases faster with pT than the production cross section of the B±, while no significant dependence on rapidity is observed.

Keywords
  • P p: scattering
  • P p: colliding beams
  • B/c+: hadronic decay
  • B/c-: hadronic decay
  • B+: hadronic decay
  • B-: hadronic decay
  • J/psi(3100)
  • Quantum chromodynamics: perturbation theory
  • Transverse momentum: momentum spectrum
  • Drell-Yan process
  • B/c: branching ratio
  • B+: branching ratio
  • B-: branching ratio
  • ATLAS
  • CERN LHC Coll
  • Initial state
  • Lifetime
  • Channel cross section: branching ratio: measured
  • Differential cross section
  • Transverse momentum dependence
  • Rapidity dependence
  • Experimental results
  • B/c+ --> J/psi(3100) pi+
  • B/c- --> J/psi(3100) pi-
  • B+ --> J/psi(3100) K+
  • B- --> J/psi(3100) K-
  • 8000 GeV-cms
  • S091.2
Affiliation entities
Citation (ISO format)
ATLAS Collaboration. Measurement of the relative B±c/B± production cross section with the ATLAS detector at √s=8 TeV. In: Physical review. D, 2021, vol. 104, n° 1, p. 012010. doi: 10.1103/physrevd.104.012010
Main files (1)
Article (Published version)
accessLevelPublic CC BY-4.0
Identifiers
Additional URL for this publicationhttps://link.aps.org/doi/10.1103/PhysRevD.104.012010
Journal ISSN2470-0010
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5downloads

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