Measurement of fs / fu Variation with Proton-Proton Collision Energy and B -Meson Kinematics

  • Authors
  • Aaij R, Abellán Beteta C, Adeva B, Comerma A, Zonneveld JB, Zucchelli S
  • UPF authors
  • COMERMA MONTELLS, ALBERT;
  • Type
  • Scholarly articles
  • Journal títle
  • Physical Review Letters
  • Publication year
  • 2020
  • Volume
  • 124
  • Number
  • 12
  • Pages
  • 0-0
  • ISSN
  • 0031-9007
  • Publication State
  • Published
  • Abstract
  • The ratio of the Bs0 and B+ fragmentation fractions fs and fu is studied with Bs0¿J/¿¿ and B+¿J/¿K+ decays using data collected by the LHCb experiment in proton-proton collisions at 7, 8, and 13 TeV center-of-mass energies. The analysis is performed in bins of B-meson momentum, longitudinal momentum, transverse momentum, pseudorapidity, and rapidity. The fragmentation-fraction ratio fs/fu is observed to depend on the B-meson transverse momentum with a significance of 6.0¿. This dependency is driven by the 13 TeV sample (8.7¿), while the results for the other collision energies are not significant when considered separately. Furthermore, the results show a 4.8¿ evidence for an increase of fs/fu as a function of collision energy.
  • Complete citation
  • Aaij R, Abellán Beteta C, Adeva B, Comerma A, Zonneveld JB, Zucchelli S. Measurement of fs / fu Variation with Proton-Proton Collision Energy and B -Meson Kinematics. Physical Review Letters 2020; 124(12).
Bibliometric indicators
  • 11 times cited Scopus
  • 7 times cited WOS
  • Índex Scimago de 3.688(2020)