Observation of a new baryon state in the Ab0n+n- mass spectrum

  • Authors
  • Aaij R, Abellán C, Ackernley T, Comerma A, Zonneveld JB, Zuccheli S
  • UPF authors
  • COMERMA MONTELLS, ALBERT;
  • Type
  • Scholarly articles
  • Journal títle
  • Journal of High Energy Physics
  • Publication year
  • 2020
  • Volume
  • 2020
  • Number
  • 6
  • Pages
  • 0-0
  • ISSN
  • 1126-6708
  • Publication State
  • Published
  • Abstract
  • A new baryon state is observed in the Ab0n+n- mass spectrum with high significance using a data sample of pp collisions, collected with the LHCb detector at centre-of-mass energies s = 7, 8 and 13 TeV, corresponding to an integrated luminosity of 9 fb-1. The mass and natural width of the new state are measured to be (...), where the first uncertainty is statistical and the second systematic. The third uncertainty for the mass is due to imprecise knowledge of the Ab0 baryon mass. The new state is consistent with the first radial excitation of the Ab0 baryon, the Ab(2S)0 resonance. Updated measurements of the masses and the upper limits on the natural widths of the previously observed (...) states are also reported.
  • Complete citation
  • Aaij R, Abellán C, Ackernley T, Comerma A, Zonneveld JB, Zuccheli S. Observation of a new baryon state in the Ab0n+n- mass spectrum. Journal of High Energy Physics 2020; 2020(6).
Bibliometric indicators
  • 13 times cited Scopus
  • 9 times cited WOS