First Exclusive Reconstruction of the B*<SUP>+</SUP>, B*<SUP>0</SUP>, and B<sub>s</sub><SUP>*0</SUP> Mesons and Precise Measurement of Their Masses


Hayrapetyan A., Makarenko V., Tumasyan A., Adam W., Andrejkovic J., Benato L., ...More

PHYSICAL REVIEW LETTERS, vol.136, no.3, 2026 (SCI-Expanded, Scopus) identifier identifier identifier identifier

  • Publication Type: Article / Article
  • Volume: 136 Issue: 3
  • Publication Date: 2026
  • Doi Number: 10.1103/njf9-4zfv
  • Journal Name: PHYSICAL REVIEW LETTERS
  • Journal Indexes: Science Citation Index Expanded (SCI-EXPANDED), Scopus, Chemical Abstracts Core, Compendex, INSPEC, MathSciNet, zbMATH, DIALNET, Nature Index
  • Istanbul University Affiliated: Yes

Abstract

Using proton-proton collision data collected by the CMS experiment at root s = 13 TeV in 2016-2018, corresponding to an integrated luminosity of 140 fb(-1), the first full reconstruction of the three vector B meson states, B*(+), B-*0, and B-s(*0), is performed. The mass differences between the excited mesons and their corresponding ground states are measured to be m(B*(+)) - m(B+) 45.277 +/- 0.039 +/- 0.027 MeV, m(B*(0))- m(B-0) = 45.471 +/- 0.056 +/- 0.028 MeV, and m(B-s(0)) - m(B-s(0)) = 49.407 +/- 0.132 +/- 0.041 MeV, where the first uncertainties are statistical and the second are systematic. These results improve on the precision of previous measurements by an order of magnitude.