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First exclusive reconstruction of the B+,B0,and B*s0 and precise measurement of their masses

Abstract: Using proton-proton collision data collected by the CMS experiment at V¯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*0s , is performed. The mass differences between the excited mesons and their corresponding ground states are measured to be m(B*+) ? (B+)= 45.277 +- 0.039 +- 0.027 MeV, m(B*0)?(B0)= 45.471 +- 0.056 +- 0.028 MeV, and m(B*0s) - m(B0 s)= 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.

Authorship: Hayrapetyan A., Makarenko V., Tumasyan A., Adam W., Andrejkovic J.W., Benato L., Bergauer T., Dragicevic M., Giordano C., Hussain P.S., Jeitler M., Krammer N., Li A., Liko D., Matthewman M., Mikulec I., Schieck J., Schöfbeck R., Schwarz D., Shooshtari M., Sonawane M., Waltenberger W., Wulz C.E., Janssen T., Kwon H., Ocampo Henao D., Van Laer T., Van Mechelen P., Bierkens J., Breugelmans N., D’Hondt J., Dansana S., De Moor A., Delc

Fuente: Physical Review Letters, 2026, 136, 031902

Publisher: American Physical Society

Year of publication: 2026

No. of pages: 20

Publication type: Article

DOI: 10.1103/njf9-4zfv

ISSN: 0031-9007,1079-7114

Publication Url: http://doi.org/10.1103/njf9-4zfv

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