First Exclusive Reconstruction of the 𝐵*+, 𝐵*0, and 𝐵*0_𝑠 Mesons and Precise Measurement of Their Masses

Авторы: Boos E., Bunichev V., Dubinin M., Dudko L., Ershov A.A., Gribushin A., Klyukhin V., Kodolova O., Petrushanko S., Savrin V., Snigirev A., CMS Collaboration
Журнал: Physical Review Letters
Том: 136
Номер: 3
Год издания: 2026
Издательство: American Physical Society
Местоположение издательства: United States
Первая страница: 031902
DOI: 10.1103/njf9-4zfv
Аннотация: Using proton-proton collision data collected by the CMS experiment at √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*0_s , 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(B0) = 45.471 +- 0.056 +- 0.028 MeV, and m(B*0_s) − 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.
Добавил в систему: Клюхин Вячеслав Иванович

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