We report measurements of the absolute branching fractions B(B-s(0) -> D-s(+/-) X), B(B-s(0) -> D-0/(D) over bar (0) X), and B(B-s(0) -> D-+/- X), where the latter is measured for the first time. The results are based on a 121.4 fb(-1) data sample collected at the Gamma(10860) resonance by the Belle detector at the KEKB asymmetric-energy e(+) e(-) collider. We reconstruct one B-s(0) meson in e(+)e(-) -> Gamma(10860). B-s*(B) over bar (s)* events and measure yields of D-s(+), D-0, and D+ mesons in the rest of the event. We obtain B(B-s(0) -> D-+/- X) = (68.6 +/- 7.2 +/- 4.0)%, B(B-s(0) -> D-0/(D) over bar X-0) = (21.5 +/- 6.1 +/- 1.8)%, and B(B-s(0) -> D-+/- X) = (12.6 +/- 4.6 +/- 1.3)%, where the first uncertainty is statistical and the second is systematic. Averaging with previous Belle measurements gives B(B-s(0) -> D-s(+/-) X) = (63.4 +/- 4.5 +/- 2.2)% and B(B-s(0) -> D-0/(D) over bar X-0) = (23.9 +/- 4.1 +/- 1.8)%. For the B-s(0) production fraction at the Gamma(10860), we find f(s) = (21.4(-1.7)(+1.5))%.
Adachi, I., Aggarwal, L., Ahmed, H., Aihara, H., Akopov, N., Aloisio, A., et al. (2025). Measurement of the inclusive branching fractions for $${B}_{s}^{0}$$ decays into D mesons via hadronic tagging. JOURNAL OF HIGH ENERGY PHYSICS, 2025(4), 0-24 [10.1007/jhep04(2025)114].
Measurement of the inclusive branching fractions for $${B}_{s}^{0}$$ decays into D mesons via hadronic tagging
Branchini, P.Membro del Collaboration Group
;Budano, A.Membro del Collaboration Group
;Bussino, S.Membro del Collaboration Group
;De Pietro, G.Membro del Collaboration Group
;Laurenza, M.Membro del Collaboration Group
;Martellini, C.Membro del Collaboration Group
;Martini, A.Membro del Collaboration Group
;
2025-01-01
Abstract
We report measurements of the absolute branching fractions B(B-s(0) -> D-s(+/-) X), B(B-s(0) -> D-0/(D) over bar (0) X), and B(B-s(0) -> D-+/- X), where the latter is measured for the first time. The results are based on a 121.4 fb(-1) data sample collected at the Gamma(10860) resonance by the Belle detector at the KEKB asymmetric-energy e(+) e(-) collider. We reconstruct one B-s(0) meson in e(+)e(-) -> Gamma(10860). B-s*(B) over bar (s)* events and measure yields of D-s(+), D-0, and D+ mesons in the rest of the event. We obtain B(B-s(0) -> D-+/- X) = (68.6 +/- 7.2 +/- 4.0)%, B(B-s(0) -> D-0/(D) over bar X-0) = (21.5 +/- 6.1 +/- 1.8)%, and B(B-s(0) -> D-+/- X) = (12.6 +/- 4.6 +/- 1.3)%, where the first uncertainty is statistical and the second is systematic. Averaging with previous Belle measurements gives B(B-s(0) -> D-s(+/-) X) = (63.4 +/- 4.5 +/- 2.2)% and B(B-s(0) -> D-0/(D) over bar X-0) = (23.9 +/- 4.1 +/- 1.8)%. For the B-s(0) production fraction at the Gamma(10860), we find f(s) = (21.4(-1.7)(+1.5))%.I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
