We report the first direct measurement of the inclusive branching fraction B(Bs→DsX) via Bs tagging in e+e-→ (5S) events. Tagging is accomplished through a partial reconstruction of semileptonic decays Bs→DsXℓν, where X denotes unreconstructed additional hadrons or photons and ℓ is an electron or muon. With 121.4 fb-1 of data collected at the (5S) resonance by the Belle detector at the KEKB asymmetric-energy e+e- collider, we obtain B(Bs→DsX)=(60.2±5.8±2.3)%, where the first uncertainty is statistical and the second is systematic.

Measurement of B (Bs →dsX) with Bs semileptonic tagging / Wang, B., Kinoshita, K., Aihara, H., Asner, D.M., Aushev, T., Ayad, R., Babu, V., Badhrees, I., Bakich, A.M., Behera, P., Beleno, C., Bennett, J., Bessner, M., Bhardwaj, V., Bilka, T., Biswal, J., Bobrov, A., Bonvicini, G., Bozek, A., Bracko, M., et al.. - In: PHYSICAL REVIEW D. - ISSN 2470-0010. - 105:1(2022). [10.1103/PhysRevD.105.012004]

Measurement of B (Bs →dsX) with Bs semileptonic tagging

Campajola M.;Di Capua F.;Merola M.;Pardi S.;Russo Guido;
2022

Abstract

We report the first direct measurement of the inclusive branching fraction B(Bs→DsX) via Bs tagging in e+e-→ (5S) events. Tagging is accomplished through a partial reconstruction of semileptonic decays Bs→DsXℓν, where X denotes unreconstructed additional hadrons or photons and ℓ is an electron or muon. With 121.4 fb-1 of data collected at the (5S) resonance by the Belle detector at the KEKB asymmetric-energy e+e- collider, we obtain B(Bs→DsX)=(60.2±5.8±2.3)%, where the first uncertainty is statistical and the second is systematic.
2022
Measurement of B (Bs →dsX) with Bs semileptonic tagging / Wang, B., Kinoshita, K., Aihara, H., Asner, D.M., Aushev, T., Ayad, R., Babu, V., Badhrees, I., Bakich, A.M., Behera, P., Beleno, C., Bennett, J., Bessner, M., Bhardwaj, V., Bilka, T., Biswal, J., Bobrov, A., Bonvicini, G., Bozek, A., Bracko, M., et al.. - In: PHYSICAL REVIEW D. - ISSN 2470-0010. - 105:1(2022). [10.1103/PhysRevD.105.012004]
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11588/968968
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