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

Authors

B. Wang, University of Cincinnati
K. Kinoshita, University of Cincinnati
H. Aihara, The University of Tokyo
D. M. Asner, Brookhaven National Laboratory
T. Aushev, Moscow Institute of Physics and Technology
R. Ayad, University of Tabuk
V. Babu, Deutsches Elektronen-Synchrotron (DESY)
I. Badhrees, King Abdulaziz City for Science and Technology
A. M. Bakich, The University of Sydney
P. Behera, Indian Institute of Technology Madras
C. Beleño, Georg-August-Universität Göttingen
J. Bennett, University of Mississippi
M. Bessner, University of Hawaiʻi at Mānoa
V. Bhardwaj, Indian Institute of Science Education and Research Mohali
T. Bilka, Charles University
J. Biswal, Jozef Stefan Institute
A. Bobrov, Budker Institute of Nuclear Physics of the Siberian Branch of the RAS
G. Bonvicini, Wayne State University
A. Bozek, Henryk Niewodniczanski Institute of Nuclear Physics of the Polish Academy of Sciences

Document Type

Article

Publication Date

1-1-2022

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.

Relational Format

journal article

Recommended Citation

Wang, B., Kinoshita, K., Aihara, H., Asner, D. M., Aushev, T., Ayad, R., Babu, V., Badhrees, I., Bakich, A. M., Behera, P., Beleño, C., Bennett, J., Bessner, M., Bhardwaj, V., Bilka, T., Biswal, J., Bobrov, A., Bonvicini, G., Bozek, A., … Belle Collaboration. (2022). Measurement of B ( B s → D s X ) with B s semileptonic tagging. Physical Review D, 105(1), 012004. https://doi.org/10.1103/PhysRevD.105.012004

DOI

10.1103/PhysRevD.105.012004

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