2021年12月22日
Measurement of Differential Branching Fractions of Inclusive B → Xu ℓ ν_ℓ Decays
Physical Review Letters
- 巻
- 127
- 号
- 26
- 記述言語
- 英語
- 掲載種別
- 研究論文(学術雑誌)
- DOI
- 10.1103/physrevlett.127.261801
- 出版者・発行元
- American Physical Society (APS)
The first measurements of differential branching fractions of inclusive semileptonic B -> X(u)l(+)v(l) decays are performed using the full Belle data set of 711 fb(-1) of integrated luminosity at the gamma(4S) resonance and for l = e, mu. With the availability of these measurements, new avenues for future shape-function modelindependent determinations of the Cabibbo-Kobayashi-Maskawa matrix element vertical bar V-ub vertical bar, can be pursued to gain new insights in the existing tension with respect to exclusive determinations. The differential branching fractions are reported as a function of the lepton energy, the four-momentum-transfer squared, light-cone momenta, the hadronic mass, and the hadronic mass squared. They are obtained by subtracting the backgrounds from semileptonic B -> X(c)l(+)v(l), decays and other processes, and corrected for resolution and acceptance effects.
- リンク情報
-
- DOI
- https://doi.org/10.1103/physrevlett.127.261801
- Web of Science
- https://gateway.webofknowledge.com/gateway/Gateway.cgi?GWVersion=2&SrcAuth=JSTA_CEL&SrcApp=J_Gate_JST&DestLinkType=FullRecord&KeyUT=WOS:000744572600006&DestApp=WOS_CPL
- URL
- https://link.aps.org/article/10.1103/PhysRevLett.127.261801
- URL
- http://harvest.aps.org/v2/journals/articles/10.1103/PhysRevLett.127.261801/fulltext
- ID情報
-
- DOI : 10.1103/physrevlett.127.261801
- ISSN : 0031-9007
- eISSN : 1079-7114
- Web of Science ID : WOS:000744572600006