Measurement of the relative B−→D0/D*0/D**0μ−¯νμ branching fractions using B− mesons from ¯B*0s2 decays
| Parent link: | Physical Review D: particles, fields, gravitation, and cosmology Vol. 99, iss. 9.— 2019.— [092009 , 16 p.] |
|---|---|
| Corporate Authors: | , |
| Other Authors: | , , , , , |
| Summary: | Title screen The decay of the narrow resonance ¯B*0s2→B−K+ can be used to determine the B− momentum in partially reconstructed decays without any assumptions on the decay products of the B− meson. This technique is employed for the first time to distinguish contributions from D0, D*0, and higher-mass charmed states (D**0) in semileptonic B− decays by using the missing-mass distribution. The measurement is performed using a data sample corresponding to an integrated luminosity of 3.0 fb−1 collected with the LHCb detector in pp collisions at center-of-mass energies of 7 and 8 TeV. The resulting branching fractions relative to the inclusive B−→D0Xμ−¯νμ arefD0=B(B−→D0μ−¯νμ)/B(B−→D0Xμ−¯νμ)=0.25±0.06,fD**0=B(B−→(D**0→D0X)μ−¯νμ)/B(B−→D0Xμ−¯νμ)=0.21±0.07,with fD*0=1−fD0−fD**0 making up the remainder. |
| Language: | English |
| Published: |
2019
|
| Subjects: | |
| Online Access: | https://doi.org/10.1103/PhysRevD.99.092009 |
| Format: | Electronic Book Chapter |
| KOHA link: | https://koha.lib.tpu.ru/cgi-bin/koha/opac-detail.pl?biblionumber=663432 |