Measurement of the relative B−→D0/D[ast]0/D[astast]0[mu]μ−ν[bar][mu] branching fractions using B- mesons from B[bar][ast]0s2 decays
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 sta...
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| Hauptverfasser: | , , , , , , , , , , , , , , , , , , , , , , , |
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| Dokumenttyp: | Article (Journal) |
| Sprache: | Englisch |
| Veröffentlicht: |
31 May 2019
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| In: |
Physical review
Year: 2019, Jahrgang: 99, Heft: 9, Pages: 092009 |
| ISSN: | 2470-0029 |
| DOI: | 10.1103/PhysRevD.99.092009 |
| Online-Zugang: | Verlag, Volltext: https://doi.org/10.1103/PhysRevD.99.092009 Verlag, Volltext: https://link.aps.org/doi/10.1103/PhysRevD.99.092009 
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| Verfasserangaben: | R. Aaij et al. (LHCb Collaboration) |
MARC
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| 245 | 1 | 0 | |a Measurement of the relative B−→D0/D[ast]0/D[astast]0[mu]μ−ν[bar][mu] branching fractions using B- mesons from B[bar][ast]0s2 decays |c R. Aaij et al. (LHCb Collaboration) |
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| 246 | 3 | 3 | |a Measurement of the relative B −→D 0 /D ast0 /D astast0 my −ν bar [mu] branching fractions using B - mesons from B bar ast0 s2 decays |
| 264 | 1 | |c 31 May 2019 | |
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| 500 | |a Im Titel ist [ast] als Tropfensternchen dargestellt | ||
| 500 | |a Im Titel sind [ast] sowie "0" und die Minuszeichen hochgestellt, [my] und s2 tiefgestellt | ||
| 500 | |a Im Titel ist [mu] als griechischer Buchstabe dargestellt | ||
| 500 | |a LHCb Collaboration, R. Aaij, P. d'Argent, S. Bachmann, D. Berninghoff, S. Braun, A. Comerma-Montells, M. Dziewiecki, D. Gerick, J.P. Grabowski, X. Han, S. Hansmann-Menzemer, M. Kecke, B. Khanji, M. Kolpin, R. Kopecna, B. Leverington, J. Marks, D.S. Mitzel, M. Neuner, A. Piucci, N. Skidmore, M. Stahl, U. Uwer, A. Zhelezov [und weitere] | ||
| 500 | |a Gesehen am 01.10.2019 | ||
| 520 | |a 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 are fD0=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. | ||
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