Measurement of B0s and D−s meson lifetimes
We report on a measurement of the flavor-specific B0s lifetime and of the D−s lifetime using proton-proton collisions at center-of-mass energies of 7 and 8 TeV, collected by the LHCb experiment and corresponding to 3.0 fb−1 of integrated luminosity. Approximately 407 000 B0s→D(*)−sμ+νμ decays are pa...
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| Hauptverfasser: | , , , , , , , , , , , , , , , , , , , , , , , , , |
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| Dokumenttyp: | Article (Journal) |
| Sprache: | Englisch |
| Veröffentlicht: |
8 September 2017
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| In: |
Physical review letters
Year: 2017, Jahrgang: 119, Heft: 10 |
| ISSN: | 1079-7114 |
| DOI: | 10.1103/PhysRevLett.119.101801 |
| Online-Zugang: | Verlag, Volltext: http://dx.doi.org/10.1103/PhysRevLett.119.101801 Verlag, Volltext: https://link.aps.org/doi/10.1103/PhysRevLett.119.101801 |
| Verfasserangaben: | R. Aaij et al.* (LHCb Collaboration) |
MARC
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| 245 | 1 | 0 | |a Measurement of B0s and D−s meson lifetimes |c R. Aaij et al.* (LHCb Collaboration) |
| 246 | 3 | 3 | |a Measurement of B 0 s and D − s meson lifetimes |
| 264 | 1 | |c 8 September 2017 | |
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| 500 | |a Gesehen am 29.08.2018 | ||
| 500 | |a The LHCb Collaboration: R. Aaij, P. d'Argent, S. Bachmann, S. Braun, A. Comerma-Montells, M. De Cian, M. Dziewieck, S. Esen, D. Gerick, E. Gersabeck, X. Han, S. Hansmann-Menzemer, M. Kecke, B. Khanji, R. Kopecná, B. Leverington, J. Marks, D.S. Mitzel, S. Neubert, M. Neuner, T. Nikodem, A. Piucci, M. Stahl, S. Stemmle, U. Uwer, A. Zhelezov [und weitere] | ||
| 500 | |a Im Titel sind "0" und "s" übereinander geschrieben, wobei "0" oben und "s" unten steht | ||
| 500 | |a Im Titel sind "-" und "s" übereinander geschrieben, wobei "-" oben und "s" unten steht | ||
| 520 | |a We report on a measurement of the flavor-specific B0s lifetime and of the D−s lifetime using proton-proton collisions at center-of-mass energies of 7 and 8 TeV, collected by the LHCb experiment and corresponding to 3.0 fb−1 of integrated luminosity. Approximately 407 000 B0s→D(*)−sμ+νμ decays are partially reconstructed in the K+K−π−μ+ final state. The B0s and D−s natural widths are determined using, as a reference, kinematically similar B0→D(*)−μ+νμ decays reconstructed in the same final state. The resulting differences between widths of B0s and B0 mesons and of D−s and D− mesons are ΔΓ(B)=−0.0115±0.0053(stat)±0.0041(syst) ps−1 and ΔΓ(D)=1.0131±0.0117(stat)±0.0065(syst) ps−1, respectively. Combined with the known B0 and D− lifetimes, these yield the flavor-specific B0s lifetime, τfsB0s=1.547±0.013(stat)±0.010(syst)±0.004(τB) ps and the D−s lifetime, τD−s=0.5064±0.0030(stat)±0.0017(syst)±0.0017(τD) ps. The last uncertainties originate from the limited knowledge of the B0 and D− lifetimes. The results improve upon current determinations. | ||
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