Evidence for B- → D[ast][ast]0τ-(𝜈)barτ decays
The first evidence for the decay 𝐵−→𝐷**0𝜏−‾𝜈𝜏 is obtained using proton-proton collision data collected by the LHCb experiment, corresponding to an integrated luminosity of 9 fb−1, at centre-of-mass energies of 7, 8, and 13 TeV. Here, the 𝐷**0 meson represents any of the three excited charm mesons...
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| Hauptverfasser: | , , , , , , , , , , , , , , , , , , , , , , , , , , , , , |
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| Körperschaft: | |
| Dokumenttyp: | Article (Journal) |
| Sprache: | Englisch |
| Veröffentlicht: |
8 July 2025
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| In: |
Physical review letters
Year: 2025, Jahrgang: 135, Heft: 2, Pages: 1-15 |
| ISSN: | 1079-7114 |
| DOI: | 10.1103/rj9h-n4w1 |
| Online-Zugang: | Verlag, lizenzpflichtig, Volltext: https://doi.org/10.1103/rj9h-n4w1 Verlag, lizenzpflichtig, Volltext: https://link.aps.org/doi/10.1103/rj9h-n4w1 
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| Verfasserangaben: | R. Aaij et al. (LHCb Collaboration) |
MARC
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| 245 | 1 | 0 | |a Evidence for B- → D[ast][ast]0τ-()barτ decays |c R. Aaij et al. (LHCb Collaboration) |
| 246 | 3 | 0 | |a * , , τ |
| 246 | 3 | 3 | |a Evidence for B minus → D ast ast zero tau minus nu bar tau decays |
| 264 | 1 | |c 8 July 2025 | |
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| 500 | |a The LHCb collaboration: R. Aaij, S. Bachmann, L. Carus, R. Caspary, S. Celani, C.E. Cocha Toapaxi, M. De Cian, L. Dittmann, S. Esen, F. Glaser, P.A. Günther, X. Han, S. Hausmann-Menzemer, P. Herrero Gascon, C. Langenbruch, B. Leverington, J. Marks, M.P. Morgenthaler, P.R. Pais, S.R. Roy, M. Ruiz Diaz, M. Schmelling, G. Tuci, L.H. Uecker, D.J. Unverzagt, U. Uwer, C. Wang, L. Witola, Y. Zhao, A. Zhelezov und weitere 1120 | ||
| 500 | |a Gesehen am 13.01.2026 | ||
| 500 | |a Im Titel sind die Zeichen "-", die Zahl "0" und "[ast] hochgestellt, das zweite "τ" ist tiefgestellt, das Zeichen "" steht mit einem Oberstrich | ||
| 500 | |a Im Titel ist [ast] als Tropfensternchen dargestellt | ||
| 520 | |a The first evidence for the decay −→**0−‾ is obtained using proton-proton collision data collected by the LHCb experiment, corresponding to an integrated luminosity of 9 fb−1, at centre-of-mass energies of 7, 8, and 13 TeV. Here, the **0 meson represents any of the three excited charm mesons 1(2420)0, *2(2460)0, and ′1(2400)0. The − →**0−¯ signal is measured with a significance of 3.5, including systematic uncertainties. The combined branching fraction ℬ(−→**01,2−¯)×ℬ(**01,2→*+−), where **01,2 denotes both 1(2420)0 and *2(2460)0 contributions, is measured to be [0.051±0.013(stat)±0.006(syst)±0.009(ext)]%, where the last uncertainty reflects that of the branching fraction of the normalization channel − →**01,2−(*). The ratio between the tauonic and muonic semileptonic decays, with the latter taken from world average values, is also determined and found to be ℛ(**01,2)=0.13±0.03(stat)±0.01(syst)±0.02(ext). | ||
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| SRT | |a LHCBCOLLABEVIDENCEFO8202 | ||