Measurement of the 𝐷* longitudinal polarization in 𝐵0→𝐷*−𝜏+𝜈𝜏 decays
The longitudinal polarization fraction of the 𝐷* meson is measured in 𝐵0 →𝐷*−𝜏+𝜈𝜏 decays, where the 𝜏 lepton decays to three charged pions and a neutrino, using proton-proton collision data collected by the LHCb experiment at center-of-mass energies of 7, 8 and 13 TeV and corresponding to an integ...
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| Hauptverfasser: | , , , , , , , , , , , , , , , , , , , |
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| Weitere Verfasser: | , |
| Dokumenttyp: | Article (Journal) |
| Sprache: | Englisch |
| Veröffentlicht: |
12 November 2024
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| In: |
Physical review
Year: 2024, Jahrgang: 110, Heft: 9, Pages: 092007-1-092007-18 |
| ISSN: | 2470-0029 |
| DOI: | 10.1103/PhysRevD.110.092007 |
| Online-Zugang: | Verlag, kostenfrei, Volltext: https://doi.org/10.1103/PhysRevD.110.092007 Verlag, kostenfrei, Volltext: https://link.aps.org/doi/10.1103/PhysRevD.110.092007 
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| Verfasserangaben: | R. Aaij et al. (LHCb Collaboration) |
MARC
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| 245 | 1 | 0 | |a Measurement of the * longitudinal polarization in 0→*−+ decays |c R. Aaij et al. (LHCb Collaboration) |
| 264 | 1 | |c 12 November 2024 | |
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| 500 | |a ATLAS Collaboration: R. Aaij, S. Bachmann, L. Carus, R. Caspary, C. Cocha Toapax, M. De Cian, F.C. Glaser, X. Han, S. Hansmann-Menzemer, J. Hu, C. Langenbruch, B. Leverington, J. Marks, M.P. Morgenthaler, M. Ruiz Diaz, G. Tuci, L. Uecker, D.J. Unverzagt, U. Uwer, L. Witola, Y. Zhao, A. Zhelezov [und zahlreicher weitere] | ||
| 500 | |a Gesehen am 19.12.2025 | ||
| 520 | |a The longitudinal polarization fraction of the * meson is measured in 0 →*−+ decays, where the lepton decays to three charged pions and a neutrino, using proton-proton collision data collected by the LHCb experiment at center-of-mass energies of 7, 8 and 13 TeV and corresponding to an integrated luminosity of 5 fb−1. The * polarization fraction * is measured in two 2 regions, below and above 7 GeV2/4, where 2 is defined as the squared invariant mass of the system. The * values are measured to be 0.52 ±0.07 ±0.04 and 0.34 ±0.08 ±0.02 for the lower and higher 2 regions, respectively. The first uncertainties are statistical and the second systematic. The average value over the whole 2 range is *=0.41±0.06±0.03. These results are compatible with the Standard Model predictions. | ||
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