Search for D[ast](2007)0 → μ+ μ− in B− → π− μ+ μ− decays
The very rare D∗(2007)0 → μ+ μ− decay is searched for by analysing B− → π− μ+ μ− decays. The analysis uses a sample of beautymesons produced in proton-proton collisions collected with the LHCb detector between 2011 and 2018, corresponding to an integrated luminosity of 9 fb−1. The signal signature c...
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| Hauptverfasser: | , , , , , , , , , , , , , , , , , , , , , |
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| Körperschaft: | |
| Dokumenttyp: | Article (Journal) |
| Sprache: | Englisch |
| Veröffentlicht: |
26 July 2023
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| In: |
The European physical journal. C, Particles and fields
Year: 2023, Jahrgang: 83, Heft: 7, Pages: 1-14 |
| ISSN: | 1434-6052 |
| DOI: | 10.1140/epjc/s10052-023-11759-6 |
| Online-Zugang: | Verlag, lizenzpflichtig, Volltext: https://doi.org/10.1140/epjc/s10052-023-11759-6
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| Verfasserangaben: | LHCb collaboration* |
MARC
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| 245 | 1 | 0 | |a Search for D[ast](2007)0 → μ+ μ− in B− → π− μ+ μ− decays |c LHCb collaboration* |
| 246 | 3 | 0 | |a ∗ |
| 246 | 3 | 3 | |a Search for D [ast] (2007) 0 → mu + mu − in B− → pi − mu + mu − decays |
| 264 | 1 | |c 26 July 2023 | |
| 300 | |b Illustrationen | ||
| 300 | |a 14 | ||
| 336 | |a Text |b txt |2 rdacontent | ||
| 337 | |a Computermedien |b c |2 rdamedia | ||
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| 500 | |a Im Titel ist [ast] als Tropfensternchen dargestellt | ||
| 500 | |a Im Titel sind das Plus- und Minuszeichen sowie [ast] und die Zahl 0 hochgestellt | ||
| 500 | |a *LHCb collaboration: R. Aaij, S. Bachmann, D. Berninghoff, M. Borsato, R. Caspary, M. De Cian, G. Frau, D. Gerick, P.A. Günther, X. Han, S. Hansmann-Menzemer, J. Hu, R. Kopecna, B. Leverington, J. Marks, M.P. Morgenthaler, G. Tuci, D.J. Unverzagt, U. Uwer, C. Witola, Y. Zhao, A. Zhelezov (und sehr viele weitere Personen) | ||
| 500 | |a Gesehen am 22.05.2024 | ||
| 520 | |a The very rare D∗(2007)0 → μ+ μ− decay is searched for by analysing B− → π− μ+ μ− decays. The analysis uses a sample of beautymesons produced in proton-proton collisions collected with the LHCb detector between 2011 and 2018, corresponding to an integrated luminosity of 9 fb−1. The signal signature corresponds to simultaneous peaks in the μ+ μ− and π− μ+ μ− invariant masses. No evidence for an excess of events over background is observed and an upper limit is set on the branching fraction of the decay at B(D∗(2007)0 → μ+ μ−) < 2.6 × 10−8 at 90% confidence level. This is the first limit on the branching fraction of D∗(2007)0→ μ+ μ− decays and the most stringent limit on D∗(2007)0 decays to leptonic final states. The analysis is the first search for a rare charm-meson decay exploiting production via beauty decays. | ||
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