Model-independent observation of exotic contributions to B0→J/[psi] K+ π− decays
An angular analysis of B0→J/ψK+π− decays is performed, using proton-proton collision data corresponding to an integrated luminosity of 3 fb−1 collected with the LHCb detector. The m(K+π−) spectrum is divided into fine bins. In each m(K+π−) bin, the hypothesis that the three-dimensional angular distr...
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| Hauptverfasser: | , , , , , , , , , , , , , , , , , , , , , , , , |
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| Dokumenttyp: | Article (Journal) |
| Sprache: | Englisch |
| Veröffentlicht: |
17 April 2019
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| In: |
Physical review letters
Year: 2019, Jahrgang: 122, Heft: 15, Pages: 1-10 |
| ISSN: | 1079-7114 |
| DOI: | 10.1103/PhysRevLett.122.152002 |
| Online-Zugang: | Verlag, Volltext: https://doi.org/10.1103/PhysRevLett.122.152002 Verlag, Volltext: https://link.aps.org/doi/10.1103/PhysRevLett.122.152002 |
| Verfasserangaben: | R. Aaij, S. Bachmann, D. Berninghoff, S. Braun, A. Comerma-Montells, P. d’Argent, M. Dziewiecki, D. Gerick, J.P. Grabowski, X. Han, S. Hansmann-Menzemer, J. Hu, M. Kecke, M. Kolpin, R. Kopecna, B. Leverington, J. Marks, D.S. Mitzel, S. Neubert, A. Piucci, N. Skidmore, M. Stahl, S. Stemmle, U. Uwer, A. Zhelezov [und weitere] |
| Zusammenfassung: | An angular analysis of B0→J/ψK+π− decays is performed, using proton-proton collision data corresponding to an integrated luminosity of 3 fb−1 collected with the LHCb detector. The m(K+π−) spectrum is divided into fine bins. In each m(K+π−) bin, the hypothesis that the three-dimensional angular distribution can be described by structures induced only by K∗ resonances is examined, making minimal assumptions about the K+π− system. The data reject the K∗-only hypothesis with a large significance, implying the observation of exotic contributions in a model-independent fashion. Inspection of the m(J/ψπ−) vs m(K+π−) plane suggests structures near m(J/ψπ−)=4200 and 4600 MeV. |
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| Beschreibung: | Im Titel werden "pi" und "psi" als griechische Buchstaben dargestellt Im Titel sind "0", "+" und "-" hochgestellt Gesehen am 10.05.2019 |
| Beschreibung: | Online Resource |
| ISSN: | 1079-7114 |
| DOI: | 10.1103/PhysRevLett.122.152002 |