Precision measurement of the mass and lifetime of the [Xi]−b baryon
We report on measurements of the mass and lifetime of the Ξ−b baryon using about 1800 Ξ−b decays reconstructed in a proton-proton collision data set corresponding to an integrated luminosity of 3.0 fb−1 collected by the LHCb experiment. The decays are reconstructed in the Ξ−b→Ξ0cπ−, Ξ0c→pK−K−π+ chan...
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| Hauptverfasser: | , , , , , , , , , , , , , , , , , , , , , , , , , , , , |
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| Körperschaft: | |
| Dokumenttyp: | Article (Journal) |
| Sprache: | Englisch |
| Veröffentlicht: |
9 December 2014
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| In: |
Physical review letters
Year: 2014, Jahrgang: 113, Heft: 24 |
| ISSN: | 1079-7114 |
| DOI: | 10.1103/PhysRevLett.113.242002 |
| Online-Zugang: | Verlag, lizenzpflichtig, Volltext: https://doi.org/10.1103/PhysRevLett.113.242002 Verlag, lizenzpflichtig, Volltext: https://link.aps.org/doi/10.1103/PhysRevLett.113.242002 |
| Verfasserangaben: | R. Aaij et al.* (LHCb Collaboration) |
MARC
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| 245 | 1 | 0 | |a Precision measurement of the mass and lifetime of the [Xi]−b baryon |c R. Aaij et al.* (LHCb Collaboration) |
| 246 | 3 | 0 | |a Ξ |
| 246 | 3 | 3 | |a Precision measurement of the mass and lifetime of the [Xi] − b baryon |
| 264 | 1 | |c 9 December 2014 | |
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| 500 | |a *LHCb Collaboration: R. Aaij, S. Bachmann, A. Bien, A. Comerma-Montells, M. De Cian, F. Dordei, S. Esen, C. Färber, E. Gersabeck, L. Grillo, X. Han, S. Hansmann-Menzemer, A. Jaeger, M. Kolpin, K. Kreplin, G. Krocker, B. Leverington, J. Marks, M. Meissner, M. Neuner, T. Nikodem, P. Seyfert, M. Stahl, S. Stahl, U. Uwer, M. Vesterinen, S. Wandernoth, D. Wiedner, A. Zhelelov [und 673 weitere Personen] | ||
| 500 | |a Im Titel ist Xi als griechischer Buchstabe dargestellt | ||
| 500 | |a Im Titel ist das Zeichen - hochgestellt und der Buchstabe b tiefgestellt | ||
| 500 | |a Gesehen am 01.10.2020 | ||
| 520 | |a We report on measurements of the mass and lifetime of the Ξ−b baryon using about 1800 Ξ−b decays reconstructed in a proton-proton collision data set corresponding to an integrated luminosity of 3.0 fb−1 collected by the LHCb experiment. The decays are reconstructed in the Ξ−b→Ξ0cπ−, Ξ0c→pK−K−π+ channel and the mass and lifetime are measured using the Λ0b→Λ+cπ− mode as a reference. We measure M(Ξ−b)−M(Λ0b)=178.36±0.46±0.16 MeV/c2, (τΞ−b/τΛ0b)=1.089±0.026±0.011, where the uncertainties are statistical and systematic, respectively. These results lead to a factor of 2 better precision on the Ξ−b mass and lifetime compared to previous best measurements, and are consistent with theoretical expectations. | ||
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| 776 | 0 | 8 | |i Erscheint auch als |n Druck-Ausgabe |t Precision measurement of the mass and lifetime of the Xi(-)(b) baryon |d 2014 |w (DE-627)816168717 |
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