Measurement of the fragmentation fraction ratio fs/fd and its dependence on B meson kinematics
The relative production rate of $ B_s^0 $and B0 mesons is determined with the hadronic decays $ B_s^0\to D_s^{-}{\pi^{+}} $and B0 → D−K+. The measurement uses data corresponding to 1.0 fb−1 of pp collisions at a centre-of-mass energy of $ \sqrt{s}=7 $TeV recorded in the forward region with the LHCb...
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| Hauptverfasser: | , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , |
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| Körperschaft: | |
| Dokumenttyp: | Article (Journal) |
| Sprache: | Englisch |
| Veröffentlicht: |
April 2, 2013
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| In: |
Journal of high energy physics
Year: 2013, Pages: 1-16 |
| ISSN: | 1029-8479 |
| DOI: | 10.1007/JHEP04(2013)001 |
| Online-Zugang: | Verlag, lizenzpflichtig, Volltext: https://doi.org/10.1007/JHEP04(2013)001 |
| Verfasserangaben: | The LHCb collaboration |
| Zusammenfassung: | The relative production rate of $ B_s^0 $and B0 mesons is determined with the hadronic decays $ B_s^0\to D_s^{-}{\pi^{+}} $and B0 → D−K+. The measurement uses data corresponding to 1.0 fb−1 of pp collisions at a centre-of-mass energy of $ \sqrt{s}=7 $TeV recorded in the forward region with the LHCb experiment. The ratio of production rates, fs/fd, is measured to be 0.238 ± 0.004 ± 0.015 ± 0.021, where the first uncertainty is statistical, the second systematic, and the third theoretical. This is combined with a previous LHCb measurement to obtain fs/fd = 0.256 ± 0.020. The dependence of fs/fdon the transverse momentum and pseudorapidity of the B meson is determined using the decays $ B_s^0\to D_s^{-}{\pi^{+}} $and B0 → D−π+. There is evidence for a decrease with increasing transverse momentum, whereas the ratio remains constant as a function of pseudorapidity. In addition, the ratio of branching fractions of the decays B0 → D−K+ and B0 → D−π+ is measured to be 0.0822 ± 0.0011 (stat) ± 0.0025 (syst). |
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| Beschreibung: | Im Titel sind "s" und "d" in fs/fd tiefgestellt Gesehen am 19.03.2021 LHCb collaboration: R. Aaij, A. Adametz, O. Aquines Gutierrez, S. Bachmann, A. Bien, J. Blouw, M. Britsch, A. Di Canto, F. Dordei, C. Färber, M. Fontana, E. Gersabeck, S. Hansmann-Menzemer, T. Hartmann, A. Jaeger, K. Kreplin, G. Krocker, C. Linn, J. Marks, M. Meissner, T. Nikodem, D. Popov, M. Schmelling, P. Seyfert, S. Stahl, J. van Tilburg, U. Uwer, D. Volyanskyy, C. Voß, H. Voss, R. Waldi, S. Wandernoth, D. Wiedner, M. Zavertyaev, A. Zhelezov und weitere 590 |
| Beschreibung: | Online Resource |
| ISSN: | 1029-8479 |
| DOI: | 10.1007/JHEP04(2013)001 |