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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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Main Authors: Aaij, Roel (Author) , Adametz, Aleksandra (Author) , Aquines Gutiérrez, Osvaldo (Author) , Bachmann, Sebastian (Author) , Bien, Alexander (Author) , Blouw, Johan (Author) , Britsch, Markward (Author) , Di Canto, Angelo (Author) , Dordei, Francesca (Author) , Färber, Christian (Author) , Fontana, Marianna (Author) , Gersabeck, Evelina (Author) , Grünberg, Oliver (Author) , Hansmann-Menzemer, Stephanie (Author) , Hartmann, Thomas (Author) , Jäger, Andreas (Author) , Kreplin, Katharina (Author) , Krocker, Georg Alexander (Author) , Linn, Christian (Author) , Marks, Jörg (Author) , Meißner, Marco (Author) , Nikodem, Thomas (Author) , Popov, Dmitry (Author) , Schmelling, Michael (Author) , Seyfert, Paul (Author) , Stahl, Sascha (Author) , Tilburg, Jeroen van (Author) , Uwer, Ulrich (Author) , Volyanskyy, D. (Author) , Voß, Christian (Author) , Voss, H. (Author) , Waldi, Roland (Author) , Wandernoth, Sebastian (Author) , Wiedner, Dirk (Author) , Zavertyaev, M. (Author) , Zhelezov, Alexey (Author)
Corporate Author: LHCb Collaboration (Author)
Format: Article (Journal)
Language:English
Published: April 2, 2013
In: Journal of high energy physics
Year: 2013, Pages: 1-16
ISSN:1029-8479
DOI:10.1007/JHEP04(2013)001
Online Access:Verlag, lizenzpflichtig, Volltext: https://doi.org/10.1007/JHEP04(2013)001
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Author Notes:The LHCb collaboration
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Summary: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).
Item Description:Im Titel sind "s" und "d" in fs/fd tiefgestellt
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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
Physical Description:Online Resource
ISSN:1029-8479
DOI:10.1007/JHEP04(2013)001

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