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Observation of B+→J/[psi]3π+2π− and B+→[psi](2S)π+π+π− decays

The decays B+→J/ψ3π+2π−B+→J/ψ3π+2π−{{\mathrm {B}} ^+} \rightarrow {{\mathrm {J}/\uppsi }} 3{{\uppi } ^+} 2{{\uppi } ^-} and B+→ψ(2S)π+π+π−B+→ψ(2S)π+π+π−{{\mathrm {B}} ^+} \rightarrow {\uppsi {(2\mathrm {S})}} {{\uppi } ^+} {{\uppi } ^+} {{\uppi } ^-} are observed for the first time using a data samp...

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Main Authors: Aaij, Roel (Author) , D'Argent, Philippe (Author) , Bachmann, Sebastian (Author) , Braun, Svende (Author) , Britsch, Markward (Author) , Comerma-Montells, Albert (Author) , De Cian, Michel (Author) , Esen, Sevda (Author) , Gerick, David (Author) , Gersabeck, Evelina (Author) , Han, Xiaoxue (Author) , Hansmann-Menzemer, Stephanie (Author) , Kecke, Matthieu (Author) , Khanji, Basem (Author) , Kolpin, Michael (Author) , Kreplin, Katharina (Author) , Leverington, Blake (Author) , Marks, Jörg (Author) , Meißner, Marco (Author) , Mitzel, Dominik (Author) , Neubert, Sebastian (Author) , Neuner, Max (Author) , Nikodem, Thomas (Author) , Piucci, Alessio (Author) , Schiller, Manuel (Author) , Seyfert, Paul (Author) , Stahl, Marian (Author) , Stemmle, Simon (Author) , Tilburg, Jeroen van (Author) , Uwer, Ulrich (Author) , Vesterinen, Mika (Author) , Waldi, Roland (Author) , Zhelezov, Alexey (Author)
Corporate Author: LHCb Collaboration (Author)
Format: Article (Journal)
Language:English
Published: 6 February 2017
In: The European physical journal. C, Particles and fields
Year: 2017, Volume: 77, Issue: 2
ISSN:1434-6052
DOI:10.1140/epjc/s10052-017-4610-6
Online Access:Verlag, kostenfrei, Volltext: http://dx.doi.org/10.1140/epjc/s10052-017-4610-6
Verlag, kostenfrei, Volltext: https://doi.org/10.1140/epjc/s10052-017-4610-6
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Author Notes:LHCb Collaboration*
Description
Summary:The decays B+→J/ψ3π+2π−B+→J/ψ3π+2π−{{\mathrm {B}} ^+} \rightarrow {{\mathrm {J}/\uppsi }} 3{{\uppi } ^+} 2{{\uppi } ^-} and B+→ψ(2S)π+π+π−B+→ψ(2S)π+π+π−{{\mathrm {B}} ^+} \rightarrow {\uppsi {(2\mathrm {S})}} {{\uppi } ^+} {{\uppi } ^+} {{\uppi } ^-} are observed for the first time using a data sample corresponding to an integrated luminosity of 3.0 fb−1−1^{-1}, collected by the LHCb experiment in proton-proton collisions at the centre-of-mass energies of 7 and 8TeVTeV\mathrm {\,TeV}. The branching fractions relative to that of B+→ψ(2S)K+B+→ψ(2S)K+{{\mathrm {B}} ^+} \rightarrow {\uppsi {(2\mathrm {S})}} {{\mathrm {K}} ^+} are measured to be B(B+→J/ψ3π+2π−)B(B+→ψ(2S)K+)=B(B+→ψ(2S)π+π+π−)B(B+→ψ(2S)K+)=(1.88±0.17±0.09)×10−2,(3.04±0.50±0.26)×10−2,B(B+→J/ψ3π+2π−)B(B+→ψ(2S)K+)=(1.88±0.17±0.09)×10−2,B(B+→ψ(2S)π+π+π−)B(B+→ψ(2S)K+)=(3.04±0.50±0.26)×10−2,\begin{aligned} \dfrac{{\mathcal {B}} ( {{\mathrm {B}} ^+} \rightarrow {{\mathrm {J}/\uppsi }} 3{{\uppi } ^+} 2{{\uppi } ^-} )}{{\mathcal {B}} ( {{\mathrm {B}} ^+} \rightarrow {\uppsi {(2\mathrm {S})}} {{\mathrm {K}} ^+} )}= & {} ( 1.88\!\pm \! 0.17\!\pm \! 0.09)\!\times \! 10^{-2}, \\ \dfrac{{\mathcal {B}} ( {{\mathrm {B}} ^+} \rightarrow {\uppsi {(2\mathrm {S})}} {{\uppi } ^+} {{\uppi } ^+} {{\uppi } ^-} )}{{\mathcal {B}} ( {{\mathrm {B}} ^+} \rightarrow {\uppsi {(2\mathrm {S})}} {{\mathrm {K}} ^+} )}= & {} ( 3.04\!\pm \!0.50\!\pm \!0.26)\!\times \! 10^{-2}, \end{aligned}where the first uncertainties are statistical and the second are systematic.
Item Description:Im Titel sind die Plus- und Minus-Zeichen hochgestellt
Im Titel werden "psi" und "pi" als griechische Buchstaben dargestellt
LHCb Collaboration: R. Aaij, P. d’Argent, S. Bachmann, S. Braun, M. Britsch, A. Comerma-Montells, M. De Cian, S. Esen, D.Gerick, E. Gersabeck, X.Han, S. Hansmann-Menzemer, M. Kecke, B. Khanji, M. Kolpin, K. Kreplin, B. Leverington, J. Marks, M. Meissner, D.S. Mitzel, S. Neubert, M. Neuner, T. Nikodem, A. Piucci, P. Seyfert, M. Schiller, M. Stahl, S. Stemmle, J. v. Tilburg, U. Uwer, M. Vesterinen, R. Waldi, A. Zhelezov [und weitere]
Gesehen am 30.10.2018
Physical Description:Online Resource
ISSN:1434-6052
DOI:10.1140/epjc/s10052-017-4610-6

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