Aaij, R; Beteta, C Abellán; Adeva, B; Adinolfi, M; Affolder, A; Ajaltouni, Z; Akar, S; Albrecht, J; Alessio, F; Alexander, M; Ali, S; Alkhazov, G; Cartelle, P Alvarez; Alves, AA; Amato, S; Amerio, S; Amhis, Y; An, L; Anderlini, L; Andreassi, G; Andreotti, M; Andrews, JE; Appleby, RB; Gutierrez, O Aquines; Archilli, F; d’Argent, P; Artamonov, A; Artuso, M; Aslanides, E; Auriemma, G; Baalouch, M; Bachmann, S; Back, JJ; Badalov, A; Baesso, C; Baldini, W; Barlow, RJ; Barschel, C; Barsuk, S; Barter, W; Batozskaya, V; Battista, V; Bay, A; Beaucourt, L; Beddow, J; Bedeschi, F; Bediaga, I; Bel, LJ; Bellee, V; Belloli, N; Belyaev, I; Ben-Haim, E; Bencivenni, G; Benson, S; Benton, J; Berezhnoy, A; Bernet, R; Bertolin, A; Bettler, M-O; van Beuzekom, M; Bifani, S; Billoir, P; Bird, T; Birnkraut, A; Bizzeti, A; Blake, T; Blanc, F; Blouw, J; Blusk, S; Bocci, V; Bondar, A; Bondar, N; Bonivento, W; Borghi, S; Borisyak, M; Borsato, M; Bowcock, TJV; Bowen, E; Bozzi, C; Braun, S; Britsch, M; Britton, T; Brodzicka, J; Brook, NH; Buchanan, E

doi:10.1103/physrevd.93.051101

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First observation of the rare B+→D+K+π- decay

2016

Aaij, R;
Beteta, C Abellán;
Adeva, B;
Adinolfi, M;
Affolder, A;
Ajaltouni, Z;
Akar, S;
Albrecht, J;
Alessio, F;
Alexander, M;
Ali, S;
Alkhazov, G;
Cartelle, P Alvarez;
Alves, AA;
Amato, S;
Amerio, S;
Amhis, Y;
An, L;
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Andreassi, G;
Andreotti, M;
Andrews, JE;
Appleby, RB;
Gutierrez, O Aquines;
Archilli, F;
d’Argent, P;
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Artuso, M;
Aslanides, E;
Auriemma, G;
Baalouch, M;
Bachmann, S;
Back, JJ;
Badalov, A;
Baesso, C;
Baldini, W;
Barlow, RJ;
Barschel, C;
Barsuk, S;
Barter, W;
Batozskaya, V;
Battista, V;
Bay, A;
Beaucourt, L;
Beddow, J;
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van Beuzekom, M;
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et al.

Published Web Location

https://doi.org/10.1103/physrevd.93.051101

Abstract

The B+→D+K+π- decay is observed in a data sample corresponding to 3.0 fb-1 of pp collision data recorded by the LHCb experiment during 2011 and 2012. The signal significance is 8σ and the branching fraction is measured to be B(B+→D+K+π-)=(5.31±0.90±0.48±0.35)×10-6, where the uncertainties are statistical, systematic and due to the normalization mode B+→D-K+π+, respectively. The Dalitz plot appears to be dominated by broad structures. Angular distributions are exploited to search for quasi-two-body contributions from B+→D2∗(2460)0K+ and B+→D+K∗(892)0 decays. No significant signals are observed and upper limits are set on their branching fractions.

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Lawrence Berkeley National Laboratory

First observation of the rare B+→D+K+π- decay

Published Web Location