The LHCb collaboration; Aaij, R; Adeva, B; Adinolfi, M; 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; Archilli, F; d’Argent, P; Romeu, J Arnau; Artamonov, A; Artuso, M; Aslanides, E; Auriemma, G; Baalouch, M; Babuschkin, I; Bachmann, S; Back, JJ; Badalov, A; Baesso, C; Baker, S; Baldini, W; Barlow, RJ; Barschel, C; Barsuk, S; Barter, W; Baszczyk, M; Batozskaya, V; Batsukh, B; Battista, V; Bay, A; Beaucourt, L; Beddow, J; Bedeschi, F; Bediaga, I; Bel, LJ; Bellee, V; Belloli, N; Belous, K; Belyaev, I; Ben-Haim, E; Bencivenni, G; Benson, S; Benton, J; Berezhnoy, A; Bernet, R; Bertolin, A; Betancourt, C; Betti, F; Bettler, M-O; van Beuzekom, M; Bezshyiko, Ia; Bifani, S; Billoir, P; Bird, T; Birnkraut, A; Bitadze, A; Bizzeti, A; Blake, T; Blanc, F; Blouw, J; Blusk, S; Bocci, V; Boettcher, T; Bondar, A; Bondar, N; Bonivento, W; Bordyuzhin, I; Borgheresi, A; Borghi, S

doi:10.1007/jhep04(2017)162

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Evidence for the two-body charmless baryonic decay B+→pΛ¯

2017

The LHCb collaboration;
Aaij, R;
Adeva, B;
Adinolfi, M;
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;
Archilli, F;
d’Argent, P;
Romeu, J Arnau;
Artamonov, A;
Artuso, M;
Aslanides, E;
Auriemma, G;
Baalouch, M;
Babuschkin, I;
Bachmann, S;
Back, JJ;
Badalov, A;
Baesso, C;
Baker, S;
Baldini, W;
Barlow, RJ;
Barschel, C;
Barsuk, S;
Barter, W;
Baszczyk, M;
Batozskaya, V;
Batsukh, B;
Battista, V;
Bay, A;
Beaucourt, L;
Beddow, J;
Bedeschi, F;
Bediaga, I;
Bel, LJ;
Bellee, V;
Belloli, N;
Belous, K;
Belyaev, I;
Ben-Haim, E;
Bencivenni, G;
Benson, S;
Benton, J;
Berezhnoy, A;
Bernet, R;
Bertolin, A;
Betancourt, C;
Betti, F;
Bettler, M-O;
van Beuzekom, M;
Bezshyiko, Ia;
Bifani, S;
Billoir, P;
Bird, T;
Birnkraut, A;
Bitadze, A;
Bizzeti, A;
Blake, T;
Blanc, F;
Blouw, J;
Blusk, S;
Bocci, V;
Boettcher, T;
Bondar, A;
Bondar, N;
Bonivento, W;
Bordyuzhin, I;
Borgheresi, A;
Borghi, S;
Borisyak, M;
Borsato, M;
Bossu, F;
Boubdir, M;
Bowcock, TJV;
Bowen, E;
Bozzi, C;
Braun, S;
Britsch, M;
Britton, T;
Brodzicka, J;
Buchanan, E;
Burr, C;
Bursche, A;
Buytaert, J;
Cadeddu, S;
Calabrese, R;
Calvi, M;
Gomez, M Calvo;
Camboni, A;
Campana, P;
Perez, DH Campora;
Capriotti, L;
Carbone, A;
Carboni, G;
Cardinale, R;
Cardini, A;
Carniti, P;
Carson, L;
Akiba, K Carvalho;
Casse, G;
Cassina, L;
Garcia, L Castillo;
Cattaneo, M;
Cauet, Ch;
Cavallero, G;
Cenci, R;
Chamont, D;
Charles, M;
Charpentier, Ph;
Chatzikonstantinidis, G;
Chefdeville, M;
Chen, S;
Cheung, S-F;
Chobanova, V;
Chrzaszcz, M;
Vidal, X Cid;
Ciezarek, G;
Clarke, PEL;
Clemencic, M;
Cliff, HV;
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Coco, V;
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et al.

Published Web Location

https://doi.org/10.1007/jhep04(2017)162

Abstract

A search for the rare two-body charmless baryonic decay B+→ pΛ¯ is performed with pp collision data, corresponding to an integrated luminosity of 3 fb−1, collected by the LHCb experiment at centre-of-mass energies of 7 and 8 TeV. An excess of B+→pΛ¯ candidates with respect to background expectations is seen with a statistical significance of 4.1 standard deviations, and constitutes the first evidence for this decay. The branching fraction, measured using the B+→KS0π+ decay for normalisation,(Formula Presented.)where the first uncertainty is statistical and the second systematic.[Figure not available: see fulltext.].

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Lawrence Berkeley National Laboratory

Evidence for the two-body charmless baryonic decay B+→pΛ¯

Published Web Location