First evidence for the two-body charmless baryonic decay B0 → pp̄

R. Aaij; B. Adeva; M. Adinolfi; C. Adrover; A. Affolder; Z. Ajaltouni; J. Albrecht; F. Alessio; M. Alexander; S. Ali; G. Alkhazov; P. Alvarez Cartelle; A. A. Alves; S. Amato; S. Amerio; Y. Amhis; L. Anderlini; J. Anderson; R. Andreassen; J. E. Andrews; R. B. Appleby; O. Aquines Gutierrez; F. Archilli; A. Artamonov; M. Artuso; E. Aslanides; G. Auriemma; M. Baalouch; S. Bachmann; J. J. Back; C. Baesso; V. Balagura; W. Baldini; R. J. Barlow; C. Barschel; S. Barsuk; W. Barter; Th Bauer; A. Bay; J. Beddow; F. Bedeschi; I. Bediaga; S. Belogurov; K. Belous; I. Belyaev; E. Ben-Haim; G. Bencivenni; S. Benson; J. Benton; A. Berezhnoy; R. Bernet; M. O. Bettler; M. Van Beuzekom; A. Bien; S. Bifani; T. Bird; A. Bizzeti; P. M. Bjørnstad; T. Blake; F. Blanc; J. Blouw; S. Blusk; V. Bocci; A. Bondar; N. Bondar; W. Bonivento; S. Borghi; A. Borgia; T. J.V. Bowcock; E. Bowen; C. Bozzi; T. Brambach; J. Van Den Brand; J. Bressieux; D. Brett; M. Britsch; T. Britton; N. H. Brook; H. Brown; I. Burducea; A. Bursche; G. Busetto; J. Buytaert; S. Cadeddu; O. Callot; M. Calvi; M. Calvo Gomez; A. Camboni; P. Campana; D. Campora Perez; A. Carbone

doi:10.1007/JHEP10(2013)005

First evidence for the two-body charmless baryonic decay B⁰ → pp̄

R. Aaij
, B. Adeva
, M. Adinolfi
, C. Adrover
, A. Affolder
, Z. Ajaltouni
, J. Albrecht
, F. Alessio
, M. Alexander
, S. Ali
, G. Alkhazov
, P. Alvarez Cartelle
, A. A. Alves
, S. Amato
, S. Amerio
, Y. Amhis
, L. Anderlini
, J. Anderson
, R. Andreassen
, J. E. Andrews

R. B. Appleby, O. Aquines Gutierrez, F. Archilli, A. Artamonov, M. Artuso, E. Aslanides, G. Auriemma, M. Baalouch, S. Bachmann, J. J. Back, C. Baesso, V. Balagura, W. Baldini, R. J. Barlow, C. Barschel, S. Barsuk, W. Barter, Th Bauer, A. Bay, J. Beddow, F. Bedeschi, I. Bediaga, S. Belogurov, K. Belous, I. Belyaev, E. Ben-Haim, G. Bencivenni, S. Benson, J. Benton, A. Berezhnoy, R. Bernet, M. O. Bettler, M. Van Beuzekom, A. Bien, S. Bifani, T. Bird, A. Bizzeti, P. M. Bjørnstad, T. Blake, F. Blanc, J. Blouw, S. Blusk, V. Bocci, A. Bondar, N. Bondar, W. Bonivento, S. Borghi, A. Borgia, T. J.V. Bowcock, E. Bowen, C. Bozzi, T. Brambach, J. Van Den Brand, J. Bressieux, D. Brett, M. Britsch, T. Britton, N. H. Brook, H. Brown, I. Burducea, A. Bursche, G. Busetto, J. Buytaert, S. Cadeddu, O. Callot, M. Calvi, M. Calvo Gomez, A. Camboni, P. Campana, D. Campora Perez, A. Carbone

Research output: Contribution to journal › Article › peer-review

16 Citations (Scopus)

Abstract

The results of a search for the rare two-body charmless baryonic decays B0 → pp̄ and B0s → pp̄ are reported. The analysis uses a data sample, corresponding to an integrated luminosity of 0.9 fb-1, of pp collision data collected by the LHCb experiment at a centre-of-mass energy of 7 TeV. An excess of B0 → pp̄ candidates with respect to background expectations is seen with a statistical significance of 3.3 standard deviations. This is the first evidence for a two-body charmless baryonic B0 decay. No significant B0s → pp̄ signal is observed, leading to an improvement of three orders of magnitude over previous bounds. If the excess events are interpreted as signal, the 68.3% confidence level intervals on the branching fractions are (Equation) where the first uncertainty is statistical and the second is systematic.

Original language	English
Article number	5
Journal	Journal of High Energy Physics
Volume	2013
Issue number	10
DOIs	https://doi.org/10.1007/JHEP10(2013)005
Publication status	Published - 1 Oct 2013
Externally published	Yes

Bibliographical note

Copyright:
Copyright 2019 Elsevier B.V., All rights reserved.

All Science Journal Classification (ASJC) codes

Nuclear and High Energy Physics

Access to Document

10.1007/JHEP10(2013)005

https://www.scopus.com/inward/record.uri?partnerID=HzOxMe3b&scp=84892943021&origin=inward

Cite this

Aaij, R., Adeva, B., Adinolfi, M., Adrover, C., Affolder, A., Ajaltouni, Z., Albrecht, J., Alessio, F., Alexander, M., Ali, S., Alkhazov, G., Alvarez Cartelle, P., Alves, A. A., Amato, S., Amerio, S., Amhis, Y., Anderlini, L., Anderson, J., Andreassen, R., ... Carbone, A. (2013). First evidence for the two-body charmless baryonic decay B⁰ → pp̄. Journal of High Energy Physics, 2013(10), Article 5. https://doi.org/10.1007/JHEP10(2013)005

@article{680c2f21c02647a8b9aa80b7190905ca,

title = "First evidence for the two-body charmless baryonic decay B0 → p{\=p}",

abstract = "The results of a search for the rare two-body charmless baryonic decays B0 → p{\=p} and B0s → p{\=p} are reported. The analysis uses a data sample, corresponding to an integrated luminosity of 0.9 fb-1, of pp collision data collected by the LHCb experiment at a centre-of-mass energy of 7 TeV. An excess of B0 → p{\=p} candidates with respect to background expectations is seen with a statistical significance of 3.3 standard deviations. This is the first evidence for a two-body charmless baryonic B0 decay. No significant B0s → p{\=p} signal is observed, leading to an improvement of three orders of magnitude over previous bounds. If the excess events are interpreted as signal, the 68.3\% confidence level intervals on the branching fractions are (Equation) where the first uncertainty is statistical and the second is systematic.",

author = "R. Aaij and B. Adeva and M. Adinolfi and C. Adrover and A. Affolder and Z. Ajaltouni and J. Albrecht and F. Alessio and M. Alexander and S. Ali and G. Alkhazov and \{Alvarez Cartelle\}, P. and Alves, \{A. A.\} and S. Amato and S. Amerio and Y. Amhis and L. Anderlini and J. Anderson and R. Andreassen and Andrews, \{J. E.\} and Appleby, \{R. B.\} and \{Aquines Gutierrez\}, O. and F. Archilli and A. Artamonov and M. Artuso and E. Aslanides and G. Auriemma and M. Baalouch and S. Bachmann and Back, \{J. J.\} and C. Baesso and V. Balagura and W. Baldini and Barlow, \{R. J.\} and C. Barschel and S. Barsuk and W. Barter and Th Bauer and A. Bay and J. Beddow and F. Bedeschi and I. Bediaga and S. Belogurov and K. Belous and I. Belyaev and E. Ben-Haim and G. Bencivenni and S. Benson and J. Benton and A. Berezhnoy and R. Bernet and Bettler, \{M. O.\} and \{Van Beuzekom\}, M. and A. Bien and S. Bifani and T. Bird and A. Bizzeti and Bj{\o}rnstad, \{P. M.\} and T. Blake and F. Blanc and J. Blouw and S. Blusk and V. Bocci and A. Bondar and N. Bondar and W. Bonivento and S. Borghi and A. Borgia and Bowcock, \{T. J.V.\} and E. Bowen and C. Bozzi and T. Brambach and \{Van Den Brand\}, J. and J. Bressieux and D. Brett and M. Britsch and T. Britton and Brook, \{N. H.\} and H. Brown and I. Burducea and A. Bursche and G. Busetto and J. Buytaert and S. Cadeddu and O. Callot and M. Calvi and \{Calvo Gomez\}, M. and A. Camboni and P. Campana and \{Campora Perez\}, D. and A. Carbone",

year = "2013",

month = oct,

day = "1",

doi = "10.1007/JHEP10(2013)005",

language = "English",

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journal = "Journal of High Energy Physics",

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Aaij, R, Adeva, B, Adinolfi, M, Adrover, C, Affolder, A, Ajaltouni, Z, Albrecht, J, Alessio, F, Alexander, M, Ali, S, Alkhazov, G, Alvarez Cartelle, P, Alves, AA, Amato, S, Amerio, S, Amhis, Y, Anderlini, L, Anderson, J, Andreassen, R, Andrews, JE, Appleby, RB, Aquines Gutierrez, O, Archilli, F, Artamonov, A, Artuso, M, Aslanides, E, Auriemma, G, Baalouch, M, Bachmann, S, Back, JJ, Baesso, C, Balagura, V, Baldini, W, Barlow, RJ, Barschel, C, Barsuk, S, Barter, W, Bauer, T, Bay, A, Beddow, J, Bedeschi, F, Bediaga, I, Belogurov, S, Belous, K, Belyaev, I, Ben-Haim, E, Bencivenni, G, Benson, S, Benton, J, Berezhnoy, A, Bernet, R, Bettler, MO, Van Beuzekom, M, Bien, A, Bifani, S, Bird, T, Bizzeti, A, Bjørnstad, PM, Blake, T, Blanc, F, Blouw, J, Blusk, S, Bocci, V, Bondar, A, Bondar, N, Bonivento, W, Borghi, S, Borgia, A, Bowcock, TJV, Bowen, E, Bozzi, C, Brambach, T, Van Den Brand, J, Bressieux, J, Brett, D, Britsch, M, Britton, T, Brook, NH, Brown, H, Burducea, I, Bursche, A, Busetto, G, Buytaert, J, Cadeddu, S, Callot, O, Calvi, M, Calvo Gomez, M, Camboni, A, Campana, P, Campora Perez, D & Carbone, A 2013, 'First evidence for the two-body charmless baryonic decay B⁰ → pp̄', Journal of High Energy Physics, vol. 2013, no. 10, 5. https://doi.org/10.1007/JHEP10(2013)005

TY - JOUR

T1 - First evidence for the two-body charmless baryonic decay B0 → pp̄

AU - Aaij, R.

AU - Adeva, B.

AU - Adinolfi, M.

AU - Adrover, C.

AU - Affolder, A.

AU - Ajaltouni, Z.

AU - Albrecht, J.

AU - Alessio, F.

AU - Alexander, M.

AU - Ali, S.

AU - Alkhazov, G.

AU - Alvarez Cartelle, P.

AU - Alves, A. A.

AU - Amato, S.

AU - Amerio, S.

AU - Amhis, Y.

AU - Anderlini, L.

AU - Anderson, J.

AU - Andreassen, R.

AU - Andrews, J. E.

AU - Appleby, R. B.

AU - Aquines Gutierrez, O.

AU - Archilli, F.

AU - Artamonov, A.

AU - Artuso, M.

AU - Aslanides, E.

AU - Auriemma, G.

AU - Baalouch, M.

AU - Bachmann, S.

AU - Back, J. J.

AU - Baesso, C.

AU - Balagura, V.

AU - Baldini, W.

AU - Barlow, R. J.

AU - Barschel, C.

AU - Barsuk, S.

AU - Barter, W.

AU - Bauer, Th

AU - Bay, A.

AU - Beddow, J.

AU - Bedeschi, F.

AU - Bediaga, I.

AU - Belogurov, S.

AU - Belous, K.

AU - Belyaev, I.

AU - Ben-Haim, E.

AU - Bencivenni, G.

AU - Benson, S.

AU - Benton, J.

AU - Berezhnoy, A.

AU - Bernet, R.

AU - Bettler, M. O.

AU - Van Beuzekom, M.

AU - Bien, A.

AU - Bifani, S.

AU - Bird, T.

AU - Bizzeti, A.

AU - Bjørnstad, P. M.

AU - Blake, T.

AU - Blanc, F.

AU - Blouw, J.

AU - Blusk, S.

AU - Bocci, V.

AU - Bondar, A.

AU - Bondar, N.

AU - Bonivento, W.

AU - Borghi, S.

AU - Borgia, A.

AU - Bowcock, T. J.V.

AU - Bowen, E.

AU - Bozzi, C.

AU - Brambach, T.

AU - Van Den Brand, J.

AU - Bressieux, J.

AU - Brett, D.

AU - Britsch, M.

AU - Britton, T.

AU - Brook, N. H.

AU - Brown, H.

AU - Burducea, I.

AU - Bursche, A.

AU - Busetto, G.

AU - Buytaert, J.

AU - Cadeddu, S.

AU - Callot, O.

AU - Calvi, M.

AU - Calvo Gomez, M.

AU - Camboni, A.

AU - Campana, P.

AU - Campora Perez, D.

AU - Carbone, A.

PY - 2013/10/1

Y1 - 2013/10/1

N2 - The results of a search for the rare two-body charmless baryonic decays B0 → pp̄ and B0s → pp̄ are reported. The analysis uses a data sample, corresponding to an integrated luminosity of 0.9 fb-1, of pp collision data collected by the LHCb experiment at a centre-of-mass energy of 7 TeV. An excess of B0 → pp̄ candidates with respect to background expectations is seen with a statistical significance of 3.3 standard deviations. This is the first evidence for a two-body charmless baryonic B0 decay. No significant B0s → pp̄ signal is observed, leading to an improvement of three orders of magnitude over previous bounds. If the excess events are interpreted as signal, the 68.3% confidence level intervals on the branching fractions are (Equation) where the first uncertainty is statistical and the second is systematic.

AB - The results of a search for the rare two-body charmless baryonic decays B0 → pp̄ and B0s → pp̄ are reported. The analysis uses a data sample, corresponding to an integrated luminosity of 0.9 fb-1, of pp collision data collected by the LHCb experiment at a centre-of-mass energy of 7 TeV. An excess of B0 → pp̄ candidates with respect to background expectations is seen with a statistical significance of 3.3 standard deviations. This is the first evidence for a two-body charmless baryonic B0 decay. No significant B0s → pp̄ signal is observed, leading to an improvement of three orders of magnitude over previous bounds. If the excess events are interpreted as signal, the 68.3% confidence level intervals on the branching fractions are (Equation) where the first uncertainty is statistical and the second is systematic.

UR - https://www.scopus.com/pages/publications/84892943021

UR - https://www.scopus.com/pages/publications/84892943021#tab=citedBy

U2 - 10.1007/JHEP10(2013)005

DO - 10.1007/JHEP10(2013)005

M3 - Article

SN - 1126-6708

VL - 2013

JO - Journal of High Energy Physics

JF - Journal of High Energy Physics

IS - 10

M1 - 5

ER -