First observation of B̄0→J/ψK+K - and search for B̄0→J/ψφ decays

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; A. Bursche; G. Busetto; J. Buytaert; S. Cadeddu; O. Callot; M. Calvi; M. Calvo Gomez; A. Camboni; P. Campana; D. Campora Perez; A. Carbone; G. Carboni; R. Cardinale; A. Cardini; H. Carranza-Mejia; L. Carson; K. Carvalho Akiba; G. Casse; L. Cassina

doi:10.1103/PhysRevD.88.072005

First observation of B^̄0→J/ψK⁺K ^- and search for B^̄0→J/ψφ decays

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. AndrewsR. 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, A. Bursche, G. Busetto, J. Buytaert, S. Cadeddu, O. Callot, M. Calvi, M. Calvo Gomez, A. Camboni, P. Campana, D. Campora Perez, A. Carbone, G. Carboni, R. Cardinale, A. Cardini, H. Carranza-Mejia, L. Carson, K. Carvalho Akiba, G. Casse, L. Cassina

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

30 Citations (Scopus)

Abstract

The first observation of the B ^̄0→J/ψK ⁺K ^- decay is presented with a data sample corresponding to an integrated luminosity of 1.0 fb ^-1 of pp collisions at a center-of-mass energy of 7 TeV collected with the LHCb detector. The branching fraction is measured to be B(B ^̄0→J/ψK ⁺K ^-)=(2.53±0.31±0.19)×10 ^-6, where the first uncertainty is statistical and the second is systematic. An amplitude analysis of the final state in the B ^̄0→J/ψK ⁺K ^- decay is performed to separate resonant and nonresonant contributions in the K ⁺K ^- spectrum. Evidence of the a ₀(980) resonance is reported with statistical significance of 3.9 standard deviations. The corresponding product branching fraction is measured to be B(B ^̄0→J/ψa ₀(980),a ₀(980)→K ⁺K ^-)=(4.70±3.31±0. 72)×10 ^-7, yielding an upper limit of B(B ^̄0→J/ψa ₀(980),a ₀(980)→K ⁺K ^-)<9.0×10 ^-7 at 90% confidence level. No evidence of the resonant decay B ^̄0→J/ψφ is found, and an upper limit on its branching fraction is set to be B(B ^̄0→J/ψφ)<1.9×10 ^-7 at 90% confidence level.

Original language	English
Article number	072005
Journal	Physical Review D - Particles, Fields, Gravitation and Cosmology
Volume	88
Issue number	7
DOIs	https://doi.org/10.1103/PhysRevD.88.072005
Publication status	Published - 14 Oct 2013
Externally published	Yes

Bibliographical note

Copyright:
Copyright 2013 Elsevier B.V., All rights reserved.

All Science Journal Classification (ASJC) codes

Nuclear and High Energy Physics
Physics and Astronomy (miscellaneous)

Access to Document

10.1103/PhysRevD.88.072005

https://www.scopus.com/inward/record.uri?partnerID=HzOxMe3b&scp=84886876859&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., ... Cassina, L. (2013). First observation of B^̄0→J/ψK⁺K ^- and search for B^̄0→J/ψφ decays. Physical Review D - Particles, Fields, Gravitation and Cosmology, 88(7), Article 072005. https://doi.org/10.1103/PhysRevD.88.072005

@article{080f2224cf704d4f9dd52fd755bb7938,

title = "First observation of {\=B}0→J/ψK+K - and search for {\=B}0→J/ψφ decays",

abstract = "The first observation of the B{\= }0→J/ψK +K - decay is presented with a data sample corresponding to an integrated luminosity of 1.0 fb -1 of pp collisions at a center-of-mass energy of 7 TeV collected with the LHCb detector. The branching fraction is measured to be B(B{\= }0→J/ψK +K -)=(2.53±0.31±0.19)×10 -6, where the first uncertainty is statistical and the second is systematic. An amplitude analysis of the final state in the B{\= }0→J/ψK +K - decay is performed to separate resonant and nonresonant contributions in the K +K - spectrum. Evidence of the a 0(980) resonance is reported with statistical significance of 3.9 standard deviations. The corresponding product branching fraction is measured to be B(B{\= }0→J/ψa 0(980),a 0(980)→K +K -)=(4.70±3.31±0. 72)×10 -7, yielding an upper limit of B(B{\= }0→J/ψa 0(980),a 0(980)→K +K -)<9.0×10 -7 at 90% confidence level. No evidence of the resonant decay B{\= }0→J/ψφ is found, and an upper limit on its branching fraction is set to be B(B{\= }0→J/ψφ)<1.9×10 -7 at 90% confidence level.",

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 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 and G. Carboni and R. Cardinale and A. Cardini and H. Carranza-Mejia and L. Carson and {Carvalho Akiba}, K. and G. Casse and L. Cassina",

year = "2013",

month = oct,

day = "14",

doi = "10.1103/PhysRevD.88.072005",

language = "English",

volume = "88",

journal = "Physical Review D - Particles, Fields, Gravitation and Cosmology",

issn = "1550-7998",

publisher = "American Physical Society",

number = "7",

}

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, Bursche, A, Busetto, G, Buytaert, J, Cadeddu, S, Callot, O, Calvi, M, Calvo Gomez, M, Camboni, A, Campana, P, Campora Perez, D, Carbone, A, Carboni, G, Cardinale, R, Cardini, A, Carranza-Mejia, H, Carson, L, Carvalho Akiba, K, Casse, G & Cassina, L 2013, 'First observation of B^̄0→J/ψK⁺K ^- and search for B^̄0→J/ψφ decays', Physical Review D - Particles, Fields, Gravitation and Cosmology, vol. 88, no. 7, 072005. https://doi.org/10.1103/PhysRevD.88.072005

TY - JOUR

T1 - First observation of B̄0→J/ψK+K - and search for B̄0→J/ψφ decays

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 - 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.

AU - Carboni, G.

AU - Cardinale, R.

AU - Cardini, A.

AU - Carranza-Mejia, H.

AU - Carson, L.

AU - Carvalho Akiba, K.

AU - Casse, G.

AU - Cassina, L.

PY - 2013/10/14

Y1 - 2013/10/14

N2 - The first observation of the B ̄0→J/ψK +K - decay is presented with a data sample corresponding to an integrated luminosity of 1.0 fb -1 of pp collisions at a center-of-mass energy of 7 TeV collected with the LHCb detector. The branching fraction is measured to be B(B ̄0→J/ψK +K -)=(2.53±0.31±0.19)×10 -6, where the first uncertainty is statistical and the second is systematic. An amplitude analysis of the final state in the B ̄0→J/ψK +K - decay is performed to separate resonant and nonresonant contributions in the K +K - spectrum. Evidence of the a 0(980) resonance is reported with statistical significance of 3.9 standard deviations. The corresponding product branching fraction is measured to be B(B ̄0→J/ψa 0(980),a 0(980)→K +K -)=(4.70±3.31±0. 72)×10 -7, yielding an upper limit of B(B ̄0→J/ψa 0(980),a 0(980)→K +K -)<9.0×10 -7 at 90% confidence level. No evidence of the resonant decay B ̄0→J/ψφ is found, and an upper limit on its branching fraction is set to be B(B ̄0→J/ψφ)<1.9×10 -7 at 90% confidence level.

AB - The first observation of the B ̄0→J/ψK +K - decay is presented with a data sample corresponding to an integrated luminosity of 1.0 fb -1 of pp collisions at a center-of-mass energy of 7 TeV collected with the LHCb detector. The branching fraction is measured to be B(B ̄0→J/ψK +K -)=(2.53±0.31±0.19)×10 -6, where the first uncertainty is statistical and the second is systematic. An amplitude analysis of the final state in the B ̄0→J/ψK +K - decay is performed to separate resonant and nonresonant contributions in the K +K - spectrum. Evidence of the a 0(980) resonance is reported with statistical significance of 3.9 standard deviations. The corresponding product branching fraction is measured to be B(B ̄0→J/ψa 0(980),a 0(980)→K +K -)=(4.70±3.31±0. 72)×10 -7, yielding an upper limit of B(B ̄0→J/ψa 0(980),a 0(980)→K +K -)<9.0×10 -7 at 90% confidence level. No evidence of the resonant decay B ̄0→J/ψφ is found, and an upper limit on its branching fraction is set to be B(B ̄0→J/ψφ)<1.9×10 -7 at 90% confidence level.

UR - http://www.scopus.com/inward/record.url?scp=84886876859&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=84886876859&partnerID=8YFLogxK

UR - https://www.mendeley.com/catalogue/b8596128-7ffb-350f-964f-4715eaecfa01/

U2 - 10.1103/PhysRevD.88.072005

DO - 10.1103/PhysRevD.88.072005

M3 - Article

SN - 1550-7998

VL - 88

JO - Physical Review D - Particles, Fields, Gravitation and Cosmology

JF - Physical Review D - Particles, Fields, Gravitation and Cosmology

IS - 7

M1 - 072005

ER -