Analysis of the resonant components in B̄0→J/ ψπ+π-

R. Aaij; C. Abellan Beteta; A. Adametz; 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; Y. Amhis; L. Anderlini; J. Anderson; R. Andreassen; R. B. Appleby; O. Aquines Gutierrez; F. Archilli; A. Artamonov; M. Artuso; E. Aslanides; G. Auriemma; 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; I. Bediaga; S. Belogurov; K. Belous; I. Belyaev; E. Ben-Haim; M. Benayoun; 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; C. Blanks; J. Blouw; S. Blusk; A. Bobrov; 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; J. Buytaert; S. Cadeddu; O. Callot; M. Calvi; M. Calvo Gomez; A. Camboni; P. Campana; A. Carbone; G. Carboni; R. Cardinale; A. Cardini; H. Carranza-Mejia; L. Carson; K. Carvalho Akiba; G. Casse; M. Cattaneo

doi:10.1103/PhysRevD.87.052001

Analysis of the resonant components in B^̄0→J/ ψπ⁺π^-

R. Aaij, C. Abellan Beteta, A. Adametz, 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, Y. Amhis, L. Anderlini, J. Anderson, R. AndreassenR. B. Appleby, O. Aquines Gutierrez, F. Archilli, A. Artamonov, M. Artuso, E. Aslanides, G. Auriemma, 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, I. Bediaga, S. Belogurov, K. Belous, I. Belyaev, E. Ben-Haim, M. Benayoun, 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, C. Blanks, J. Blouw, S. Blusk, A. Bobrov, 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, J. Buytaert, S. Cadeddu, O. Callot, M. Calvi, M. Calvo Gomez, A. Camboni, P. Campana, A. Carbone, G. Carboni, R. Cardinale, A. Cardini, H. Carranza-Mejia, L. Carson, K. Carvalho Akiba, G. Casse, M. Cattaneo

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

88 Citations (Scopus)

Abstract

Interpretation of CP violation measurements using charmonium decays, in both the B ^̄0 and B̄s0 systems, can be subject to changes due to "penguin" type diagrams. These effects can be investigated using measurements of the Cabibbo-suppressed B ^̄0→J/ ψπ ⁺π ^- decays. The final state composition of this channel is investigated using a 1.0 fb ^-1 sample of data produced in 7 TeV pp collisions at the LHC and collected by the LHCb experiment. A modified Dalitz-plot analysis is performed using both the invariant mass spectra and the decay angular distributions. An improved measurement of the B ^̄0→J/ψπ ⁺π ^- branching fraction of (3.97±0.09±0.11±0.16)×10 ^-5 is reported where the first uncertainty is statistical, the second is systematic, and the third is due to the uncertainty of the branching fraction of the decay B ^-→J/ψK ^- used as a normalization channel. Significant production of f ₀(500) and ρ(770) resonances is found in the substructure of the J/ψπ ⁺π ^- final state, and this indicates that they are viable final states for CP violation studies. In contrast evidence for the f ₀(980) resonance is not found. This allows us to establish the first upper limit on the branching fraction product B(B ^̄0→J/ψf ₀(980))×B(f ₀(980)→π ⁺π ^-)<1.1×10 ^-6, leading to an upper limit on the absolute value of the mixing angle of the f ₀(980) with the f ₀(500) of less than 31, both at 90% confidence level.

Original language	English
Article number	052001
Journal	Physical Review D - Particles, Fields, Gravitation and Cosmology
Volume	87
Issue number	5
DOIs	https://doi.org/10.1103/PhysRevD.87.052001
Publication status	Published - 1 Mar 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.87.052001

https://www.scopus.com/inward/record.uri?partnerID=HzOxMe3b&scp=84874989120&origin=inward

Cite this

Aaij, R., Abellan Beteta, C., Adametz, A., 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., Amhis, Y., Anderlini, L., Anderson, J., ... Cattaneo, M. (2013). Analysis of the resonant components in B^̄0→J/ ψπ⁺π^-. Physical Review D - Particles, Fields, Gravitation and Cosmology, 87(5), Article 052001. https://doi.org/10.1103/PhysRevD.87.052001

@article{18655a1615f14febb2c3428f9a9ba48d,

title = "Analysis of the resonant components in {\=B}0→J/ ψπ+π-",

abstract = "Interpretation of CP violation measurements using charmonium decays, in both the B{\= }0 and {\=B}s0 systems, can be subject to changes due to {"}penguin{"} type diagrams. These effects can be investigated using measurements of the Cabibbo-suppressed B{\= }0→J/ ψπ +π - decays. The final state composition of this channel is investigated using a 1.0 fb -1 sample of data produced in 7 TeV pp collisions at the LHC and collected by the LHCb experiment. A modified Dalitz-plot analysis is performed using both the invariant mass spectra and the decay angular distributions. An improved measurement of the B{\= }0→J/ψπ +π - branching fraction of (3.97±0.09±0.11±0.16)×10 -5 is reported where the first uncertainty is statistical, the second is systematic, and the third is due to the uncertainty of the branching fraction of the decay B -→J/ψK - used as a normalization channel. Significant production of f 0(500) and ρ(770) resonances is found in the substructure of the J/ψπ +π - final state, and this indicates that they are viable final states for CP violation studies. In contrast evidence for the f 0(980) resonance is not found. This allows us to establish the first upper limit on the branching fraction product B(B{\= }0→J/ψf 0(980))×B(f 0(980)→π +π -)<1.1×10 -6, leading to an upper limit on the absolute value of the mixing angle of the f 0(980) with the f 0(500) of less than 31, both at 90% confidence level.",

author = "R. Aaij and {Abellan Beteta}, C. and A. Adametz 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 Y. Amhis and L. Anderlini and J. Anderson and R. Andreassen and Appleby, {R. B.} and {Aquines Gutierrez}, O. and F. Archilli and A. Artamonov and M. Artuso and E. Aslanides and G. Auriemma 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 I. Bediaga and S. Belogurov and K. Belous and I. Belyaev and E. Ben-Haim and M. Benayoun 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 C. Blanks and J. Blouw and S. Blusk and A. Bobrov 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 J. Buytaert and S. Cadeddu and O. Callot and M. Calvi and {Calvo Gomez}, M. and A. Camboni and P. Campana 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 M. Cattaneo",

year = "2013",

month = mar,

day = "1",

doi = "10.1103/PhysRevD.87.052001",

language = "English",

volume = "87",

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

issn = "1550-7998",

publisher = "American Physical Society",

number = "5",

}

Aaij, R, Abellan Beteta, C, Adametz, A, 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, Amhis, Y, Anderlini, L, Anderson, J, Andreassen, R, Appleby, RB, Aquines Gutierrez, O, Archilli, F, Artamonov, A, Artuso, M, Aslanides, E, Auriemma, G, Bachmann, S, Back, JJ, Baesso, C, Balagura, V, Baldini, W, Barlow, RJ, Barschel, C, Barsuk, S, Barter, W, Bauer, T, Bay, A, Beddow, J, Bediaga, I, Belogurov, S, Belous, K, Belyaev, I, Ben-Haim, E, Benayoun, M, 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, Blanks, C, Blouw, J, Blusk, S, Bobrov, A, 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, Buytaert, J, Cadeddu, S, Callot, O, Calvi, M, Calvo Gomez, M, Camboni, A, Campana, P, Carbone, A, Carboni, G, Cardinale, R, Cardini, A, Carranza-Mejia, H, Carson, L, Carvalho Akiba, K, Casse, G & Cattaneo, M 2013, 'Analysis of the resonant components in B^̄0→J/ ψπ⁺π^-', Physical Review D - Particles, Fields, Gravitation and Cosmology, vol. 87, no. 5, 052001. https://doi.org/10.1103/PhysRevD.87.052001

TY - JOUR

T1 - Analysis of the resonant components in B̄0→J/ ψπ+π-

AU - Aaij, R.

AU - Abellan Beteta, C.

AU - Adametz, A.

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 - Amhis, Y.

AU - Anderlini, L.

AU - Anderson, J.

AU - Andreassen, R.

AU - Appleby, R. B.

AU - Aquines Gutierrez, O.

AU - Archilli, F.

AU - Artamonov, A.

AU - Artuso, M.

AU - Aslanides, E.

AU - Auriemma, G.

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 - Bediaga, I.

AU - Belogurov, S.

AU - Belous, K.

AU - Belyaev, I.

AU - Ben-Haim, E.

AU - Benayoun, M.

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 - Blanks, C.

AU - Blouw, J.

AU - Blusk, S.

AU - Bobrov, A.

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 - Buytaert, J.

AU - Cadeddu, S.

AU - Callot, O.

AU - Calvi, M.

AU - Calvo Gomez, M.

AU - Camboni, A.

AU - Campana, P.

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 - Cattaneo, M.

PY - 2013/3/1

Y1 - 2013/3/1

N2 - Interpretation of CP violation measurements using charmonium decays, in both the B ̄0 and B̄s0 systems, can be subject to changes due to "penguin" type diagrams. These effects can be investigated using measurements of the Cabibbo-suppressed B ̄0→J/ ψπ +π - decays. The final state composition of this channel is investigated using a 1.0 fb -1 sample of data produced in 7 TeV pp collisions at the LHC and collected by the LHCb experiment. A modified Dalitz-plot analysis is performed using both the invariant mass spectra and the decay angular distributions. An improved measurement of the B ̄0→J/ψπ +π - branching fraction of (3.97±0.09±0.11±0.16)×10 -5 is reported where the first uncertainty is statistical, the second is systematic, and the third is due to the uncertainty of the branching fraction of the decay B -→J/ψK - used as a normalization channel. Significant production of f 0(500) and ρ(770) resonances is found in the substructure of the J/ψπ +π - final state, and this indicates that they are viable final states for CP violation studies. In contrast evidence for the f 0(980) resonance is not found. This allows us to establish the first upper limit on the branching fraction product B(B ̄0→J/ψf 0(980))×B(f 0(980)→π +π -)<1.1×10 -6, leading to an upper limit on the absolute value of the mixing angle of the f 0(980) with the f 0(500) of less than 31, both at 90% confidence level.

AB - Interpretation of CP violation measurements using charmonium decays, in both the B ̄0 and B̄s0 systems, can be subject to changes due to "penguin" type diagrams. These effects can be investigated using measurements of the Cabibbo-suppressed B ̄0→J/ ψπ +π - decays. The final state composition of this channel is investigated using a 1.0 fb -1 sample of data produced in 7 TeV pp collisions at the LHC and collected by the LHCb experiment. A modified Dalitz-plot analysis is performed using both the invariant mass spectra and the decay angular distributions. An improved measurement of the B ̄0→J/ψπ +π - branching fraction of (3.97±0.09±0.11±0.16)×10 -5 is reported where the first uncertainty is statistical, the second is systematic, and the third is due to the uncertainty of the branching fraction of the decay B -→J/ψK - used as a normalization channel. Significant production of f 0(500) and ρ(770) resonances is found in the substructure of the J/ψπ +π - final state, and this indicates that they are viable final states for CP violation studies. In contrast evidence for the f 0(980) resonance is not found. This allows us to establish the first upper limit on the branching fraction product B(B ̄0→J/ψf 0(980))×B(f 0(980)→π +π -)<1.1×10 -6, leading to an upper limit on the absolute value of the mixing angle of the f 0(980) with the f 0(500) of less than 31, both at 90% confidence level.

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U2 - 10.1103/PhysRevD.87.052001

DO - 10.1103/PhysRevD.87.052001

M3 - Article

SN - 1550-7998

VL - 87

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

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

IS - 5

M1 - 052001

ER -