Study of B- →dK-π+π- and B- →dπ-π+π- decays and determination of the CKM angle γ

R. Aaij; B. Adeva; M. Adinolfi; A. Affolder; Z. Ajaltouni; S. Akar; J. Albrecht; F. Alessio; M. Alexander; S. Ali; G. Alkhazov; P. Alvarez Cartelle; A. A. Alves; S. Amato; S. Amerio; Y. Amhis; L. An; L. Anderlini; J. Anderson; M. Andreotti; J. E. Andrews; R. B. Appleby; O. Aquines Gutierrez; F. Archilli; P. D'Argent; A. Artamonov; M. Artuso; E. Aslanides; G. Auriemma; M. Baalouch; S. Bachmann; J. J. Back; S. Borghi; D. Brett; J. Brodzicka; L. Capriotti; S. De Capua; G. Dujany; M. Gersabeck; J. Harrison; C. Hombach; S. Klaver; G. Lafferty; K. Maguire; A. McNab; C. Parkes; A. Pearce; S. Reichert; E. Rodrigues; P. Rodriguez Perez; LHCb Collaboration

doi:10.1103/PhysRevD.92.112005

Study of B- →dK-π+π- and B- →dπ-π+π- decays and determination of the CKM angle γ

R. Aaij, B. Adeva, M. Adinolfi, A. Affolder, Z. Ajaltouni, S. Akar, J. Albrecht, F. Alessio, M. Alexander, S. Ali, G. Alkhazov, P. Alvarez Cartelle, A. A. Alves, S. Amato, S. Amerio, Y. Amhis, L. An, L. Anderlini, J. Anderson, M. AndreottiJ. E. Andrews, R. B. Appleby, O. Aquines Gutierrez, F. Archilli, P. D'Argent, A. Artamonov, M. Artuso, E. Aslanides, G. Auriemma, M. Baalouch, S. Bachmann, J. J. Back, S. Borghi, D. Brett, J. Brodzicka, L. Capriotti, S. De Capua, G. Dujany, M. Gersabeck, J. Harrison, C. Hombach, S. Klaver, G. Lafferty, K. Maguire, A. McNab, C. Parkes, A. Pearce, S. Reichert, E. Rodrigues, P. Rodriguez Perez, LHCb Collaboration

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Abstract

We report a study of the suppressed B-→DK-π+π- and favored B-→Dπ-π+π- decays, where the neutral D meson is detected through its decays to the K π± and CP -even K+K- and π+π- final states. The measurement is carried out using a proton-proton collision data sample collected by the LHCb experiment, corresponding to an integrated luminosity of 3.0 fb-1. We observe the first significant signals in the CP -even final states of the D meson for both the suppressed B-→DK-π+π- and favored B-→Dπ-π+π- modes, as well as in the doubly Cabibbo suppressed D→K+π- final state of the B-→Dπ-π+π- decay. Evidence for the suppressed decay B-→DK-π+π-, with D→K+π-, is also presented. From the observed yields in the B-→DK-π+π-, B-→Dπ-π+π- and their charge conjugate decay modes, the most probable value of the weak phase γ corresponds to γ=(74-19+20)°. This is one of the most precise single-measurement determinations of γ to date.

Original language	English
Article number	112005
Pages (from-to)	1-20
Number of pages	20
Journal	Physical Review D - Particles, Fields, Gravitation and Cosmology
Volume	92
Issue number	11
DOIs	https://doi.org/10.1103/PhysRevD.92.112005
Publication status	Published - 17 Dec 2015

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10.1103/PhysRevD.92.112005

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Aaij, R., Adeva, B., Adinolfi, M., Affolder, A., Ajaltouni, Z., Akar, S., Albrecht, J., Alessio, F., Alexander, M., Ali, S., Alkhazov, G., Alvarez Cartelle, P., Alves, A. A., Amato, S., Amerio, S., Amhis, Y., An, L., Anderlini, L., Anderson, J., ... LHCb Collaboration (2015). Study of B- →dK-π+π- and B- →dπ-π+π- decays and determination of the CKM angle γ. Physical Review D - Particles, Fields, Gravitation and Cosmology, 92(11), 1-20. Article 112005. https://doi.org/10.1103/PhysRevD.92.112005

@article{e311a187c36e4f3b86a7baeb6eef151f,

title = "Study of B- →dK-π+π- and B- →dπ-π+π- decays and determination of the CKM angle γ",

abstract = "We report a study of the suppressed B-→DK-π+π- and favored B-→Dπ-π+π- decays, where the neutral D meson is detected through its decays to the K π± and CP -even K+K- and π+π- final states. The measurement is carried out using a proton-proton collision data sample collected by the LHCb experiment, corresponding to an integrated luminosity of 3.0 fb-1. We observe the first significant signals in the CP -even final states of the D meson for both the suppressed B-→DK-π+π- and favored B-→Dπ-π+π- modes, as well as in the doubly Cabibbo suppressed D→K+π- final state of the B-→Dπ-π+π- decay. Evidence for the suppressed decay B-→DK-π+π-, with D→K+π-, is also presented. From the observed yields in the B-→DK-π+π-, B-→Dπ-π+π- and their charge conjugate decay modes, the most probable value of the weak phase γ corresponds to γ=(74-19+20)°. This is one of the most precise single-measurement determinations of γ to date.",

author = "R. Aaij and B. Adeva and M. Adinolfi and A. Affolder and Z. Ajaltouni and S. Akar 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. An and L. Anderlini and J. Anderson and M. Andreotti and Andrews, {J. E.} and Appleby, {R. B.} and {Aquines Gutierrez}, O. and F. Archilli and P. D'Argent and A. Artamonov and M. Artuso and E. Aslanides and G. Auriemma and M. Baalouch and S. Bachmann and Back, {J. J.} and S. Borghi and D. Brett and J. Brodzicka and L. Capriotti and {De Capua}, S. and G. Dujany and M. Gersabeck and J. Harrison and C. Hombach and S. Klaver and G. Lafferty and K. Maguire and A. McNab and C. Parkes and A. Pearce and S. Reichert and E. Rodrigues and {Rodriguez Perez}, P. and {LHCb Collaboration}",

year = "2015",

month = dec,

day = "17",

doi = "10.1103/PhysRevD.92.112005",

language = "English",

volume = "92",

pages = "1--20",

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

issn = "1550-7998",

publisher = "American Physical Society",

number = "11",

}

Aaij, R, Adeva, B, Adinolfi, M, Affolder, A, Ajaltouni, Z, Akar, S, Albrecht, J, Alessio, F, Alexander, M, Ali, S, Alkhazov, G, Alvarez Cartelle, P, Alves, AA, Amato, S, Amerio, S, Amhis, Y, An, L, Anderlini, L, Anderson, J, Andreotti, M, Andrews, JE, Appleby, RB, Aquines Gutierrez, O, Archilli, F, D'Argent, P, Artamonov, A, Artuso, M, Aslanides, E, Auriemma, G, Baalouch, M, Bachmann, S, Back, JJ, Borghi, S, Brett, D, Brodzicka, J, Capriotti, L, De Capua, S, Dujany, G, Gersabeck, M, Harrison, J, Hombach, C, Klaver, S, Lafferty, G, Maguire, K, McNab, A, Parkes, C, Pearce, A, Reichert, S, Rodrigues, E, Rodriguez Perez, P & LHCb Collaboration 2015, 'Study of B- →dK-π+π- and B- →dπ-π+π- decays and determination of the CKM angle γ', Physical Review D - Particles, Fields, Gravitation and Cosmology, vol. 92, no. 11, 112005, pp. 1-20. https://doi.org/10.1103/PhysRevD.92.112005

TY - JOUR

T1 - Study of B- →dK-π+π- and B- →dπ-π+π- decays and determination of the CKM angle γ

AU - Aaij, R.

AU - Adeva, B.

AU - Adinolfi, M.

AU - Affolder, A.

AU - Ajaltouni, Z.

AU - Akar, S.

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 - An, L.

AU - Anderlini, L.

AU - Anderson, J.

AU - Andreotti, M.

AU - Andrews, J. E.

AU - Appleby, R. B.

AU - Aquines Gutierrez, O.

AU - Archilli, F.

AU - D'Argent, P.

AU - Artamonov, A.

AU - Artuso, M.

AU - Aslanides, E.

AU - Auriemma, G.

AU - Baalouch, M.

AU - Bachmann, S.

AU - Back, J. J.

AU - Borghi, S.

AU - Brett, D.

AU - Brodzicka, J.

AU - Capriotti, L.

AU - De Capua, S.

AU - Dujany, G.

AU - Gersabeck, M.

AU - Harrison, J.

AU - Hombach, C.

AU - Klaver, S.

AU - Lafferty, G.

AU - Maguire, K.

AU - McNab, A.

AU - Parkes, C.

AU - Pearce, A.

AU - Reichert, S.

AU - Rodrigues, E.

AU - Rodriguez Perez, P.

AU - LHCb Collaboration

PY - 2015/12/17

Y1 - 2015/12/17

N2 - We report a study of the suppressed B-→DK-π+π- and favored B-→Dπ-π+π- decays, where the neutral D meson is detected through its decays to the K π± and CP -even K+K- and π+π- final states. The measurement is carried out using a proton-proton collision data sample collected by the LHCb experiment, corresponding to an integrated luminosity of 3.0 fb-1. We observe the first significant signals in the CP -even final states of the D meson for both the suppressed B-→DK-π+π- and favored B-→Dπ-π+π- modes, as well as in the doubly Cabibbo suppressed D→K+π- final state of the B-→Dπ-π+π- decay. Evidence for the suppressed decay B-→DK-π+π-, with D→K+π-, is also presented. From the observed yields in the B-→DK-π+π-, B-→Dπ-π+π- and their charge conjugate decay modes, the most probable value of the weak phase γ corresponds to γ=(74-19+20)°. This is one of the most precise single-measurement determinations of γ to date.

AB - We report a study of the suppressed B-→DK-π+π- and favored B-→Dπ-π+π- decays, where the neutral D meson is detected through its decays to the K π± and CP -even K+K- and π+π- final states. The measurement is carried out using a proton-proton collision data sample collected by the LHCb experiment, corresponding to an integrated luminosity of 3.0 fb-1. We observe the first significant signals in the CP -even final states of the D meson for both the suppressed B-→DK-π+π- and favored B-→Dπ-π+π- modes, as well as in the doubly Cabibbo suppressed D→K+π- final state of the B-→Dπ-π+π- decay. Evidence for the suppressed decay B-→DK-π+π-, with D→K+π-, is also presented. From the observed yields in the B-→DK-π+π-, B-→Dπ-π+π- and their charge conjugate decay modes, the most probable value of the weak phase γ corresponds to γ=(74-19+20)°. This is one of the most precise single-measurement determinations of γ to date.

UR - http://www.scopus.com/inward/record.url?scp=84952361982&partnerID=8YFLogxK

U2 - 10.1103/PhysRevD.92.112005

DO - 10.1103/PhysRevD.92.112005

M3 - Article

AN - SCOPUS:84952361982

SN - 1550-7998

VL - 92

SP - 1

EP - 20

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

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

IS - 11

M1 - 112005

ER -

Study of B- →dK-π+π- and B- →dπ-π+π- decays and determination of the CKM angle γ

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