Measurement of the B0s → φφ branching fraction and search for the decay B0 → φφ

LHCb Collaboration; 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; G. Andreassi; 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; A. Badalov; C. Baesso; W. Baldini; R. J. Barlow; C. Barschel; S. Barsuk; S. Bifani; N. Farley; P. Griffith; P. Ilten; I. R. Kenyon; C. Lazzeroni; A. Mazurov; J. McCarthy; L. Pescatore; D. Popov; N. K. Watson

doi:10.1007/JHEP10(2015)053

Measurement of the B⁰_s → φφ branching fraction and search for the decay B⁰ → φφ

LHCb Collaboration, 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. AndersonG. Andreassi, 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, A. Badalov, C. Baesso, W. Baldini, R. J. Barlow, C. Barschel, S. Barsuk, S. Bifani, N. Farley, P. Griffith, P. Ilten, I. R. Kenyon, C. Lazzeroni, A. Mazurov, J. McCarthy, L. Pescatore, D. Popov, N. K. Watson

Physics and Astronomy

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Abstract

Using a dataset corresponding to an integrated luminosity of 3.0 fb⁻¹ collected in pp collisions at centre-of-mass energies of 7 and 8 TeV, the B⁰_s → φφ branching fraction is measured to be B(B⁰s → φφ) = (1.84 ± 0.05(stat) ± 0.07(syst) ± 0.11 (f_s/f_d) ± 0.12 (norm)) × 10⁻⁵ where f_s/f_d represents the ratio of the B⁰_s to B⁰ production cross-sections, and the B⁰ → φK^*(892)⁰ decay mode is used for normalization. This is the most precise measurement of this branching fraction to date, representing a factor five reduction in the statistical uncertainty compared with the previous best measurement. A search for the decay B⁰ → φφ is also made. No signal is observed, and an upper limit on the branching fraction is set as B(B⁰ → φφ) < 2.8 × 10⁻⁸at 90% confidence level. This is a factor of seven improvement compared to the previous best limit.

Original language	English
Article number	53
Number of pages	18
Journal	Journal of High Energy Physics
Volume	2015
Issue number	10
DOIs	https://doi.org/10.1007/JHEP10(2015)053
Publication status	Published - 8 Oct 2015

Keywords

B physics
Branching fraction
Flavor physics
Hadron-Hadron Scattering

ASJC Scopus subject areas

Nuclear and High Energy Physics

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Cite this

LHCb Collaboration, 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., ... Watson, N. K. (2015). Measurement of the B⁰_s → φφ branching fraction and search for the decay B⁰ → φφ. Journal of High Energy Physics, 2015(10), Article 53. https://doi.org/10.1007/JHEP10(2015)053

@article{1c71391e80684a17b7b2b3ba367e5cf2,

title = "Measurement of the B0s → φφ branching fraction and search for the decay B0 → φφ",

abstract = "Using a dataset corresponding to an integrated luminosity of 3.0 fb−1 collected in pp collisions at centre-of-mass energies of 7 and 8 TeV, the B0s → φφ branching fraction is measured to be B(B0s → φφ) = (1.84 ± 0.05(stat) ± 0.07(syst) ± 0.11 (fs/fd) ± 0.12 (norm)) × 10−5 where fs/fd represents the ratio of the B0s to B0 production cross-sections, and the B0 → φK*(892)0 decay mode is used for normalization. This is the most precise measurement of this branching fraction to date, representing a factor five reduction in the statistical uncertainty compared with the previous best measurement. A search for the decay B0 → φφ is also made. No signal is observed, and an upper limit on the branching fraction is set as B(B0 → φφ) < 2.8 × 10−8 at 90% confidence level. This is a factor of seven improvement compared to the previous best limit.",

keywords = "B physics, Branching fraction, Flavor physics, Hadron-Hadron Scattering",

author = "{LHCb Collaboration} and 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 G. Andreassi and M. Andreotti and Andrews, {J. E.} and Appleby, {R. B.} and {Aquines Gutierrez}, O. and F. Archilli and P. d{\textquoteright}Argent and A. Artamonov and M. Artuso and E. Aslanides and G. Auriemma and M. Baalouch and S. Bachmann and Back, {J. J.} and A. Badalov and C. Baesso and W. Baldini and Barlow, {R. J.} and C. Barschel and S. Barsuk and S. Bifani and N. Farley and P. Griffith and P. Ilten and Kenyon, {I. R.} and C. Lazzeroni and A. Mazurov and J. McCarthy and L. Pescatore and D. Popov and Watson, {N. K.}",

year = "2015",

month = oct,

day = "8",

doi = "10.1007/JHEP10(2015)053",

language = "English",

volume = "2015",

journal = "Journal of High Energy Physics",

issn = "1126-6708",

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number = "10",

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LHCb Collaboration, 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, Andreassi, G, 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, Badalov, A, Baesso, C, Baldini, W, Barlow, RJ, Barschel, C, Barsuk, S, Bifani, S, Farley, N, Griffith, P, Ilten, P, Kenyon, IR, Lazzeroni, C, Mazurov, A, McCarthy, J, Pescatore, L, Popov, D & Watson, NK 2015, 'Measurement of the B⁰_s → φφ branching fraction and search for the decay B⁰ → φφ', Journal of High Energy Physics, vol. 2015, no. 10, 53. https://doi.org/10.1007/JHEP10(2015)053

TY - JOUR

T1 - Measurement of the B0s → φφ branching fraction and search for the decay B0 → φφ

AU - LHCb Collaboration

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 - Andreassi, G.

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 - Badalov, A.

AU - Baesso, C.

AU - Baldini, W.

AU - Barlow, R. J.

AU - Barschel, C.

AU - Barsuk, S.

AU - Bifani, S.

AU - Farley, N.

AU - Griffith, P.

AU - Ilten, P.

AU - Kenyon, I. R.

AU - Lazzeroni, C.

AU - Mazurov, A.

AU - McCarthy, J.

AU - Pescatore, L.

AU - Popov, D.

AU - Watson, N. K.

PY - 2015/10/8

Y1 - 2015/10/8

N2 - Using a dataset corresponding to an integrated luminosity of 3.0 fb−1 collected in pp collisions at centre-of-mass energies of 7 and 8 TeV, the B0s → φφ branching fraction is measured to be B(B0s → φφ) = (1.84 ± 0.05(stat) ± 0.07(syst) ± 0.11 (fs/fd) ± 0.12 (norm)) × 10−5 where fs/fd represents the ratio of the B0s to B0 production cross-sections, and the B0 → φK*(892)0 decay mode is used for normalization. This is the most precise measurement of this branching fraction to date, representing a factor five reduction in the statistical uncertainty compared with the previous best measurement. A search for the decay B0 → φφ is also made. No signal is observed, and an upper limit on the branching fraction is set as B(B0 → φφ) < 2.8 × 10−8 at 90% confidence level. This is a factor of seven improvement compared to the previous best limit.

AB - Using a dataset corresponding to an integrated luminosity of 3.0 fb−1 collected in pp collisions at centre-of-mass energies of 7 and 8 TeV, the B0s → φφ branching fraction is measured to be B(B0s → φφ) = (1.84 ± 0.05(stat) ± 0.07(syst) ± 0.11 (fs/fd) ± 0.12 (norm)) × 10−5 where fs/fd represents the ratio of the B0s to B0 production cross-sections, and the B0 → φK*(892)0 decay mode is used for normalization. This is the most precise measurement of this branching fraction to date, representing a factor five reduction in the statistical uncertainty compared with the previous best measurement. A search for the decay B0 → φφ is also made. No signal is observed, and an upper limit on the branching fraction is set as B(B0 → φφ) < 2.8 × 10−8 at 90% confidence level. This is a factor of seven improvement compared to the previous best limit.

KW - B physics

KW - Branching fraction

KW - Flavor physics

KW - Hadron-Hadron Scattering

UR - http://www.scopus.com/inward/record.url?scp=84973441921&partnerID=8YFLogxK

U2 - 10.1007/JHEP10(2015)053

DO - 10.1007/JHEP10(2015)053

M3 - Article

AN - SCOPUS:84973441921

SN - 1126-6708

VL - 2015

JO - Journal of High Energy Physics

JF - Journal of High Energy Physics

IS - 10

M1 - 53

ER -

Measurement of the B0s → φφ branching fraction and search for the decay B0 → φφ