Search for B s 0 → γ γ and a measurement of the branching fraction for B s 0 → φ γ

(Belle Collaboration)

doi:10.1103/PhysRevD.91.011101

Search for B s 0 → γ γ and a measurement of the branching fraction for B s 0 → φ γ

(Belle Collaboration)

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

32 Citations (Scopus)

Abstract

We search for the decay Bs0→γγ and measure the branching fraction for Bs0→φγ using 121.4 fb-1 of data collected at the (5S) resonance with the Belle detector at the KEKB asymmetric-energy e+e- collider. The Bs0→φγ branching fraction is measured to be (3.6±0.5(stat)±0.3(syst)±0.6(fs))×10-5, where fs is the fraction of Bs(∗)B¯s(∗) in bb¯ events. Our result is in good agreement with the theoretical predictions as well as with a recent measurement from LHCb. We observe no statistically significant signal for the decay Bs0→γγ and set a 90% confidence-level upper limit on its branching fraction at 3.1×10-6. This constitutes a significant improvement over the previous result.

Original language	English
Article number	011101
Journal	Physical Review D - Particles, Fields, Gravitation and Cosmology
Volume	91
Issue number	1
DOIs	https://doi.org/10.1103/PhysRevD.91.011101
Publication status	Published - 2015 Jan 8

Bibliographical note

Publisher Copyright:
© 2015 American Physical Society.

ASJC Scopus subject areas

Nuclear and High Energy Physics
Physics and Astronomy (miscellaneous)

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10.1103/PhysRevD.91.011101

Cite this

@article{85bfc9e2c6a0470cb3b8800a2d8eeab3,

title = "Search for B s 0 → γ γ and a measurement of the branching fraction for B s 0 → φ γ",

abstract = "We search for the decay Bs0→γγ and measure the branching fraction for Bs0→φγ using 121.4 fb-1 of data collected at the (5S) resonance with the Belle detector at the KEKB asymmetric-energy e+e- collider. The Bs0→φγ branching fraction is measured to be (3.6±0.5(stat)±0.3(syst)±0.6(fs))×10-5, where fs is the fraction of Bs(∗)B¯s(∗) in bb¯ events. Our result is in good agreement with the theoretical predictions as well as with a recent measurement from LHCb. We observe no statistically significant signal for the decay Bs0→γγ and set a 90% confidence-level upper limit on its branching fraction at 3.1×10-6. This constitutes a significant improvement over the previous result.",

author = "{(Belle Collaboration)} and D. Dutta and B. Bhuyan and A. Abdesselam and I. Adachi and H. Aihara and {Al Said}, S. and K. Arinstein and Asner, {D. M.} and V. Aulchenko and T. Aushev and R. Ayad and T. Aziz and S. Bahinipati and Bakich, {A. M.} and V. Bansal and V. Bhardwaj and A. Bobrov and G. Bonvicini and M. Bra{\v c}ko and Browder, {T. E.} and D. {\v C}ervenkov and A. Chen and Cheon, {B. G.} and K. Chilikin and R. Chistov and K. Cho and V. Chobanova and Y. Choi and D. Cinabro and J. Dalseno and Z. Dole{\v Z}al and Z. Dr{\'a}sal and A. Drutskoy and K. Dutta and S. Eidelman and H. Farhat and Fast, {J. E.} and O. Frost and V. Gaur and S. Ganguly and A. Garmash and D. Getzkow and Goh, {Y. M.} and B. Golob and H. Hayashii and He, {X. H.} and Hou, {W. S.} and T. Iijima and A. Ishikawa and E. Won",

note = "Publisher Copyright: {\textcopyright} 2015 American Physical Society.",

year = "2015",

month = jan,

day = "8",

doi = "10.1103/PhysRevD.91.011101",

language = "English",

volume = "91",

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

issn = "1550-7998",

publisher = "American Institute of Physics",

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TY - JOUR

T1 - Search for B s 0 → γ γ and a measurement of the branching fraction for B s 0 → φ γ

AU - (Belle Collaboration)

AU - Dutta, D.

AU - Bhuyan, B.

AU - Abdesselam, A.

AU - Adachi, I.

AU - Aihara, H.

AU - Al Said, S.

AU - Arinstein, K.

AU - Asner, D. M.

AU - Aulchenko, V.

AU - Aushev, T.

AU - Ayad, R.

AU - Aziz, T.

AU - Bahinipati, S.

AU - Bakich, A. M.

AU - Bansal, V.

AU - Bhardwaj, V.

AU - Bobrov, A.

AU - Bonvicini, G.

AU - Bračko, M.

AU - Browder, T. E.

AU - Červenkov, D.

AU - Chen, A.

AU - Cheon, B. G.

AU - Chilikin, K.

AU - Chistov, R.

AU - Cho, K.

AU - Chobanova, V.

AU - Choi, Y.

AU - Cinabro, D.

AU - Dalseno, J.

AU - DoleŽal, Z.

AU - Drásal, Z.

AU - Drutskoy, A.

AU - Dutta, K.

AU - Eidelman, S.

AU - Farhat, H.

AU - Fast, J. E.

AU - Frost, O.

AU - Gaur, V.

AU - Ganguly, S.

AU - Garmash, A.

AU - Getzkow, D.

AU - Goh, Y. M.

AU - Golob, B.

AU - Hayashii, H.

AU - He, X. H.

AU - Hou, W. S.

AU - Iijima, T.

AU - Ishikawa, A.

AU - Won, E.

PY - 2015/1/8

Y1 - 2015/1/8

N2 - We search for the decay Bs0→γγ and measure the branching fraction for Bs0→φγ using 121.4 fb-1 of data collected at the (5S) resonance with the Belle detector at the KEKB asymmetric-energy e+e- collider. The Bs0→φγ branching fraction is measured to be (3.6±0.5(stat)±0.3(syst)±0.6(fs))×10-5, where fs is the fraction of Bs(∗)B¯s(∗) in bb¯ events. Our result is in good agreement with the theoretical predictions as well as with a recent measurement from LHCb. We observe no statistically significant signal for the decay Bs0→γγ and set a 90% confidence-level upper limit on its branching fraction at 3.1×10-6. This constitutes a significant improvement over the previous result.

AB - We search for the decay Bs0→γγ and measure the branching fraction for Bs0→φγ using 121.4 fb-1 of data collected at the (5S) resonance with the Belle detector at the KEKB asymmetric-energy e+e- collider. The Bs0→φγ branching fraction is measured to be (3.6±0.5(stat)±0.3(syst)±0.6(fs))×10-5, where fs is the fraction of Bs(∗)B¯s(∗) in bb¯ events. Our result is in good agreement with the theoretical predictions as well as with a recent measurement from LHCb. We observe no statistically significant signal for the decay Bs0→γγ and set a 90% confidence-level upper limit on its branching fraction at 3.1×10-6. This constitutes a significant improvement over the previous result.

UR - http://www.scopus.com/inward/record.url?scp=84962558618&partnerID=8YFLogxK

U2 - 10.1103/PhysRevD.91.011101

DO - 10.1103/PhysRevD.91.011101

M3 - Article

AN - SCOPUS:84962558618

SN - 1550-7998

VL - 91

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

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

IS - 1

M1 - 011101

ER -

Search for B s 0 → γ γ and a measurement of the branching fraction for B s 0 → φ γ

Abstract

Bibliographical note

ASJC Scopus subject areas

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