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

Publication ,  Journal Article
Dutta, D; Bhuyan, B; Abdesselam, A; Adachi, I; Aihara, H; Al Said, S; Arinstein, K; Asner, DM; Aulchenko, V; Aushev, T; Ayad, R; Aziz, T ...
Published in: Physical Review D - Particles, Fields, Gravitation and Cosmology
January 8, 2015

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.

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Published In

Physical Review D - Particles, Fields, Gravitation and Cosmology

DOI

EISSN

1550-2368

ISSN

1550-7998

Publication Date

January 8, 2015

Volume

91

Issue

1

Related Subject Headings

  • Nuclear & Particles Physics
  • 5107 Particle and high energy physics
  • 5101 Astronomical sciences
  • 4902 Mathematical physics
  • 0206 Quantum Physics
  • 0202 Atomic, Molecular, Nuclear, Particle and Plasma Physics
  • 0201 Astronomical and Space Sciences
 

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Dutta, D., Bhuyan, B., Abdesselam, A., Adachi, I., Aihara, H., Al Said, S., … RibeŽl, E. (2015). Search for B s 0 → γ γ and a measurement of the branching fraction for B s 0 → φ γ. Physical Review D - Particles, Fields, Gravitation and Cosmology, 91(1). https://doi.org/10.1103/PhysRevD.91.011101
Dutta, D., B. Bhuyan, A. Abdesselam, I. Adachi, H. Aihara, S. Al Said, K. Arinstein, et al. “Search for B s 0 → γ γ and a measurement of the branching fraction for B s 0 → φ γ.” Physical Review D - Particles, Fields, Gravitation and Cosmology 91, no. 1 (January 8, 2015). https://doi.org/10.1103/PhysRevD.91.011101.
Dutta D, Bhuyan B, Abdesselam A, Adachi I, Aihara H, Al Said S, et al. Search for B s 0 → γ γ and a measurement of the branching fraction for B s 0 → φ γ. Physical Review D - Particles, Fields, Gravitation and Cosmology. 2015 Jan 8;91(1).
Dutta, D., et al. “Search for B s 0 → γ γ and a measurement of the branching fraction for B s 0 → φ γ.” Physical Review D - Particles, Fields, Gravitation and Cosmology, vol. 91, no. 1, Jan. 2015. Scopus, doi:10.1103/PhysRevD.91.011101.
Dutta D, Bhuyan B, Abdesselam A, Adachi I, Aihara H, Al Said S, Arinstein K, Asner DM, Aulchenko V, Aushev T, Ayad R, Aziz T, Bahinipati S, Bakich AM, Bansal V, Bhardwaj V, Bobrov A, Bonvicini G, Bračko M, Browder TE, Červenkov D, Chen A, Cheon BG, Chilikin K, Chistov R, Cho K, Chobanova V, Choi Y, Cinabro D, Dalseno J, DoleŽal Z, Drásal Z, Drutskoy A, Dutta K, Eidelman S, Farhat H, Fast JE, Frost O, Gaur V, Ganguly S, Garmash A, Getzkow D, Goh YM, Golob B, Hayashii H, He XH, Hou WS, Iijima T, Ishikawa A, Iwasaki Y, Jaegle I, Joffe D, Kang KH, Kato E, Kiesling C, Kim DY, Kim JB, Kim JH, Kim KT, Kim MJ, Kim SH, Kim YJ, Kinoshita K, Ko BR, Kodyš P, Korpar S, KriŽan P, Krokovny P, Kuhr T, Kuzmin A, Kwon YJ, Lange JS, Lee IS, Lewis P, Li Y, Li Gioi L, Libby J, Liventsev D, Matvienko D, Miyata H, Mizuk R, Mohanty GB, Moll A, Mori T, Mussa R, Nakano E, Nakao M, Nanut T, Nayak M, Nisar NK, Nishida S, Ogawa S, Okuno S, Pakhlov P, Pakhlova G, Pedlar TK, Pestotnik R, Petrič M, Piilonen LE, RibeŽl E. Search for B s 0 → γ γ and a measurement of the branching fraction for B s 0 → φ γ. Physical Review D - Particles, Fields, Gravitation and Cosmology. 2015 Jan 8;91(1).

Published In

Physical Review D - Particles, Fields, Gravitation and Cosmology

DOI

EISSN

1550-2368

ISSN

1550-7998

Publication Date

January 8, 2015

Volume

91

Issue

1

Related Subject Headings

  • Nuclear & Particles Physics
  • 5107 Particle and high energy physics
  • 5101 Astronomical sciences
  • 4902 Mathematical physics
  • 0206 Quantum Physics
  • 0202 Atomic, Molecular, Nuclear, Particle and Plasma Physics
  • 0201 Astronomical and Space Sciences