Branching ratio of rare decay B0(Bs)→γνν

  • The three-body decay B0(Bs)→γνν can occur via penguin and box diagrams in the Standard Model (SM). These channels are useful to determine the decay constant fB (fBs) and B (Bs) meson wave function. Using the B meson wave function determined in hadronic B (Bs) decays, we calculate and get the branching ratio of order 10-9 and 10-8 for B0 and Bs decay, respectively. They agree with previous calculations.
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  • [1] . Campbell B A, O’Donnell P J. Phys. Rev., 1982, D25:1989; Ali A, B decays, ed. Stone S. Singapore: World Scientific,672. Ligeti Z, Wise M B. Phys. Rev., 1996, D53: 49373. L#220;Cai-Dian, ZHANG Da-Xing. Phys. Lett., 1996, B381:3484. Aliev T M, Ozpineci A, Savci M. Phys. Lett., 1997, B393:1435. GENG C Q, LIH C C, ZHANG W M. Phys. Rev., 1998,D57: 56976. Sirvanli B, Turan G. Mod. Phys. Lett., 2003, A18: 477. LI H N, Melic B. Eur. Phys. J., 1999, C11: 695; HUANG Tao, WU X G. Phys. Rev., 2005, D71: 0340188. LI H N, YU H L. Phys. Rev., 1996, D53: 2480; Keum YY, LI H N, Sanda A I. Phys. Rev., 2001, D63: 054008; L#220;C D, Ukai K, YANG M Z. Phys. Rev., 2001, D63: 0740099. CHARNG Y Y, LI H N. Phys. Rev., 2005, D72: 01400310. Inami T, Lim C S. Prog. Theor. Phys., 1981, 65: 297;1982, 65: 1772(E); Buchalla G, Buras A J. Nucl. Phys.,1993, B400: 22511. LIN G L, LIU J, YAO Y P. Phys. Rev., 1990, D42: 231412. Grozin A G, Neubert M. Phys. Rev., 1997, D55: 272;Beneke M, Feldmann T. Nucl. Phys., 2001, B592: 3;Beneke M, Buchalla G, Neubert M et al. Nucl. Phys., 2000,B591: 31313. Particle Data Group, Eidelman S et al. Phys. Lett., 2004,B592: 114. CHENG H Y et al. Phys. Rev., 1995, D51: 1199
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CHEN Jun-Xiao, HOU Zhao-Yu, LI Ying and Branching ratio of rare decay B0(Bs)→γνν[J]. Chinese Physics C, 2006, 30(4): 289-293.
CHEN Jun-Xiao, HOU Zhao-Yu, LI Ying and Branching ratio of rare decay B0(Bs)→γνν[J]. Chinese Physics C, 2006, 30(4): 289-293. shu
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Received: 2005-09-11
Revised: 2005-11-25
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Branching ratio of rare decay B0(Bs)→γνν

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  • Institute of High Energy Physics, CAS, Beijing 100049, China2 College of Physics Science and Information Engineering, Hebei Normal University, Shijiazhuang 050016, China3 Mathematics and Physics Department, Shijiazhuang Railway Institute,Shijiazhuang 050043, China

Abstract: The three-body decay B0(Bs)→γνν can occur via penguin and box diagrams in the Standard Model (SM). These channels are useful to determine the decay constant fB (fBs) and B (Bs) meson wave function. Using the B meson wave function determined in hadronic B (Bs) decays, we calculate and get the branching ratio of order 10-9 and 10-8 for B0 and Bs decay, respectively. They agree with previous calculations.

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