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King, Z.; Pal, B.; Schwartz, A. J.; Kuhr, T.; Ritter, M. and Schlüter, T. (2016): Search for the decay B⁰ -> φγ. In: Physical Review D, Vol. 93, No. 11, 111101

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We have searched for the decay B-0 -> phi gamma sing the full Belle data set of 772 x 10(6) B (B) over bar pairs collected at the gamma(4S) resonance with the Belle detector at the KEKB e(+)e(-) collider. No signal is observed, and we set an upper limit on the branching fraction of B(B-0 -> phi gamma) < 1.0 x 10(-7) at the 90% confidence level. This is the most stringent limit on this decay mode to date.

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