Search for the rare decay B+ --> l+ nu gamma at Belle and Belle I

Sumitted to PubDB: 2018-02-09

Category: Talk, Visibility: Public

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Authors	Moritz Gelb
Date	Jan. 11, 2018
Belle II Number	BELLE2-TALK-CONF-2018-010
Abstract	The Belle experiment recored during its runtime a dataset corresponding to an integrated luminosity of 711 fb^-1 at the Upsilon(4S) resonance. Based on this dataset the hadronically tagged analysis of the rare decay B^+ -> l^+ nu gamma determined an upper limit of BR(B^+ -> l^+ nu gamma) < 3.5 x 10^-6. For the upcoming Belle II experiment new analysis tools have been developed which also allow to re-analyze the Belle data and make it possible to do a first measurement of this decay.
Conference	Epiphany 2018