Belle II's first measurement of B→K*(892)γ decays yields branching fractions, CP asymmetries, and an isospin asymmetry consistent with the Standard Model and previous experiments.
CP asymmetry, branching ratios and isospin breaking effects of B -> K* gamma with the perturbative QCD approach
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abstract
The radiative B -> K* gamma mode is caused by a penguin operator which is a quantum correction. Thus this mode may be useful in the search for physics beyond the standard model. In this paper, we compute the branching ratio, direct CP asymmetry, and isospin breaking effects within the Standard Model in the framework perturbative QCD, and discuss how new physics might show up in this decay.
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Measurement of $B \to K{}^{*}(892)\gamma$ decays at Belle II
Belle II's first measurement of B→K*(892)γ decays yields branching fractions, CP asymmetries, and an isospin asymmetry consistent with the Standard Model and previous experiments.