Lifetime Difference in Bs mixing: Standard Model and beyond
Abstract
We present a calculation of 1/m2b corrections to the lifetime differences of Bs mesons s in the heavy-quark expansion. We find that they are small to significantly affect s and present the result for lifetime difference including non-perturbative 1/mb and 1/mb2 corrections. We also analyze the generic B = 1 New Physics contributions to s and provide several examples.
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