Global fits of $b\to d\,\ell^+\ell^-$
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Abstract
We conduct a model-independent analysis of processes involving $|\Delta b|=|\Delta d|=1$ transitions, aiming to test the standard model and explore flavor patterns of new physics. Exploiting the current data from $B^+ \to \pi^+ \,\mu^+\mu^-$, $B^0_s\to \bar{K}^{*0}\, \mu^+\mu^-$, $B^0\to\mu^+\mu^-$, and radiative $B \to X_d \,\gamma$ decays, we derive constraints on Wilson coefficients through global fits. The fit results are consistent with the standard model but show significant potential for new physics contributions at experimental facilities like LHCb and Belle II, or a future $e^+ e^-$ collider.
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Copyright owned by the author(s) under the term of the Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International License.
Copyright owned by the author(s) under the term of the Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International License.