2024/09/25 by Monteil, Stéphane, Roehrig, Lars
paper · doi:10.17181/s0gpx-vsc35
This technical note reports an academic exercise to assess the electromagnetic (EM) calorimeter energy resolution performance that would be needed in order to separate candidates of the radiative quark transitions b → s γ and b→ d γ. The specific measurement considered in this work, the relative branching fractions of the decays B0 → K*0(892)γ and B0s → K*0(892) γ can only be performed with a stochastic term of the EM well-below 10 %.