Bound on dissipative effects from semileptonic neutral B-meson decays

Abstract

Abstract The semileptonic decay asymmetry $$\mathcal {A}_{{\Delta }m}$$ A Δ m is studied within the open quantum systems approach to the physics of the neutral meson $$B^0$$ B 0 – $$\overline{B^0}$$ B 0 ¯ system: this extended treatment takes into account possible non-standard, dissipative effects induced by the presence of an external environment. A bound on these effects is provided through the analysis of available experimental data from the Belle Collaboration.