Speaker
Anastasiia Kozachuk
(Lomonosov Moscow State University)
Description
We analyze constraints on anomalous tWb couplings that parameterize the possible contribution of New Physics to the weak tWb vertex. We take into account indirect constraints obtained from B-physics ($B\to X_s \gamma$, $B\to X_s l^+l^-$, $B$-$\bar B$ oscillations) and direct constraints from the t-channel single top quark production. In two-dimensional scenarios when different pairs of the anomalous couplings can vary whereas others are set to their SM values, the indirect and direct constraints are shown to nicely agree with each other. Combining both types of constraints narrows down the allowed ranges of the anomalous couplings.
Authors
Anastasiia Kozachuk
(Lomonosov Moscow State University)
Dmitri Melikhov
(HEPHY)
