Scalar leptoquark effects on $$B \rightarrow \mu \bar{\nu }$$ B→μν¯ decay

Abstract

Abstract Purely leptonic B meson decays provide unique probes for physics Beyond the Standard Model. We study the impact of a scalar leptoquark, $$S_1$$ S1 , on $$B \rightarrow \mu \bar{\nu }$$ B→μν¯ decay. We find that, for $$m_{S_1}\sim 1\ \hbox {TeV}$$ mS1∼1TeV , the $$S_1$$ S1 leptoquark can modify the $$B \rightarrow \mu \bar{\nu }$$ B→μν¯ rate significantly. Such a leptoquark can in principle also alter the $$B \rightarrow \tau \bar{\nu }$$ B→τν¯ rate. However, current searches from LHC and low energy physics provide some constraints on the parameter space.