Speaker
Jorge Martinez Ortega
Description
The Heavy Quark Expansion theory predicts that the ratio among the B^0 and B_s lifetime to be very close to 1. The B^0 lifetime has been measured with a precision around 1%, so having a precision measurement of Bs lifetime can be a test of this framework. I will describe a method to measure the Bs lifetime using the semileptonic channel $B^{0}_s\rightarrow D^{+}_s\mu X$ with data collected by the D0 collaboration.