Question

The B−(negative) meson is the lightest particle consisting of a b quark and u antiquark. Which type of interaction causes its decay.?Describe with explanation its decay chain.

Answer 1

The type of interaction that causes its decay is electroweak. The decay chain:

$$B^-\rightarrow D^0\pi^-.$$

The B-negative meson decays into neutral D and negative π meson (pion).

According to Browder and Honscheid (2008), "there may be multiple combinations in a given decay chain".

Reference:

Thomas E. Browder, Klaus Honscheid (2008). B Mesons