The Bc meson, composed of an anti-b and a c quark, has a lifetime of 0.46 picoseconds, significantly shorter than the ~1.6 picoseconds lifetime of B+ and B- mesons. This discrepancy is primarily attributed to the greater number of available decay channels for the Bc meson, with the decay dominated by the charm quark, which accounts for 70% of its decay processes. The Bc can decay through three distinct mechanisms: the b quark decay, the c quark decay, or annihilation, whereas the B0 meson has only one decay pathway. The shorter lifetime of the Bc meson is a result of these factors rather than a mere coincidence.
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