Influence of threshold effects induced by charmed meson rescattering

K−χc0 decay from charmed meson rescattering

We study the process B− → Kχc0 considering intermediate charmed meson rescattering effects. For this decay mode the naive factorization ansatz would predict a vanishing amplitude. We estimate contributions from the D(∗) s D (∗) → Kχc0 rescattering amplitudes, and compare the result with recent experimental measurements. We find that rescattering effects are able to produce a large branching rat...

The Charmed Strange Meson System

Motivated by the recent surprising discovery of two new meson states with cs̄ quark content but unexpectedly low masses and narrow total decay widths, we work out, in a nonrelativistic potential-model approach developed already some two decades ago, the predictions for the energy levels of the corresponding charm–anti-strange quark bound states. In spite of the fact that this simple quark model ...

Measurement of Charmed Meson Lifetimes with Belle

The lifetimes of charmed mesons have been measured using 2.75 fb of data collected with the Belle detector at KEKB. Each candidate is fully reconstructed to identify the flavor of the charmed meson. The lifetimes are measured to be τ(D) = (414.8±3.8±3.4) fs, τ(D) = (1040 −22 ± 18) fs and τ(D + s ) = (479 +17 −16 +6 −8) fs, where the first error is statistical and the second error is systematic....

Observation of a new charmed strange meson.

Charmed Meson Scattering from Lattice QCD