Investigation of P-wave scalar and S-wave pseudo-scalar charmonia semileptonic transitions to the Ds(D) meson in QCD

Abstract

In this work, the semileptonic decays of the scalar charmonium state Xc0 and the pseudo scalar charmonia states ηc(1s) and ηc(2s) into Ds and D mesons are analyzed. The form factors of the transitions Xc0 → Ds(D)_ν and ηc(1s, 2s) → Ds(D)_ν are calculated within the framework of the threepoint QCD sum rules. The results of the form factors are used to estimate the decay widths of the charmonia states into Ds(D)eν¯e and Ds(D)μν¯μ.