Measurement of branching fractions for the inclusive Cabibbo-favored ~K*0(892) and Cabibbo-suppressed K*0(892) decays of neutral and charged D mesons

TL;DR

This paper measures the branching fractions of specific D meson decays involving K*0(892) mesons, providing new experimental data on these decay modes at a center-of-mass energy of 3.773 GeV.

Contribution

It presents the first measurements of inclusive branching fractions for both Cabibbo-favored and suppressed D meson decays involving K*0(892), including upper limits for certain decay modes.

Findings

BF(D0 -> ~K*0X) = (8.7 +/- 4.0 +/- 1.2)%

BF(D+ -> ~K*0X) = (23.2 +/- 4.5 +/- 3.0)%

BF(D0 -> K*0X) < 6.6% at 90% C.L.

Abstract

The branching fractions for the inclusive Cabibbo-favored ~K*0 and Cabibbo-suppressed K*0 decays of D mesons are measured based on a data sample of 33 pb-1 collected at and around the center-of-mass energy of 3.773 GeV with the BES-II detector at the BEPC collider. The branching fractions for the decays D+(0) -> ~K*0(892)X and D0 -> K*0(892)X are determined to be BF(D0 -> \~K*0X) = (8.7 +/- 4.0 +/- 1.2)%, BF(D+ -> ~K*0X) = (23.2 +/- 4.5 +/- 3.0)% and BF(D0 -> K*0X) = (2.8 +/- 1.2 +/- 0.4)%. An upper limit on the branching fraction at 90% C.L. for the decay D+ -> K*0(892)X is set to be BF(D+ -> K*0X) < 6.6%.