Measurements of branching fractions for inclusive K0~/K0 and K*(892)+- decays of neutral and charged D mesons

TL;DR

This study measures the inclusive branching fractions of K0/K0 and K*(892)+- decays in D mesons using BES-II data, providing new experimental values and upper limits for these decay modes.

Contribution

It provides the first measurements of inclusive K0/K0 and K*(892)+- decay branching fractions for D0 and D+ mesons with improved precision.

Findings

Measured BF(D0 to K0~/K0 X) = (47.6 ± 4.8 ± 3.0)%

Measured BF(D+ to K0~/K0 X) = (60.5 ± 5.5 ± 3.3)%

Set upper limits for BF(D0 to K*+ X) < 3.6% and BF(D+ to K*+ X) < 20.3% at 90% CL

Abstract

Using the data sample of about 33 pb-1 collected at and around 3.773 GeV with the BES-II detector at the BEPC collider, we have studied inclusive K0~/K0 and K*(892)+- decays of D0 and D+ mesons. The branching fractions for the inclusive K0~/K0 and K*(892)- decays are measured to be BF(D0 to K0~/K0 X)=(47.6+-4.8+-3.0)%, BF(D+ to K0~/K0 X)=(60.5+-5.5+-3.3)%, BF(D0 to K*- X)=(15.3+- 8.3+- 1.9)% and BF(D+ to K*- X)=(5.7+- 5.2+- 0.7)%. The upper limits of the branching fractions for the inclusive K*(892)+ decays are set to be BF(D0 to K*+ X)<3.6% and BF(D+ to K*+ X) <20.3% at 90% confidence level.