Measurement of Inclusive Production of eta, eta' and phi Mesons in D0, D+ and Ds+ Decays

TL;DR

This paper reports measurements of how often charm mesons decay into eta, eta', and phi mesons, revealing higher production rates in Ds+ decays, which aids in understanding Bs meson production.

Contribution

It provides the first detailed measurements of inclusive branching fractions of charm mesons into eta, eta', and phi mesons using CLEO-c data, highlighting differences among D0, D+, and Ds+ decays.

Findings

Higher production rates of eta, eta', and phi in Ds+ decays.

Phi production in Ds+ decays is 15 times greater than in D0 and D+ decays.

Results can be used to measure Bs yields at various colliders.

Abstract

We measure the inclusive branching fractions of charm mesons into three mesons with large s-anti-s content, namely the eta, eta' and phi. Data were accumulated with the CLEO-c detector. For D0 and D+ rates, we use 281/pb taken on the psi(3770) resonance, and for Ds+ rates, we use 195/pb taken at 4170 MeV. We find that the production rates of these particles are larger in Ds+ decays than in D0 and D+ decays. The phi rate, in particular, is 15 times greater. These branching fractions can be used to measure Bs yields either at the Upsilon(5S) resonance or at hadron colliders.