Production of Ds** mesons in hadronic Z decays
High Energy Physics - Experiment
2012-08-27 v1
Abstract
The production rates of the orbitally excited Ds** mesons, Ds1 and Ds2*, are measured with the 4.1 million hadronic Z decays recorded by the ALEPH detector during 1991--1995. The Ds** mesons are reconstructed in the decay modes Ds1+ -> D*+ K0, Ds1+ -> D*0 K+ and Ds2*+ -> D0 K+. The production rate of the Ds1 is measured to be n(Z->Ds1+-)=(0.52+-0.09+-0.06)%, under the assumption that the two considered decay modes of the Ds1 saturate the branching ratio. The production rate of the Ds2* is determined to be n(Z->Ds2*+-)=(0.83+-0.29+0.07-0.13)%, assuming that the branching fraction of the decay Ds2*+ -> D0 K+ is 45%. The production rates in Z->cc and Z->bbar decays are measured separately
Cite
@article{arxiv.hep-ex/0112010,
title = {Production of Ds** mesons in hadronic Z decays},
author = {ALEPH Collaboration},
journal= {arXiv preprint arXiv:hep-ex/0112010},
year = {2012}
}
Comments
14 pages, 5 figures