CERN Accelerating science

Preprint
Report number	CERN-OPEN-99-305 ; CERN-ALEPH-98-022
Title	Production of $D_{s1}^{\pm}$ and $D_{s2} ^{*\pm}$ mesons in hadronic Z decays
Author(s)	Buskulic, Damir ; Rohne, E
Affiliation	(CERN)
Publication	1998
Collaboration	ALEPH Collaboration
Imprint	6 Mar 1998
Number of pages	16
Presented at	International Europhysics Conference on High-Energy Physics, Tampere, Finland, 15 - 21 Jul 1999
Presented at	29th International Conference on High-energy Physics, Vancouver, Canada, 23 - 29 Jul 1998
Subject category	Particle Physics - Experiment
Accelerator/Facility, Experiment	CERN LEP ; ALEPH
Keywords	D(s1)+ ; D(s1)- ; D(s2)+ ; D(s2)-
Abstract	In a sample of 4.1 million hadronic Z decays recorded in the years 1991 to 1995 Ds1+- and Ds2*+- mesons are observed in the decay channels Ds1+- -> D*0 K+, Ds1+- -> D*+ K0s, and Ds2*+- -> D0 K+. The production rates for XE>0.3 in hadronic decays are estimated. The production rates of Ds1+- and Ds2*+- from charm quark fragmentation and from decays of b hadrons are derived from the observation in c and b enriched event samples. The Monte Carlo is used to subtract the remaining fraction of Ds** mesons from other flavours and to extrapolate to the full energy region.
Submitted by	[email protected]