A STUDY OF CHARGED D-ASTERISK PRODUCTION IN E- ANNIHILATION AT AN AVERAGE CENTER-OF-MASS ENERGY OF 58-GEV( E)

Authors
HINODE F ABE K AMAKO K ARAI Y ARIMA T ASANO Y CHIBA M CHIBA Y DAIGO M FUKAWA M FUKUSHIMA Y HABA J HEMMI Y HIGUCHI M HIROSE T HOMMA Y HOSHI Y HOSODA N ISHIHARA N KANDA N KANATANI E KANEMATSU N KANZAKI J KIKUCHI R KORHONEN TT KONDO T KRUGER AE KURASHIGE H MACNAUGHTON J MATSUI T MIURA M MIYAKE K MORI S NAGASHIMA Y NAKAMURA T NAKANO I ODAKA S OGAWA K OHAMA T OHSUGI T OKAMOTO A ONO A OYAMA T OHYAMA H SAKAMOTO H SAKUDA M SATO M SATO N SHIODEN M SHIRAI J SHIRAKATA M SUMIYOSHI T SUZUKI A TAKADA Y TAKAKI H TAKASAKI F TAKITA M TAMURA N TOBIMATSU K TSUBOYAMA T UEHARA S UNNO Y UTSUMI M WATASE Y YABUKI F YAMADA Y YAMAGATA T YONEZAWA Y YOSHIDA H
Citation
F. Hinode et al., A STUDY OF CHARGED D-ASTERISK PRODUCTION IN E- ANNIHILATION AT AN AVERAGE CENTER-OF-MASS ENERGY OF 58-GEV( E), Physics letters. Section B, 313(1-2), 1993, pp. 245-252
Citations number
36
Categorie Soggetti
Physics
Journal title
Physics letters. Section B → ACNP
ISSN journal
03702693
Volume
313
Issue
1-2
Year of publication
1993
Pages
245 - 252
Database
ISI
SICI code
0370-2693(1993)313:1-2<245:ASOCDP>2.0.ZU;2-Q
Abstract
We have studied the production of charged D mesons in e+e- annihilati on at an average center-of-mass energy of 58.0 GeV. Charged D mesons were identified using two independent methods; the mass-difference met hod and the detection of the low transverse-momentum pion. The forward -backward asymmetry of the charm quark production was measured to be A (c) = -0.61 +/- 0.13(stat.) +/- 0.08(syst.). The cross-section of incl usive D production was found to be sigma(e+e- --> D*+/- + X) = 24.5 /- 5.3 (stat.) +/- 3.0(syst.) pb. If we assume the standard model pred iction for the charm quark production, we obtain the branching ratio f or the charm quark to produce a charged D meson to be Br(c --> D*+ X) = (22 +/- 5 (stat.) +/- 3 (syst.))%.