D-ASTERISK+ - INCLUSIVE PRODUCTION IN 2-PHOTON PROCESS AT ROOT-S=58 GEV IN TRISTAN/

Authors
OHYAMA H ABE K AMAKO K ARAI Y ASANO Y CHIBA M CHIBA Y DAIGO M FUKAWA M FUKUSHIMA Y HABA J HAMASAKI H HANAI H HEMMI Y HIGUCHI M HIROSE T HOMMA Y ISHIHARA N IWATA Y KANZAKI J KIKUCHI R KONDO T KORHONEN TT KURASHIGE H MATSUDA EK MATSUI T MIYAKE K MORI S NAGASHIMA Y NAKAGAWA Y NAKAMURA T NAKANO I ODAKA S OGAWA K OHAMA T OHSUGI T OKABE K OKAMOTO A ONO A PENNANEN J SAKAMOTO H SAKUDA M SATO M SATO N SHIODEN M SHIRAI J SUMIYOSHI T TAKADA Y TAKASAKI F TAKITA M TAMURA N TATSUMI D TOBIMATSU K TSUBOYAMA T UEHARA S UNNO Y WATANABE T WATASE Y YABUKI F YAMADA Y YAMAGATA T YONEZAWA Y YOSHIDA H YUSA K
Citation
H. Ohyama et al., D-ASTERISK+ - INCLUSIVE PRODUCTION IN 2-PHOTON PROCESS AT ROOT-S=58 GEV IN TRISTAN/, Zeitschrift fur Physik. C, Particles and fields, 75(2), 1997, pp. 209-214
Citations number
38
Categorie Soggetti
Physics, Particles & Fields
Journal title
Zeitschrift fur Physik. C, Particles and fields → ACNP
ISSN journal
01709739
Volume
75
Issue
2
Year of publication
1997
Pages
209 - 214
Database
ISI
SICI code
0170-9739(1997)75:2<209:D-IPI2>2.0.ZU;2-1
Abstract
Using the VENUS detector at TRISTAN we have investigated the charm-qua rk production by detecting D(+/-) mesons in the two-photon process of e(+)e(-) collisions. The study has confirmed that the charm-quark pro duction rate is larger than that predicted from direct c (c) over bar production alone. The distribution of the transverse momentum of the D (+/-) mesons and the forward energy flow associated with the D*(+/-) production suggest that the main part of the observed excess comes fro m the contribution of a resolved photon process.