MEASUREMENT OF CHARM PRODUCTION IN 2-PHOTON PROCESSES USING INCLUSIVELEPTON EVENTS AT TRISTAN

Authors
ASO T MIYATA H SASAKI T MIYANO K NAKAJIMA N OHKUBO K OYOSHI M SATO M SHIRAI M TAKASHIMIZU N YAMASHITA Y ABE K FUJII Y KURIHARA Y LEE MH LIU F MAKI A NOZAKI T OMORI T SAGAWA H SAKAI Y SUGIMOTO Y TAKAIWA Y TERADA S KIRK P WANG TJ ABASHIAN A GOTOW K PIILONEN L CHOI SK ROSENFELD C ZHENG LY BREEDON RE KO W LANDER RL ROWE J SMITH JR KANDA S OLSEN SL UENO K TANAKA R KAJINO F BEHARI S FUJIMOTO H KOBAYASHI S MURAKAMI A SAHU SK YANG M MATSUMOTO S SCHNETZER S BODEK A KIM BJ KANG JS KIM DY LEE KB AHN HS KIM SK MYUNG SS SON D
Citation
T. Aso et al., MEASUREMENT OF CHARM PRODUCTION IN 2-PHOTON PROCESSES USING INCLUSIVELEPTON EVENTS AT TRISTAN, Physics letters. Section B, 363(4), 1995, pp. 249-258
Citations number
33
Categorie Soggetti
Physics
Journal title
Physics letters. Section B → ACNP
ISSN journal
03702693
Volume
363
Issue
4
Year of publication
1995
Pages
249 - 258
Database
ISI
SICI code
0370-2693(1995)363:4<249:MOCPI2>2.0.ZU;2-1
Abstract
Measurements of open charm production in photon-photon collisions made with the AMY detector at TRISTAN are reported. Charmed hadrons were i dentified by detecting the high momentum muons or electrons from their semileptonic decays. The data sample corresponds to an integrated lum inosity of 275 pb(-1) at an average center of mass energy of 58 GeV. R esults are presented in the form of cross sections of inclusive lepton s from charm for both muons and electrons. The measured cross section is 1.8 standard deviations higher than theoretical predictions based o n the direct and photon-gluon fusion process, where the mass of charm quark is assumed to be 1.6 GeV.