Measurements of αs in e +e − annihilation at √ s=53.3 GeV and 59.5 GeV

I Adachi,Y Kato,A Maruyama,H Hayashii,A Sugiyama,N Fujiwara,K Ukai,K Muramatsu,M Doser,S Yamamoto,T Tauchi,T Takahashi,Y Yoake,J Fujimoto,I Levine,Y Watanabe,O Nitoh,D Koltick,N Iida,T Nagira,K Iwashiro,A Imanishi,N Kusuki,B Howell,T Tsukamoto,K Maruyama,R Itoh,K Nagai,M Yamauchi,S Uno,A Yamamoto,R Sugahara,M Kobayashi,H Ozaki,T Ishii,R Enomoto,Y Kayahara,R Kajikawa,T Kishida,H Kichimi,T Okusawa,H Takamure,S Onodera,F Ochiai,Y Teramoto,H Aihara,K Takahashi,S Kawabata,S Noguchi,T Kamae,A Miyamoto,T Fujii,K Fujiwara,S Higashi,H Iwasaki,A Shirahashi,A Shimonaka,S Yamashita,K Shimozawa,Hirofumi Fujii ,Katsuyoshi Matsushita ,Shingo Suzuki ,Seiya Kato ,Hiroshi Okuno ,Hirokazu Ikeda ,Takeshi Matsuda ,Keisuke Fujii

doi:10.1016/0370-2693(89)90969-6

Measurements of αs in e +e − annihilation at √ s=53.3 GeV and 59.5 GeV

I Adachi, Y Kato + Show 65 more

https://doi.org/10.1016/0370-2693(89)90969-6

Copy DOI

Journal: Physics Letters B	Publication Date: Aug 1, 1989
Citations: 27

Affiliation: Nagoya University, Tokyo Institute of Technology, Nara Women's University, The University of Tokyo, Tokyo University of Agriculture and Technology, High Energy Accelerator Research Organization, Tezukayama University, Osaka City University

#Lund String Fragmentation Model #Measurements Of Αs + Show 8 more

Abstract
Full-Text PDF
Similar Papers

Abstract

We studied the energy-energy correlation (EEC) and its asymmetry (AEEC) using e +e − hadronic annihilation events obtained at √ s=53.3 GeV and 59.5 GeV with the TOPAZ detector at the TRISTAN collider. We used a Monte Carlo simulation combined with the QCD matrix elements by Gottschalk and Shatz and the Lund string fragmentation model. By comparing the experimental data with simulated events, we determined the strong coupling constant α s at both energies. The results are 0.129±0.007 (stat) ±0.010 (syst) at √ s=53.3 GeV and 0.122±0.008 (stat) ±0.010 (syst) at 59.5 GeV.

Full Text