Measurement of the cross-section and forward-backward charge asymmetry for the b and c-quark in $e^+e^-$ annihilation with inclusive muons at $\sqrt{s} = 58$ GeV

Y Inoue,K Kaneyuki,K Nakabayashi,Y Teramoto,T Tsukamoto,H Mamada,S Uno,R Kajikawa,T Okusawa,B Howell,R Itoh,Y Watanabe,S Noguchi,A Sugiyama,M Yamauchi,K Miyabayashi,F Ochiai,E Nakano,H Kichimi,I Adachi,A Miyamoto,O Nitoh,K Emi,H Hayashii,M Iwasaki,Hirofumi Fujii ,K Muramatsu,T Takahashi,S Kawabata,K Nagai,H Sugiyama,Kenji Abe ,Mitsuhiro Nakamura ,A Ochi,M Aoki,K Takahashi,H Iwasaki,R Enomoto,T Tauchi,N Fujiwara,N Ohishi,Seiya Kato ,Keisuke Fujii ,Y Ohnishi,A Yamamoto,Masashi Akiyama ,Tomohiro Abe ,M Kobayashi,I Levine,H Okuno,T Tanimori,K Adachi,Hiroyuki Hirano ,Shingo Suzuki ,Yasuhiro Ohshima ,N Iida,S Itami,T Tsumura,Toshihiko Fujii ,J Fujimoto,E I Shibata ,D Koltick,M Tomoto,Hiroshi Ikeda

doi:10.1007/s100520000541

Measurement of the cross-section and forward-backward charge asymmetry for the b and c-quark in $e^+e^-$ annihilation with inclusive muons at $\sqrt{s} = 58$ GeV

Y Inoue, K Kaneyuki + Show 62 more

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https://doi.org/10.1007/s100520000541

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Journal: The European Physical Journal C	Publication Date: Dec 1, 2000
Citations: 8

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

#Forward-backward Asymmetry #TOPAZ Detector + Show 8 more

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Abstract

We have studied inclusive muon events using all the data collected by the TOPAZ detector at sqrt(s)=58 GeV with an integrated luminosity of 273pb-1. From 1328 inclusive muon events, we measured the ratio R_qq of the cross section for qq-bar production to the total hadronic cross section and forward-backward asymmetry A^q_FB for b and c quarks. The obtained results are R_bb = 0.13+-0.02(stat)+-0.01(syst), R_cc = 0.36+-0.05(stat)+-0.05(syst), A^b_FB = -0.20+-0.16(stat)+-0.01(syst) and A^c_FB = -0.17+-0.14(stat)+-0.02(syst), in fair agreement with a prediction of the standard model.

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