We report a measurement of R(b) = GAMMA(bbBAR)GAMMA(had) from Z --> qqBAR events at LEP. Z --> bbBAR events are identified using a multidimensional analysis based on a neural network approach. We obtain 60% sample purity with an efficiency of 35%. Our measured value of R(b) is 0.222 +/- 0.003 +/- 0.007.

Measurement of Gamma-b(b)over-bar/gamma(had) From Hadronic Decays of the Z / O. ADRIANI, M. AGUILARBENITEZ, S. AHLEN, J. ALCARAZ, A. ALOISIO, G. ALVERSON, M. G. ALVIGGI, G. AMBROSI, Q. AN, H. ANDERHUB, A. L. ANDERSON, V. P. ANDREEV, L. ANTONOV, D. ANTREASYAN, P. ARCE, A. AREFIEV, A. ATAMANCHUK, T. AZEMOON, T. AZIZ, P. V. K., et al.. - In: PHYSICS LETTERS. SECTION B. - ISSN 0370-2693. - STAMPA. - 307:(1993), pp. 237-246. [10.1016/0370-2693(93)90214-3]

Measurement of Gamma-b(b)over-bar/gamma(had) From Hadronic Decays of the Z

ADRIANI, OSCAR;D'ALESSANDRO, RAFFAELLO;M. LENTI;
1993

Abstract

We report a measurement of R(b) = GAMMA(bbBAR)GAMMA(had) from Z --> qqBAR events at LEP. Z --> bbBAR events are identified using a multidimensional analysis based on a neural network approach. We obtain 60% sample purity with an efficiency of 35%. Our measured value of R(b) is 0.222 +/- 0.003 +/- 0.007.
1993
307
237
246
O. ADRIANI;M. AGUILARBENITEZ;S. AHLEN;J. ALCARAZ;A. ALOISIO;G. ALVERSON;M. G. ALVIGGI;G. AMBROSI;Q. AN;H. ANDERHUB;A. L. ANDERSON;V. P. AN...espandi
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Utilizza questo identificatore per citare o creare un link a questa risorsa: https://hdl.handle.net/2158/772753
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