MEASUREMENT OF GAMMA-B(B)OVER-BAR/GAMMA(HAD) FROM HADRONIC DECAYS OF THE Z

We report a measurement of Rb = ΓbbΓhad from Z → qq events at LEP. Z → bb 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 Rb is 0.222±0.003±0.007. © 1993.

Bibliographic Details
Main Authors: Adriani, O, Aguilarbenitez, M, Ahlen, S, Alcaraz, J, Aloisio, A, Alverson, G, Alviggi, M, Ambrosi, G, An, Q, Anderhub, H, Anderson, A, Andreev, V, Antonov, L, Antreasyan, D, Arce, P, Arefiev, A, Atamanchuk, A, Azemoon, T, Aziz, T, Baba, P, Bachmann, S, Bagnaia, P, Bakken, J, Baksay, L, Ball, R
Format: Journal article
Published: 1993