A new measurement of the forward-backward asymmetry in Z --> bbBAR decays is presented. Hadrons from b decays are tagged using their long lifetimes. The b quark charge and direction are reconstructed with a hemisphere charge algorithm. The asymmetry and reconstructed b hemisphere charge are measured in the 69 pb-1 of data collected by ALEPH during 1991, 1992 and 1993. They are used to extract sin2theta(w)eff, which is determined to be 0.2315 +/- 0.0016 (stat.) +/- 0.0009 (syst.), corresponding to an A(FB)b of 0.00992 +/- 0.0084 (stat.) +/- 0.0046 (stat.).
Titolo: | A MEASUREMENT OF A(FB)(B) IN LIFETIME TAGGED HEAVY FLAVOR Z DECAYS |
Autori: | |
Data di pubblicazione: | 1994 |
Rivista: | |
Digital Object Identifier (DOI): | http://dx.doi.org/10.1016/0370-2693(94)91564-4 |
Handle: | http://hdl.handle.net/11384/7256 |
Appare nelle tipologie: | 1.1 Articolo in rivista |
File in questo prodotto:
Non ci sono file associati a questo prodotto.
I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.