Two measurements of bbhad are presented. Both measurements use 250000Z decays taken with the DELPHI detector in 1991 and rely mainly on the precision of the microvertex detector. One tagging method is as simple as possible so that background rates can be reliably predicted by simulation. The other one uses a more involved tagging technique and reduces the dependence on simulation as much as possible. Combining both results, bbhad is found to be 0.2209±0.0041(stat.)±0.0042(syst.)±0.0018 cc .
Measurement of the $$\Gamma _{b\bar b} /\Gamma _{had} $$ branching ratio of thez by double hemisphere tagging / Delphi, Collaboration; Abreu, P.; Adam, W.; Canale, Vincenzo. - In: ZEITSCHRIFT FÜR PHYSIK. C, PARTICLES AND FIELDS. - ISSN 0170-9739. - STAMPA. - 65:(1995), pp. 555-568. [10.1007/BF01578666]
Measurement of the $$\Gamma _{b\bar b} /\Gamma _{had} $$ branching ratio of thez by double hemisphere tagging
CANALE, VINCENZO
1995
Abstract
Two measurements of bbhad are presented. Both measurements use 250000Z decays taken with the DELPHI detector in 1991 and rely mainly on the precision of the microvertex detector. One tagging method is as simple as possible so that background rates can be reliably predicted by simulation. The other one uses a more involved tagging technique and reduces the dependence on simulation as much as possible. Combining both results, bbhad is found to be 0.2209±0.0041(stat.)±0.0042(syst.)±0.0018 cc .I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
