A sample of 25000 Z0 → τ+τ− events collected by the DELPHI experiment at LEP in 1991 and 1992 is used to measure the leptonic branching fractions of the τ lepton. The results are View the MathML source% and View the MathML source %. The ratio of the muon and electron couplings to the weak charged current is measured to be View the MathML source, satisfying e-μ universality. The leptonic branching fraction corrected to the value for a massless lepton, assuming e-μ universality, is found to be View the MathML source%.
A measurement of the τ leptonic branching fractions / Delphi, Collaboration; Abreu, P.; Adam, W.; Canale, Vincenzo. - In: PHYSICS LETTERS. SECTION B. - ISSN 0370-2693. - STAMPA. - 357:(1995), pp. 715-724. [10.1016/0370-2693(95)00987-V]
A measurement of the τ leptonic branching fractions
CANALE, VINCENZO
1995
Abstract
A sample of 25000 Z0 → τ+τ− events collected by the DELPHI experiment at LEP in 1991 and 1992 is used to measure the leptonic branching fractions of the τ lepton. The results are View the MathML source% and View the MathML source %. The ratio of the muon and electron couplings to the weak charged current is measured to be View the MathML source, satisfying e-μ universality. The leptonic branching fraction corrected to the value for a massless lepton, assuming e-μ universality, is found to be View the MathML source%.I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
