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Title

Measurement of Branching Fractions of τ Hadronic Decays

CollaborationWith : Achard, Pablo / Bourquin, Maurice / Braccini, Saverio / Chamizo Llatas, Maria / Deglon, Patrick / Delmeire, Evelyne / Echenard, Bertrand / Extermann, Pierre / Field, John / Kienzle, Maria-Novella / Malgeri, Luca / Natale, Sonia / Pohl, Martin / Straessner, Arno
Publication CERN: CERN (Organisation européenne pour la recherche nucléaire), 2003
Collection CERN LEP ; L3
Description 17 p.
Abstract Using data collected with the L3 detector at LEP at the Z peak, the branching fractions of the τ lepton into the hadronic final states, h-nπ0v (n = 0; 1; 2;≥ 3) and h-h+h-nπ0v (n=0, 1,≥2), where h± denotes a charged hadron, are measured to be: B(h-v) = 12.09 ± 0.12 ± 0.10 %; B(h-π0v) = 25.89 ± 0.16 ± 0.10 %; B(h-2 π0v) = 9.10 ± 0.15 ± 0.13 %; B(h-≥ 3π0v) = 1.35 ± 0.11 ± 0.11 %; B(h-h+h-v) = 9.15 ± 0.11 ± 0.11 % B(h-h+h-π0v) = 4.81 ± 0.12 ± 0.08 %; B(h-h+h-≥2π0v) = 0.66 ± 0.08 ± 0.04 % . The first uncertainty is statistical and the second systematic. The accuracy of these measurements is comparable to that of the current world average.
Keywords Particle PhysicsExperiment
Note Submitted to the European Physics Journal
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Other version: http://cds.cern.ch/record/836612?ln=fr
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L3 COLLABORATION. Measurement of Branching Fractions of τ Hadronic Decays. 2003 https://archive-ouverte.unige.ch/unige:42656

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Deposited on : 2014-12-05

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