Radiative tau production and decay

We have studied the muon decay channel of the {tau} lepton with the presence of a photon in {ital e}{sup +}{ital e}{sup {minus}} annihilation data at {ital E}{sub c.m.}=29 GeV from the Mark II detector. Included in this study is the first direct measurement of radiative {tau} decay. We find the rati...

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Veröffentlicht in:	Physical review. D, Particles and fields Particles and fields, 1990-04, Vol.41 (7), p.2339-2342
Hauptverfasser:	Wu, DY, Hayes, K, Perl, ML, Barklow, T, Boyarski, A, Burchat, PR, Burke, DL, Dorfan, JM, Feldman, GJ, Gladney, L, Hanson, G, Hollebeek, RJ, Innes, WR, Jaros, JA, Karlen, D, Klein, SR, Lankford, AJ, Larsen, RR, LeClaire, BW, Lockyer, NS, Lüth, V, V, Ong, RA, Richter, B, Riles, K, Yelton, JM, Abrams, G, Amidei, D, Baden, AR, Boyer, J, Butler, F, Gidal, G, Gold, MS, Goldhaber, G, Golding, L, Haggerty, J, Herrup, D, Juricic, I, I, Kadyk, JA, Levi, ME, Nelson, ME, Rowson, PC, Schellman, H, Schmidke, WB, Sheldon, PD, Trilling, GH, Wood, DR, Schaad, T
Format:	Artikel
Sprache:	eng
Schlagworte:	645102 > High Energy Physics-- Particle Interactions & Properties-Experimental-- Weak Interactions & Properties 645400 > High Energy Physics-- Field Theory ANNIHILATION ANTILEPTONS ANTIMATTER ANTINEUTRINOS ANTIPARTICLES BASIC INTERACTIONS BRANCHING RATIO BREMSSTRAHLUNG ELECTRODYNAMICS ELECTROMAGNETIC INTERACTIONS ELECTROMAGNETIC RADIATION ELECTRON-POSITRON INTERACTIONS ELEMENTARY PARTICLES ENERGY RANGE FERMIONS FIELD THEORIES GEV RANGE GEV RANGE 10-100 HEAVY LEPTONS INTERACTIONS LEPTON-LEPTON INTERACTIONS LEPTONS MASSLESS PARTICLES MONTE CARLO METHOD MUONS NEUTRINOS PARTICLE INTERACTIONS PARTICLE PRODUCTION PEP STORAGE RINGS PHYSICS OF ELEMENTARY PARTICLES AND FIELDS POSTULATED PARTICLES QUANTUM ELECTRODYNAMICS QUANTUM FIELD THEORY RADIATIONS RADIATIVE DECAY STORAGE RINGS 645101 > High Energy Physics-- Particle Interactions & Properties-Experimental-- Electromagnetic Interactions & Properties TAU PARTICLES
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Zusammenfassung:	We have studied the muon decay channel of the {tau} lepton with the presence of a photon in {ital e}{sup +}{ital e}{sup {minus}} annihilation data at {ital E}{sub c.m.}=29 GeV from the Mark II detector. Included in this study is the first direct measurement of radiative {tau} decay. We find the ratio of the measured {tau}{r arrow}{mu}{gamma}{nu}{bar {nu}} branching fraction to the expected value from QED to be 1.03{plus minus}0.42.
ISSN:	0556-2821 1089-4918
DOI:	10.1103/PhysRevD.41.2339