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Title: Measurement of anomalous muon pair production in electron-positron annihilations

Abstract

We have observed 16 events of the type ..mu../sup +/..mu../sup -/ + (missing energy and momentum) from e/sup +/e/sup -/ annihilations at center-of-mass energies between 6.4 and 7.4 GeV. Taking into account QED backgrounds, we find an excess of 11 anomalous dimuon events. If these are attributed to the production and subsequent decay of a pair of heavy leptons L/sup + -/, we obtain the muonic braching ratio B ((L/sup +/ ..-->.. ..mu../sup +/..nu../sub ..mu../nu-bar/sub L/)/ (L/sup +/ ..-->.. all)) = 0.22/sup +0.07//sub -0.08/.

Authors:
; ; ; ; ; ; ; ; ; ; ; ; ; ;
Publication Date:
Research Org.:
Department of Physics and Astrophysics, University of Colorado, Boulder, Colorado 80309
OSTI Identifier:
6824829
Resource Type:
Journal Article
Journal Name:
Phys. Rev., D; (United States)
Additional Journal Information:
Journal Volume: 18:1
Country of Publication:
United States
Language:
English
Subject:
72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS; ELECTRON-POSITRON INTERACTIONS; ANNIHILATION; HEAVY LEPTONS; LEPTONIC DECAY; MUONS; PAIR PRODUCTION; BRANCHING RATIO; GEV RANGE 01-10; LIQUID SCINTILLATION DETECTORS; QUANTUM ELECTRODYNAMICS; BASIC INTERACTIONS; DECAY; ELECTRODYNAMICS; ELECTROMAGNETIC INTERACTIONS; ELEMENTARY PARTICLES; ENERGY RANGE; FERMIONS; FIELD THEORIES; GEV RANGE; INTERACTIONS; LEPTON-LEPTON INTERACTIONS; LEPTONS; MEASURING INSTRUMENTS; PARTICLE DECAY; PARTICLE INTERACTIONS; POSTULATED PARTICLES; QUANTUM FIELD THEORY; RADIATION DETECTORS; SCINTILLATION COUNTERS; WEAK INTERACTIONS; WEAK PARTICLE DECAY; 645101* - High Energy Physics- Particle Interactions & Properties-Experimental- Electromagnetic Interactions & Properties

Citation Formats

Smith, J G, Ford, W T, Morse, R, Mann, A K, Resvanis, L, Camerini, U, Cline, D B, Freeman, J, Learned, J G, Linton, J W, March, R, Reeder, D D, Seidman, K M, Spencer, C M, and Wilkinson, C. Measurement of anomalous muon pair production in electron-positron annihilations. United States: N. p., 1978. Web. doi:10.1103/PhysRevD.18.1.
Smith, J G, Ford, W T, Morse, R, Mann, A K, Resvanis, L, Camerini, U, Cline, D B, Freeman, J, Learned, J G, Linton, J W, March, R, Reeder, D D, Seidman, K M, Spencer, C M, & Wilkinson, C. Measurement of anomalous muon pair production in electron-positron annihilations. United States. doi:10.1103/PhysRevD.18.1.
Smith, J G, Ford, W T, Morse, R, Mann, A K, Resvanis, L, Camerini, U, Cline, D B, Freeman, J, Learned, J G, Linton, J W, March, R, Reeder, D D, Seidman, K M, Spencer, C M, and Wilkinson, C. Sat . "Measurement of anomalous muon pair production in electron-positron annihilations". United States. doi:10.1103/PhysRevD.18.1.
@article{osti_6824829,
title = {Measurement of anomalous muon pair production in electron-positron annihilations},
author = {Smith, J G and Ford, W T and Morse, R and Mann, A K and Resvanis, L and Camerini, U and Cline, D B and Freeman, J and Learned, J G and Linton, J W and March, R and Reeder, D D and Seidman, K M and Spencer, C M and Wilkinson, C},
abstractNote = {We have observed 16 events of the type ..mu../sup +/..mu../sup -/ + (missing energy and momentum) from e/sup +/e/sup -/ annihilations at center-of-mass energies between 6.4 and 7.4 GeV. Taking into account QED backgrounds, we find an excess of 11 anomalous dimuon events. If these are attributed to the production and subsequent decay of a pair of heavy leptons L/sup + -/, we obtain the muonic braching ratio B ((L/sup +/ ..-->.. ..mu../sup +/..nu../sub ..mu../nu-bar/sub L/)/ (L/sup +/ ..-->.. all)) = 0.22/sup +0.07//sub -0.08/.},
doi = {10.1103/PhysRevD.18.1},
journal = {Phys. Rev., D; (United States)},
number = ,
volume = 18:1,
place = {United States},
year = {1978},
month = {7}
}