EFFECTS OF COMPOSITENESS IN LEPTONIC TAU-DECAYS

Authors
CRUZ JLD SAMPAYO OA
Citation
Jld. Cruz et Oa. Sampayo, EFFECTS OF COMPOSITENESS IN LEPTONIC TAU-DECAYS, Physics letters. Section B, 306(3-4), 1993, pp. 395-397
Citations number
15
Categorie Soggetti
Physics
Journal title
Physics letters. Section B → ACNP
ISSN journal
03702693
Volume
306
Issue
3-4
Year of publication
1993
Pages
395 - 397
Database
ISI
SICI code
0370-2693(1993)306:3-4<395:EOCILT>2.0.ZU;2-P
Abstract
We study the effects of induced contact interactions, which arise when leptons and quarks are considered as composite objects, on the lepton ic decays of the tau. We find that 4-fermion contact interactions can modify the tau decay pattern, producing a violation of universality, w hich could resolve the observed discrepancy on the values of leptonic branching ratios, provided that the scale of compositeness is of the o rder of 3 TeV.