HERA high Q 2 events as indications of excited leptons with weak isotopic spin 3/2
Abstract
The H1 and ZEUS anomalous events are interpreted as being due to the production and the decay of excited leptons
E
, which correspond to spin 1/2 resonances of the first generation lepton doublet (
ν
e
,e
) with W triplet. This assumption is supported by considering of Bethe-Salpeter equation in the ladder approximation with anomalous triple gauge boson vertex. The solution with weak isospin
I=3/2
is shown to exist for zero mass state, that means M_E
issmallincomparisonwithTeVmassscale.Thecouplingof
E
withleptonsand
W
isdefinedbythenormalizationcondition.Calculationofthe
E
widthandtheproductioncross−sectionsagreeswithHERAdataforvalueofthetriple
W
couplingconstant
\lambda \simeq 0.5$. Isotopic relations for different channels are presented as a tool for checking the interpretation.