Search for unstable heavy and excited leptons in e+e− collisions at ∝s = 170-172 GeV

Kartvelishvili, Vakhtang (1998) Search for unstable heavy and excited leptons in e+e− collisions at ∝s = 170-172 GeV. European Physical Journal C: Particles and Fields, 1 (1). pp. 45-64. ISSN 1434-6044

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Abstract

We have searched for unstable neutral and charged heavy leptons, N and L±, and for excited states of neutral and charged leptons, ν* e*, μ* and τ*, in e+e− collisions at centre-of-mass energies of 170 and 172 GeV using the OPAL detector at LEP. No evidence for their existence was found. From the analysis of charged-current decays of pair-produced unstable heavy leptons, and of charged-current and photonic decays of pair-produced excited leptons, lower limits on their masses are derived. From the analysis of charged-current and photonic decays of singly-produced excited leptons, upper limits on the ratio of the coupling to the compositeness scale, ϕ/λ, are determined for masses up to the kinematic limit.

Item Type:
Journal Article
Journal or Publication Title:
European Physical Journal C: Particles and Fields
Uncontrolled Keywords:
/dk/atira/pure/subjectarea/asjc/2200/2201
Subjects:
ID Code:
82528
Deposited By:
Deposited On:
01 Nov 2016 11:22
Refereed?:
Yes
Published?:
Published
Last Modified:
11 Mar 2020 05:39