TY - JOUR

T1 - Search for heavy lepton pair production in e+ e- collisions at center-of-mass energies of 130-GeV and 136-GeV

AU - Buskulic, D.

AU - Finch, Alexander

AU - ALEPH Collaboration

PY - 1996

Y1 - 1996

N2 - A search for pair production of new heavy leptons has been performed assuming different scenarios for the mixing of the new particles with Standard Model leptons. No candidate events were found in a data sample corresponding to an integrated luminosity of 5.6 pb−1 collected by the ALEPH detector at centre-of-mass energies of 130 and 136 GeV. New limits on production cross-sections and on masses of sequential leptons were obtained which significantly extend the mass regions excluded at LEP1. For instance, charged heavy leptons with masses below 63.5 GeV/c2 are excluded at 95% C.L. for mass differences to the associated neutral lepton of more than 7 GeV/c2.

AB - A search for pair production of new heavy leptons has been performed assuming different scenarios for the mixing of the new particles with Standard Model leptons. No candidate events were found in a data sample corresponding to an integrated luminosity of 5.6 pb−1 collected by the ALEPH detector at centre-of-mass energies of 130 and 136 GeV. New limits on production cross-sections and on masses of sequential leptons were obtained which significantly extend the mass regions excluded at LEP1. For instance, charged heavy leptons with masses below 63.5 GeV/c2 are excluded at 95% C.L. for mass differences to the associated neutral lepton of more than 7 GeV/c2.

U2 - 10.1016/0370-2693(96)00928-8

DO - 10.1016/0370-2693(96)00928-8

M3 - Journal article

VL - 384

SP - 439

EP - 448

JO - Physics Letters B

JF - Physics Letters B

SN - 0370-2693

IS - 1-4

ER -