Search for excited muons in pp̄ collisions at s=1.96TeV

Authors

V. M. Abazov, Joint Institute for Nuclear Research, DubnaFollow
B. Abbott, University of Oklahoma
M. Abolins, Michigan State UniversityFollow
B. S. Acharya, Tata Institute of Fundamental Research, Mumbai
M. Adams, University of Illinois at ChicagoFollow
T. Adams, Florida State UniversityFollow
M. Agelou, CEA SaclayFollow
J. L. Agram, Institut de Recherches SubatomiquesFollow
Abaz Kryemadhi, Messiah UniversityFollow
M. Ahsan, Kansas State UniversityFollow

Document Type

Article

Publication Date

6-8-2006

Abstract

We present the results of a search for the production of an excited state of the muon, μ*, in proton antiproton collisions at s=1.96TeV. The data have been collected with the D0 experiment at the Fermilab Tevatron Collider and correspond to an integrated luminosity of approximately 380pb-1. We search for μ* in the process pp̄→μ*μ, with the μ* subsequently decaying to a muon plus photon. No excess above the standard model expectation is observed in data. Interpreting our data in the context of a model that describes μ* production by four-fermion contact interactions and μ* decay via electroweak processes, we set a 95% confidence level production cross section upper limit ranging from 0.057 to 0.112 pb, depending on the mass of the excited muon. Choosing the scale for contact interactions to be Λ=1TeV, excited muon masses below 618 GeV are excluded. © 2006 The American Physical Society.

Recommended Citation

Abazov, V. M.; Abbott, B.; Abolins, M.; Acharya, B. S.; Adams, M.; Adams, T.; Agelou, M.; Agram, J. L.; Kryemadhi, Abaz; and Ahsan, M., "Search for excited muons in pp̄ collisions at s=1.96TeV" (2006). Educator Scholarship & Departmental Newsletters. 179.
https://mosaic.messiah.edu/mps_ed/179