Regular Article - Theoretical Physics
KK-parity non-conservation in UED confronts LHC data
Department of Physics, University of Calcutta, 92 Acharya Prafulla Chandra Road, Kolkata, 700009, India
* e-mail: email@example.com
Accepted: 22 December 2014
Published online: 28 January 2015
Kaluza–Klein (KK) parity can be violated in a five-dimensional universal extra-dimensional model with boundary-localised (kinetic or mass) terms (BLTs) at the fixed points of orbifold. In this framework we study the resonant production of Kaluza–Klein excitations of the neutral electroweak gauge bosons at the LHC and their decay into an electron–positron pair or a muon–antimuon pair. We use the results (for the first time, to our knowledge) given by the LHC experiment to constrain the mass range of the first KK-excitation of the electroweak gauge bosons (). It is interesting to note that the LHC result puts an upper limit on the masses of the KK-leptons for positive values of the BLT parameters depending upon the mass of the resonance.
© SIF and Springer-Verlag Berlin Heidelberg, 2015