Universal extra dimensions : life with BLKTs

National Conference on Contemporary Issues in High Energy Physics and Cosmology

Datta, Anindya^1 ; Dey, Ujjal Kumar^2 ; Raychaudhuri, Amitava^1 ; Shaw, Avirup^1

Department of Physics, University of Calcutta, 92, Acharyya Prafulla Chandra Road, Kolkata 700009, India^1

Harish-Chandra Research Institute, Chhatnag Roag, Jhunsi Allahabad 211019, India^2

关键词: Dark matter;    Electroweak gauge bosons;    Extra dimensions;    Fixed points;    Gauge bosons;    Kaluza-Klein excitation;    Universal extra dimensions;   

Others  :  https://iopscience.iop.org/article/10.1088/1742-6596/481/1/012006/pdf
DOI  :  10.1088/1742-6596/481/1/012006

来源: IOP

【 摘 要 】

In universal extra dimension (UED) models with one compactified extra dimension, a Z2symmetry, termed KK-parity, ensures the stability of the lightest Kaluza-Klein particle (LKP) which could be a viable dark matter candidate. This symmetry leads to two fixed points in the extra space like direction. In non-minimal versions of UED boundary-localized kinetic terms (BLKT) of same strength at both fixed points induce a new Z2symmetry which ensures the stability of LKP. The precision of the dark matter measurements severely correlates and restricts the BLKT parameters of gauge bosons and fermions. Furthermore, BLKT parameters of different strengths at the fixed would induce a non-consevation of KK-parity. We examine, in the presence of such terms, single production and decay of Kaluza-Klein excitations of the neutral electroweak gauge bosons in the context of LHC.