New physics effects of a fifth dimension on the t → cg decay

15th Mexican School of Particles and Fields

Aranda, J.I.^1 ; López-Valdovinos, M.G.^1 ; Ramírez-Zavaleta, F.^1 ; Toscano, J.J.^2 ; Tututi, E.S.^1

Facultad de Ciencias Físico Matemáticas, Universidad Michoacana de San Nicolás de Hidalgo, Avenida Francisco J. Mújica S/N, Michoacán, 58060, Morelia, Mexico^1

Facultad de Ciencias Físico Matemáticas, Benemérita Universidad Autónoma de Puebla, Apartado Postal 1152, Puebla, Puebla, Mexico^2

关键词: Electroweak symmetry breaking;    Energy scale;    New physics;    Spatial dimension;    Strong coupling;    The standard model;    Top quarks;   

Others  :  https://iopscience.iop.org/article/10.1088/1742-6596/468/1/012002/pdf
DOI  :  10.1088/1742-6596/468/1/012002

来源: IOP

【 摘 要 】

The top quark is the heaviest elementary particle known, with a mass close to electroweak symmetry breaking energy scale. Because of this, its dynamics can be very sensitive to new physics effects. In this work we study the one-loop effects of a fifth spatial dimension on the strong couplings for the rare t → cg decay. The analysis is done in the context of the standard model in five dimensions, with the fifth coordinate compactificated on the orbifold S1/Z2of radius R.