Observational bounds on a possible electron-to-proton mass ratio variation and constraints in the lepton-specific 2HDM

R. G. Albuquerque, R. F. L. Holanda, I. E. T. R. Mendonça +1

In this work, we test a possible redshift variation of the electron-to-proton mass ratio, $\mu =m_e/m_p$, directly from galaxy cluster gas mass fraction measurements and type Ia supe…