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hep-ph2026
Cosmological Constraints on Long-Lived Particles Using Dimension-Six Effective Operators
Mickael V. S. de Farias, Rodrigo Holanda, Matheus M. A. Paixao +2
Long-lived particles (LLPs) provide an interesting window into physics beyond the Standard Model, offering characteristic signatures at colliders and in cosmology. In this work, we…
hep-ph2024
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, , directly from galaxy cluster gas mass fraction measurements and type Ia supe…