20–22 Jan 2026
Faculty of Science, Cairo University, Egypt
Africa/Cairo timezone

Explaining MiniBooNe and CDF II anomalies using scalars and the Inverse seesaw mechanism

20 Jan 2026, 16:00
30m
Ibn Sina Hall (Faculty of Science, Cairo University, Egypt)

Ibn Sina Hall

Faculty of Science, Cairo University, Egypt

Speaker

Ahmed Raafat (Depratment of Basic Science, Faculty of Computer Science, Ain Shams University)

Description

For decades, the Standard Model has provided an excellent explanation for many phenomenological observations; however, several mysteries remain, such as neutrino oscillations and the origin of neutrino mass. Additionally, there are significant tensions with experimental data, including the $7\sigma$ deviation in the W-boson mass reported by the CDF II experiment and the excess of electron-like events observed by the MiniBooNE experiment, which deviates by $4.8\sigma$ from Standard Model predictions.We extend the Standard Model with additional scalars and fermions to address these issues. Specifically, we expand the fermion sector by adding singlet fermions and right-handed neutrinos to implement the inverse seesaw mechanism. For the scalar sector, we introduce a hypercharge $Y=2$ triplet scalar, a hypercharge $Y=1$ neutral singlet scalar, and a hypercharge $Y=4$ doubly charged singlet scalar. This specific combination is proposed to satisfy the aforementioned anomalies: the CP-even and CP-odd components of the triplet scalar are utilized to fit the MiniBooNE data, while the remaining scalar particles are employed to satisfy the CDF II constraints.

Author

Ahmed Raafat (Depratment of Basic Science, Faculty of Computer Science, Ain Shams University)

Presentation materials