Weekly Seminar
HEPCo Group
Constraining axial non-standard neutrino interactions with MINOS and MINOS+
HEPCo Group
Constraining axial non-standard neutrino interactions with MINOS and MINOS+
S. Abbaslu, School of Physics
23 SEP 2025
14:00 - 15:00
Date and time
Tuesday, September 23rd, 2025 (1 Mehr), 2:00 pm (Tehran time)
Link
https://www.skyroom.online/ch/schoolofphysics/highenergyseminar
Abstract
The increasingly precise neutrino experiments raise the hope for searching for new physics through studying the impact of Neutral Current (NC) Non-Standard Interactions (NSI) of neutrinos with matter fields. Neutrino oscillation experiments along with the Elastic Coherent ν Nucleus Scattering (CENS) experiments already set strong bounds on all the flavor elements of the “vector” NC NSI. However, “axial” NC NSI can hide from these experiments. In our recent study, https://arxiv.org/abs/2509.02711, we show that the neutral current data of the MINOS and MINOS+ experiments can provide information on the axial neutral current non-standard interactions of neutrinos with the $u$ and $d$ quarks; {\it i.e.,} on $\epsilon_{\alpha \beta}^{Aq}$. We derive bounds on the $ee$, $e\tau$ and $\tau \tau$ components of these couplings and show that the MINOS(+) bounds on $\epsilon^{Aq}_{e\tau}$ and $\epsilon^{Aq}_{\tau\tau}$ are currently the world leading ones. The bound on the isospin singlet case, $\epsilon^{Au}_{\tau\tau}=\epsilon^{Ad}_{\tau\tau}$ is of particular interest because while this isospin singlet NSI is theoretically motivated, it was practically unconstrained before these results.
Link: https://www.skyroom.online/ch/schoolofphysics/highenergyseminar
