# EPS-HEP2021 conference

26-30 July 2021
Zoom
Europe/Berlin timezone

## Exploring Long-Range Force of $L_\mu-L_\tau$ Symmetry using Atmospheric Neutrino Experiment

27 Jul 2021, 16:40
20m
Zoom

#### Zoom

Parallel session talk Neutrino Physics

### Speaker

Dr Amina Khatun (Comenius University, Bratislava)

### Description

Flavor-dependent long-range leptonic force mediated by an ultralight and neutral
gauge boson $Z'$ associated with $L_\mu -L_\tau$ symmetry constitutes a minimal
extension of the Standard Model. We study the physical consequences of such
long-range force in the oscillation of terrestrial neutrinos, particularly in $\nu_\mu$ survival channel. We show that the proposed atmospheric neutrino detector ICAL will be able to put tight constraints on such long-range force due to its capabilities of detecting neutrino and antineutrino separately with wide ranges of energies and baselines. The expected upper limit on the fine structure constant of this long-range force at $3\sigma$ is $2.82\times 10^{-51}$ using 500 kt$\cdot$yr exposure of ICAL. We also study the possible impact of the long-range force in the expected measurement of mass ordering at the ICAL in detail.

Collaboration / Activity INO, ICAL amina.burd@gmail.com Amina Khatun

### Primary author

Dr Amina Khatun (Comenius University, Bratislava)

### Co-author

Dr Sanjib Kumar Agarwalla (Institute of Physics, Bhubaneswar)