Speaker
Description
Neutrino oscillations can be affected by the presence of Earth-matter through charged and neutral current (NC) interactions, which are mediated by W and Z bosons, respectively. To investigate beyond Standard Model NC interactions, an additional gauge boson ($Z^\prime$) can facilitate interactions between matter and neutrinos. In our study, we investigate a lightweight $Z^\prime$ with a mass order of $10^{-16}$ eV or below, which could potentially mediate interactions between solar matter and neutrinos reaching Earth, known as the long-range force (LRF). We explore how future long-baseline neutrino experiments like P2SO and T2HKK can contribute to constraining the LRF parameters. Our specific goals are to investigate the following: the impact of LRF on the measurement of standard oscillation parameters and the capacity to impose limits on the LRF parameters. Also, we obtain the constraint on the mass of the new gauge boson and the value of the new coupling constant responsible for LRF due to the Sun's matter density. According to our study, the P2SO experiment is putting stringent constraints on the LRF parameters including the new gauge boson's mass and the value of new coupling constant. Furthermore, our findings reveal that LRF has a substantial impact on determining standard neutrino oscillation parameters $\theta_{23}$, $\delta_{\rm CP}$, and $\Delta m^2_{31}$. Notably, we observe that the precision of $\Delta m^2_{31}$ remains robust and unaffected by the presence of LRF in both P2SO and T2HKK experiments.
| Track type | Neutrino Physics |
|---|
