# Impact of leptonic unitarity and dark matter direct detection experiments on the NMSSM with inverse seesaw mechanism

## TL;DR

This paper investigates how leptonic unitarity violations and dark matter detection experiments constrain the NMSSM with inverse seesaw, revealing strict bounds on neutrino Yukawa couplings and the potential impact of future experiments.

## Contribution

It provides a comprehensive analysis of experimental constraints on the NMSSM with inverse seesaw, highlighting the complementarity and strictness of these bounds.

## Key findings

- Leptonic unitarity and XENON-1T data limit neutrino Yukawa couplings.
- Constraints are complementary and sometimes very strict.
- Future LZ experiment could significantly impact the model.

## Abstract

In the Next-to-Minimal Supersymmetric Standard Model with the inverse seesaw mechanism to generate neutrino masses, the lightest sneutrino may act as a feasible dark matter candidate in vast parameter space. In this case, the smallness of the leptonic unitarity violation and the recent XENON-1T experiment can limit the dark matter physics. In particular, they set upper bounds of the neutrino Yukawa couplings $\lambda_\nu$ and $Y_\nu$. We study such effects by encoding the constraints in a likelihood function and carrying out elaborated scans over the parameter space of the theory with the Nested Sampling algorithm. We show that these constraints are complementary to each other in limiting the theory, and in some cases, they are very strict. We also study the impact of the future LZ experiment on the theory.