17–21 Jul 2023
University of Southampton Highfield Campus
Europe/London timezone

Audible Gravitational Echoes of New Physics

19 Jul 2023, 18:00
20m
B46/2003

B46/2003

Parallel talks Particle cosmology: Theory and Experiment Particle cosmology: Theory and Experiment

Speaker

Antonio Morais (Universidade de Aveiro)

Description

Based on the recent article [2023.02399], we discuss the LISA potential for finding evidence of New Physics from measurements of the Stochastic GW Background (SGWB). As a benchmark scenario, we study a version of the low-scale Majoron model equipped with lepton number symmetry and an inverse seesaw mechanism for neutrino mass generation. In particular, we discuss under which circumstances the model can be probed at LISA and which implications result for collider physics observables, such as the Higgs trilinear coupling, the scalar mixing angle and the mass of a new CP-even Higgs boson. If time allows, we will also report on a scenario of symmetry restoration at zero temperature based on a model with two scalar leptoquarks.

Author

Antonio Morais (Universidade de Aveiro)

Presentation materials