Analysis of Long Lived Particle Decays with the MATHUSLA Detector

Understand

The MATHUSLA detector is a simple large-volume tracking detector to be located on the surface above one of the general-purpose experiments at the Large Hadron Collider.

• This detector was proposed in [1] to detect exotic, neutral, long-lived particles that might be produced in high-energy proton-proton collisions.
• In this paper, we consider the use of the limited information that MATHUSLA would provide on the decay products of the long-lived particle.
• For the case in which the long-lived particle is pair-produced in Higgs boson decays, we show that it is possible to measure the mass of this particle and determine the dominant decay mode with less than 100 observed events.