dE/dx from boosted long-lived particles

A bstract At colliders massive long-lived charged particles could be revealed through their anomalously large ionisation energy loss dE/dx . In this paper we explore a class of scenarios in which the LLPs are particularly boosted, owing to production from decay heavy parent resonance. Such give rise unique signatures as compared traditionally considered new-physics benchmarks. We demonstrate that models, unlike traditional theories, can explain recently reported excess events search by ATLAS collaboration without conflicting with determination β and time-of-flight measurements.