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arXiv · 2205.04473

dE/dx from boosted long-lived particles

Gian F. Giudice·Matthew McCullough·Daniele Teresi
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Abstract

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 the decay of a heavy parent resonance. Such scenarios give rise to unique signatures as compared to traditionally considered $dE/dx$ new-physics benchmarks. We demonstrate that this class of models, unlike traditional new-physics theories, can explain the recently reported excess of events in the $dE/dx$ search by the ATLAS collaboration without conflicting with the determination of $\beta$ from ionisation and time-of-flight measurements.

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Gian F. Giudice, Matthew McCullough, Daniele Teresi. 2022-05-09. dE/dx from boosted long-lived particles. https://doi.org/10.1007/jhep08(2022)012

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