Determining The Lifetime Of Long-lived Particles At The HL-LHC - ArXiv

High Energy Physics - Phenomenology arXiv:1912.06669 (hep-ph) [Submitted on 13 Dec 2019 (v1), last revised 24 Feb 2021 (this version, v3)] Title:Determining the lifetime of long-lived particles at the HL-LHC Authors:Shankha Banerjee, Biplob Bhattacherjee, Andreas Goudelis, Björn Herrmann, Dipan Sengupta, Rhitaja Sengupta View a PDF of the paper titled Determining the lifetime of long-lived particles at the HL-LHC, by Shankha Banerjee and 5 other authors View PDF

Abstract:We examine the capacity of the Large Hadron Collider to determine the mean proper lifetime of long-lived particles assuming different decay final states. We mostly concentrate on the high luminosity runs of the LHC, and therefore, develop our discussion in light of the high amount of pile-up and the various upgrades for the HL-LHC runs. We employ model-dependent and model-independent methods in order to reconstruct the proper lifetime of neutral long-lived particles decaying into displaced leptons, potentially accompanied by missing energy, as well as charged long-lived particles decaying ihnto leptons and missing energy. We also present a discussion for lifetime estimation of neutral long-lived particles decaying into displaced jets, along with the challenges in the high PU environment of HL-LHC. After a general discussion, we illustrate and discuss these methods using several new physics models. We conclude that the lifetime can indeed be reconstructed in many concrete cases. Finally, we discuss to which extent including timing information, which is an important addition in the Phase-II upgrade of CMS, can improve such an analysis.

Comments:	58 pages, 18 figures, 10 tables; v3: Version published in EPJC
Subjects:	High Energy Physics - Phenomenology (hep-ph)
Report number:	IPPP/19/94, LAPTH-051/19
Cite as:	arXiv:1912.06669 [hep-ph]
(or arXiv:1912.06669v3 [hep-ph] for this version)
https://doi.org/10.48550/arXiv.1912.06669 Focus to learn more arXiv-issued DOI via DataCite
Journal reference:	Eur. Phys. J. C 81, 172 (2021)
Related DOI:	https://doi.org/10.1140/epjc/s10052-021-08945-9 Focus to learn more DOI(s) linking to related resources

Submission history

From: Rhitaja Sengupta [view email] [v1] Fri, 13 Dec 2019 19:22:29 UTC (714 KB) [v2] Thu, 9 Jul 2020 14:53:42 UTC (664 KB) [v3] Wed, 24 Feb 2021 06:20:53 UTC (727 KB) Full-text links:

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