Determining the lifetime of long-lived particles at the HL-LHC
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-u...
| Main Authors: | , , , , , |
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| Format: | Article |
| Language: | English |
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SpringerOpen
2021-02-01
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| Series: | European Physical Journal C: Particles and Fields |
| Online Access: | https://doi.org/10.1140/epjc/s10052-021-08945-9 |
| _version_ | 1818853565579395072 |
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| author | Shankha Banerjee Biplob Bhattacherjee Andreas Goudelis Björn Herrmann Dipan Sengupta Rhitaja Sengupta |
| author_facet | Shankha Banerjee Biplob Bhattacherjee Andreas Goudelis Björn Herrmann Dipan Sengupta Rhitaja Sengupta |
| author_sort | Shankha Banerjee |
| collection | DOAJ |
| description | 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. |
| first_indexed | 2024-12-19T07:38:50Z |
| format | Article |
| id | doaj.art-e55de6bc428c4fb4853862e611f8f30c |
| institution | Directory Open Access Journal |
| issn | 1434-6044 1434-6052 |
| language | English |
| last_indexed | 2024-12-19T07:38:50Z |
| publishDate | 2021-02-01 |
| publisher | SpringerOpen |
| record_format | Article |
| series | European Physical Journal C: Particles and Fields |
| spelling | doaj.art-e55de6bc428c4fb4853862e611f8f30c2022-12-21T20:30:31ZengSpringerOpenEuropean Physical Journal C: Particles and Fields1434-60441434-60522021-02-0181213510.1140/epjc/s10052-021-08945-9Determining the lifetime of long-lived particles at the HL-LHCShankha Banerjee0Biplob Bhattacherjee1Andreas Goudelis2Björn Herrmann3Dipan Sengupta4Rhitaja Sengupta5Department of Physics, Institute for Particle Physics Phenomenology, Durham UniversityCentre for High Energy Physics, Indian Institute of ScienceLaboratoire de Physique de Clermont (UMR 6533), CNRS/IN2P3, Univ. Clermont AuvergneUniv. Grenoble Alpes, Univ. Savoie Mont Blanc, CNRS, LAPThDepartment of Physics and Astronomy, University of California San DiegoCentre for High Energy Physics, Indian Institute of ScienceAbstract 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.https://doi.org/10.1140/epjc/s10052-021-08945-9 |
| spellingShingle | Shankha Banerjee Biplob Bhattacherjee Andreas Goudelis Björn Herrmann Dipan Sengupta Rhitaja Sengupta Determining the lifetime of long-lived particles at the HL-LHC European Physical Journal C: Particles and Fields |
| title | Determining the lifetime of long-lived particles at the HL-LHC |
| title_full | Determining the lifetime of long-lived particles at the HL-LHC |
| title_fullStr | Determining the lifetime of long-lived particles at the HL-LHC |
| title_full_unstemmed | Determining the lifetime of long-lived particles at the HL-LHC |
| title_short | Determining the lifetime of long-lived particles at the HL-LHC |
| title_sort | determining the lifetime of long lived particles at the hl lhc |
| url | https://doi.org/10.1140/epjc/s10052-021-08945-9 |
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