Dedicated triggers for displaced jets using timing information from electromagnetic calorimeter at HL-LHC
Abstract In this paper, we study the prospect of ECAL barrel timing to develop triggers dedicated to long-lived particles decaying to jets at the level-1 of HL-LHC. We construct over 20 timing-based variables, and identify two of them which have better performances and are robust against increasing...
| Main Authors: | , , , |
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| Format: | Article |
| Language: | English |
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SpringerOpen
2022-08-01
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| Series: | Journal of High Energy Physics |
| Subjects: | |
| Online Access: | https://doi.org/10.1007/JHEP08(2022)254 |
| _version_ | 1817999003014397952 |
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| author | Biplob Bhattacherjee Tapasi Ghosh Rhitaja Sengupta Prabhat Solanki |
| author_facet | Biplob Bhattacherjee Tapasi Ghosh Rhitaja Sengupta Prabhat Solanki |
| author_sort | Biplob Bhattacherjee |
| collection | DOAJ |
| description | Abstract In this paper, we study the prospect of ECAL barrel timing to develop triggers dedicated to long-lived particles decaying to jets at the level-1 of HL-LHC. We construct over 20 timing-based variables, and identify two of them which have better performances and are robust against increasing PU. We estimate the QCD prompt jet background rates accurately using the “stitching” procedure for varying thresholds defining our triggers and compute the signal efficiencies for different LLP scenarios for a permissible background rate. The trigger efficiencies can go up to O 80 % $$ \mathcal{O}\left(80\%\right) $$ for the most optimal trigger for pair-produced heavy LLPs having high decay lengths, which degrades with decreasing mass and decay length of the LLP. We also discuss the prospect of including the information of displaced L1 tracks to our triggers, which further improves the results, especially for LLPs characterised by lower decay lengths. |
| first_indexed | 2024-04-14T03:02:03Z |
| format | Article |
| id | doaj.art-f22886bf8aed4c16983d48aeab2825da |
| institution | Directory Open Access Journal |
| issn | 1029-8479 |
| language | English |
| last_indexed | 2024-04-14T03:02:03Z |
| publishDate | 2022-08-01 |
| publisher | SpringerOpen |
| record_format | Article |
| series | Journal of High Energy Physics |
| spelling | doaj.art-f22886bf8aed4c16983d48aeab2825da2022-12-22T02:15:53ZengSpringerOpenJournal of High Energy Physics1029-84792022-08-012022814610.1007/JHEP08(2022)254Dedicated triggers for displaced jets using timing information from electromagnetic calorimeter at HL-LHCBiplob Bhattacherjee0Tapasi Ghosh1Rhitaja Sengupta2Prabhat Solanki3Centre for High Energy Physics, Indian Institute of ScienceM.S. Ramaiah University of Applied SciencesCentre for High Energy Physics, Indian Institute of ScienceCentre for High Energy Physics, Indian Institute of ScienceAbstract In this paper, we study the prospect of ECAL barrel timing to develop triggers dedicated to long-lived particles decaying to jets at the level-1 of HL-LHC. We construct over 20 timing-based variables, and identify two of them which have better performances and are robust against increasing PU. We estimate the QCD prompt jet background rates accurately using the “stitching” procedure for varying thresholds defining our triggers and compute the signal efficiencies for different LLP scenarios for a permissible background rate. The trigger efficiencies can go up to O 80 % $$ \mathcal{O}\left(80\%\right) $$ for the most optimal trigger for pair-produced heavy LLPs having high decay lengths, which degrades with decreasing mass and decay length of the LLP. We also discuss the prospect of including the information of displaced L1 tracks to our triggers, which further improves the results, especially for LLPs characterised by lower decay lengths.https://doi.org/10.1007/JHEP08(2022)254Higgs PropertiesSpecific BSM PhenomenologySupersymmetry |
| spellingShingle | Biplob Bhattacherjee Tapasi Ghosh Rhitaja Sengupta Prabhat Solanki Dedicated triggers for displaced jets using timing information from electromagnetic calorimeter at HL-LHC Journal of High Energy Physics Higgs Properties Specific BSM Phenomenology Supersymmetry |
| title | Dedicated triggers for displaced jets using timing information from electromagnetic calorimeter at HL-LHC |
| title_full | Dedicated triggers for displaced jets using timing information from electromagnetic calorimeter at HL-LHC |
| title_fullStr | Dedicated triggers for displaced jets using timing information from electromagnetic calorimeter at HL-LHC |
| title_full_unstemmed | Dedicated triggers for displaced jets using timing information from electromagnetic calorimeter at HL-LHC |
| title_short | Dedicated triggers for displaced jets using timing information from electromagnetic calorimeter at HL-LHC |
| title_sort | dedicated triggers for displaced jets using timing information from electromagnetic calorimeter at hl lhc |
| topic | Higgs Properties Specific BSM Phenomenology Supersymmetry |
| url | https://doi.org/10.1007/JHEP08(2022)254 |
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