Search for decays of stopped exotic long-lived particles produced in proton-proton collisions at √s=13 TeV
A search is presented for the decays of heavy exotic long-lived particles (LLPs) that are produced in proton-proton collisions at a center-of-mass energy of 13 TeV at the CERN LHC and come to rest in the CMS detector. Their decays would be visible during periods of time well separated from proton-pr...
| Main Authors: | , , , , , |
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| Format: | Article |
| Language: | English English |
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Springer Nature
2018
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| Online Access: | http://irep.iium.edu.my/65155/ http://irep.iium.edu.my/65155/1/65155_Search%20for%20decays%20of%20stopped%20exotic%20long-lived_article.pdf http://irep.iium.edu.my/65155/2/65155_Search%20for%20decays%20of%20stopped%20exotic%20long-lived_scopus.pdf |
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| author | Sirunyan, A. M. Tumasyan, A. R. Adam, Wolfgang Ambrogi, Federico Asilar, Ece Md. Ali, Mohd. Adli |
| author_facet | Sirunyan, A. M. Tumasyan, A. R. Adam, Wolfgang Ambrogi, Federico Asilar, Ece Md. Ali, Mohd. Adli |
| author_sort | Sirunyan, A. M. |
| building | IIUM Repository |
| collection | Online Access |
| description | A search is presented for the decays of heavy exotic long-lived particles (LLPs) that are produced in proton-proton collisions at a center-of-mass energy of 13 TeV at the CERN LHC and come to rest in the CMS detector. Their decays would be visible during periods of time well separated from proton-proton collisions. Two decay scenarios of stopped LLPs are explored: a hadronic decay detected in the calorimeter and a decay into muons detected in the muon system. The calorimeter (muon) search covers a period of sensitivity totaling 721 (744) hours in 38.6 (39.0) fb−1 of data collected by the CMS detector in 2015 and 2016. The results are interpreted in several scenarios that predict LLPs. Production cross section limits are set as a function of the mean proper lifetime and the mass of the LLPs, for lifetimes between 100 ns and 10 days. These are the most stringent limits to date on the mass of hadronically decaying stopped LLPs, and this is the first search at the LHC for stopped LLPs that decay to muons.[Figure not available: see fulltext.]. |
| first_indexed | 2025-11-14T17:07:29Z |
| format | Article |
| id | iium-65155 |
| institution | International Islamic University Malaysia |
| institution_category | Local University |
| language | English English |
| last_indexed | 2025-11-14T17:07:29Z |
| publishDate | 2018 |
| publisher | Springer Nature |
| recordtype | eprints |
| repository_type | Digital Repository |
| spelling | iium-651552018-07-25T08:21:13Z http://irep.iium.edu.my/65155/ Search for decays of stopped exotic long-lived particles produced in proton-proton collisions at √s=13 TeV Sirunyan, A. M. Tumasyan, A. R. Adam, Wolfgang Ambrogi, Federico Asilar, Ece Md. Ali, Mohd. Adli Q Science (General) QC Physics A search is presented for the decays of heavy exotic long-lived particles (LLPs) that are produced in proton-proton collisions at a center-of-mass energy of 13 TeV at the CERN LHC and come to rest in the CMS detector. Their decays would be visible during periods of time well separated from proton-proton collisions. Two decay scenarios of stopped LLPs are explored: a hadronic decay detected in the calorimeter and a decay into muons detected in the muon system. The calorimeter (muon) search covers a period of sensitivity totaling 721 (744) hours in 38.6 (39.0) fb−1 of data collected by the CMS detector in 2015 and 2016. The results are interpreted in several scenarios that predict LLPs. Production cross section limits are set as a function of the mean proper lifetime and the mass of the LLPs, for lifetimes between 100 ns and 10 days. These are the most stringent limits to date on the mass of hadronically decaying stopped LLPs, and this is the first search at the LHC for stopped LLPs that decay to muons.[Figure not available: see fulltext.]. Springer Nature 2018 Article PeerReviewed application/pdf en http://irep.iium.edu.my/65155/1/65155_Search%20for%20decays%20of%20stopped%20exotic%20long-lived_article.pdf application/pdf en http://irep.iium.edu.my/65155/2/65155_Search%20for%20decays%20of%20stopped%20exotic%20long-lived_scopus.pdf Sirunyan, A. M. and Tumasyan, A. R. and Adam, Wolfgang and Ambrogi, Federico and Asilar, Ece and Md. Ali, Mohd. Adli (2018) Search for decays of stopped exotic long-lived particles produced in proton-proton collisions at √s=13 TeV. Journal of High Energy Physics, 2018 (5). pp. 1-46. ISSN 1029-8479 https://link.springer.com/content/pdf/10.1007%2FJHEP05%282018%29127.pdf 10.1007/JHEP05(2018)127 |
| spellingShingle | Q Science (General) QC Physics Sirunyan, A. M. Tumasyan, A. R. Adam, Wolfgang Ambrogi, Federico Asilar, Ece Md. Ali, Mohd. Adli Search for decays of stopped exotic long-lived particles produced in proton-proton collisions at √s=13 TeV |
| title | Search for decays of stopped exotic long-lived particles produced in proton-proton collisions at √s=13 TeV |
| title_full | Search for decays of stopped exotic long-lived particles produced in proton-proton collisions at √s=13 TeV |
| title_fullStr | Search for decays of stopped exotic long-lived particles produced in proton-proton collisions at √s=13 TeV |
| title_full_unstemmed | Search for decays of stopped exotic long-lived particles produced in proton-proton collisions at √s=13 TeV |
| title_short | Search for decays of stopped exotic long-lived particles produced in proton-proton collisions at √s=13 TeV |
| title_sort | search for decays of stopped exotic long-lived particles produced in proton-proton collisions at √s=13 tev |
| topic | Q Science (General) QC Physics |
| url | http://irep.iium.edu.my/65155/ http://irep.iium.edu.my/65155/ http://irep.iium.edu.my/65155/ http://irep.iium.edu.my/65155/1/65155_Search%20for%20decays%20of%20stopped%20exotic%20long-lived_article.pdf http://irep.iium.edu.my/65155/2/65155_Search%20for%20decays%20of%20stopped%20exotic%20long-lived_scopus.pdf |