Search for long-lived, massive particles in events with displaced vertices and multiple jets in pp collisions at √s = 13 TeV with the ATLAS detector
(2023) In Journal of High Energy Physics 2023(6).- Abstract
- A search for long-lived particles decaying into hadrons is presented. The analysis uses 139 fb−1 of pp collision data collected at s = 13 TeV by the ATLAS detector at the LHC using events that contain multiple energetic jets and a displaced vertex. The search employs dedicated reconstruction techniques that significantly increase the sensitivity to long-lived particles decaying in the ATLAS inner detector. Background estimates for Standard Model processes and instrumental effects are extracted from data. The observed event yields are compatible with those expected from background processes. The results are used to set limits at 95% confidence level on model-independent cross sections for processes beyond the Standard Model, and on... (More)
- A search for long-lived particles decaying into hadrons is presented. The analysis uses 139 fb−1 of pp collision data collected at s = 13 TeV by the ATLAS detector at the LHC using events that contain multiple energetic jets and a displaced vertex. The search employs dedicated reconstruction techniques that significantly increase the sensitivity to long-lived particles decaying in the ATLAS inner detector. Background estimates for Standard Model processes and instrumental effects are extracted from data. The observed event yields are compatible with those expected from background processes. The results are used to set limits at 95% confidence level on model-independent cross sections for processes beyond the Standard Model, and on scenarios with pair-production of supersymmetric particles with long-lived electroweakinos that decay via a small R-parity-violating coupling. The pair-production of electroweakinos with masses below 1.5 TeV is excluded for mean proper lifetimes in the range from 0.03 ns to 1 ns. When produced in the decay of m(g~) = 2.4 TeV gluinos, electroweakinos with m(χ~10) = 1.5 TeV are excluded with lifetimes in the range of 0.02 ns to 4 ns. [Figure not available: see fulltext.]. © 2023, The Author(s). (Less)
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- author
- author collaboration
- organization
- publishing date
- 2023
- type
- Contribution to journal
- publication status
- published
- subject
- keywords
- Beyond Standard Model, Hadron-Hadron Scattering, Supersymmetry
- in
- Journal of High Energy Physics
- volume
- 2023
- issue
- 6
- article number
- 200
- publisher
- Springer
- external identifiers
-
- scopus:85166271763
- ISSN
- 1029-8479
- DOI
- 10.1007/JHEP06(2023)200
- language
- English
- LU publication?
- yes
- id
- 70bab3a1-2b28-451f-9a8f-2a56c6d0c599
- date added to LUP
- 2023-12-20 15:49:06
- date last changed
- 2023-12-20 15:49:06
@article{70bab3a1-2b28-451f-9a8f-2a56c6d0c599, abstract = {{A search for long-lived particles decaying into hadrons is presented. The analysis uses 139 fb−1 of pp collision data collected at s = 13 TeV by the ATLAS detector at the LHC using events that contain multiple energetic jets and a displaced vertex. The search employs dedicated reconstruction techniques that significantly increase the sensitivity to long-lived particles decaying in the ATLAS inner detector. Background estimates for Standard Model processes and instrumental effects are extracted from data. The observed event yields are compatible with those expected from background processes. The results are used to set limits at 95% confidence level on model-independent cross sections for processes beyond the Standard Model, and on scenarios with pair-production of supersymmetric particles with long-lived electroweakinos that decay via a small R-parity-violating coupling. The pair-production of electroweakinos with masses below 1.5 TeV is excluded for mean proper lifetimes in the range from 0.03 ns to 1 ns. When produced in the decay of m(g~) = 2.4 TeV gluinos, electroweakinos with m(χ~10) = 1.5 TeV are excluded with lifetimes in the range of 0.02 ns to 4 ns. [Figure not available: see fulltext.]. © 2023, The Author(s).}}, author = {{Aad, G. and Åkesson, T.P.A. and Corrigan, E.E. and Doglioni, C. and Ekman, P.A. and Geisen, J. and Hedberg, V. and Herde, H. and Jarlskog, G. and Konya, B. and Lytken, E. and Mjörnmark, J.U. and Poettgen, R. and Simpson, N.D. and Skorda, E. and Smirnova, O. and Zwalinski, L.}}, issn = {{1029-8479}}, keywords = {{Beyond Standard Model; Hadron-Hadron Scattering; Supersymmetry}}, language = {{eng}}, number = {{6}}, publisher = {{Springer}}, series = {{Journal of High Energy Physics}}, title = {{Search for long-lived, massive particles in events with displaced vertices and multiple jets in pp collisions at √s = 13 TeV with the ATLAS detector}}, url = {{http://dx.doi.org/10.1007/JHEP06(2023)200}}, doi = {{10.1007/JHEP06(2023)200}}, volume = {{2023}}, year = {{2023}}, }