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Search for an excited lepton that decays via a contact interaction to a lepton and two jets in proton-proton collisions at √s = 13 TeV

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2020
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Authors
Sirunyan, A. M.
Tumasyan, A.
Adam, W.
Ambrogi, F.
Bergauer, T.
Adžić, Petar
Ćirković, Predrag
Devetak, Damir
Đorđević, Miloš
Milenović, Predrag
Milošević, Jovan
Stojanović, Milan
Contributors
CMS Collaboration
Article (Published version)
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© 2020 The Author(s)
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Abstract
Results are presented from a search for events containing an excited lepton (electron or muon) produced in association with an ordinary lepton of the same flavor and decaying to a lepton and two hadronic jets. Both the production and the decay of the excited leptons are assumed to occur via a contact interaction with a characteristic energy scale Λ. The branching fraction for the decay mode under study increases with the mass of the excited lepton and is the most sensitive channel for very heavy excited leptons. The analysis uses a sample of proton-proton collisions collected by the CMS experiment at the LHC at s = 13 TeV, corresponding to an integrated luminosity of 77.4 fb−1. The four-body invariant mass of the two lepton plus two jet system is used as the primary discriminating variable. No significant excess of events beyond the expectation for standard model processes is observed. Assuming that Λ is equal to the mass of the excited leptons, excited electrons and muons with masses ...below 5.6 and 5.7 TeV, respectively, are excluded at 95% confidence level.

Source:
Journal of High Energy Physics, 2020, 2020, 5, 52-
Note:
  • CMS Collaboration (ukupan broj autora: 2340)

DOI: 10.1007/JHEP05(2020)052

ISSN: 1126-6708

WoS: 000534520400001

Scopus: 2-s2.0-85084637829
[ Google Scholar ]
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URI
https://vinar.vin.bg.ac.rs/handle/123456789/8990
Collections
  • Radovi istraživača
Institution/Community
Vinča
TY  - JOUR
AU  - Sirunyan, A. M.
AU  - Tumasyan, A.
AU  - Adam, W.
AU  - Ambrogi, F.
AU  - Bergauer, T.
AU  - Adžić, Petar
AU  - Ćirković, Predrag
AU  - Devetak, Damir
AU  - Đorđević, Miloš
AU  - Milenović, Predrag
AU  - Milošević, Jovan
AU  - Stojanović, Milan
PY  - 2020
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/8990
AB  - Results are presented from a search for events containing an excited lepton (electron or muon) produced in association with an ordinary lepton of the same flavor and decaying to a lepton and two hadronic jets. Both the production and the decay of the excited leptons are assumed to occur via a contact interaction with a characteristic energy scale Λ. The branching fraction for the decay mode under study increases with the mass of the excited lepton and is the most sensitive channel for very heavy excited leptons. The analysis uses a sample of proton-proton collisions collected by the CMS experiment at the LHC at s = 13 TeV, corresponding to an integrated luminosity of 77.4 fb−1. The four-body invariant mass of the two lepton plus two jet system is used as the primary discriminating variable. No significant excess of events beyond the expectation for standard model processes is observed. Assuming that Λ is equal to the mass of the excited leptons, excited electrons and muons with masses below 5.6 and 5.7 TeV, respectively, are excluded at 95% confidence level.
T2  - Journal of High Energy Physics
T1  - Search for an excited lepton that decays via a contact interaction to a lepton and two jets in proton-proton collisions at √s = 13 TeV
VL  - 2020
IS  - 5
SP  - 52
DO  - 10.1007/JHEP05(2020)052
ER  - 
@article{
author = "Sirunyan, A. M. and Tumasyan, A. and Adam, W. and Ambrogi, F. and Bergauer, T. and Adžić, Petar and Ćirković, Predrag and Devetak, Damir and Đorđević, Miloš and Milenović, Predrag and Milošević, Jovan and Stojanović, Milan",
year = "2020",
abstract = "Results are presented from a search for events containing an excited lepton (electron or muon) produced in association with an ordinary lepton of the same flavor and decaying to a lepton and two hadronic jets. Both the production and the decay of the excited leptons are assumed to occur via a contact interaction with a characteristic energy scale Λ. The branching fraction for the decay mode under study increases with the mass of the excited lepton and is the most sensitive channel for very heavy excited leptons. The analysis uses a sample of proton-proton collisions collected by the CMS experiment at the LHC at s = 13 TeV, corresponding to an integrated luminosity of 77.4 fb−1. The four-body invariant mass of the two lepton plus two jet system is used as the primary discriminating variable. No significant excess of events beyond the expectation for standard model processes is observed. Assuming that Λ is equal to the mass of the excited leptons, excited electrons and muons with masses below 5.6 and 5.7 TeV, respectively, are excluded at 95% confidence level.",
journal = "Journal of High Energy Physics",
title = "Search for an excited lepton that decays via a contact interaction to a lepton and two jets in proton-proton collisions at √s = 13 TeV",
volume = "2020",
number = "5",
pages = "52",
doi = "10.1007/JHEP05(2020)052"
}
Sirunyan, A. M., Tumasyan, A., Adam, W., Ambrogi, F., Bergauer, T., Adžić, P., Ćirković, P., Devetak, D., Đorđević, M., Milenović, P., Milošević, J.,& Stojanović, M.. (2020). Search for an excited lepton that decays via a contact interaction to a lepton and two jets in proton-proton collisions at √s = 13 TeV. in Journal of High Energy Physics, 2020(5), 52.
https://doi.org/10.1007/JHEP05(2020)052
Sirunyan AM, Tumasyan A, Adam W, Ambrogi F, Bergauer T, Adžić P, Ćirković P, Devetak D, Đorđević M, Milenović P, Milošević J, Stojanović M. Search for an excited lepton that decays via a contact interaction to a lepton and two jets in proton-proton collisions at √s = 13 TeV. in Journal of High Energy Physics. 2020;2020(5):52.
doi:10.1007/JHEP05(2020)052 .
Sirunyan, A. M., Tumasyan, A., Adam, W., Ambrogi, F., Bergauer, T., Adžić, Petar, Ćirković, Predrag, Devetak, Damir, Đorđević, Miloš, Milenović, Predrag, Milošević, Jovan, Stojanović, Milan, "Search for an excited lepton that decays via a contact interaction to a lepton and two jets in proton-proton collisions at √s = 13 TeV" in Journal of High Energy Physics, 2020, no. 5 (2020):52,
https://doi.org/10.1007/JHEP05(2020)052 . .

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