Search for type-III seesaw heavy leptons in leptonic final states in pp collisions at √s=13TeV with the ATLAS detector
Aad, G. ; Åkesson, T.P.A. LU
; Corrigan, E.E.
LU
; Doglioni, C.
LU
; Geisen, J.
LU
; Hansen, E.
LU
; Hedberg, V.
LU
; Herde, Hannah
LU
; Jarlskog, G.
LU
and Konya, B.
LU
, et al.
(2022)
In European Physical Journal C
82(11).
- Abstract
- A search for the pair production of heavy leptons as predicted by the type-III seesaw mechanism is presented. The search uses proton–proton collision data at a centre-of-mass energy of 13 TeV, corresponding to 139fb-1 of integrated luminosity recorded by the ATLAS detector during Run 2 of the Large Hadron Collider. The analysis focuses on final states with three or four electrons or muons from the possible decays of new heavy leptons via intermediate electroweak bosons. No significant deviations above the Standard Model expectation are observed; upper and lower limits on the heavy lepton production cross-section and masses are derived respectively. These results are then combined for the first time with the ones already published by ATLAS... (More)
- A search for the pair production of heavy leptons as predicted by the type-III seesaw mechanism is presented. The search uses proton–proton collision data at a centre-of-mass energy of 13 TeV, corresponding to 139fb-1 of integrated luminosity recorded by the ATLAS detector during Run 2 of the Large Hadron Collider. The analysis focuses on final states with three or four electrons or muons from the possible decays of new heavy leptons via intermediate electroweak bosons. No significant deviations above the Standard Model expectation are observed; upper and lower limits on the heavy lepton production cross-section and masses are derived respectively. These results are then combined for the first time with the ones already published by ATLAS using the channel with two leptons in the final state. The observed lower limit on the mass of the type-III seesaw heavy leptons combining two, three and four lepton channels together is 910 GeV at the 95% confidence level. © 2022, CERN for the benefit of the ATLAS Collaboration. (Less)
Please use this url to cite or link to this publication:
https://lup.lub.lu.se/record/90a019be-4414-4c51-9cdb-0df3eba37b26
- author
- Aad, G.
; Åkesson, T.P.A.
LU
; Corrigan, E.E.
LU
; Doglioni, C.
LU
; Geisen, J.
LU
; Hansen, E.
LU
; Hedberg, V.
LU
; Herde, Hannah
LU
; Jarlskog, G.
LU
and Konya, B.
LU
, et al. (More)
- Aad, G.
; Åkesson, T.P.A.
LU
; Corrigan, E.E.
LU
; Doglioni, C.
LU
; Geisen, J.
LU
; Hansen, E.
LU
; Hedberg, V.
LU
; Herde, Hannah
LU
; Jarlskog, G.
LU
; Konya, B.
LU
; Lytken, E.
LU
; Mankinen, K.H.
LU
; Marcon, C.
LU
; Mjörnmark, J.U.
LU
; Mullier, G.A.
LU
; Poettgen, R.
LU
; Skorda, E.
LU
; Smirnova, O.
LU
and Zwalinski, L.
(Less)
- author collaboration
- organization
- publishing date
- 2022
- type
- Contribution to journal
- publication status
- published
- subject
- in
- European Physical Journal C
- volume
- 82
- issue
- 11
- article number
- 988
- publisher
- Springer
- external identifiers
-
- scopus:85141210757
- ISSN
- 1434-6044
- DOI
- 10.1140/epjc/s10052-022-10785-0
- language
- English
- LU publication?
- yes
- id
- 90a019be-4414-4c51-9cdb-0df3eba37b26
- date added to LUP
- 2023-01-10 15:51:04
- date last changed
- 2023-04-06 06:16:26
@article{90a019be-4414-4c51-9cdb-0df3eba37b26,
abstract = {{A search for the pair production of heavy leptons as predicted by the type-III seesaw mechanism is presented. The search uses proton–proton collision data at a centre-of-mass energy of 13 TeV, corresponding to 139fb-1 of integrated luminosity recorded by the ATLAS detector during Run 2 of the Large Hadron Collider. The analysis focuses on final states with three or four electrons or muons from the possible decays of new heavy leptons via intermediate electroweak bosons. No significant deviations above the Standard Model expectation are observed; upper and lower limits on the heavy lepton production cross-section and masses are derived respectively. These results are then combined for the first time with the ones already published by ATLAS using the channel with two leptons in the final state. The observed lower limit on the mass of the type-III seesaw heavy leptons combining two, three and four lepton channels together is 910 GeV at the 95% confidence level. © 2022, CERN for the benefit of the ATLAS Collaboration.}},
author = {{Aad, G. and Åkesson, T.P.A. and Corrigan, E.E. and Doglioni, C. and Geisen, J. and Hansen, E. and Hedberg, V. and Herde, Hannah and Jarlskog, G. and Konya, B. and Lytken, E. and Mankinen, K.H. and Marcon, C. and Mjörnmark, J.U. and Mullier, G.A. and Poettgen, R. and Skorda, E. and Smirnova, O. and Zwalinski, L.}},
issn = {{1434-6044}},
language = {{eng}},
number = {{11}},
publisher = {{Springer}},
series = {{European Physical Journal C}},
title = {{Search for type-III seesaw heavy leptons in leptonic final states in pp collisions at √s=13TeV with the ATLAS detector}},
url = {{http://dx.doi.org/10.1140/epjc/s10052-022-10785-0}},
doi = {{10.1140/epjc/s10052-022-10785-0}},
volume = {{82}},
year = {{2022}},
}