Search for long-lived charginos based on a disappearing-track signature in pp collisions at √s=13 TeV with the ATLAS detector
Aaboud, M ; Åkesson, Torsten LU
; Bocchetta, Simona
LU
; Doglioni, Caterina
LU
; Hedberg, Vincent
LU
; Jarlskog, Göran
LU
; Kalderon, Charles
LU
; Lytken, Else
LU
; Mankinen, Katja
LU
and Mjörnmark, Ulf
LU
, et al.
(2018)
In Journal of High Energy Physics
2018(6).
- Abstract
- This paper presents a search for direct electroweak gaugino or gluino pair production with a chargino nearly mass-degenerate with a stable neutralino. It is based on an integrated luminosity of 36.1 fb−1 of pp collisions at s=13 TeV collected by the ATLAS experiment at the LHC. The final state of interest is a disappearing track accompanied by at least one jet with high transverse momentum from initial-state radiation or by four jets from the gluino decay chain. The use of short track segments reconstructed from the innermost tracking layers significantly improves the sensitivity to short chargino lifetimes. The results are found to be consistent with Standard Model predictions. Exclusion limits are set at 95% confidence level on the mass... (More)
- This paper presents a search for direct electroweak gaugino or gluino pair production with a chargino nearly mass-degenerate with a stable neutralino. It is based on an integrated luminosity of 36.1 fb−1 of pp collisions at s=13 TeV collected by the ATLAS experiment at the LHC. The final state of interest is a disappearing track accompanied by at least one jet with high transverse momentum from initial-state radiation or by four jets from the gluino decay chain. The use of short track segments reconstructed from the innermost tracking layers significantly improves the sensitivity to short chargino lifetimes. The results are found to be consistent with Standard Model predictions. Exclusion limits are set at 95% confidence level on the mass of charginos and gluinos for different chargino lifetimes. For a pure wino with a lifetime of about 0.2 ns, chargino masses up to 460 GeV are excluded. For the strong production channel, gluino masses up to 1.65 TeV are excluded assuming a chargino mass of 460 GeV and lifetime of 0.2 ns.[Figure not available: see fulltext.]. © 2018, The Author(s). (Less)
Please use this url to cite or link to this publication:
https://lup.lub.lu.se/record/c21ecd25-9348-47f5-a155-e6c0f4cac182
- author
- Aaboud, M
; Åkesson, Torsten
LU
; Bocchetta, Simona
LU
; Doglioni, Caterina
LU
; Hedberg, Vincent
LU
; Jarlskog, Göran
LU
; Kalderon, Charles
LU
; Lytken, Else
LU
; Mankinen, Katja
LU
and Mjörnmark, Ulf
LU
, et al. (More)
- Aaboud, M
; Åkesson, Torsten
LU
; Bocchetta, Simona
LU
; Doglioni, Caterina
LU
; Hedberg, Vincent
LU
; Jarlskog, Göran
LU
; Kalderon, Charles
LU
; Lytken, Else
LU
; Mankinen, Katja
LU
; Mjörnmark, Ulf
LU
; Poulsen, Trine
LU
; Smirnova, Oxana
LU
; Viazlo, Oleksandr
LU
and Zwalinski, L
(Less)
- author collaboration
- organization
- publishing date
- 2018
- type
- Contribution to journal
- publication status
- published
- subject
- keywords
- Hadron-Hadron scattering (experiments)
- in
- Journal of High Energy Physics
- volume
- 2018
- issue
- 6
- article number
- 22
- publisher
- Springer
- external identifiers
-
- scopus:85048276738
- ISSN
- 1029-8479
- DOI
- 10.1007/JHEP06(2018)022
- language
- English
- LU publication?
- yes
- id
- c21ecd25-9348-47f5-a155-e6c0f4cac182
- date added to LUP
- 2022-03-29 11:06:14
- date last changed
- 2023-04-02 22:56:07
@article{c21ecd25-9348-47f5-a155-e6c0f4cac182,
abstract = {{This paper presents a search for direct electroweak gaugino or gluino pair production with a chargino nearly mass-degenerate with a stable neutralino. It is based on an integrated luminosity of 36.1 fb−1 of pp collisions at s=13 TeV collected by the ATLAS experiment at the LHC. The final state of interest is a disappearing track accompanied by at least one jet with high transverse momentum from initial-state radiation or by four jets from the gluino decay chain. The use of short track segments reconstructed from the innermost tracking layers significantly improves the sensitivity to short chargino lifetimes. The results are found to be consistent with Standard Model predictions. Exclusion limits are set at 95% confidence level on the mass of charginos and gluinos for different chargino lifetimes. For a pure wino with a lifetime of about 0.2 ns, chargino masses up to 460 GeV are excluded. For the strong production channel, gluino masses up to 1.65 TeV are excluded assuming a chargino mass of 460 GeV and lifetime of 0.2 ns.[Figure not available: see fulltext.]. © 2018, The Author(s).}},
author = {{Aaboud, M and Åkesson, Torsten and Bocchetta, Simona and Doglioni, Caterina and Hedberg, Vincent and Jarlskog, Göran and Kalderon, Charles and Lytken, Else and Mankinen, Katja and Mjörnmark, Ulf and Poulsen, Trine and Smirnova, Oxana and Viazlo, Oleksandr and Zwalinski, L}},
issn = {{1029-8479}},
keywords = {{Hadron-Hadron scattering (experiments)}},
language = {{eng}},
number = {{6}},
publisher = {{Springer}},
series = {{Journal of High Energy Physics}},
title = {{Search for long-lived charginos based on a disappearing-track signature in pp collisions at √s=13 TeV with the ATLAS detector}},
url = {{http://dx.doi.org/10.1007/JHEP06(2018)022}},
doi = {{10.1007/JHEP06(2018)022}},
volume = {{2018}},
year = {{2018}},
}