Search for Nearly Mass-Degenerate Higgsinos Using Low-Momentum Mildly Displaced Tracks in pp Collisions at sqrt[s]=13 TeV with the ATLAS Detector
Aad, G. ; Åkesson, T.P.A. LU
; Astrand, K.S.V.
LU
; Doglioni, C.
LU
; Ekman, P.A.
LU
; Hedberg, V.
LU
; Herde, H.
LU
; Konya, B.
LU
; Lytken, E.
LU
and Poettgen, R.
LU
, et al.
(2024)
In Physical Review Letters
132(22).
- Abstract
- Higgsinos with masses near the electroweak scale can solve the hierarchy problem and provide a dark matter candidate, while detecting them at the LHC remains challenging if their mass splitting is O(1 GeV). This Letter presents a novel search for nearly mass-degenerate Higgsinos in events with an energetic jet, missing transverse momentum, and a low-momentum track with a significant transverse impact parameter using 140 fb^{-1} of proton-proton collision data at sqrt[s]=13 TeV collected by the ATLAS experiment. For the first time since LEP, a range of mass splittings between the lightest charged and neutral Higgsinos from 0.3 to 0.9 GeV is excluded at 95% confidence level, with a maximum reach of approximately 170 GeV in the Higgsino... (More)
- Higgsinos with masses near the electroweak scale can solve the hierarchy problem and provide a dark matter candidate, while detecting them at the LHC remains challenging if their mass splitting is O(1 GeV). This Letter presents a novel search for nearly mass-degenerate Higgsinos in events with an energetic jet, missing transverse momentum, and a low-momentum track with a significant transverse impact parameter using 140 fb^{-1} of proton-proton collision data at sqrt[s]=13 TeV collected by the ATLAS experiment. For the first time since LEP, a range of mass splittings between the lightest charged and neutral Higgsinos from 0.3 to 0.9 GeV is excluded at 95% confidence level, with a maximum reach of approximately 170 GeV in the Higgsino mass. (Less)
Please use this url to cite or link to this publication:
https://lup.lub.lu.se/record/26264b11-72b3-409d-a876-307daea49012
- author
- Aad, G.
; Åkesson, T.P.A.
LU
; Astrand, K.S.V.
LU
; Doglioni, C.
LU
; Ekman, P.A.
LU
; Hedberg, V.
LU
; Herde, H.
LU
; Konya, B.
LU
; Lytken, E.
LU
and Poettgen, R.
LU
, et al. (More)
- Aad, G.
; Åkesson, T.P.A.
LU
; Astrand, K.S.V.
LU
; Doglioni, C.
LU
; Ekman, P.A.
LU
; Hedberg, V.
LU
; Herde, H.
LU
; Konya, B.
LU
; Lytken, E.
LU
; Poettgen, R.
LU
; Simpson, N.D.
LU
; Smirnova, O.
LU
; Wallin, E.J.
LU
and Zwalinski, L.
(Less)
- author collaboration
- organization
- publishing date
- 2024
- type
- Contribution to journal
- publication status
- published
- subject
- keywords
- article
- in
- Physical Review Letters
- volume
- 132
- issue
- 22
- article number
- 221801
- publisher
- American Physical Society
- external identifiers
-
- scopus:85196232839
- pmid:38877905
- ISSN
- 1079-7114
- DOI
- 10.1103/PhysRevLett.132.221801
- language
- English
- LU publication?
- yes
- id
- 26264b11-72b3-409d-a876-307daea49012
- date added to LUP
- 2024-08-23 14:53:58
- date last changed
- 2024-08-24 03:06:08
@article{26264b11-72b3-409d-a876-307daea49012,
abstract = {{Higgsinos with masses near the electroweak scale can solve the hierarchy problem and provide a dark matter candidate, while detecting them at the LHC remains challenging if their mass splitting is O(1 GeV). This Letter presents a novel search for nearly mass-degenerate Higgsinos in events with an energetic jet, missing transverse momentum, and a low-momentum track with a significant transverse impact parameter using 140 fb^{-1} of proton-proton collision data at sqrt[s]=13 TeV collected by the ATLAS experiment. For the first time since LEP, a range of mass splittings between the lightest charged and neutral Higgsinos from 0.3 to 0.9 GeV is excluded at 95% confidence level, with a maximum reach of approximately 170 GeV in the Higgsino mass.}},
author = {{Aad, G. and Åkesson, T.P.A. and Astrand, K.S.V. and Doglioni, C. and Ekman, P.A. and Hedberg, V. and Herde, H. and Konya, B. and Lytken, E. and Poettgen, R. and Simpson, N.D. and Smirnova, O. and Wallin, E.J. and Zwalinski, L.}},
issn = {{1079-7114}},
keywords = {{article}},
language = {{eng}},
number = {{22}},
publisher = {{American Physical Society}},
series = {{Physical Review Letters}},
title = {{Search for Nearly Mass-Degenerate Higgsinos Using Low-Momentum Mildly Displaced Tracks in pp Collisions at sqrt[s]=13 TeV with the ATLAS Detector}},
url = {{http://dx.doi.org/10.1103/PhysRevLett.132.221801}},
doi = {{10.1103/PhysRevLett.132.221801}},
volume = {{132}},
year = {{2024}},
}