- Library Home /
- Search Collections /
- Open Collections /
- Browse Collections /
- UBC Faculty Research and Publications /
- Search for direct pair production of sleptons and charginos...
Open Collections
UBC Faculty Research and Publications
Search for direct pair production of sleptons and charginos decaying to two leptons and neutralinos with mass splittings near the W-boson mass in √s = 13 TeV pp collisions with the ATLAS detector ATLAS Collaboration
Abstract
A search for the electroweak production of pairs of charged sleptons or charginos decaying into two-lepton final states with missing transverse momentum is presented. Two simplified models of R-parity-conserving supersymmetry are considered: direct pairproduction of sleptons (˜` ˜`), with each decaying into a charged lepton and a χ˜ 0 1 neutralino, and direct pair-production of the lightest charginos (χ˜ ± 1 χ˜ ∓ 1 ), with each decaying into a Wboson and a χ˜ 0 1 . The lightest neutralino (χ˜ 0 1 ) is assumed to be the lightest supersymmetric particle (LSP). The analyses target the experimentally challenging mass regions where m( ˜`) − m(χ˜ 0 1 ) and m(χ˜ ± 1 ) − m(χ˜ 0 1 ) are close to the W-boson mass (‘moderately compressed’ regions). The search uses 139 fb−1 of √ s = 13 TeV proton-proton collisions recorded by the ATLAS detector at the Large Hadron Collider. No significant excesses over the expected background are observed. Exclusion limits on the simplified models under study are reported in the (˜`, χ˜ 0 1 ) and (χ˜ ± 1 , χ˜ 0 1 ) mass planes at 95% confidence level (CL). Sleptons with masses up to 150 GeV are excluded at 95% CL for the case of a mass-splitting between sleptons and the LSP of 50 GeV. Chargino masses up to 140 GeV are excluded at 95% CL for the case of a mass-splitting between the chargino and the LSP down to about 100 GeV
Item Metadata
Title |
Search for direct pair production of sleptons and charginos decaying to two leptons and neutralinos with mass splittings near the W-boson mass in √s = 13 TeV pp collisions with the ATLAS detector
|
Creator | |
Publisher |
Springer Berlin Heidelberg
|
Date Issued |
2023-06-06
|
Description |
A search for the electroweak production of pairs of charged sleptons or charginos
decaying into two-lepton final states with missing transverse momentum is presented.
Two simplified models of R-parity-conserving supersymmetry are considered: direct pairproduction of sleptons (˜`
˜`), with each decaying into a charged lepton and a χ˜
0
1 neutralino,
and direct pair-production of the lightest charginos (χ˜
±
1 χ˜
∓
1
), with each decaying into a Wboson and a χ˜
0
1
. The lightest neutralino (χ˜
0
1
) is assumed to be the lightest supersymmetric
particle (LSP). The analyses target the experimentally challenging mass regions where
m(
˜`) − m(χ˜
0
1
) and m(χ˜
±
1
) − m(χ˜
0
1
) are close to the W-boson mass (‘moderately compressed’
regions). The search uses 139 fb−1 of √
s = 13 TeV proton-proton collisions recorded by the
ATLAS detector at the Large Hadron Collider. No significant excesses over the expected
background are observed. Exclusion limits on the simplified models under study are reported
in the (˜`, χ˜
0
1
) and (χ˜
±
1
, χ˜
0
1
) mass planes at 95% confidence level (CL). Sleptons with masses
up to 150 GeV are excluded at 95% CL for the case of a mass-splitting between sleptons
and the LSP of 50 GeV. Chargino masses up to 140 GeV are excluded at 95% CL for the
case of a mass-splitting between the chargino and the LSP down to about 100 GeV
|
Subject | |
Genre | |
Type | |
Language |
eng
|
Date Available |
2023-09-12
|
Provider |
Vancouver : University of British Columbia Library
|
Rights |
Attribution 4.0 International (CC BY 4.0)
|
DOI |
10.14288/1.0435858
|
URI | |
Affiliation | |
Citation |
Journal of High Energy Physics. 2023 Jun 06;2023(6):31
|
Publisher DOI |
10.1007/JHEP06(2023)031
|
Peer Review Status |
Reviewed
|
Scholarly Level |
Faculty; Researcher
|
Copyright Holder |
The Author(s)
|
Rights URI | |
Aggregated Source Repository |
DSpace
|
Item Media
Item Citations and Data
Rights
Attribution 4.0 International (CC BY 4.0)