Search for direct pair production of sleptons and charginos decaying to two leptons and neutralinos with mass splittings near the W-boson mass in $$ \sqrt{s} $$ = 13 TeV pp collisions with the ATLAS detector
R parity
transverse momentum: missing-energy
lepton
Chargino: direct production
13000 GeV-cms
slepton: direct production
chargino: direct production
Transverse momentum: missing-energy
QC770-798
Conservation law
7. Clean energy
Atomic
01 natural sciences
Subatomär fysik
Particle and Plasma Physics
neutralino
Electroweak interaction
info:eu-repo/classification/ddc/530
Chargino: mass: lower limit
LSP
dilepton: final state
Particle physics
Settore FIS/01 - FISICA SPERIMENTALE
Nuclear and plasma physics
CERN LHC Coll
Particle and high energy physics
Mathematical physics
Slepton: mass: lower limit
Physical Sciences
slepton: mass: lower limit
slepton, pair production
transverse momentum, missing-energy
p p: scattering
[PHYS.HEXP] Physics [physics]/High Energy Physics - Experiment [hep-ex]
p p, scattering
Hadron-Hadron Scattering , Supersymmetry
up, mass
TeV
sparticle
Slepton: pair production
Hadron-Hadron Scattering
P p: colliding beams
500
Molecular
supersymmetry: parameter space
mass difference
620
Hadron-Hadron scattering
Supersymmetry
p p: colliding beams
GeV
510
High Energy Physics - Experiment
slepton: pair production
High Energy Physics - Experiment (hep-ex)
Subatomic Physics
[PHYS.HEXP]Physics [physics]/High Energy Physics - Experiment [hep-ex]
Chargino: pair production
chargino, mass
Mathematical Physics
hadron-hadron scattering
neutralino: LSP
Quantum Physics
Particle and High Energy Physics
ATLAS
Nuclear and Plasma Physics
Nuclear & Particles Physics
520
chargino: pair production
P p: scattering
Slepton: direct production
Neutralino: LSP
Hadron-Hadron Scattering; Supersymmetry
FOS: Physical sciences
530
info:eu-repo/classification/ddc/500.2
Nuclear and particle physics. Atomic energy. Radioactivity
0103 physical sciences
conservation law
Nuclear
Experimental results
High energy physics
Mass difference
chargino: mass: lower limit
Dilepton: final state
electroweak interaction
background
Matemática física y química
Sparticle: pair production
Supersymmetry: parameter space
Física
540
sparticle: pair production
Background
supersymmetry
experimental results
DOI:
10.1007/jhep06(2023)031
Publication Date:
2023-06-13T14:01:52Z
AUTHORS (2899)
ABSTRACT
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 pair-production of sleptons $$ \left(\overset{\sim }{\ell}\overset{\sim }{\ell}\right) $$
ℓ
~
ℓ
~
, with each decaying into a charged lepton and a $$ {\overset{\sim }{\chi}}_1^0 $$
χ
~
1
0
neutralino, and direct pair-production of the lightest charginos $$ \left({\overset{\sim }{\chi}}_1^{\pm }{\overset{\sim }{\chi}}_1^{\mp}\right) $$
χ
~
1
±
χ
~
1
∓
, with each decaying into a W-boson and a $$ {\overset{\sim }{\chi}}_1^0 $$
χ
~
1
0
. The lightest neutralino $$ \left({\overset{\sim }{\chi}}_1^0\right) $$
χ
~
1
0
is assumed to be the lightest supersymmetric particle (LSP). The analyses target the experimentally challenging mass regions where $$ m\left(\overset{\sim }{\ell}\right)-m\left({\overset{\sim }{\chi}}_1^0\right) $$
m
ℓ
~
−
m
χ
~
1
0
and $$ m\left({\overset{\sim }{\chi}}_1^{\pm}\right)-m\left({\overset{\sim }{\chi}}_1^0\right) $$
m
χ
~
1
±
−
m
χ
~
1
0
are close to the W-boson mass (‘moderately compressed’ regions). The search uses 139 fb−1 of $$ \sqrt{s} $$
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 $$ \left(\overset{\sim }{\ell },{\overset{\sim }{\chi}}_1^0\right) $$
ℓ
~
χ
~
1
0
and $$ \left({\overset{\sim }{\chi}}_1^{\pm }{\overset{\sim }{\chi}}_1^0\right) $$
χ
~
1
±
χ
~
1
0
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.
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CITATIONS (24)
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