New Bounds on Light Sneutrino Masses: Rare SUSY Signals

Abstract

We study bounds on a neutral component of weak doublet scalar lepton. A typical example of such particle is sneutrinos in supersymmetric models. Using constraints from invisible Higgs decays we place a lower bound of approximately $m_h/2$. We recast a mono-$W/Z$ search, with hadronic vector boson tag in order to bound parameter space in the sneutrino--charged slepton mass plane. We find a lower bound on sneutrinos in the range of 55-100 GeV in the 36 ${\text{fb}}^{-1}$ data set depending on the mass of charged component. We propose a sensitivity search in the hadronic mono-$W/Z$ channel for HL-LHC and discuss both the discovery potential in case an excess is seen and exclusion limit assuming no excess is seen.

21 pages, 9 figures

References in corpus (19)

• The automated computation of tree-level and next-to-leading order differential cross sections, and their matching to parton shower simulations
• Constraints on Dark Matter from Colliders
• General Gauge Mediation
• Search for electroweak production of charginos and sleptons decaying into final states with two leptons and missing transverse momentum in $\sqrt{s}=13$ TeV $pp$ collisions using the ATLAS detector
• Searches for electroweak production of supersymmetric particles with compressed mass spectra in $\sqrt{s}=13$ TeV $pp$ collisions with the ATLAS detector
• Higgs Mass and Unnatural Supersymmetry
• Search for supersymmetry in proton-proton collisions at 13 TeV in final states with jets and missing transverse momentum
• Sneutrino cold dark matter, a new analysis: relic abundance and detection rates
• Search for squarks and gluinos in final states with jets and missing transverse momentum using 139 fb${}^{-1}$ of $\sqrt{s}$ =13 TeV $pp$ collision data with the ATLAS detector
• Searches for physics beyond the standard model with the $M_{T2}$ variable in hadronic final states with and without disappearing tracks in proton-proton collisions at $\sqrt{s}=$ 13 TeV
• Nearly Degenerate Gauginos and Dark Matter at the LHC
• Threshold Resummation for Slepton-Pair Production at Hadron Colliders
• Expectations for the muon g-2 in simplified models with dark matter
• Current status and muon $g-2$ explanation of lepton portal dark matter
• Surveying the Phenomenology of General Gauge Mediation
• Search for new phenomena in final states with large jet multiplicities and missing transverse momentum using $\sqrt{(}s)=13$ TeV proton$-$proton collisions recorded by ATLAS in Run 2 of the LHC
• Degenerate gaugino mass region and mono-boson collider signatures
• Exploring Non-Universal Gauge Mediation
• Sneutrino LSPs in R-parity violating minimal supergravity models

Cited by in corpus (5)

• The decay $B\to K+\nu +\bar{\nu }$ at Belle II and a massless bino in R-parity-violating supersymmetry
• Taking aim at the wino-higgsino plane with the LHC
• Exploring nearly degenerate higgsinos using mono-$Z/W$ signal
• Exploring the phenomenology of weak adjoint scalars in minimal $R$-symmetric models
• Resolving a challenging supersymmetric low-scale seesaw scenario at the ILC