Mass spectrum in R-parity violating minimal supergravity and benchmark points

Allanach, B. C.; Bernhardt, M. A.; Dreiner, Herbert K.; Kom, C. H.; Richardson, Peter

doi:10.1103/physrevd.75.035002

Cited by 56 publications

(111 citation statements)

References 118 publications

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“…Particle decays may be suppressed by small couplings or high mass scales, thus resulting in long lifetimes. An example of a small-coupling scenario is supersymmetry with R-parity violation (RPV) [2,3]. The present (largely indirect) constraints on RPV couplings allow the decay of the lightest supersymmetric particle (LSP) as it traverses a particle detector at the LHC.…”

Section: Introductionmentioning

confidence: 99%

Search for massive, long-lived particles using multitrack displaced vertices or displaced lepton pairs inppcollisions ats=8 TeV

Aad¹,

Abbott²,

Abdallah³

et al. 2015

Phys. Rev. D

141

242

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Many extensions of the Standard Model posit the existence of heavy particles with long lifetimes. This article presents the results of a search for events containing at least one long-lived particle that decays at a significant distance from its production point into two leptons or into five or more charged particles. This analysis uses a data sample of proton-proton collisions at ffiffi ffi s p ¼ 8 TeV corresponding to an integrated luminosity of 20.3 fb −1 collected in 2012 by the ATLAS detector operating at the Large Hadron Collider. No events are observed in any of the signal regions, and limits are set on model parameters within supersymmetric scenarios involving R-parity violation, split supersymmetry, and gauge mediation. In some of the search channels, the trigger and search strategy are based only on the decay products of individual long-lived particles, irrespective of the rest of the event. In these cases, the provided limits can easily be reinterpreted in different scenarios.

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Section: Introductionmentioning

confidence: 99%

Search for massive, long-lived particles using multitrack displaced vertices or displaced lepton pairs inppcollisions ats=8 TeV

Aad¹,

Abbott²,

Abdallah³

et al. 2015

Phys. Rev. D

141

242

View full text Add to dashboard Cite

show abstract

“…Owing to an (approximate) Maxwell-Boltzmann distri-bution of the stau velocity, P eff | T f ∼ m e τ 1 T f , we choose P eff = 10 GeV as a representative value. 8 The curves show the annihilation channels with the following final states:…”

Section: Calculation Of the Thermal Relic Stau Abundancementioning

confidence: 99%

Thermal relic abundances of long-lived staus

Pradler¹,

Steffen²

2009

Nuclear Physics B

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In supersymmetric models with a long-lived stau being the lightest Standard Model superpartner, the stau abundance during primordial nucleosynthesis is tightly constrained. Considering the complete set of stau annihilation channels in the minimal supersymmetric Standard Model (MSSM) with real parameters for scenarios in which sparticle coannihilations are negligible, we calculate the decoupling of the lighter stau from the primordial plasma and identify processes which are capable to deplete the resulting stau abundance significantly. We find particularly efficient stau annihilation at the resonance of the heavy CP-even Higgs boson and for a lighter stau with a sizeable left-right mixing due to enhanced stau-Higgs couplings. Even within the constrained MSSM, we encounter both effects leading to exceptionally small values of the resulting stau abundance. Prospects for collider phenomenology are discussed and possible implications of our findings are addressed with emphasis on gravitino dark matter scenarios.

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“…One corresponds to the points withχ Table IV. However, in Scenario III, the LHC phenomenology is somewhat different due to R-parity violation. The LSP is not stable, and then can be the lightest neutralino, light stau, or tau-snetrino [41]. Also, there is no missing energy for sparticle productions and decays at colliders.…”

Section: The Searches For the Electroweak Susy Sector At The Col-mentioning

confidence: 99%

“…In general, the RPV couplings are too small to shift the sparticle masses much [41]. Thus, we just ignore the RPV couplings in Renormalization Group Equation (RGE) running.…”

Section: Numerical Analyses a Setupmentioning

confidence: 99%

Electroweak supersymmetry in the NMSSM

Cheng

2013

Phys. Rev. D

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To explain all the available experimental results, we have proposed the Electroweak Supersymmetry (EWSUSY) previously, where the squarks and/or gluino are heavy around a few TeVs while the sleptons, sneutrinos, Bino, Winos, and/or Higgsinos are light within one TeV. In the Next to Minimal Supersymmetric Standard Model (NMSSM), we perform the systematic χ 2 analyses on parameter space scan for three EWSUSY scenarios: (I) R-parity conservation and one dark matter candidate; (II) R-parity conservation and multi-component dark matter; (III) R-parity violation.We obtain the minimal χ 2 /(degree of freedom) of 10.2/15, 9.6/14, and 9.2/14 respectively for Scenarios I, II, and III. Considering the constraints from the LHC neutralino/chargino and slepton searches, we find that the majority of viable parameter space prefered by the muon anomalous magnetic moment has been excluded except for the parameter space with moderate to large tan β ( 8). Especially, the most favorable parameter space has relatively large tan β, moderate λ, small µ eff , heavy squarks/gluino, and the second lightest CP-even neutral Higgs boson with mass around 125 GeV. In addition, if the left-handed smuon is nearly degenerate with or heavier than Wino, there is no definite bound on Wino mass. Otherwise, the Wino with mass up to ∼ 450 GeV has been excluded. Furthermore, we present several benchmark points for Scenarios I and II, and briefly discuss the prospects of the EWSUSY searches at the 14 TeV LHC and ILC.

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Mass spectrum in R-parity violating minimal supergravity and benchmark points

Cited by 56 publications

References 118 publications

Search for massive, long-lived particles using multitrack displaced vertices or displaced lepton pairs inppcollisions ats=8 TeV

Search for massive, long-lived particles using multitrack displaced vertices or displaced lepton pairs inppcollisions ats=8 TeV

Thermal relic abundances of long-lived staus

Electroweak supersymmetry in the NMSSM

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