Bounds on<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:mi>R</mml:mi></mml:math>-parity violation from resonant slepton production at the LHC

Dreiner, Herbi K.; Stefaniak, Tim

doi:10.1103/physrevd.86.055010

Cited by 24 publications

(28 citation statements)

References 152 publications

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“…However, there are also non-minimal SUSY models with the MSSM particle content with appealing properties. It has been pointed out that the MSSM together with R-parity violation (RpV) [25][26][27][28] can significantly weaken the collider mass limits [29][30][31][32] and provide a rich phenomenology [33][34][35][36]. It is the purpose of this paper to extend the (C)MSSM to allow for the R-parity baryon-number violating operators λ ijkŪ iDjDk and in this framework to determine the allowed stop mass regions, which give (a) the correct Higgs mass, (b) a charge and colour stable vacuum, and (c) fulfil all experimental constraints from flavour observables.…”

Section: Jhep08(2014)142mentioning

confidence: 99%

Resurrecting light stops after the 125 GeV Higgs in the baryon number violating CMSSM

Chamoun

Dreiner

Staub

et al. 2014

J. High Energ. Phys.

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In order to accommodate the observed Higgs boson mass in the CMSSM, the stops must either be very heavy or the mixing in the stop sector must be very large. Lower stop masses, possibly more accessible at the LHC, still give the correct Higgs mass only if the trilinear stop mixing parameter |A t | is in the multi-TeV range. Recently it has been shown that such large stop mixing leads to an unstable electroweak vacuum which spontaneously breaks charge or color. In this work we therefore go beyond the CMSSM and investigate the effects of including baryon number violating operators λ ŪDD on the stop and Higgs sectors. We find that for λ O(0.3) light stop masses as low as 220 GeV are consistent with the observed Higgs mass as well as flavour constraints while allowing for a stable vacuum. The light stop in this scenario is often the lightest supersymmetric particle. We furthermore discuss the importance of the one-loop corrections involving R-parity violating couplings for a valid prediction of the light stop masses.

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Section: Jhep08(2014)142mentioning

confidence: 99%

Resurrecting light stops after the 125 GeV Higgs in the baryon number violating CMSSM

Chamoun

Dreiner

Staub

et al. 2014

J. High Energ. Phys.

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“…As we see, the bound ranges from 3.3 TeV for a substantial coupling, λ 311 = 0.2, to 1.3 TeV for a modest coupling, λ 311 = 0.01. The bound quickly vanishes when reducing the size of the coupling further [165]. The experimental search results are given for aν τ [158], but the opposite flavor lepton searches apply equally to the following coupling combinations which involve aν μ propagator:…”

Section: Sneutrino Lspmentioning

confidence: 99%

R-parity violation at the LHC

Dercks

Dreiner²,

Krauss³

et al. 2017

Eur. Phys. J. C

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We investigate the phenomenology of the MSSM extended by a single R-parity-violating coupling at the unification scale. For all R-parity-violating couplings, we discuss the evolution of the particle spectra through the renormalization group equations and the nature of the lightest supersymmetric particle (LSP) within the CMSSM, as an example of a specific complete supersymmetric model. We use the nature of the LSP to classify the possible signatures. For each possible scenario we present in detail the current LHC bounds on the supersymmetric particle masses, typically obtained using simplified models. From this we determine the present coverage of R-parity-violating models at the LHC. We find several gaps, in particular for a stau-LSP, which is easily obtained in R-parity-violating models. Using the program CheckMATE we recast existing LHC searches to set limits on the parameters of all R-parity-violating CMSSMs. We find that virtually all of them are either more strongly constrained or similarly constrained in comparison to the R-parity-conserving CMSSM, including theŪDD models. For each R-parity-violating CMSSM we then give the explicit lower mass bounds on all relevant supersymmetric particles.

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“…Finally, we define a SR with a high H T requirement and no E miss T requirement. This region is designed to enhance sensitivity to models with R-parity violating SUSY [31] with [32] or without [33,34] leptonically decaying W bosons (the latter type of events have no intrinsic E miss T from undetected particles). The definitions of the signal regions, the data event yields, and the expected backgrounds calculated for each SR, are summarized in table 1.…”

Section: Search Resultsmentioning

confidence: 99%

Search for new physics in events with same-sign dileptons and b-tagged jets in pp collisions at $ \sqrt {s} = 7 $ TeV

Chatrchyan

Khachatryan

Sirunyan

et al. 2012

J. High Energ. Phys.

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A search for new physics is performed using isolated same-sign dileptons with at least two b-quark jets in the final state. Results are based on a 4.98 fb −1 sample of protonproton collisions at a centre-of-mass energy of 7 TeV collected by the CMS detector. No excess above the standard model background is observed. Upper limits at 95% confidence level are set on the number of events from non-standard-model sources. These limits are used to set constraints on a number of new physics models. Information on acceptance and efficiencies are also provided so that the results can be used to confront additional models in an approximate way.

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Bounds onR-parity violation from resonant slepton production at the LHC

Cited by 24 publications

References 152 publications

Resurrecting light stops after the 125 GeV Higgs in the baryon number violating CMSSM

Resurrecting light stops after the 125 GeV Higgs in the baryon number violating CMSSM

R-parity violation at the LHC

Search for new physics in events with same-sign dileptons and b-tagged jets in pp collisions at $ \sqrt {s} = 7 $ TeV

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