Where the sidewalk ends: jets and missing energy search strategies for the 7 TeV LHC

Alves, Daniele S. M.; Izaguirre, Eder; Wacker, Jay G.

doi:10.1007/jhep10(2011)012

Cited by 55 publications

(52 citation statements)

References 109 publications

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“…Current limits are typically set on constrained two-dimensional planes, which frequently do not represent the diverse available SUSY parameter space and are difficult to understand as limits on physical masses or branching fractions. A large set of simplified models 23,24 have been proposed for aiding in the understanding of these limits, and both ATLAS and CMS have provided exclusion results for several of these models [15][16][17][18][19][20] . This paper demonstrates the application of these simplified model exclusions to a full new physics model using the example of the minimal supergravity (MSUGRA, also known as the CMSSM) [25][26][27][28][29][30] .…”

Section: Introductionmentioning

confidence: 99%

Setting Limits on Supersymmetry Using Simplified Models

Gütschow

Маршалл

2013

JoVE

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Experimental limits on supersymmetry and similar theories are difficult to set because of the enormous available parameter space and difficult to generalize because of the complexity of single points. Therefore, more phenomenological, simplified models are becoming popular for setting experimental limits, as they have clearer physical interpretations. The use of these simplified model limits to set a real limit on a concrete theory has not, however, been demonstrated. This paper recasts simplified model limits into limits on a specific and complete supersymmetry model, minimal supergravity. Limits obtained under various physical assumptions are comparable to those produced by directed searches. A prescription is provided for calculating conservative and aggressive limits on additional theories. Using acceptance and efficiency tables along with the expected and observed numbers of events in various signal regions, LHC experimental results can be recast in this manner into almost any theoretical framework, including nonsupersymmetric theories with supersymmetry-like signatures. Video LinkThe video component of this article can be found at

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Section: Introductionmentioning

confidence: 99%

Setting Limits on Supersymmetry Using Simplified Models

Gütschow

Маршалл

2013

JoVE

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“…In this section we go into further detail by giving the experimental perspective on simplified models. We begin with a specific example to illustrate this perspective and then distill three important experimental motivations for their development, drawing on suggestions in (Alwall et al 2009), (Alves et al 2011), and (LHC New Physics Working Group 2012).…”

Section: Experimentalist Perspectives On Simplified Modelsmentioning

confidence: 99%

“…Initial BSM searches at the LHC were based primarily on strategies developed for Standard Model searches (searches for the Higgs in particular) or extended strategies appropriate for particular benchmark models, e.g. the MSSM (Alves et al 2011). Such strategies may however be inadequate to revealing other (non-MSSM or non-SM-like) BSM physics, giving rise to an important source of experimental risk, namely that the LHC may be producing BSM particles which remain undetected because of the particular search strategies employed.…”

Section: Experimentalist Perspectives On Simplified Modelsmentioning

confidence: 99%

Simplified models: a different perspective on models as mediators

McCoy

Massimi

2017

Euro Jnl Phil Sci

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We introduce a novel point of view on the "models as mediators" framework in order to emphasize certain important epistemological questions about models in science which have so far been little investigated. To illustrate how this perspective can help answer these kinds of questions, we explore the use of simplified models in high energy physics research beyond the Standard Model. We show in detail how the construction of simplified models is grounded in the need to mitigate pressing epistemic problems concerning the uncertainty inherent in the present theoretical and experimental contexts.

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“…Both of these analyses are the most standard SUSY searches for typical gluino or first-or second-generation squark pair production modes in R-parity conserving SUSY scenarios. We aim to compare the ADM models with the ordinary SUSY models, represented by simplified models [36,37] addition, we do not consider gluino and slepton/sneutrino LOSPs, or the constraints on lle c operators. A more exhaustive analysis including these other cases is very interesting for future work.…”

Section: Lhc Constraintsmentioning

confidence: 99%

Flavor and collider signatures of asymmetric dark matter

Kim

Zurek

2014

Phys. Rev. D

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We consider flavor constraints on, and collider signatures of, asymmetric dark matter (ADM) via higher dimension operators. In the supersymmetric models we consider, R-parity-violating (RPV) operators carrying B − L interact with n dark matter particles X through an interaction of the formThis interaction ensures that the lightest ordinary supersymmetric particle is unstable to decay into the X sector, leading to a higher multiplicity of final state particles and reduced missing energy at a collider. Flavor-violating processes place constraints on the scale of the higher dimension operator, impacting whether the LOSP decays promptly. While the strongest limitations on RPV from n −n oscillations and proton decay do not apply to ADM, we analyze the constraints from meson mixing, μ − e conversion, μ → 3e and b → sl þ l − . We show that these flavor constraints, even in the absence of flavor symmetries, allow parameter space for prompt decay to the X sector, with additional jets and leptons in exotic flavor combinations. We study the constraints from existing 8 TeV LHC Supersymmetry (SUSY) searches with (i) 2-6 jets plus missing energy and (ii) 1-2 leptons, 3-6 jets plus missing energy, comparing the constraints on ADM-extended supersymmetry with the usual supersymmetric simplified models.

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Where the sidewalk ends: jets and missing energy search strategies for the 7 TeV LHC

Cited by 55 publications

References 109 publications

Setting Limits on Supersymmetry Using Simplified Models

Setting Limits on Supersymmetry Using Simplified Models

Simplified models: a different perspective on models as mediators

Flavor and collider signatures of asymmetric dark matter

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