SUSY Les Houches Accord: Interfacing SUSY Spectrum Calculators, Decay Packages, and Event Generators

Skands, Peter; Allanach, B. C.; Baer, Howard; Balázs, Csaba; Bélanger, G.; Boudjema, F.; Djouadi, Abdelhak; Godbole, Rohini M.; Guasch, Jaume; Heinemeyer, S.; Kilian, Wolfgang; Kneur, Jean-Loïc; Kraml, S.; Moortgat, F.; Moretti, Stefano; Mühlleitner, Margarete; Porod, W.; Pukhov, A.; Richardson, Peter; Schumann, Steffen; Slavich, Pietro; Spira, M.; Weiglein, G.

doi:10.1088/1126-6708/2004/07/036

Cited by 524 publications

(480 citation statements)

References 31 publications

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“…In other words, FeynRules creates two real external tensorial parameters, the real and imaginary parts of the matrix, and one internal complex tensorial parameter for the matrix UW itself. The user must specify the name of a Les Houches block [51,52] which will contain the numerical values associated with the elements of the matrix (see Section 6.1.4). In the example above, we impose the real part of the elements of U w to be stored in a block named WEAKMIX and their imaginary part in a block IMWEAKMIX.…”

Section: Massbasis = Value Gaugebasismentioning

confidence: 99%

FeynRules 2.0 — A complete toolbox for tree-level phenomenology

Alloul

Christensen

Degrande

et al. 2014

Computer Physics Communications

2,417

1,904

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FeynRules is a Mathematica-based package which addresses the implementation of particle physics models, which are given in the form of a list of fields, parameters and a Lagrangian, into high-energy physics tools. It calculates the underlying Feynman rules and outputs them to a form appropriate for various programs such as CalcHep, FeynArts, MadGraph, Sherpa and Whizard. Since the original version, many new features have been added: support for two-component fermions, spin-3/2 and spin-2 fields, superspace notation and calculations, automatic mass diagonalization, completely general FeynArts output, a new universal FeynRules output interface, a new Whizard interface, automatic 1 → 2 decay width calculation, improved speed and efficiency, new guidelines for validation and a new web-based validation package. With this feature set, FeynRules enables models to go from theory to simulation and comparison with experiment quickly, efficiently and accurately.

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Section: Massbasis = Value Gaugebasismentioning

confidence: 99%

FeynRules 2.0 — A complete toolbox for tree-level phenomenology

Alloul

Christensen

Degrande

et al. 2014

Computer Physics Communications

2,417

1,904

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“…Spectrum and decay information is communicated via the SUSY Les Houches Accord [12]. For given values of m~l R and M 2 , M 1 is calculated to solve Eq.…”

Section: Parameter Space Fitting the Cms Excessmentioning

confidence: 99%

“…Higgsinos only couple extremely weakly to selectrons or smuons and so would result in rates that were far too small if they were involved in the chain. 5 Instead of fixing the Lagrangian parameters for the soft SUSY breaking Higgs mass parameters, we calculate them by minimizing the MSSM Higgs potential after fixing M A and the μ parameter to 3500 GeV [12].…”

Section: Fig 4 (Color Online)mentioning

confidence: 99%

Interpreting a CMS excess inlljj+missing-transverse-momentum with the golden cascade of the minimal supersymmetric standard model

2015

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The CMS experiment recently reported an excess consistent with an invariant mass edge in opposite-sign same flavor leptons, when produced in conjunction with at least two jets and missing transverse momentum. We provide an interpretation of the edge in terms of (anti)squark pair production followed by the "golden cascade" decay for one of the squarks:q →χ 0 2 q →llq →χ 0 1 qll in the minimal supersymmetric standard model. A simplified model involving binos, winos, an on-shell slepton, and the first two generations of squarks fits the event rate and the invariant mass edge. We check consistency with a recent ATLAS search in a similar region, finding that much of the good-fit parameter space is still allowed at the 95% confidence level (C.L.). However, a combination of other LHC searches, notably two-lepton stop pair searches and jets plus p T , rule out all of the remaining parameter space at the 95% C.L.

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“…We take the SOFTSUSY2.0 spectrum and link it to PYTHIA with the SUSY Les Houches Accord [57]. For each particle spectrum generated we have simulated 10 fb −1 of data for pp collisions at 14 TeV.…”

Section: Collider Model and Data Generationmentioning

confidence: 99%