22 results on '"Staub, Florian"'
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2. Revisiting RGEs for general gauge theories
- Author
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Schienbein, Ingo, Staub, Florian, Steudtner, Tom, and Svirina, Kseniia
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- 2019
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3. WCxf: An exchange format for Wilson coefficients beyond the Standard Model
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Aebischer, Jason, Brivio, Ilaria, Celis, Alejandro, Evans, Jared A., Jiang, Yun, Kumar, Jacky, Pan, Xuanyou, Porod, Werner, Rosiek, Janusz, Shih, David, Staub, Florian, Straub, David M., van Dyk, Danny, and Vicente, Avelino
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- 2018
- Full Text
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4. Higgs mass predictions of public NMSSM spectrum generators
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Staub, Florian, Athron, Peter, Ellwanger, Ulrich, Gröber, Ramona, Mühlleitner, Margarete, Slavich, Pietro, and Voigt, Alexander
- Published
- 2016
- Full Text
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5. Erratum to “Revisiting RGEs for general gauge theories” [Nucl. Phys. B 939 (2019) 1–48]
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Schienbein, Ingo, Staub, Florian, Steudtner, Tom, and Svirina, Kseniia
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- 2021
- Full Text
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6. Theoretical constraints on supersymmetric models: Perturbative unitarity vs. vacuum stability
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Staub, Florian
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- 2019
- Full Text
- View/download PDF
7. Improved unitarity constraints in Two-Higgs-Doublet-Models
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Goodsell, Mark D. and Staub, Florian
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- 2019
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- View/download PDF
8. Reopen parameter regions in two-Higgs doublet models
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Staub, Florian
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- 2018
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- View/download PDF
9. On the MSSM Higgsino mass and fine tuning
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Ross, Graham G., Schmidt-Hoberg, Kai, and Staub, Florian
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- 2016
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10. A closer look at non-decoupling D-terms
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Staub, Florian
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- 2016
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11. The Higgs mass in the MSSM at two-loop order beyond minimal flavour violation
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Goodsell, Mark D., Nickel, Kilian, and Staub, Florian
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- 2016
- Full Text
- View/download PDF
12. Heavy concerns about the light axino explanation of the 3.5 keV X-ray line
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Colucci, Stefano, Dreiner, Herbi K., Staub, Florian, and Ubaldi, Lorenzo
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- 2015
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13. On the two-loop corrections to the Higgs mass in trilinear R-parity violation
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Dreiner, Herbi K., Nickel, Kilian, and Staub, Florian
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- 2015
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14. Constraints on light mediators: Confronting dark matter searches with B physics
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Schmidt-Hoberg, Kai, Staub, Florian, and Winkler, Martin Wolfgang
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- 2013
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15. Renormalization group equations and matching in a general quantum field theory with kinetic mixing
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Fonseca, Renato M., Malinský, Michal, and Staub, Florian
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- 2013
- Full Text
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16. Soft gamma rays from heavy WIMPs.
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Krauss, Manuel Ernst, Opferkuch, Toby, Staub, Florian, and Winkler, Martin Wolfgang
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We propose an explanation of the galactic center gamma ray excess by supersymmetric WIMPs as heavy as 500 GeV. The lightest neutralino annihilates into vector-like leptons or quarks which cascade decay through intermediate Higgs bosons. Due to the long decay chains, the gamma ray spectrum is much softer than naively expected and peaks at GeV energies. The model predicts correlated diboson and dijet signatures to be tested at the LHC. [ABSTRACT FROM AUTHOR]
- Published
- 2016
- Full Text
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17. SARAH 4: A tool for (not only SUSY) model builders.
- Author
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Staub, Florian
- Subjects
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WOLFRAM language (Computer program language) , *COMPUTER software , *SUPERSYMMETRY , *DIFFERENTIAL equations , *FORCE & energy , *RENORMALIZATION group - Abstract
We present the new version of the Mathematica package SARAH which provides the same features for a non-supersymmetric model as previous versions for supersymmetric models. This includes an easy and straightforward definition of the model, the calculation of all vertices, mass matrices, tadpole equations, and self-energies. Also the two-loop renormalization group equations for a general gauge theory are now included and have been validated with the independent Python code PyR@TE. Model files for FeynArts, CalcHep/CompHep, WHIZARD and in the UFO format can be written, and source code for SPheno for the calculation of the mass spectrum, a set of precision observables, and the decay widths and branching ratios of all states can be generated. Furthermore, the new version includes routines to output model files for Vevacious for both, supersymmetric and non-supersymmetric, models. Global symmetries are also supported with this version and by linking Susyno the handling of Lie groups has been improved and extended. Program summary: Program title: SARAH Catalogue identifier: AEIB_v3_0 Program summary URL: http://cpc.cs.qub.ac.uk/summaries/AEIB_v3_0.html Program obtainable from: CPC Program Library, Queen’s University, Belfast, N. Ireland Licensing provisions: Standard CPC licence, http://cpc.cs.qub.ac.uk/licence/licence.html No. of lines in distributed program, including test data, etc.: 271795 No. of bytes in distributed program, including test data, etc.: 2612867 Distribution format: tar.gz Programming language: Mathematica. Computer: All for which Mathematica is available. Operating system: All for which Mathematica is available. Classification: 11.1, 11.6. Catalogue identifier of previous version: AEIB_v2_1 Journal reference of previous version: Comput. Phys. Commun. 184 (2013) 2604 Does the new version supersede the previous version?: Yes, the new version includes all known features of the previous versions but also provides the new features mentioned below. Nature of problem: A supersymmetric model is usually characterized by the particle content, the gauge sector and the superpotential. It is a time consuming process to obtain all necessary information for phenomenological studies from these basic ingredients. Solution method: Non-supersymmetric models are supported by the new possibility to define not only chiral superfields but also component fields. The renormalization group equations (RGEs) for a non-supersymmetric models are calculated by using the generic formulae for a general quantum field theory. Reasons for new version: New features in the definition of models and a full support of non-supersymmetric models. New output for Vevacious. Summary of revisions: Support of non-supersymmetric models; calculation of renormalization group equations for a general gauge theory; link to Susyno for handling of non-SU(N) gauge groups; support of global symmetries; output of model files for Vevacious; support of aligned VEVs; calculation of gauge dependent parts of RGEs for VEVs in running of supersymmetric and non-supersymmetric models. Restrictions: Only renormalizable terms in the Lagrangian are supported. No support of fields with spin 2 or 3/2. Unusual features: Calculation of non-supersymmetric RGEs includes effects of kinetic mixing as well as gauge dependence of running vacuum expectation values. SARAH is the first tool which can automatically create model files for Vevacious. Fully automatized derivation of all terms in the Lagrangian which are fixed by gauge invariance. Running time: Loading the Standard Model: 1.6 s; calculation of all vertices: 11.8 s; calculation of all RGEs: 130.2 s; output for Vevacious model files: 0.1 s; output of model files in UFO format: 0.8 s; output of model files for FeynArts: 0.1 s; output of model files for CalcHep: 0.8 s; output of model files for WHIZARD: 3.5 s; writing of source code for SPheno: 34.5 s. All times measured on Lenovo X220 with Intel(R) Core(TM) i7-2620M CPU @ 2.70 GHz. [ABSTRACT FROM AUTHOR]
- Published
- 2014
- Full Text
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18. SARAH 3.2: Dirac gauginos, UFO output, and more.
- Author
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Staub, Florian
- Subjects
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MATHEMATICAL analysis , *ROBUST optimization , *MASS spectrometry , *GRAPH theory , *TOPOLOGY , *LAGRANGE equations - Abstract
SARAH is a Mathematica package optimized for the fast, efficient and precise study of supersymmetric models beyond the MSSM: a new model can be defined in a short form and all vertices are derived. This allows SARAH to create model files for FeynArts/FormCalc, CalcHep/CompHep and WHIZARD/O’Mega. The newest version of SARAH now provides the possibility to create model files in the UFO format which is supported by MadGraph 5, MadAnalysis 5, GoSam, and soon by Herwig++. Furthermore, SARAH also calculates the mass matrices, RGEs and 1-loop corrections to the mass spectrum. This information is used to write source code for SPheno in order to create a precision spectrum generator for the given model. This spectrum-generator–generator functionality as well as the output of WHIZARD and CalcHep model files has seen further improvement in this version. Also models including Dirac gauginos are supported with the new version of SARAH, and additional checks for the consistency of the implementation of new models have been created. Program summary: Program title: SARAH Catalogue identifier: AEIB_v2_0 Program summary URL: http://cpc.cs.qub.ac.uk/summaries/AEIB_v2_0.html Program obtainable from: CPC Program Library, Queen’s University, Belfast, N. Ireland Licensing provisions: Standard CPC licence, http://cpc.cs.qub.ac.uk/licence/licence.html No. of lines in distributed program, including test data, etc.: 322411 No. of bytes in distributed program, including test data, etc.: 3629206 Distribution format: tar.gz Programming language: Mathematica. Computer: All for which Mathematica is available. Operating system: All for which Mathematica is available. Classification: 11.1, 11.6. Catalogue identifier of previous version: AEIB_v1_0 Journal reference of previous version: Comput. Phys. Comm. 182 (2011) 808 Does the new version supersede the previous version?: Yes, the new version includes all known features of the previous version but also provides the new features mentioned below. Nature of problem: To use Madgraph for new models it is necessary to provide the corresponding model files which include all information about the interactions of the model. However, the derivation of the vertices for a given model and putting those into model files which can be used with Madgraph is usually very time consuming. Dirac gauginos are not present in the minimal supersymmetric standard model (MSSM) or many extensions of it. Dirac mass terms for vector superfields lead to new structures in the supersymmetric (SUSY) Lagrangian (bilinear mass term between gaugino and matter fermion as well as new D-terms) and modify also the SUSY renormalization group equations (RGEs). The Dirac character of gauginos can change the collider phenomenology. In addition, they come with an extended Higgs sector for which a precise calculation of the 1-loop masses has not happened so far. Solution method: SARAH calculates the complete Lagrangian for a given model whose gauge sector can be any direct product of SU(N) gauge groups. The chiral superfields can transform as any, irreducible representation with respect to these gauge groups and it is possible to handle an arbitrary number of symmetry breakings or particle rotations. Also the gauge fixing is automatically added. Using this information, SARAH derives all vertices for a model. These vertices can be exported to model files in the UFO which is supported by Madgraph and other codes like GoSam, MadAnalysis or ALOHA. The user can also study models with Dirac gauginos. In that case SARAH includes all possible terms in the Lagrangian stemming from the new structures and can also calculate the RGEs. The entire impact of these terms is then taken into account in the output of SARAH to UFO, CalcHep, WHIZARD, FeynArts and SPheno. Reasons for new version: SARAH provides, with this version, the possibility of creating model files in the UFO format. The UFO format is supposed to become a standard format for model files which should be supported by many different tools in the future. Also models with Dirac gauginos were not supported in earlier versions. Summary of revisions: Support of models with Dirac gauginos. Output of model files in the UFO format, speed improvement in the output of WHIZARD model files, CalcHep output supports the internal diagonalization of mass matrices, output of control files for LHPC spectrum plotter, support of generalized PDG numbering scheme PDG.IX, improvement of the calculation of the decay widths and branching ratios with SPheno, the calculation of new low energy observables are added to the SPheno output, the handling of gauge fixing terms has been significantly simplified. Restrictions: SARAH can only derive the Lagrangian in an automatized way for N=1 SUSY models, but not for those with more SUSY generators. Furthermore, SARAH supports only renormalizable operators in the output of model files in the UFO format and also for CalcHep, FeynArts and WHIZARD. Also color sextets are not yet included in the model files for Monte Carlo tools. Dimension 5 operators are only supported in the calculation of the RGEs and mass matrices. Unusual features: SARAH does not need the Lagrangian of a model as input to calculate the vertices. The gauge structure, particle and content and superpotential as well as rotations stemming from gauge symmetry breaking are sufficient. All further information is derived by SARAH on its own. Therefore, the model files are very short and the implementation of new models is fast and easy. In addition, the implementation of a model can be checked for physical and formal consistency. In addition, SARAH can generate Fortran code for a full 1-loop analysis of the mass spectrum in the context for Dirac gauginos. Running time: Measured CPU time for the evaluation of the MSSM using a Lenovo Thinkpad X220 with i7 processor (2.53 GHz). Calculating the complete Lagrangian: 9 s. Calculating all vertices: 51 s. Output of the UFO model files: 49 s. [ABSTRACT FROM AUTHOR]
- Published
- 2013
- Full Text
- View/download PDF
19. A tool box for implementing supersymmetric models
- Author
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Staub, Florian, Ohl, Thorsten, Porod, Werner, and Speckner, Christian
- Subjects
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SUPERSYMMETRY , *NUCLEAR models , *SPECTRUM analysis , *DARK matter , *COLLIDERS (Nuclear physics) , *PHENOMENOLOGICAL theory (Physics) , *RENORMALIZATION group - Abstract
Abstract: We present a framework for performing a comprehensive analysis of a large class of supersymmetric models, including spectrum calculation, dark matter studies and collider phenomenology. To this end, the respective model is defined in an easy and straightforward way using the Mathematica package SARAH. SARAH then generates model files for CalcHep which can be used with micrOMEGAs as well as model files for WHIZARD and O’Mega. In addition, Fortran source code for SPheno is created which facilitates the determination of the particle spectrum using two-loop renormalization group equations and one-loop corrections to the masses. As an additional feature, the generated SPheno code can write out input files suitable for use with HiggsBounds to apply bounds coming from the Higgs searches to the model. Combining all programs provides a closed chain from model building to phenomenology. Program summary Program title: SUSY Phenomenology toolbox. Catalog identifier: AEMN_v1_0. Program summary URL: http://cpc.cs.qub.ac.uk/summaries/AEMN_v1_0.html. Program obtainable from: CPC Program Library, Queen’s University, Belfast, N. Ireland. Licensing provisions: Standard CPC licence, http://cpc.cs.qub.ac.uk/licence/licence.html. No. of lines in distributed program, including test data, etc.: 140206. No. of bytes in distributed program, including test data, etc.: 1319681. Distribution format: tar.gz. Programming language: Autoconf, Mathematica. Computer: PC running Linux, Mac. Operating system: Linux, Mac OS. Classification: 11.6. Nature of problem: Comprehensive studies of supersymmetric models beyond the MSSM is considerably complicated by the number of different tasks that have to be accomplished, including the calculation of the mass spectrum and the implementation of the model into tools for performing collider studies, calculating the dark matter density and checking the compatibility with existing collider bounds (in particular, from the Higgs searches). Solution method: The presented scripts create a framework for the study of SUSY models using the public codes SARAH, SPheno, WHIZARD, CalcHep, MicrOmegas, HiggsBounds and SSP. This includes the download, the configuration and the installation of different tools as well as a script to automatically implement new models into these codes. Unusual features: The study of extended SUSY models is considerably simplified, with the precision of the spectrum calculation matching the precision usually achieved for the MSSM. Running time: Tested on Lenovo X220: The download, configuration and building the tools take 7 min and 40 s. The time needed for the implementation of new models depends on the model under consideration: It takes 42 min for the MSSM including the compilation of all parts. [Copyright &y& Elsevier]
- Published
- 2012
- Full Text
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20. Automatic calculation of supersymmetric renormalization group equations and loop corrections
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Staub, Florian
- Subjects
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SUPERSYMMETRY , *RENORMALIZATION group , *COUPLING constants , *GAUGE field theory , *PARTICLES (Nuclear physics) , *COMPUTER programming , *PROGRAMMING languages - Abstract
Abstract: SARAH is a Mathematica package for studying supersymmetric models. It calculates for a given model the masses, tadpole equations and all vertices at tree-level. This information can be used by SARAH to write model files for CalcHep/CompHep or FeynArts/FormCalc. In addition, the second version of SARAH can derive the renormalization group equations for the gauge couplings, parameters of the superpotential and soft-breaking parameters at one- and two-loop level. Furthermore, it calculates the one-loop self-energies and the one-loop corrections to the tadpoles. SARAH can handle all SUSY models whose gauge sector is a direct product of and gauge groups. The particle content of the model can be an arbitrary number of chiral superfields transforming as any irreducible representation with respect to the gauge groups. To implement a new model, the user has just to define the gauge sector, the particle, the superpotential and the field rotations to mass eigenstates. Program summary: Program title: SARAH Catalogue identifier: AEIB_v1_0 Program summary URL: http://cpc.cs.qub.ac.uk/summaries/AEIB_v1_0.html Program obtainable from: CPC Program Library, Queen''s University, Belfast, N. Ireland Licensing provisions: Standard CPC licence, http://cpc.cs.qub.ac.uk/licence/licence.html No. of lines in distributed program, including test data, etc.: 97 577 No. of bytes in distributed program, including test data, etc.: 2 009 769 Distribution format: tar.gz Programming language: Mathematica Computer: All systems that Mathematica is available for Operating system: All systems that Mathematica is available for Classification: 11.1, 11.6 Nature of problem: A supersymmetric model is usually characterized by the particle content, the gauge sector and the superpotential. It is a time consuming process to obtain all necessary information for phenomenological studies from these basic ingredients. Solution method: SARAH calculates the complete Lagrangian for a given model whose gauge sector can be any direct product of gauge groups. The chiral superfields can transform as any, irreducible representation with respect to these gauge groups and it is possible to handle an arbitrary number of symmetry breakings or particle rotations. Also the gauge fixing terms can be specified. Using this information, SARAH derives the mass matrices and Feynman rules at tree-level and generates model files for CalcHep/CompHep and FeynArts/FormCalc. In addition, it can calculate the renormalization group equations at one- and two-loop level and the one-loop corrections to the one- and two-point functions. Unusual features: SARAH just needs the superpotential and gauge sector as input and not the complete Lagrangian. Therefore, the complete implementation of new models is done in some minutes. Running time: Measured CPU time for the evaluation of the MSSM on an Intel Q8200 with 2.33 GHz. Calculating the complete Lagrangian: 12 seconds. Calculating all vertices: 75 seconds. Calculating the one- and two-loop RGEs: 50 seconds. Calculating the one-loop corrections: 7 seconds. Writing a FeynArts file: 1 second. Writing a CalcHep/CompHep file: 6 seconds. Writing the LaTeX output: 1 second. [Copyright &y& Elsevier]
- Published
- 2011
- Full Text
- View/download PDF
21. From superpotential to model files for FeynArts and CalcHep/CompHep
- Author
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Staub, Florian
- Subjects
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POTENTIAL theory (Physics) , *SUPERSYMMETRY , *GAUGE field theory , *LAGRANGIAN functions , *CP violation , *FLAVOR in particle physics , *MATRICES (Mathematics) - Abstract
Abstract: SARAH is a Mathematica package for building and studying supersymmetric models. It calculates for a given superpotential and gauge sector the full Lagrangian of a model. With the new version of SARAH it is possible to calculate automatically all interactions for the different eigenstates and write model files for FeynArts and CompHep/CalcHep. In addition, the tadpole equations are calculated, gauge fixing terms can be given and ghost interactions are added, particles can be integrated out and non-supersymmetric limits of the theory can be chosen. CP and flavor violation can easily be switched on or off. [Copyright &y& Elsevier]
- Published
- 2010
- Full Text
- View/download PDF
22. Running soft parameters in SUSY models with multiple gauge factors
- Author
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Fonseca, Renato M., Malinský, Michal, Porod, Werner, and Staub, Florian
- Subjects
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RENORMALIZATION group , *GAUGE field theory , *ABELIAN groups , *STATISTICAL mechanics , *FIELD theory (Physics) , *GROUP theory - Abstract
Abstract: We generalize the two-loop renormalization group equations for the parameters of the softly broken SUSY gauge theories given in the literature to the most general case when the gauge group contains more than a single Abelian gauge factor. The complete method is illustrated at two-loop within a specific example and compared to some of the previously proposed partial treatments. [Copyright &y& Elsevier]
- Published
- 2012
- Full Text
- View/download PDF
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