The implementation of the renormalized complex MSSM in FeynArts and FormCalc

Fritzsche, T.; Hahn, Thomas; Heinemeyer, S.; Pahlen, F. von der; Rzehak, Heidi; Schappacher, C.

doi:10.1016/j.cpc.2014.02.005

Cited by 64 publications

(81 citation statements)

References 65 publications

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“…In the POWHEG method [31], these processes must also be calculated with colour and spin correlations. We computed the traces of Dirac matrices with FormCalc 8.4 [38] and checked our results against the literature and Madgraph 5 [39].…”

Section: Nlo Calculation Of Prompt Photon Production and Matching To Psmentioning

confidence: 99%

Prompt photon production and photon-jet correlations at the LHC

Klasen

Klein-Bösing

Poppenborg

2018

J. High Energ. Phys.

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Next-to-leading order predictions matched to parton showers are compared with recent ATLAS data on isolated photon production and CMS data on associated photon and jet production in pp and pPb collisions at different centre-of-mass energies of the LHC. We find good agreement and, as expected, considerably reduced scale uncertainties compared to previous theoretical calculations. Predictions are made for the ratio of inclusive photons over decay photons R γ , an important quantity to evaluate the significance of additional photon sources, e.g. thermal radiation from a Quark-Gluon-Plasma, and for distributions in the parton momentum fraction in lead ions x obs Pb , that could be determined by ALICE, ATLAS, CMS and LHCb in ongoing analyses of photon+jet production in pPb collisions at √ s N N = 5.02 TeV. These data should have an important impact on the determination of nuclear effects such as shadowing at low x.

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Section: Nlo Calculation Of Prompt Photon Production and Matching To Psmentioning

confidence: 99%

Prompt photon production and photon-jet correlations at the LHC

Klasen

Klein-Bösing

Poppenborg

2018

J. High Energ. Phys.

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“…The renormalization scheme defining the remaining renormalization constants is similar to the scheme of refs. [63][64][65][66][67][68]. It implements an on-shell renormalization of the MSSM [69] as far as possible.…”

Section: Renormalization Constants and Schemementioning

confidence: 99%

“…The creation and selection of the Feynman diagrams is done with FeynArts [70], using a preliminary model file of ref. [66]. The calculation of the renormalization constants is JHEP02(2014)070 done with FormCalc [71].…”

Section: Renormalization Constants and Schemementioning

confidence: 99%

Two-loop corrections to the muon magnetic moment from fermion/sfermion loops in the MSSM: detailed results

Fargnoli

Gnendiger

Paßehr

et al. 2014

J. High Energ. Phys.

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Recently, first results were presented for two-loop corrections to the muon (g − 2) from fermion/sfermion loops in the MSSM. These corrections were shown to be generally large and even logarithmically enhanced for heavy sfermions. Here, full details of the calculation and analytical results are presented. Also, a very compact formula is provided which can be easily implemented and serves as a good approximation of the full result as a function of the fourteen most important input parameters. Finally, a thorough discussion of the numerical behaviour of the fermion/sfermion-loop corrections to (g − 2) µ is given. The discussion includes the case of very heavy SUSY masses as well as experimentally allowed scenarios with very light SUSY masses.

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“…[58] and will be included into the code FeynHiggs. These results were obtained in a renormalization scheme [39,[59][60][61][62][63][64][65] which has been shown to yield stable results over nearly the full cMSSM parameters space. In this work we take another step in the direction of completion of the calculation of all two-body decays at the one-loop level in the cMSSM in this stable and reliable renormalization scheme: we calculate all two-body decay modes of the Higgs bosons to charginos and neutralinos in the cMSSM.…”

Section: Introductionmentioning

confidence: 99%

Higgs decays into charginos and neutralinos in the complex MSSM: a full one-loop analysis

Heinemeyer

Schappacher

2015

Eur. Phys. J. C

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For the search for additional Higgs bosons in the minimal supersymmetric standard model (MSSM) as well as for future precision analyses in the Higgs sector a precise knowledge of their decay properties is mandatory. We evaluate all two-body decay modes of the Higgs bosons into charginos and neutralinos in the MSSM with complex parameters (cMSSM). The evaluation is based on a full one-loop calculation of all decay channels, also including hard QED radiation. We restricted ourselves to a version of our renormalization scheme which is valid for |M 1 | < |M 2 |, |μ| and M 2 = μ to simplify the analysis, even though we are able to switch to other parameter regions. The dependence of the Higgs boson predictions on the relevant cMSSM parameters is analyzed numerically. We find sizable contributions to many partial decay widths. They are roughly of 10 % of the tree-level results, but they can go up to 20 % or higher. The full one-loop contributions are important for the correct interpretation of heavy Higgs boson search results at the LHC and, if kinematically allowed, at a future linear e + e − collider. There are plans to implement the evaluation of the branching ratios of the Higgs bosons into the Fortran code FeynHiggs, together with an automated choice of the renormalization scheme valid for the full cMSSM parameter space.

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The implementation of the renormalized complex MSSM in FeynArts and FormCalc

Cited by 64 publications

References 65 publications

Prompt photon production and photon-jet correlations at the LHC

Prompt photon production and photon-jet correlations at the LHC

Two-loop corrections to the muon magnetic moment from fermion/sfermion loops in the MSSM: detailed results

Higgs decays into charginos and neutralinos in the complex MSSM: a full one-loop analysis

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