scikit-hep/iminuit: v2.8.4

Dembinski, H.-P.; Ongmongkolkul, P.; Deil, C.; Hurtado, David Ménendez; Schreiner, Henry; Feickert, M.; Andrew, Andrew; Burr, C.; Watson, Jason; Rost, Fabian; Pearce, A.; Geiger, Lukas; Wiedemann, Bernhard M.; Gohlke, Christoph; Gonzalo,; Drotleff, Jonas; Eschle, J.; Neste, Ludwig; Gorelli, Marco; Baak, M. A.; Zapata, Óscar; odidev,

doi:10.5281/zenodo.5561211

Cited by 4 publications

(5 citation statements)

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“…The work of JJ was supported in part by the Indonesian Institute of Sciences (which later became the National Research and Innovation Agency) through Research Support Facility Program. PU would like to thank P. Ongmongkolkul for helpful discussions on the iminuit package [64]. PU also acknowledges the National Science and Technology Development Agency, National e-Science Infrastructure Consortium, Chulalongkorn University, and the Chulalongkorn Academic Advancement into Its 2nd Century Project (Thailand) for providing computing infrastructure that has contributed to the results reported within this paper.…”

Section: Acknowledgmentsmentioning

confidence: 98%

Zee model with quasidegenerate neutrino masses and where to find it

Primulando,

Julio,

Uttayarat

2022

Preprint

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We present a Zee model with a family dependent Z2 symmetry for radiative neutrino masses. Our motivation is to get a model that correctly describes neutrino oscillation phenomena, while at the same time offers definite predictions. The imposed Z2 symmetry greatly reduces the number of free parameters in the model. These parameters are then determined from the neutrino data, from which one can study its outcomes. Our setup only admits quasidegenerate neutrino masses with the sum of neutrino masses between 100 and 130 meV, the effective Majorana mass between 20 and 40 meV, and the effective electron neutrino mass between 48 and 53 meV. The ratio of the vacuum expectation values of the Higgs doublets, tan β, is found to be tan β 0.5 and tan β 10. The former is ruled out by lepton flavor violation (LFV) processes, such as µ → eγ and µ → e conversion, which are determined up to two loops. For the latter, these LFV processes are within reach of the next generation of experiments. Moreover, for tan β 10, the couplings of heavy neutral scalars to dimuon are significant. If they are sufficiently light, i.e., 200 GeV, collider search for their decays into muon pair provides a stronger constraint on most parts of the model parameter space than the LFV ones.

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Section: Acknowledgmentsmentioning

confidence: 98%

Zee model with quasidegenerate neutrino masses and where to find it

Primulando,

Julio,

Uttayarat

2022

Preprint

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“…As in ref. [3], we define a sub-set of the free fit parameters for each channel and vary their mean values within the uncertainty provided by our IMinuit [15] fit or as stated in the papers. For more details about the uncertainty estimates for the individual channels, we refer to ref.…”

Section: Jhep04(2022)119mentioning

confidence: 99%

“…For the inclusion of these channels, first we need to identify all the possible intermediate structures. Then, if the data points are available, we can perform a fit using the python package IMinuit [15]. Below, we provide additional details concerning the method used for the computation of the fit for each of these new channels.…”

Section: B Details Of the Hadronic Fit Calculationmentioning

confidence: 99%

“…We explicitly calculate the Z Q width to specific hadronic final states following the same procedure outlined in [3] fitting the available e + e − data using IMinuit [15]. Many of those fits are based on state-of-the-art hadronic current parametrizations of e + e − annihilation processes [16,17], and all fits are updated to the most recent data.…”

Section: Introductionmentioning

confidence: 99%

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A robust description of hadronic decays in light vector mediator models

Foguel

Reimitz

Funchal

2022

J. High Energ. Phys.

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Abelian U(1) gauge group extensions of the Standard Model represent one of the most minimal approaches to solve some of the most urgent particle physics questions and provide a rich phenomenology in various experimental searches. In this work, we focus on baryophilic vector mediator models in the MeV-to-GeV mass range and, in particular, present, for the first time, gauge vector field decays into almost arbitrary hadronic final states. Using only very little theoretical approximations, we rigorously follow the vector meson dominance theory in our calculations. We study the effect on the total and partial decay widths, the branching ratios, and not least on the present (future) experimental limits (reach) on (for) the mass and couplings of light vector particles in different models. We compare our results to current results in the literature. Our calculations are publicly available in a python package to compute various vector particle decay quantities in order to describe leptonic as well as hadronic decay signatures for experimental searches.

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“…python package IMinuit [15]. Below, we provide additional details concerning the method used for the computation of the fit for each of these new channels.…”

Section: R Kmentioning

confidence: 99%

A Robust Description of Hadronic Decays in Light Vector Mediator Models

Foguel,

Reimitz,

Funchal

2022

Preprint

View full text Add to dashboard Cite

Abelian U (1) gauge group extensions of the Standard Model represent one of the most minimal approaches to solve some of the most urgent particle physics questions and provide a rich phenomenology in various experimental searches. In this work, we focus on baryophilic vector mediator models in the MeV-to-GeV mass range and, in particular, present, for the first time, gauge vector field decays into almost arbitrary hadronic final states. Using only very little theoretical approximations, we rigorously follow the vector meson dominance theory in our calculations. We study the effect on the total and partial decay widths, the branching ratios, and not least on the present (future) experimental limits (reach) on (for) the mass and couplings of light vector particles in different models. We compare our results to current results in the literature. Our calculations are publicly available in a python package to compute various vector particle decay quantities in order to describe leptonic as well as hadronic decay signatures for experimental searches.

show abstract

scikit-hep/iminuit: v2.8.4

Cited by 4 publications

References 0 publications

Zee model with quasidegenerate neutrino masses and where to find it

Zee model with quasidegenerate neutrino masses and where to find it

A robust description of hadronic decays in light vector mediator models

A Robust Description of Hadronic Decays in Light Vector Mediator Models

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