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We present a fit to the 2012 LHC Higgs data in different supersymmetric frameworks using naturalness as a guiding principle. We consider the MSSM and its D-term and F-term extensions that can raise the tree-level Higgs mass. When adding an…

高能物理 - 唯象学 · 物理学 2012-12-07 Raffaele Tito D'Agnolo , Eric Kuflik , Marco Zanetti

We perform a parameter fit in the Standard Model Effective Field Theory (SMEFT) with an emphasis on using regularized linear regression to tackle the issue of the large number of parameters in the SMEFT. In regularized linear regression a…

高能物理 - 唯象学 · 物理学 2018-01-17 Christopher W. Murphy

$\texttt{HEPfit}$ is a flexible open-source tool which, given the Standard Model or any of its extensions, allows to $\textit{i)}$ fit the model parameters to a given set of experimental observables; $\textit{ii)}$ obtain predictions for…

We present version 2 of SModelS, a program package for the fast reinterpretation of LHC searches for new physics on the basis of simplified model results. The major novelty of the SModelS v2 series is an extended topology description with a…

The Higgs self-coupling is notoriously intangible at the LHC. It was recently proposed to probe the trilinear Higgs interaction through its radiative corrections to single-Higgs processes. This approach however requires to disentangle these…

高能物理 - 唯象学 · 物理学 2017-09-22 Stefano Di Vita , Christophe Grojean , Giuliano Panico , Marc Riembau , Thibaud Vantalon

In this work, we summarize a global fit study of Type-II two Higgs doublet models (2HDM), and explore the impact of future SM-like Higgs and Z-pole precision measurements on the allowed parameter space. The work is based on the study…

高能物理 - 唯象学 · 物理学 2022-06-01 Ankit Beniwal , Filip Rajec , Markus Tobias Prim , Pat Scott , Wei Su , Martin White , Anthony G. Williams , Alex Woodcock

The recent discovery at the LHC by the CMS and ATLAS collaborations of the Higgs boson presents, at long last, direct probes of the mechanism for electroweak symmetry breaking. While it is clear from the observations that the new particle…

高能物理 - 唯象学 · 物理学 2015-06-05 Matthew R. Buckley , Dan Hooper

A data-driven method for simultaneously extracting a potential Higgs to ZZ to 4e, 4mu, 2e2mu signal and its dominant backgrounds, is presented. The method relies on a combined fit of the 2-lepton, Z*, and 4-lepton invariant masses. The fit…

高能物理 - 实验 · 物理学 2011-09-26 Christos Anastopoulos , Nicolas Kerschen , Stathes Paganis

In this paper we describe the main features of the software package named FITSH, intended to provide a standalone environment for analysis of data acquired by imaging astronomical detectors. The package provides utilities both for the full…

天体物理仪器与方法 · 物理学 2015-06-03 András Pál

The trilinear Higgs coupling $\lambda_{hhh}$ of the detected Higgs boson is an important probe for physics beyond the Standard Model. Correspondingly, improving the precision of the theoretical predictions for this coupling as well as the…

高能物理 - 唯象学 · 物理学 2024-06-27 Henning Bahl , Johannes Braathen , Martin Gabelmann , Georg Weiglein

We present the public python package munuSSM that can be used for phenomenological studies in the context of the $\mu$-from-$\nu$ Supersymmetric Standard Model ($\mu\nu$SSM). The code incorporates the radiative corrections to the neutral…

高能物理 - 唯象学 · 物理学 2021-03-30 Thomas Biekötter

In the global fit of the Standard Model using Gfitter, electroweak precision observables as well as constraints from direct Higgs searches have been compared with state-of-the-art electroweak predictions. We use the most recent results for…

高能物理 - 唯象学 · 物理学 2019-08-14 Martin Goebel

Global SMEFT analyses have become a key interpretation framework for LHC physics, quantifying how well a large set of kinematic measurements agrees with the Standard Model. This agreement is encoded in measured Wilson coefficients and their…

高能物理 - 唯象学 · 物理学 2024-01-31 Ilaria Brivio , Sebastian Bruggisser , Nina Elmer , Emma Geoffray , Michel Luchmann , Tilman Plehn

For a long time, global fits of the electroweak sector of the Standard Model (SM) have been used to exploit measurements of electroweak precision observables at lepton colliders (LEP, SLC), together with measurements at hadron colliders…

高能物理 - 唯象学 · 物理学 2015-06-22 M. Baak , J. Cuth , J. Haller , A. Hoecker , R. Kogler , K. Moenig , M. Schott , J. Stelzer

While the Higgs characterisation programme is well underway, direct signs for new physics beyond the Standard Model remain elusive. Performing a fit of fully differential Higgs production cross sections at the LHC to a subset of…

高能物理 - 唯象学 · 物理学 2017-11-27 Christoph Englert , Roman Kogler , Holger Schulz , Michael Spannowsky

The global electroweak fit of the Standard Model (SM) with Gfitter can be used to constrain yet unknown SM parameters, such as the Higgs mass, but also physics beyond the SM (BSM) via the formalism of oblique parameters. This paper presents…

高能物理 - 唯象学 · 物理学 2010-06-02 Johannes Haller , Gfitter group

The wide range of probes of physics beyond the standard model leads to the need for tools that combine experimental results to make the most robust possible statements about the validity of theories and the preferred regions of their…

高能物理 - 唯象学 · 物理学 2022-09-21 Jonathan M. Cornell

We perform global fits of Two-Higgs-Doublet models with a softly broken $\mathbb{Z}_2$ symmetry to recent results from the LHC detectors CMS and ATLAS, that is signal strengths and direct search limits obtained at $\sqrt{s} = 8$ TeV and…

高能物理 - 唯象学 · 物理学 2018-07-04 Debtosh Chowdhury , Otto Eberhardt

The Starlink Tables Infrastructure Library Tool Set (STILTS) is a powerful suite for astronomical data analysis, particularly useful when dealing with large datasets. However, like other software suites in astronomy its comprehensive syntax…

天体物理仪器与方法 · 物理学 2026-02-27 R. A. Shaw , S. Fotopoulou , M. Taylor , M. Bremer

We outline a method for characterizing deviations from the properties of a Standard Model (SM) Higgs boson. We apply it to current data in order to characterize up to which degree the SM Higgs boson interpretation is consistent with…

高能物理 - 唯象学 · 物理学 2015-06-04 J. R. Espinosa , Christophe Grojean , M. Muhlleitner , Michael Trott