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Lilith is a public Python library for constraining new physics from Higgs signal strength measurements. Version 2.0 of Lilith comes with an extensive XML database which includes the ATLAS and CMS Run 2 Higgs results for 36/fb, in addition…

High Energy Physics - Phenomenology · Physics 2020-12-22 Marius Bertrand , Sabine Kraml , Tran Quang Loc , Dao Thi Nhung , Le Duc Ninh

Lilith is a public Python library for constraining new physics from Higgs signal strength measurements. We here present version 2.0 of Lilith together with an updated XML database which includes the current ATLAS and CMS Run 2 Higgs results…

High Energy Physics - Phenomenology · Physics 2019-10-23 Sabine Kraml , Tran Quang Loc , Dao Thi Nhung , Le Duc Ninh

The properties of the observed Higgs boson with mass around 125 GeV can be affected in a variety of ways by new physics beyond the Standard Model (SM). The wealth of experimental results, targeting the different combinations for the…

High Energy Physics - Phenomenology · Physics 2015-10-28 Jeremy Bernon , Beranger Dumont

The ATLAS and CMS collaborations have recently released significant new data on Higgs and diboson production in LHC Run 2. Measurements of Higgs properties have improved in many channels, while kinematic information for $h \to \gamma\gamma$…

High Energy Physics - Phenomenology · Physics 2018-08-01 John Ellis , Christopher W. Murphy , Verónica Sanz , Tevong You

We present the results of a global fit to the Aligned Two-Higgs Doublet Model, assuming that there are no new sources of CP violation beyond the quark mixing matrix. We use the most constraining flavour observables, electroweak precision…

High Energy Physics - Phenomenology · Physics 2021-05-06 Otto Eberhardt , Ana Peñuelas Martínez , Antonio Pich

The most recent LHC data have provided a considerable improvement in the precision with which various Higgs production and decay channels have been measured. Using all available public results from ATLAS, CMS and the Tevatron, we derive for…

High Energy Physics - Phenomenology · Physics 2013-10-30 G. Belanger , B. Dumont , U. Ellwanger , J. F. Gunion , S. Kraml

The program HiggsSignals confronts the predictions of models with arbitrary Higgs sectors with the available Higgs signal rate and mass measurements, resulting in a likelihood estimate. A new version of the program, HiggsSignals-2, is…

High Energy Physics - Phenomenology · Physics 2021-02-24 Philip Bechtle , Sven Heinemeyer , Tobias Klingl , Tim Stefaniak , Georg Weiglein , Jonas Wittbrodt

The properties of the observed Higgs boson with mass around 125 GeV are constrained by a wealth of experimental results targeting different combinations for the production and decay of a Higgs boson. In order to assess the compatibility of…

High Energy Physics - Phenomenology · Physics 2015-05-06 Jeremy Bernon , Beranger Dumont

We provide an update of the global fits of the couplings of the 125.5 GeV Higgs boson using all publicly available experimental results from Run-1 of the LHC as per Summer 2014. The fits are done by means of the new public code Lilith 1.0.…

High Energy Physics - Phenomenology · Physics 2014-10-22 Jeremy Bernon , Beranger Dumont , Sabine Kraml

We use global fits to analyze the most recent Higgs data from ATLAS, CMS and Tevatron and compare the Standard Model (SM) prediction with natural extensions of the SM. In particular we study wide classes of composite Higgs models based on…

High Energy Physics - Phenomenology · Physics 2015-06-05 Marc Montull , Francesco Riva

Off the beaten track of scalar singlet and doublet extensions of the Standard Model, triplets combine an interesting LHC phenomenology with an explanation for neutrino masses. The Georgi-Machacek model falls into this category, but it has…

High Energy Physics - Phenomenology · Physics 2019-01-09 Cheng-Wei Chiang , Giovanna Cottin , Otto Eberhardt

We introduce the public computer code HiggsSignals, which can be used to test the predictions from models with arbitrary Higgs sectors against experimental measurements. Following a brief description of the code, several examples of…

High Energy Physics - Phenomenology · Physics 2013-10-16 Oscar Stål , Tim Stefaniak

In this work, we review the history and current role of global fits in the search for physics beyond the Standard Model~(BSM), including precision tests of the Standard Model (SM). Although BSM global fits were initially focused on minimal…

SModelS is an automatized tool enabling the fast interpretation of simplified model results from the LHC within any model of new physics respecting a $\mathbb{Z}_2$ symmetry. We here present a new version of SModelS that can use the full…

High Energy Physics - Phenomenology · Physics 2021-03-17 Gaël Alguero , Sabine Kraml , Wolfgang Waltenberger

We present preliminary results from the latest global fit analysis of the constrained minimal supersymmetric standard model (CMSSM) performed within the Fittino framework. The fit includes low-energy and astrophysical observables as well as…

We present a software framework for statistical data analysis, called HistFitter, that has been used extensively by the ATLAS Collaboration to analyze big datasets originating from proton-proton collisions at the Large Hadron Collider at…

High Energy Physics - Experiment · Physics 2015-06-23 M. Baak , G. J. Besjes , D. Cote , A. Koutsman , J. Lorenz , D. Short

An updated global fit on the parameter-space of the Aligned Two-Higgs-Doublet model has been performed with the help of the open-source package HEPfit, assuming the Standard-Model Higgs to be the lightest scalar. No new sources of CP…

High Energy Physics - Phenomenology · Physics 2024-03-13 Anirban Karan , Víctor Miralles , Antonio Pich

The scalar singlet model extends the Standard Model with the addition of a new gauge singlet scalar. We re-examine the limits on the new scalar from oblique parameter fits and from a global fit to precision electroweak observables and…

High Energy Physics - Phenomenology · Physics 2021-04-28 Sally Dawson , Pier Paolo Giardino , Samuel Homiller

We perform a state-of-the-art global fit to all Higgs data. We synthesise them into a 'universal' form, which allows to easily test any desired model. We apply the proposed methodology to extract from data the Higgs branching ratios,…

High Energy Physics - Phenomenology · Physics 2015-06-15 Pier Paolo Giardino , Kristjan Kannike , Isabella Masina , Martti Raidal , Alessandro Strumia

We present a new global SMEFT analysis of LHC data in the top sector. After updating our set of measurements, we show how public ATLAS likelihoods can be incorporated into an external global analysis and how our analysis benefits from the…

High Energy Physics - Phenomenology · Physics 2025-03-26 Nina Elmer , Maeve Madigan , Tilman Plehn , Nikita Schmal
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