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Now that the Higgs particle has been observed by the ATLAS and CMS experiments at the LHC, the next endeavour would be to probe its fundamental properties and to measure its couplings to fermions and gauge bosons with the highest possible…

High Energy Physics - Phenomenology · Physics 2013-03-27 Abdelhak Djouadi

We discuss some consistency tests that must be passed for a successful explanation of a diphoton excess at larger mass scales, generated by a scalar or pseudoscalar state, possibly of a composite nature, decaying to two photons. Scalar…

High Energy Physics - Phenomenology · Physics 2016-05-04 Laure Berthier , James M. Cline , William Shepherd , Michael Trott

A fundamental property of the Standard Model is that the Higgs potential becomes unstable at large values of the Higgs field. For the current central values of the Higgs and top masses, the instability scale is about $10^{11}$ GeV and…

High Energy Physics - Phenomenology · Physics 2019-05-24 José Ramón Espinosa , Davide Racco , Antonio Riotto

We show that large n-particle production rates derived in the semiclassical Higgsplosion limit of scalar field theoretical models with spontaneous symmetry breaking, are consistent with general principles of localizable quantum field…

High Energy Physics - Phenomenology · Physics 2018-11-28 Valentin V. Khoze , Michael Spannowsky

A Higgs boson mass $\sim 126$ GeV as determined by the LHC data requires a large loop correction which in turn implies a large sfermion mass. Implication of this result for the stability of the proton in supersymmetric grand unified…

High Energy Physics - Phenomenology · Physics 2015-06-15 Mengxi Liu , Pran Nath

It is of great interest to connect cosmology in the early universe to the Standard Model of particle physics. In this paper, we try to construct a bounce inflation model with the standard model Higgs boson, where the one loop correction is…

General Relativity and Quantum Cosmology · Physics 2015-12-15 Youping Wan , Taotao Qiu , Fa Peng Huang , Yi-Fu Cai , Hong Li , Xinmin Zhang

We discuss novel effects in the phenomenology of a light Higgs boson within the context of composite models. We show that large modifications may arise in the decay of a composite Nambu-Goldstone boson Higgs to a photon and a Z boson, h ->…

High Energy Physics - Phenomenology · Physics 2013-11-13 Aleksandr Azatov , Roberto Contino , Andrea Di Iura , Jamison Galloway

The discovery of a Higgs particle has triggered numerous theoretical and experimental investigations concerning its production and decay rates and has led to interesting results concerning its interaction with fermions and gauge bosons. The…

High Energy Physics - Phenomenology · Physics 2017-07-25 M. F. Zoller

We revisit inflation in induced gravity. Our focus is on models where the low scale Planck mass is completely determined by the breaking of the scaling symmetry in the field theory sector. The Higgs-like field which breaks the symmetry with…

High Energy Physics - Phenomenology · Physics 2008-11-26 Nemanja Kaloper , Lorenzo Sorbo , Jun'ichi Yokoyama

We define a Higgs descendant $\chi$ to be a particle beyond the standard model whose mass arises predominantly from the vacuum expectation value of the Higgs boson. Higgs descendants arise naturally from new physics whose intrinsic mass…

High Energy Physics - Phenomenology · Physics 2013-05-30 Clifford Cheung , Yasunori Nomura

The Standard Model Higgs potential becomes unstable at large Higgs field values where its quartic coupling becomes negative. While the tunneling lifetime of our current electroweak vacuum is comfortably longer than the age of the universe,…

High Energy Physics - Phenomenology · Physics 2022-09-28 Valerio De Luca , Alex Kehagias , Antonio Riotto

The Higgs portal interaction to a singlet sector of the standard model (SM) gauge group is widely-studied. In this Letter, we show that a quantum effect is important if the Higgs field mixes with another singlet scalar field whose decay…

High Energy Physics - Phenomenology · Physics 2023-06-28 Kodai Sakurai , Wen Yin

The discovery of the Higgs boson is both a milestone achievement for the Standard Model and an exciting probe of new physics beyond the SM. One of the most important properties of the Higgs is its mass, a number that has proven to be highly…

High Energy Physics - Phenomenology · Physics 2017-02-23 Patrick Draper , Heidi Rzehak

We investigate basic consequences of the assumption that the mass scale of the perturbative sector responsible for the spontaneous symmetry breaking is generated dynamically in a theory with a large UV scale. It is assumed that in addition…

High Energy Physics - Phenomenology · Physics 2015-06-11 Zygmunt Lalak

Precision electroweak data suggests the existence of a light Standard Model Higgs boson. Its width is very narrow by an accident of the fermion mass hierarchies, and so slight perturbations to the theory induce dramatic changes in the…

High Energy Physics - Phenomenology · Physics 2007-05-23 James D. Wells

Accurately measuring the properties of the Higgs boson is one of the primary physics objectives of the high-energy frontier. By incorporating the inclusive information of all reconstructed particles to identify the signal events, referred…

High Energy Physics - Experiment · Physics 2026-03-10 Jianfeng Jiang , Yongfeng Zhu , Chao Yang , Manqi Ruan

We compute one-loop corrections to the S and T parameters in the Unhiggs scenario. In that scenario, the Standard Model Higgs is replaced by a non-local object, called the Unhiggs, whose spectral function displays a continuum above the mass…

High Energy Physics - Phenomenology · Physics 2010-01-06 Adam Falkowski , Manuel Perez-Victoria

It is remarkable that the measured Higgs boson mass is so close to the value which maximizes the Higgs decay rate to photons as predicted by the Standard Model. In this work we explore the consequences to assume that an $\sim 125$ GeV Higgs…

High Energy Physics - Phenomenology · Physics 2014-08-11 Alexandre Alves , E. Ramirez Barreto , A. G. Dias

Higgs boson production at the LHC within the Standard Model and its minimal supersymmetric extension is reviewed. The predictions for decay rates and production cross sections are updated by choosing the present value of the top quark mass…

High Energy Physics - Phenomenology · Physics 2016-10-26 Michael Spira

In this letter we study the Higgs mass in the NMSSM with supersymmetry breaking at high scales $M_{SS}$. With the Standard Model as the effective low energy theory, the computation of the Higgs mass relies on the matching condition of the…

High Energy Physics - Phenomenology · Physics 2016-08-24 Lucila Zarate
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