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We study the Higgs self couplings of a supersymmetric $E_6$ model that has two Higgs doublets and two Higgs singlets. The lightest scalar Higgs boson in the model may be heavier than 112 GeV, at the one-loop level, where the negative…

High Energy Physics - Phenomenology · Physics 2009-12-01 S. W. Ham , Kideok Han , Jungil Lee , S. K. Oh

The International Linear Collider (ILC) will allow the precise study of $e^{-}e^{+}\rightarrow q\bar{q}$ interactions at different center-of-mass energies from the $Z$-pole to 1 TeV. In this paper, we discuss the experimental prospects for…

High Energy Physics - Phenomenology · Physics 2024-06-03 A. Irles , J. P. Márquez , R. Pöschl , F. Richard , A. Saibel , H. Yamamoto , N. Yamatsu

Precise measurement of Higgs boson couplings is an important task for International Linear Collider (ILC) experiments and will facilitate the understanding of the particle mass generation mechanism. In this study, the measurement accuracies…

High Energy Physics - Experiment · Physics 2013-03-20 H. Ono , A. Miyamoto

Interpretations of searches for the Higgs boson are governed by model-dependent combinations of Higgs production cross sections and Higgs branching ratios. Mixing of the Higgs doublet with a hidden sector captures modifications from the…

High Energy Physics - Phenomenology · Physics 2012-04-23 Christoph Englert

We discuss complementarity of discovery reaches of heavier neutral Higgs bosons and charged Higgs bosons at the LHC and the International Linear Collider (ILC) in two Higgs doublet models (2HDMs). We perform a comprehensive analysis on…

High Energy Physics - Phenomenology · Physics 2014-07-30 Shinya Kanemura , Hiroshi Yokoya , Ya-Juan Zheng

In many models with extended Higgs sectors, $e.g.$ 2HDM, NMSSM, there exists a light scalar $h$, lighter than the Standard Model (SM) like Higgs, and the coupling of $hZZ$ can be very small, as expected from the likeness of the 125 GeV…

High Energy Physics - Experiment · Physics 2018-01-26 Yan Wang , Jenny List , Mikael Berggren

The Higgs sector of particle physics is still largely uncovered, where establishing the Higgs mechanism is central to advance the field. The Higgs self-coupling is the key ingredient missing and an important puzzle piece for potentially…

High Energy Physics - Phenomenology · Physics 2023-08-01 Julie Munch Torndal , Jenny List

The historic LHC discovery of the 125 GeV particle with properties that closely resemble the Standard Model (SM) Higgs boson verifies our understanding of electroweak symmetry breaking, but solidifies the need for a resolution to the…

High Energy Physics - Phenomenology · Physics 2013-07-23 Vernon Barger , Lisa L. Everett , Heather E. Logan , Gabe Shaughnessy

In the Standard Model (SM) the couplings of the Higgs boson to SM particles and itself (self-couplings) are uniquely specified once the masses of the particles in question as well as the Higgs boson mass are given. Precision measurements of…

High Energy Physics - Phenomenology · Physics 2013-11-27 Junping Tian , Keisuke Fujii

We consider the production of a single Standard Model (SM) Higgs boson ($h^0$) in association with a photon at the future Linear collider (LC) in the context of a type-II seesaw model. The type-II seesaw model extends the SM particle…

High Energy Physics - Phenomenology · Physics 2020-01-08 L. Rahili , A. Arhrib , R. Benbrik

The quest for the Higgs boson of the Standard Model, which was a cornerstone in the physics programme at particle colliders operating at the energy frontier for several decades, is the subject of this review. After reviewing the formulation…

High Energy Physics - Phenomenology · Physics 2015-06-12 S. Dittmaier , M. Schumacher

The precise measurement of the Higgs mass is the most important program at International Linear Collider (ILC). Using e+e- -> ZH process, the mass of Higgs boson can be measured by two lepton tracks from decay of Z boson, even if the Higgs…

High Energy Physics - Phenomenology · Physics 2009-02-19 Kazutoshi Ito

We investigate a possibility of precision measurements for parameters of the Littlest Higgs model with T-parity at the International Linear Collider (ILC). The model predicts new gauge bosons (AH, ZH, and WH), among which the heavy photon…

High Energy Physics - Phenomenology · Physics 2009-11-19 Eri Asakawa , Masaki Asano , Keisuke Fujii , Tomonori Kusano , Shigeki Matsumoto , Rei Sasaki , Yosuke Takubo , Hitoshi Yamamoto

The measurement of the Higgs coupling to W bosons is an important program at the international linear collider (ILC) to search for the anomaly in the coupling to the gauge bosons. We study the sensitivity of ILC to the Higgs anomalous…

High Energy Physics - Phenomenology · Physics 2010-06-18 Yosuke Takubo , Katsumasa Ikematsu , Nobuchika Okada , Robert N. Hodgkinson , Keisuke Fujii

The International Linear Collider (ILC) will advance our understanding of fundamental physics, through a program for precision measurements of the Higgs boson and of the top quark properties. An additional crucial goal of the ILC will be…

High Energy Physics - Phenomenology · Physics 2015-11-03 Stefania Gori

I estimate the accuracies on Higgs boson coupling constants that experiments at the Large Hadron Collider and the International Linear Collider are capable of reaching over the long term.

High Energy Physics - Phenomenology · Physics 2013-04-02 Michael E. Peskin

We report on a study of the physics potential of linear $e^+e^-$ colliders. Although a linear collider (LC) would support a broad physics program, we focus on the contributions that could help elucidate the origin of electroweak symmetry…

The precision measurements of Higgs boson observables will be critical in the interpretation of the dynamics responsible for electroweak symmetry breaking. The capabilities of the ILC and CLIC for precision Higgs studies are well…

High Energy Physics - Phenomenology · Physics 2012-03-14 Howard E. Haber

This document aims to provide an assessment of the potential of future colliding beam facilities to perform Higgs boson studies. The analysis builds on the submissions made by the proponents of future colliders to the European Strategy…

High Energy Physics - Phenomenology · Physics 2025-02-13 J. de Blas , M. Cepeda , J. D'Hondt , R. K. Ellis , C. Grojean , B. Heinemann , F. Maltoni , A. Nisati , E. Petit , R. Rattazzi , W. Verkerke

We consider the capability of the e^+e^- linear collider (which is recently called as the International Linear Collider, or ILC) for studying the properties of the heavy Higgs bosons in the supersymmetric standard model. We pay special…

High Energy Physics - Phenomenology · Physics 2009-11-11 Takeo Moroi , Yasuhiro Shimizu