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The large hadron collider (LHC) is anticipated to provide signals of new physics at the TeV scale, which are likely to involve production of a WIMP dark matter candidate. The international linear collider (ILC) is to sort out these signals…

We study models in which a light scalar dark energy particle couples to the gauge fields of the electroweak force, the photon, Z and W bosons. Our analysis applies to a large class of interacting dark energy models, including those in which…

High Energy Physics - Phenomenology · Physics 2009-12-08 Philippe Brax , Clare Burrage , Anne-Christine Davis , David Seery , Amanda Weltman

We show that dark matter could be made of massive gauge bosons whose stability doesn't require to impose by hand any discrete or global symmetry. Stability of gauge bosons can be guaranteed by the custodial symmetry associated to the gauge…

High Energy Physics - Phenomenology · Physics 2010-03-26 Thomas Hambye

A search for dark matter produced in association with a dark Higgs boson decaying into a bottom quark-antiquark pair has been performed using proton-proton collision data at a center-of-mass energy of 13 TeV. The search uses data collected…

High Energy Physics - Experiment · Physics 2026-04-24 CMS Collaboration

The Littlest Higgs with T-parity Model (LHT) is one of the attractive candidates of physics beyond the Standard Model. In this study we focus on heavy gauge bosons and heavy leptons that LHT imposes, which are detectable at ILC. The mass…

High Energy Physics - Phenomenology · Physics 2012-03-06 Eriko Kato , Masaki Asano , Keisuke Fujii , Shigeki Matsumoto , Yosuke Takubo , Hitoshi Yamamoto

This paper discusses some aspects of the estimates of Higgs boson coupling sensitivities for LHC and ILC presented at the Snowmass 2013 meeting. I estimate the measurement accuracies underlying the CMS presentation to Snowmass. I present…

High Energy Physics - Phenomenology · Physics 2014-02-04 Michael E. Peskin

Different production processes involving the Higgs boson, such as annihilation and W/Z boson fusion, will be observed in the International Linear Collider (ILC). The ILC operates at a center-of-mass (CM) energy of $\sqrt{s}$ = 200-1000 GeV.…

High Energy Physics - Phenomenology · Physics 2023-09-04 Ijaz Ahmed , Mashal Shakar , M. U. Ashraf , Jamil Muhammad , Taimoor Khurshid

A recently proposed SO(5)xU(1) gauge-Higgs unification model in the Randall-Sundrum warped space contains a very interesting dark matter candidate, the Higgs boson. As a part of the fifth component of a five-dimensional gauge field, the…

High Energy Physics - Phenomenology · Physics 2014-11-20 Kingman Cheung , Jeonghyeon Song

Although the LHC experiments have searched for and excluded many proposed new particles up to masses close to 1 TeV, there are many scenarios that are difficult to address at a hadron collider. This talk will review a number of these…

High Energy Physics - Experiment · Physics 2022-04-29 Mikael Berggren

The Higgs boson will be subject of intense experimental searches in future high-energy experiments. In addition to the effort made at the Large Hadron Collider, where it was discovered, it will be the major subject of study at the…

Popular Physics · Physics 2014-07-09 Francesca Borzumati , Eriko Kato

The Littlest Higgs Model with T-parity is one of the attractive candidates of physics beyond the Standard Model. One of the important predictions of the model is the existence of new heavy gauge bosons, where they acquire mass terms through…

High Energy Physics - Phenomenology · Physics 2010-06-18 Yosuke Takubo , Eri Asakawa , Masaki Asano , Keisuke Fujii , Eriko Kato , Shigeki Matsumoto , Hitoshi Yamamoto

The LHC did not discover new particles beyond the Standard Model Higgs boson at 7 and 8 TeV, or in the first data samples at 13 TeV. However, the complementary nature of physics with $e^+e^-$ collisions still offers many interesting…

High Energy Physics - Phenomenology · Physics 2017-11-09 Jenny List

Phenomenological aspects of simple dark matter models are studied. We discuss ways to discriminate the dark matter models in future experiments. We find that the measurements of the branching fraction of the Higgs boson into two photons and…

High Energy Physics - Phenomenology · Physics 2017-06-23 Tomohiro Abe , Ryuichiro Kitano , Ryosuke Sato

We develop a simple description of models where electroweak symmetry breaking is triggered by a light composite Higgs, which emerges from a strongly-interacting sector as a pseudo-Goldstone boson. Two parameters broadly characterize these…

High Energy Physics - Phenomenology · Physics 2010-10-27 G. F. Giudice , C. Grojean , A. Pomarol , R. Rattazzi

This note summarizes many detailed physics studies done by the ATLAS and CMS Collaborations for the LHC, concentrating on processes involving the production of high mass states. These studies show that the LHC should be able to elucidate…

High Energy Physics - Phenomenology · Physics 2012-08-27 The ATLAS Collaboration , the CMS Collaboration , J. G. Branson , D. Denegri , I. Hinchliffe , F. Gianotti , F. E. Paige , P. Sphicas

We study the prospects of measuring the decay of the Higgs boson into a pair of muons at the International Linear Collider (ILC). The study is performed at center-of-mass energies of 250\,GeV and 500\,GeV, with fully-simulated Monte-Carlo…

High Energy Physics - Experiment · Physics 2019-02-14 Shin-ichi Kawada , Jenny List , Mikael Berggren

Self-interacting dark matter has been suggested in order to overcome the difficulties of the Cold Dark Matter model on galactic scales. We argue that a scalar gauge singlet coupled to the Higgs boson, which could lead to an invisibly…

Astrophysics · Physics 2009-12-30 M. C. Bento , O. Bertolami , R. Rosenfeld , L. Teodoro

The CDMS Collaboration has reported two candidate events for dark matter. If the events are due to the elastic scattering of dark matter, the dark matter would be a WIMP dark matter with its mass of the order of 10-100GeV and its scattering…

High Energy Physics - Phenomenology · Physics 2010-07-29 Masaki Asano , Shigeki Matsumoto , Masato Senami , Hiroaki Sugiyama

We present an overview of the capabilities that the International Linear Collider (ILC) offers for precision measurements that probe the Standard Model. First, we discuss the improvements that the ILC will make in precision electroweak…

A search for dark matter produced in association with a Higgs boson decaying to a pair of bottom quarks is performed in proton-proton collisions at a center-of-mass energy of 13 TeV collected with the CMS detector at the LHC. The analyzed…

High Energy Physics - Experiment · Physics 2019-04-03 CMS Collaboration