scholarly journals Pseudoscalar pair production via off-shell Higgs in composite Higgs models

2020 ◽  
Vol 9 (5) ◽  
Author(s):  
Diogo Buarque Franzosi ◽  
Gabriele Ferretti ◽  
Li Huang ◽  
Jing Shu
Keyword(s):  
Pair Production ◽  
Mass Range ◽  
Higgs Model ◽  
The Novel ◽  
Composite Higgs ◽  
Pseudoscalar Particle ◽  
Analysis Strategy ◽  
New Type ◽  
Compositeness Scale

We propose a new type of search for a pseudoscalar particle \etaη pair produced via an off-shell Higgs, pp\to h^*\to \eta\etapp→h*→ηη. The search is motivated by a composite Higgs model in which the \etaη is extremely narrow and decays almost exclusively into Z\gammaZγ in the mass range 65{\mathrm{GeV}}\lesssim m_\eta \lesssim 160{\mathrm{GeV}}65GeV≲mη≲160GeV. We devise an analysis strategy to observe the novel Z\gamma Z\gammaZγZγ channel and estimate potential bounds on the Higgs-\etaη coupling. The experimental sensitivity to the signatures depends on the power to identify fake photons and on the ability to predict large photon multiplicities. This search allows us to exclude large values of the compositeness scale ff, being thus complementary to other typical processes.

scholarly journals Higgs pair production in the composite Higgs model

2012 ◽  
Author(s):  
Ramona Groeber ◽  
Margarete Muehlleitner
Keyword(s):  
Pair Production ◽  
Higgs Model ◽  
Composite Higgs

scholarly journals Fused Graphical Lasso Recovers Flowering Time Mutation Genes in Arabidopsis Thaliana

Inventions ◽  
2021 ◽  
Vol 6 (3) ◽  
pp. 52
Author(s):  
Rajan Kapoor ◽  
Aniruddha Datta ◽  
Michael Thomson
Keyword(s):  
Arabidopsis Thaliana ◽  
Crop Improvement ◽  
Phenotypic Traits ◽  
The Novel ◽  
Model Plant ◽  
Graphical Lasso ◽  
Analysis Strategy ◽  
Model Plant Arabidopsis Thaliana ◽  
Beneficial Traits ◽  
Delayed Flowering

Conventional breeding approaches that focus on yield under highly favorable nutrient conditions have resulted in reduced genetic and trait diversity in crops. Under the growing threat from climate change, the mining of novel genes in more resilient varieties can help dramatically improve trait improvement efforts. In this work, we propose the use of the joint graphical lasso for discovering genes responsible for desired phenotypic traits. We prove its efficiency by using gene expression data for wild type and delayed flowering mutants for the model plant. Arabidopsis thaliana shows that it recovers the mutation causing genes LNK1 and LNK2. Some novel interactions of these genes were also predicted. Observing the network level changes between two phenotypes can also help develop meaningful biological hypotheses regarding the novel functions of these genes. Now that this data analysis strategy has been validated in a model plant, it can be extended to crop plants to help identify the key genes for beneficial traits for crop improvement.

scholarly journals Electroweak baryogenesis and gravitational waves in a composite Higgs model with high dimensional fermion representations

2020 ◽  
Vol 2020 (12) ◽  
Author(s):  
Ke-Pan Xie ◽  
Ligong Bian ◽  
Yongcheng Wu
Keyword(s):  
Form Factors ◽  
Higgs Doublet ◽  
Higgs Model ◽  
High Dimensional ◽  
Electroweak Phase Transition ◽  
First Order ◽  
Composite Higgs ◽  
Future Space ◽  
The Universe ◽  
Scalar Sector

Abstract We study electroweak baryogenesis in the SO(6)/SO(5) composite Higgs model with the third generation quarks being embedded in the 20′ representation of SO(6). The scalar sector contains one Higgs doublet and one real singlet, and their potential is given by the Coleman-Weinberg potential evaluated from the form factors of the lightest vector and fermion resonances. We show that the resonance masses at $$ \mathcal{O}\left(1\sim 10\kern0.5em \mathrm{TeV}\right) $$ O 1 ∼ 10 TeV can generate a potential that triggers the strong first-order electroweak phase transition (SFOEWPT). The CP violating phase arising from the dimension-6 operator in the top sector is sufficient to yield the observed baryon asymmetry of the universe. The SFOEWPT parameter space is detectable at the future space-based detectors.

scholarly journals A composite Higgs with a heavy composite axion

2020 ◽  
Vol 2020 (12) ◽  
Author(s):  
Tony Gherghetta ◽  
Minh D. Nguyen
Keyword(s):  
Cp Violation ◽  
Gauge Group ◽  
Scalar Fields ◽  
Higgs Model ◽  
Global Symmetry ◽  
Color Group ◽  
High Scale ◽  
Axion Mass ◽  
Composite Higgs ◽  
The Standard Model

Abstract We consider the strong dynamics associated with a composite Higgs model that simultaneously produces dynamical axions and solves the strong CP problem. The strong dynamics arises from a new Sp or SU(4) hypercolor gauge group containing QCD colored hyperfermions that confines at a high scale. The hypercolor global symmetry is weakly gauged by the Standard Model electroweak gauge group and an enlarged color group, SU(N + 3) × SU(N)′. When hyperfermion condensates form, they not only lead to an SU(5)/SO(5) composite Higgs model but also spontaneously break the enlarged color group to SU(3)c× SU(N)D. At lower energies, the SU(N)D group confines, producing two dynamical axions that eliminates all CP violation. Furthermore, small instantons from the SU(N)′ group can enhance the axion mass, giving rise to TeV scale axion masses that can be detected at collider experiments. Our model provides a way to unify the composite Higgs with dynamical axions, without introducing new elementary scalar fields, while also extending the range of axion masses that addresses the strong CP problem.

scholarly journals A more natural composite Higgs model

2020 ◽  
Vol 2020 (10) ◽  
Author(s):  
Hsin-Chia Cheng ◽  
Yi Chung
Keyword(s):  
Standard Model ◽  
Higgs Model ◽  
Quadratic Term ◽  
Beyond The Standard Model ◽  
Higgs Potential ◽  
Little Higgs ◽  
Composite Higgs ◽  
Partial Compositeness ◽  
Quartic Term ◽  
Natural Composite

Abstract Composite Higgs models provide an attractive solution to the hierarchy problem. However, many realistic models suffer from tuning problems in the Higgs potential. There are often large contributions from the UV dynamics of the composite resonances to the Higgs potential, and tuning between the quadratic term and the quartic term is required to separate the electroweak breaking scale and the compositeness scale. We consider a composite Higgs model based on the SU(6)/Sp(6) coset, where an enhanced symmetry on the fermion resonances can minimize the Higgs quadratic term. Moreover, a Higgs quartic term from the collective symmetry breaking of the little Higgs mechanism can be realized by the partial compositeness couplings between elementary Standard Model fermions and the composite operators, without introducing new elementary fields beyond the Standard Model and the composite sector. The model contains two Higgs doublets, as well as several additional pseudo-Nambu-Goldstone bosons. To avoid tuning, the extra Higgs bosons are expected to be relatively light and may be probed in the future LHC runs. The deviations of the Higgs couplings and the weak gauge boson couplings also provide important tests as they are expected to be close to the current limits in this model.

CAD AND CAE TECHNOLOGIES OF A NOVEL PLANE SIX-BAR SWAYING MACHINE

2008 ◽  
Vol 07 (01) ◽  
pp. 65-67
Author(s):  
CHANGPING ZOU ◽  
LI DU ◽  
XIANDE HUANG
Keyword(s):  
High Pressure ◽  
Kinetic Analysis ◽  
Rotational Speed ◽  
Preliminary Analysis ◽  
Unit Weight ◽  
The Novel ◽  
Parameterized Modeling ◽  
New Type ◽  
Working Principle ◽  
Key Dimensions

A new type of six-bar swaying machine was put forward, which is an ingenious combination of plane multi-bar mechanism and high pressure oil cylinder. Preliminary analysis shows that this machine has many advantages, such as the torque produced by its unit weight, its small size, its light deadweight, etc. Thus it can be applied to situations that need swaying mechanism with low rotational speed and great torque. Firstly, the mechanism composition and working principle of the swaying machine were introduced. Secondly, parameterized modeling of the mechanism was carried out by utilizing software ADAMS. Then kinematic analysis and kinetic analysis were completed by using ADAMS. Finally, key dimensions were adjusted according to kinetic analysis. These tasks are believed to be beneficial to the development of the novel transmission.

The Application of Mechanism Theory to a Textile Machinery Innovation

1976 ◽  
Vol 190 (1) ◽  
pp. 367-378 ◽  
Author(s):  
G. R. Wray
Keyword(s):  
High Speed ◽  
Practical Experience ◽  
Mechanism Analysis ◽  
The Novel ◽  
Traditional Practice ◽  
Textile Technology ◽  
Theoretical Investigations ◽  
Analysis And Synthesis ◽  
New Type ◽  
Machinery Manufacturing

The design of mechanisms for use in practical machinery applications is often of a trial-and-error nature based on traditional practice. Much emphasis has been given to the theory of mechanisms in recent years but this has yet to find wide practical application. This paper is a case study of how a basic idea, conceived by University-based inventors and intended to improve a slow method of making a textile pile fabric, became a reality in the form of a completely new type of high-speed textile machine for making an improved textile product, all within a time scale of four years. It also shows how recent University researches are further advancing its potential from both the machinery manufacturing and textile technology aspects. Step-by-step from the early experimental stages, it illustrates how the challenges of developing the novel mechanisms required for this unconventional machine and process were met by combining practical experience of traditional machinery design with theoretical investigations based on the new techniques of mechanism analysis and synthesis.

The Diaspora of the Novel

1992 ◽  
Vol 2 (1) ◽  
pp. 131-146
Author(s):  
Artemis Leontis
Keyword(s):  
Uneven Development ◽  
Literary Genre ◽  
The Novel ◽  
History Of The Novel ◽  
The West ◽  
The Past ◽  
The Social ◽  
Economic Transformations ◽  
History Of ◽  
New Type

Reflection on the history of the novel usually begins with consideration of the social, political, and economic transformations within society that favored the “rise” of a new type of narrative. This remains true even with the numerous and important studies appearing during the past ten years, which relate the novel to an everbroadening spectrum of ideological issues—gender, class, race, and, most recently, nationalism. Yet a history of the genre might reflect not just on the novel’s national, but also its transnational, trajectory, its spread across the globe, away from its original points of emergence. Such a history would take into account the expansion of western markets—the growing exportation of goods and ideas, as well as of social, political, and cultural forms from the West—that promoted the novel’s importation by nonwestern societies. Furthermore, it could lead one to examine the very interesting inverse relationship between two kinds of migration, both of which are tied to the First World’s uneven “development” of the Third. In a world system that draws out natural resources in exchange for technologically mediated goods, the emigration of laborers and intellectuals from peripheral societies to the centers of power of the West and the immigration of a western literary genre into these same societies must be viewed as related phenomena.

NEW INSPIRATION FROM CHINA'S PHILOSOPHY OF "UNITY OF MAN AND HEAVEN": CONTEMPORARY INTERNATIONAL RELATIONS UNDER THE COVID-19 PANDEMIC

2021 ◽  
pp. 21-34
Author(s):  
PU JINGXIN
Keyword(s):  
International Relations ◽  
Human Society ◽  
The Novel ◽  
The World ◽  
The Face ◽  
New Type ◽  
Novel Coronavirus ◽  
The Ancient Chinese ◽  
Self Protection ◽  
Harmonious Community

Abstract: The danger of the novel coronavirus has not yet come to an end, and new variants have begun to attack the world. What philosophy should humankind’s strategy be based on when human society as a group is fighting against Covid-19, as the pandemic ravages the world? Unfortunately, political leaders of various countries have failed to achieve the overall awareness of attacking the pandemic for a shared future for mankind so far. In the face of the pandemic, mankind as a whole urgently needs to break through the narrow nation-oriented ideology of seeking only self-protection. The International Community should establish a new type of international cooperation featuring the concept of harmony of "all things under heaven as a unity". The international relations system dominated by the power ofwestern discourse is now in a bottleneck. The main aim of this article is to study the ancient Chinese wisdom of "the Unity of Man and Heaven" philosophy and build a global harmonious community. The author argues that the “export” of the aforementioned wisdom must be a priority for Chinese scholars. Keywords: Tao; Unity of Man and Heaven; Novel Coronavirus; Anthropocentrism; Harmony.

Sign in / Sign up

Export Citation Format

Share Document