scholarly journals A minimal little Higgs model

2008 ◽  
Vol 78 (9) ◽  
Author(s):  
Roberto Barceló ◽  
Manuel Masip
Keyword(s):  
Higgs Model ◽  
Little Higgs

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.

scholarly journals A Little Higgs model with Exact Dark Matter Parity

2010 ◽  
Author(s):  
Pedro Schwaller ◽  
George Alverson ◽  
Pran Nath ◽  
Brent Nelson
Keyword(s):  
Dark Matter ◽  
Higgs Model ◽  
Little Higgs

scholarly journals Constraining the Little Higgs model of Schmaltz, Stolarski, and Thaler with recent results from the LHC

2015 ◽  
Vol 91 (1) ◽  
Author(s):  
Pat Kalyniak ◽  
Kenneth Moats ◽  
Travis A. W. Martin
Keyword(s):  
Higgs Model ◽  
Little Higgs

scholarly journals Higgs boson pair production in the little Higgs model at hadron colliders

2004 ◽  
Vol 70 (1) ◽  
Author(s):  
Liu Jing-Jing ◽  
Ma Wen-Gan ◽  
Li Gang ◽  
Zhang Ren-You ◽  
Hou Hong-Sheng
Keyword(s):  
Higgs Boson ◽  
Pair Production ◽  
Higgs Model ◽  
Little Higgs ◽  
Hadron Colliders ◽  
Boson Pair ◽  
Boson Pair Production

scholarly journals Constraining parameter space of the little Higgs model using data from tera-Z factory and ILC

2015 ◽  
Vol 39 (2) ◽  
pp. 023103 ◽  
Author(s):  
Xing-Dao Guo ◽  
Tai-Fu Feng ◽  
Shu-Min Zhao ◽  
Hong-Wei Ke ◽  
Xue-Qian Li
Keyword(s):  
Parameter Space ◽  
Higgs Model ◽  
Little Higgs ◽  
Using Data

scholarly journals A little Higgs model with exact dark matter parity

2009 ◽  
Vol 2009 (12) ◽  
pp. 027-027 ◽  
Author(s):  
A Freitas ◽  
P Schwaller ◽  
D Wyler
Keyword(s):  
Dark Matter ◽  
Higgs Model ◽  
Little Higgs

scholarly journals Probing little Higgs model in e+e-→νν̄γ process

2008 ◽  
Vol 54 (1) ◽  
pp. 149-158 ◽  
Author(s):  
T. Aliev ◽  
O. Çakır
Keyword(s):  
Higgs Model ◽  
Little Higgs

scholarly journals RADIATIVE DECAY ZH→γAH IN THE LITTLE HIGGS MODEL WITH T-PARITY

2011 ◽  
Vol 26 (32) ◽  
pp. 5349-5368 ◽  
Author(s):  
I. CORTÉS-MALDONADO ◽  
G. TAVARES-VELASCO
Keyword(s):  
Radiative Decay ◽  
Branching Ratio ◽  
Small Region ◽  
Higgs Model ◽  
Tree Level ◽  
Little Higgs ◽  
Precision Data ◽  
The One ◽  
Three Body ◽  
Electroweak Precision

In the little Higgs model with T-parity (LHTM), the only tree-level kinematically allowed two-body decay of the ZH boson can be the ZH→AHH decay and thus one-loop induced two-body decays may have a significant rate. We study the ZH→γAH decay, which is induced at the one-loop level by a fermion triangle and is interesting as it depends on the mechanism of anomaly cancelation of the model. All the relevant two- and three-body decays of the ZH gauge boson arising at the tree-level are also calculated. We considered a small region of the parameter space where f is still allowed to be as low as 500 GeV by electroweak precision data. We analyzed the scenario of a Higgs with a mass of 120 GeV. We found that the ZH→γAH branching ratio can be of the order of a tree-level three-body decay and may be at the reach of detection at the LHC for f close to 500 GeV, but it may be difficult to detect for f = 1 TeV . There is also an scenario where the Higgs boson has an intermediate mass such that the ZH→AHH decay is closed, the ZH→γAH gets considerably enhanced and the chances of detection get a large boost.

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