scholarly journals Little Higgs Models and Precision Electroweak Data

2004 ◽  
Vol 2004 (02) ◽  
pp. 032-032 ◽  
Author(s):  
Roberto Casalbuoni ◽  
Aldo Deandrea ◽  
Micaela Oertel
Keyword(s):  
Little Higgs ◽  
Precision Electroweak Data

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 Radiative decaysZH→ViZ(Vi= γ,Z) in little Higgs models

2011 ◽  
Vol 39 (1) ◽  
pp. 015003 ◽  
Author(s):  
I Cortés-Maldonado ◽  
A Fernández-Tellez ◽  
G Tavares-Velasco
Keyword(s):  
Little Higgs

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 Little Higgs models and custodialSU(2)

2004 ◽  
Vol 69 (3) ◽  
Author(s):  
Spencer Chang ◽  
Jay G. Wacker
Keyword(s):  
Little Higgs

scholarly journals A CRITICAL LOOK AT PRECISION ELECTROWEAK DATA AT HIGH ENERGY—A HINT FOR PHYSICS BEYOND THE STANDARD MODEL?

1994 ◽  
Vol 09 (35) ◽  
pp. 3301-3312
Author(s):  
A. GURTU
Keyword(s):  
Standard Model ◽  
Pair Production ◽  
High Energy ◽  
Recent Measurement ◽  
Beyond The Standard Model ◽  
Full Data ◽  
Text Production ◽  
Basic Framework ◽  
The Standard Model ◽  
Precision Electroweak Data

High energy electroweak data, including the recent measurement of M top is analyzed within the basic framework of the standard model. While the experimentally measured value of [Formula: see text] implies a low value of M top , the rest of the data demands a much higher value. Estimates of M Higgs within the SM framework including and excluding this Rb measurement are given. Next this discrepancy is expressed in terms of a new parameter, [Formula: see text], the excess[Formula: see text] production compared to that expected from a SM fit. This parameter is determined to be (9.4 to 12.8) ± 5.0 MeV, implying an excess of over 10 000 [Formula: see text] events in each LEP experiment after the 1993 data is fully analyzed. The origin of these events could be non-minimal Higgs pair production which should be thoroughly searched for in the full data sample of ~2×106 events per LEP experiment. Unless this discrepancy eventually turns out to be a fluctuation one may be witnessing at LEP the advent of physics beyond the standard model.

scholarly journals Erratum to: “Loop induced decays of the little Higgs: H→gg, γγ” [Phys. Lett. B 563 (2003) 191]

2004 ◽  
Vol 603 (3-4) ◽  
pp. 257-259 ◽  
Author(s):  
Tao Han ◽  
Heather E. Logan ◽  
Bob McElrath ◽  
Lian-Tao Wang
Keyword(s):  
Little Higgs

scholarly journals New vector boson near theZ-pole and the puzzle in precision electroweak data

2011 ◽  
Vol 84 (3) ◽  
Author(s):  
Radovan Dermíšek ◽  
Sung-Gi Kim ◽  
Aditi Raval
Keyword(s):  
Vector Boson ◽  
Precision Electroweak Data

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

LITTLE HIGGS MODELS FOR NON-UNIVERSALITY FERMION

2005 ◽  
Vol 20 (21) ◽  
pp. 1589-1603
Author(s):  
YAN CHAI ◽  
FURONG YIN
Keyword(s):  
Higgs Mass ◽  
Little Higgs ◽  
Gauge Bosons ◽  
New Models ◽  
The One

We introduce the fermion non-universality into the little Higgs models SU (5)/ SO (5), SU (6)/ Sp (6) and study the phenomenology of the new models. We find that if we change the transform property of the observed fermions under the extended [ SU (2)× U (1)]2, the cancellation of the one-loop quadratically divergent correction to the Higgs mass arising from gauge bosons will not be changed, whereas the phenomenology at W-pole, Z-pole and low q2 will be changed.

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