Hans Rott, 1858 - 1884

Banks, Paul

doi:10.2307/962808

Cited by 23 publications

(36 citation statements)

References 0 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…We would like to thank also D. Suematsu for letting me know some papers [11,12]. This work is supported in part by the Japan Society for the Promotion of Science.…”

Section: Then the S And T Parameters Can Be Expanded Bymentioning

confidence: 98%

“…Therefore even if one introduces new particles which have the SU(2) L × U(1) Y breaking masses m, S, T and U parameters can be reduced if they have also SU(2) L × U(1) Y invariant masses M >> m. By these facts, we can expect that if the condensation of massive vector-like fields ( i.e. they have SU(2) L ×U(1) Y invariant masses M ) [9,10,11,12] can break the standard gauge symmetry, S, T and U parameters can become small at least in the limit M >> m. In this paper, we would like to discuss dynamical electroweak symmetry breaking by vector-like fields' condensation which is induced mainly by 4-fermi interactions.…”

mentioning

confidence: 99%

See 1 more Smart Citation

Vector-Like Strong Coupling Theory with Small S and T Parameters

Maekawa

1995

Progress of Theoretical Physics

View full text Add to dashboard Cite

We propose a mechanism which can reduce the Peskin and Takeuchi's S, T and U parameters in dynamical electroweak symmetry breaking models. It is interesting that not only S but also T parameter can become small even if there exists large isospin violation in fermion condensation. For example, when we take the SU (2) L × U (1) Y breaking mass of up-type fermion m U = 1 TeV and that of down-type m D = 0, we get S∼ 0.001N and T∼ 0.05N for the SU (2) L × U (1) Y invariant masses M = 10 TeV. The point is that these parameters are suppressed by SU (2) L × U (1) Y invariant masses which the vector-like fermions can have. † Fellow of the Japan Society for the Promotion of Science. ‡ N. Maekawa will be in SLAC in this summer.

show abstract

“…We would like to thank also D. Suematsu for letting me know some papers [11,12]. This work is supported in part by the Japan Society for the Promotion of Science.…”

Section: Then the S And T Parameters Can Be Expanded Bymentioning

confidence: 98%

mentioning

confidence: 99%

Vector-Like Strong Coupling Theory with Small S and T Parameters

Maekawa

1995

Progress of Theoretical Physics

View full text Add to dashboard Cite

show abstract

“…The mass gap between the M W , M Z and M h masses, all of O(100 GeV), and the new physics scale (if there is one within reach), suggests that the Higgs boson and the would-be Goldstone bosons ω ± and z could be (pseudo) Goldstone Boson [111][112][113][114][115][116][117][118], related with a global spontaneous symmetry breaking extending the SU (2) L × SU (2) R → SU (2) L+R global symmetry breaking of the SM. There are several models with specific implementations for the relevant global symmetry breaking pattern: the (Minimal) Composite Higgs Model based on the coset SO(5)/SO(4) [78][79][80][81], dilaton models [82,83] and others [119].…”

Section: Chapter 2 Chiral Ew Lagrangianmentioning

confidence: 99%

Study of the Electroweak Symmetry Breaking Sector for the LHC

López¹

2017

Springer Theses

View full text Add to dashboard Cite

“…"Composite Higgs Models" [50,51,52,53,54] also provide examples of theories with a potentially heavy composite Higgs boson. In the simplest of these models, one introduces three new fermions which couple to a vectorial "ultracolor" SU (N ) gauge interaction.…”

mentioning

confidence: 99%

“…The octet of pions which result from ultracolor chiral symmetry breaking include a set, the analogs of the kaons, which form a composite Higgs boson [52,51]. Models can be constructed [55,56] in which the Higgs boson can formally be as heavy as a TeV (i.e.…”

mentioning

confidence: 99%

Limits on a Composite Higgs Boson

2000

View full text Add to dashboard Cite

Precision electroweak data are generally believed to constrain the Higgs boson mass to lie below approximately 190 GeV at 95% confidence level. The standard Higgs model is, however, trivial and can only be an effective field theory valid below some high energy scale characteristic of the underlying non-trivial physics. Corrections to the custodial isospin violating parameter T arising from interactions at this higher energy scale dramatically enlarge the allowed range of Higgs mass. We perform a fit to precision electroweak data and determine the region in the (m H , ∆T ) plane that is consistent with experimental results. Overlaying the estimated size of corrections to T arising from the underlying dynamics, we find that a Higgs mass up to 500 GeV is allowed. We review two composite Higgs models which can realize the possibility of a phenomenologically acceptable heavy Higgs boson. We comment on the potential of improvements in the measurements of m t and M W to improve constraints on composite Higgs models.

show abstract

Hans Rott, 1858 - 1884

Cited by 23 publications

References 0 publications

Vector-Like Strong Coupling Theory with Small S and T Parameters

Vector-Like Strong Coupling Theory with Small S and T Parameters

Study of the Electroweak Symmetry Breaking Sector for the LHC

Limits on a Composite Higgs Boson

Contact Info

Product

Resources

About