Little Higgs models and custodial SU(2) -: art. no. 035002

被引：140

作者：

Chang, S ^{[1
]}

Wacker, JG ^{[1
]}

机构：

[1] Harvard Univ, Jefferson Phys Lab, Cambridge, MA 02138 USA

来源：

PHYSICAL REVIEW D | 2004年 / 69卷 / 03期

关键词：

D O I：

10.1103/PhysRevD.69.035002

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

In this paper we present a little Higgs model that has custodial SU(2) as an approximate symmetry. This theory is a simple modification of the "minimal moose" model with SO(5) global symmetries protecting the Higgs boson mass. This allows for a simple limit where TeV physics makes small contributions to precision electroweak observables. The spectrum of particles and their couplings to standard model fields are studied in detail. At low energies this model has two Higgs doublets and it favors a light Higgs boson from precision electroweak bounds, though for different reasons than in the standard model. The limit on the breaking scale, f, is roughly 700 GeV, with a top partner of 2 TeV, W-' and B-' of 2.5 TeV, and heavy Higgs partners of 2 TeV. These particles are easily accessible at hadron colliders.

引用

页数：13

共 25 条

[1] The minimal moose for a little Higgs [J].

Arkani-Hamed, N ;

Cohen, AG ;

Katz, E ;

Nelson, AE ;

Gregoire, T ;

Wacker, JG .

JOURNAL OF HIGH ENERGY PHYSICS, 2002, (08) :451-466

[2]

Arkani-Hamed N, 2002, J HIGH ENERGY PHYS

[3] The littlest Higgs [J].

Arkani-Hamed, N ;

Cohen, AG ;

Katz, E ;

Nelson, AE .

JOURNAL OF HIGH ENERGY PHYSICS, 2002, (07) :929-944

[4] Electroweak symmetry breaking from dimensional deconstruction [J].

Arkani-Hamed, N ;

Cohen, AG ;

Georgi, H .

PHYSICS LETTERS B, 2001, 513 (1-2) :232-240

[5]

Arkani-Hamed N, private communication

[6]

Barbieri R., hep-ph/0007265

[7] Large Hadron Collider tests of the little Higgs model [J].

Burdman, G ;

Perelstein, M ;

Pierce, A .

PHYSICAL REVIEW LETTERS, 2003, 90 (24) :4

[8] MODEL-INDEPENDENT GLOBAL CONSTRAINTS ON NEW PHYSICS [J].

BURGESS, CP ;

GODFREY, S ;

KONIG, H ;

LONDON, D ;

MAKSYMYK, I .

PHYSICAL REVIEW D, 1994, 49 (11) :6115-6147

[9]

Chang S, 2003, J HIGH ENERGY PHYS

[10] Electroweak data and the Higgs boson mass: A case for new physics [J].

Chanowitz, MS .

PHYSICAL REVIEW D, 2002, 66 (07)

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