Realistic composite Higgs models

被引：123

作者：

Anastasiou, Charalampos ^{[1
]}

Furlan, Elisabetta ^{[1
]}

Santiago, Jose ^{[1
]}

机构：

[1] ETH, Inst Theoret Phys, CH-8093 Zurich, Switzerland

来源：

PHYSICAL REVIEW D | 2009年 / 79卷 / 07期

基金：

瑞士国家科学基金会;

关键词：

SYMMETRY-BREAKING; ELECTROWEAK; PHYSICS; SCALAR;

D O I：

10.1103/PhysRevD.79.075003

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

We study the role of fermionic resonances in realistic composite Higgs models. We consider the low energy effective description of a model in which the Higgs arises as the pseudo-Goldstone boson of an SO(5)/SO(4) global symmetry breaking pattern. Assuming that only fermionic resonances are present below the cutoff of our effective theory, we perform a detailed analysis of the electroweak constraints on such a model. This includes the exact one-loop calculation of the T parameter and the anomalous Zb(L)(b)over bar(L) coupling for arbitrary new fermions and couplings. Other relevant observables like b -> s gamma and Delta B=2 processes have also been examined. We find that, while minimal models are difficult to make compatible with electroweak precision tests, models with several fermionic resonances, such as the ones that appear in the spectrum of viable composite Higgs models from warped extra dimensions, are fully realistic in a large region of parameter space. These fermionic resonances could be the first observable signature of the model at the CERN LHC.

引用

页数：16

共 57 条

[1] Measurement of the Single-Top-Quark Production Cross Section at CDF [J].

Aaltonen, T. ;

Adelman, J. ;

Akimoto, T. ;

Albrow, M. G. ;

Alvarez Gonzalez, B. ;

Amerio, S. ;

Amidei, D. ;

Anastassov, A. ;

Annovi, A. ;

Antos, J. ;

Apollinari, G. ;

Apresyan, A. ;

Arisawa, T. ;

Artikov, A. ;

Ashmanskas, W. ;

Attal, A. ;

Aurisano, A. ;

Azfar, F. ;

Azzurri, P. ;

Badgett, W. ;

Barbaro-Galtieri, A. ;

Barnes, V. E. ;

Barnett, B. A. ;

Bartsch, V. ;

Bauer, G. ;

Beauchemin, P. -H. ;

Bedeschi, F. ;

Bednar, P. ;

Beecher, D. ;

Behari, S. ;

Bellettini, G. ;

Bellinger, J. ;

Benjamin, D. ;

Beretvas, A. ;

Beringer, J. ;

Bhatti, A. ;

Binkley, M. ;

Bisello, D. ;

Bizjak, I. ;

Blair, R. E. ;

Blocker, C. ;

Blumenfeld, B. ;

Bocci, A. ;

Bodek, A. ;

Boisvert, V. ;

Bolla, G. ;

Bortoletto, D. ;

Boudreau, J. ;

Boveia, A. ;

Brau, B. .

PHYSICAL REVIEW LETTERS, 2008, 101 (25)

[2] Search for Anomalous Wtb Couplings in Single Top Quark Production [J].

Abazov, V. M. ;

Abbott, B. ;

Abolins, M. ;

Acharya, B. S. ;

Adams, M. ;

Adams, T. ;

Aguilo, E. ;

Ahsan, M. ;

Alexeev, G. D. ;

Alkhazov, G. ;

Alton, A. ;

Alverson, G. ;

Alves, G. A. ;

Anastasoaie, M. ;

Ancu, L. S. ;

Andeen, T. ;

Andrieu, B. ;

Anzelc, M. S. ;

Aoki, M. ;

Arnoud, Y. ;

Arov, M. ;

Arthaud, M. ;

Askew, A. ;

Asman, B. ;

Jesus, A. C. S. Assis ;

Atramentov, O. ;

Avila, C. ;

Badaud, F. ;

Bagby, L. ;

Baldin, B. ;

Bandurin, D. V. ;

Banerjee, P. ;

Banerjee, S. ;

Barberis, E. ;

Barfuss, A. -F. ;

Bargassa, P. ;

Baringer, P. ;

Barreto, J. ;

Bartlett, J. F. ;

Bassler, U. ;

Bauer, D. ;

Beale, S. ;

Bean, A. ;

Begalli, M. ;

Begel, M. ;

Belanger-Champagne, C. ;

Bellantoni, L. ;

Bellavance, A. ;

Benitez, J. A. ;

Beri, S. B. .

PHYSICAL REVIEW LETTERS, 2008, 101 (22)

[3] RS1, custodial isospin and precision tests [J].

Agashe, K ;

Delgado, A ;

May, MJ ;

Sundrum, R .

JOURNAL OF HIGH ENERGY PHYSICS, 2003, (08) :1167-1197

[4] The minimal composite Higgs model and electroweak precision tests [J].

Agashe, K ;

Contino, R .

NUCLEAR PHYSICS B, 2006, 742 :59-85

[5] The minimal composite Higgs model [J].

Agashe, K ;

Contino, R ;

Pomarol, A .

NUCLEAR PHYSICS B, 2005, 719 (1-2) :165-187

[6]

AGASHE K, ARXIV08101497

[7] CERN LHC signals from warped extra dimensions [J].

Agashe, Kaustubh ;

Belyaev, Alexander ;

Krupovnickas, Tadas ;

Perez, Gilad ;

Virzi, Joseph .

PHYSICAL REVIEW D, 2008, 77 (01)

[8] CERN LHC signals for warped electroweak neutral gauge bosons [J].

Agashe, Kaustubh ;

Davoudiasl, Hooman ;

Gopalakrishna, Shrihari ;

Han, Tao ;

Huang, Gui-Yu ;

Perez, Gilad ;

Si, Zong-Guo ;

Soni, Amarjit .

PHYSICAL REVIEW D, 2007, 76 (11)

[9] A custodial symmetry for Zb(b)over-bar [J].

Agashe, Kaustubh ;

Contino, Roberto ;

Da Rold, Leandro ;

Pomarol, Alex .

PHYSICS LETTERS B, 2006, 641 (01) :62-66

[10] Single top quark production at LHC with anomalous Wtb couplings [J].

Aguilar-Saavedra, J. A. .

NUCLEAR PHYSICS B, 2008, 804 (1-2) :160-192

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