Spectrum and couplings of so 5 x u 1 gauge higgs unification model in warped spacetime
This presentation is the property of its rightful owner.
Sponsored Links
1 / 32

Spectrum and couplings of SO(5) x U(1) gauge-Higgs unification model in warped spacetime PowerPoint PPT Presentation


  • 72 Views
  • Uploaded on
  • Presentation posted in: General

Spectrum and couplings of SO(5) x U(1) gauge-Higgs unification model in warped spacetime. B-L. Yutaka Sakamura (Osaka Univ.) with Yutaka Hosotani (Osaka Univ.) Phys.Lett.B645 (2007) 442 March 2, [email protected] Introduction. Structure of EW : unspecified yet Standard Higgs mechanism

Download Presentation

Spectrum and couplings of SO(5) x U(1) gauge-Higgs unification model in warped spacetime

An Image/Link below is provided (as is) to download presentation

Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author.While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server.


- - - - - - - - - - - - - - - - - - - - - - - - - - E N D - - - - - - - - - - - - - - - - - - - - - - - - - -

Presentation Transcript


Spectrum and couplings of SO(5)xU(1) gauge-Higgs unification model in warped spacetime

B-L

Yutaka Sakamura (Osaka Univ.)

with Yutaka Hosotani (Osaka Univ.)

Phys.Lett.B645 (2007) 442

March 2, [email protected]


Introduction

Structure of EW:unspecified yet

  • Standard Higgs mechanism

  • Little Higgs model (N.Arkani-Hamed, et al., JHEP 0208 (2002) 021 )

  • Higgsless model (C.Csaki, et al., PRD69 (2004) 055006)

  • Gauge-Higgs unification model (GHU)(N.Manton, NPB158 (1979)141, D.B.Fairlie, PLB82(1979)97,…)


Introduction

Structure of EW:unspecified yet

  • Standard Higgs mechanism

  • Little Higgs model (N.Arkani-Hamed, et al., JHEP 0208 (2002) 021 )

  • Higgsless model (C.Csaki, et al., PRD69 (2004) 055006)

  • Gauge-Higgs unification model (GHU)(N.Manton, NPB158 (1979)141, D.B.Fairlie, PLB82(1979)97,…)

In GHU, Higgs mass is protected by

Higher dimensional gauge symmetry


Simplest model (SU(3) model)

  • spacetime: 5D flat ( )

  • gauge symmetry:


2

Z -Orbifold Parity

Orbifold conditions:


Higgs doublet


  • Higgs doublet


  • Higgs doublet

  • (gauge-invariant) Wilson line phase

determined by quantum effect


Relations among mass scales


Warped spacetime

Randall, Sundrum, PRL83 (1999) 3370


Relations among mass scales (warped case)

(Hosotani, Mabe, PLB615 (2005) 257)


Problem of SU(3) model

  • Wrong value of the Weinberg angle

  • Rho parameter deviates from one.


Problem of SU(3) model

  • Wrong value of the Weinberg angle

  • Rho parameter deviates from one.


Problem of SU(3) model

  • Wrong value of the Weinberg angle

  • Rho parameter deviates from one.


SO(5)xU(1) model

B-L

Agashe,Contino,Pomarol, NPB719(2005)165

Gauge fields:


5D action


Symmetry breaking


Symmetry breaking

Higgs doublet


Symmetry breaking


Higgs doublet:

By using residual symemtry,

Wilson line phase:


Mass spectrum

W boson:

Z boson:


Weak gauge boson masses


Gauge couplings

Weinberg angle

Rho parameter


WWZ Coupling

SM value


WWH, ZZH couplings


Summary

B-L

SO(5)xU(1) model in warped spacetime


Future work

  • Specify the fermionic sector.

  • Include the quantum effects.

  • Determine the value of dynamically.


  • Login