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SUMMARY:Elementary Higgs\, pseudo-Goldstone or dilaton? - Riccardo Rattazz
 i [EPFL\, Switzerland]
DTSTART:20100428T150000Z
DTEND:20100428T160000Z
UID:TALK22133@talks.cam.ac.uk
CONTACT:Francis Bursa
DESCRIPTION:The absence of a light Higgs boson is often considered the mai
 n feature of dynamical Electroweak Symmetry Breaking (EWSB). However it is
  conceivable\, and perhaps preferable\, to consider the situation where a 
 new strong interaction underlies EWSB and yet there exists a light scalar 
 resonance with  couplings qualitatively similar to those of the Standard M
 odel Higgs. One can\nthink of two such examples\, in one case the light sc
 alar is a pseudo-Goldstone composite Higgs while in the other it is a natu
 rally light dilaton. I will show that\, in both cases\, the deviations fro
 m the Standard Model are tightly constrained by the relevant non-linearly 
 realized approximate symmetries. I will discuss the relevant observables t
 o distinguish them.
LOCATION:MR2\, Centre for Mathematical Sciences
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