2nd Black Book - CP3-Origins

Composite Higgs to two Photons and Gluons
We introduced a simple framework to estimate the composite Higgs boson coupling to twophoton
in Technicolor extensions of the standard model. The same framework allows us to predict
the composite Higgs to two-gluon process. We compare the decay rates with the standard
model ones and show that the corrections are typically of order one. We suggest, therefore, that
the two-photon decay process can be efficiently used to disentangle a light composite Higgs
from the standard model one. We also show that the Tevatron results for the gluon-gluon fusion
production of the Higgs either exclude the techniquarks to carry color charges to the 95% confidence
level, if the composite Higgs is light, or that the latter must be heavier than around 200
GeV.
Mass Deformed Exact S-parameter in Conformal Theories.
Francesco Sannino (Southern Denmark U., CP3-Origins). CP3-ORIGINS-2010-21. Jun 2010. 4 pp.
Published in Phys.Rev. D82 (2010) 081701
e-Print: arXiv:1006.0207 [hep-lat]
Exact Flavor Dependence of the S-parameter.
Stefano Di Chiara, Claudio Pica, Francesco Sannino, (Southern Denmark U., CP3-Origins) . CP3-ORIGINS-
2010-32, Aug 2010. 8pp.
e-Print: arXiv:1008.1267 [hep-ph]
Dark Matter and Composite Inflation
Mixed dark matter from technicolor
We studied natural composite cold dark
matter candidates which are pseudo
Nambu-Goldstone bosons (pNGB) in
models of dynamical electroweak symmetry
breaking. Some of these can have
a significant thermal relic abundance,
while others must be mainly asymmetric
dark matter. By considering the thermal
abundance alone we find a lower bound
of MW on the pNGB mass when the
(composite) Higgs is heavier than 115
GeV. Being pNGBs, the dark matter candidates
are in general light enough to be
produced at the LHC.
Mixed dark matter from technicolor.
Alexander Belyaev, (Southampton U. & Rutherford) , Mads T. Frandsen,, Francesco Sannino, (Southern
Denmark U., CP3-Origins), Subir Sarkar, (Oxford U., Theor. Phys.). Jul 2010. (Published Jan 1, 2011). 9pp.
Published in Phys.Rev.D83:015007,2011.
e-Print: arXiv:1007.4839 [hep-ph]
Constraining Asymmetric Dark Matter through observations of compact stars
We put constraints on asymmetric dark matter candidates with spin-dependent interactions
based on the simple existence of white dwarfs and neutron stars in globular clusters. For a wide
range of the parameters (WIMP mass and WIMP-nucleon cross section), WIMPs can be trapped
in progenitors in large numbers and once the original star collapses to a white dwarf or a neu-
20 CP³-Black book