Physics – High Energy Physics – High Energy Physics - Phenomenology
Scientific paper
2010-10-07
Physics
High Energy Physics
High Energy Physics - Phenomenology
5 pages, 4 figures
Scientific paper
We explore a scenario in the Standard Model in which dimension four Yukawa couplings are either forbidden by a symmetry, or happen to be very tiny, and the Yukawa interactions are dominated by effective dimension six interactions. In this case, the Higgs interactions to the fermions are enhanced in a large way, whereas its interaction with the gauge bosons remains the same as in the Standard Model. In hadron colliders, Higgs boson production via gluon gluon fusion increases by a factor of nine. Higgs decay widths to fermion anti-fermion pairs also increase by the same factor, whereas the decay widths to photon photon and gamma Z are reduced. Current Tevatron exclusion range for the Higgs mass increases to ~ 142-200 GeV in our scenario, and new physics must appear at a scale below a TeV.
Murdock Zeke
Nandi Satyanarayan
Rai Santosh Kumar
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