Aug 4 – 8, 2015
America/Detroit timezone

Flavor Violating Heavy Higgs Decays at the LHC

Aug 7, 2015, 2:00 PM
Kalamazoo (Michigan League)


Michigan League

Electroweak and Higgs Theory EWK and Higgs Sector


Baris Altunkaynak (University of Oklahoma)


We investigate the prospects for LHC discovery of a heavy Higgs boson ($H^0$ or $A^0$) decaying into a top quark and a charm quark within the general two Higgs doublet model (2HDM). Discovery of such signal will greatly improve our understanding of electroweak symmetry breaking and possible sources of tree level flavor changing neutral currents. Almost all the coupling measurements of the 125 GeV Higgs boson at the LHC favor the decoupling limit or the alignment limit of a 2HDM, in which the gauge boson and diagonal fermion couplings of the light neutral Higgs scalar ($h^0$) approach the Standard Model values. In this limit, flavor violating couplings of $h^0$ are naturally suppressed by a small mixing parameter $\cos(\beta-\alpha) \sim 0$, while the off-diagonal couplings of heavier neutral Higgs scalars are sustained by $\sin(\beta-\alpha) \sim 1$. Promising results are found for the LHC running at 13 or 14 TeV center of mass energy.
Oral or Poster Presentation Oral

Primary author

Baris Altunkaynak (University of Oklahoma)


Mr Brent McCoy (University of Oklahoma) Chung Kao (University of Oklahoma) George Wei-Shu Hou (National Taiwan University (TW)) Masaya Kohda (National Taiwan University)

Presentation materials