TeV scale left–right symmetry and flavor changing neutral Higgs effects

• DOI: 10.1016/j.physletb.2010.10.027
• Publication Date: 2010-10-21T09:40:09Z
• Authors: Diego Guadagnoli; Rabindra N. Mohap...
• Keywords: Low Mass

In minimal left-right symmetric models, the mass of the neutral Higgs field mediating tree-level flavor changing effects (FCNH) is directly related to the parity breaking scale. Specifically, the lower bound on the Higgs mass coming from Higgs-induced tree-level effects, and exceeding about 15 TeV, would tend to imply a W_R mass bound much higher than that required by gauge exchange loop effects -- the latter allowing W_R masses as low as 2.5 TeV. Since a W_R mass below 4 TeV is accessible at the LHC, it is important to investigate ways to decouple the FCNH effects from the W_R mass. In this paper, we present a model where this happens, providing new motivation for LHC searches for W_R in the 1 - 4 TeV mass range.<br/>10 pages, 1 figure. v3: a typo and a bug in the constraint from D0-D0bar mixing fixed. Plots slightly changed, results and conclusions untouched. Matches journal version<br/>