Physics – High Energy Physics – High Energy Physics - Phenomenology
Scientific paper
2007-12-27
Nucl.Phys.B802:247-279,2008
Physics
High Energy Physics
High Energy Physics - Phenomenology
35 pages, 14 figures
Scientific paper
10.1016/j.nuclphysb.2008.05.019
In minimal left-right symmetric theories, the requirement of parity invariance allows only one complex phase in the Higgs potential and one in the Yukawa couplings, leading to a two-phase theory with both spontaneous and explicit CP violations. We present a systematic way to solve the right-handed quark mixing matrix analytically in this model and find that the leading order solution has the same hierarchical structure as the left-handed CKM matrix with one more CP-violating phase coming from the complex Higgs vev. Armed with this explicit right-handed mixing matrix, we explore its implications for flavor changing and conserving processes in detail, low-energy CP-violating observables in particular. We report an improved lower bound on the $W_R$ mass of 2.5 TeV from $\Delta M_K$ and $\Delta M_{B}$, and a somewhat higher bound (4 TeV) from kaon decay parameters $\epsilon$, $\epsilon'$, and neutron electric dipole moment. The new bound on the flavor-changing neutral Higgs mass is 25 TeV.
An Haipeng
Ji Xiangdong
Mohapatra Rabindra N.
Zhang Yue
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