# Low-energy Restrictions for a Flipped $E(6)$ Model

Authors
Publication Date
Apr 01, 1989
Identifiers
DOI: 10.1007/BF01560268
OAI: oai:inspirehep.net:278056
Source
INSPIRE-HEP
I consider some low energy restrictions for a “flipped” left-right symmetric model containing exotic fermions ofE6 and a right-handedW-boson, all with oddR-parity. The new interactions due toWR-exchange have no significant impact on rare kaon decays, because theWR does not couple tod,s,b quarks. On the other hand,WR exchanges might induce rare processes like$$D - \bar D$$ mixing,$$D^0\to \mu \bar \mu ,D^0\to \mu \bar e,\mu\to e\gamma ,\mu\to 3e$$, and μN→eN. It turns out that the strongest bound is obtained from$$D - \bar D$$ mixing. With reasonable extra assumptions, it is found that the exotic right-handed W-boson is likely to be heavier than 500 to 1500 GeV.