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The Influence of Dimension Eight Operators on Weak Matrix Elements
John F. Donoghue
I describe recent work with V. Cirigliano and E. Golowich on the effect of dimension eight operators on weak nonleptonic amplitudes. The basic message is that there is an inconsist…
K -> pi pi Phenomenology in the Presence of Electromagnetism
Vincenzo Cirigliano, John F. Donoghue, Eugene Golowich
We describe the influence of electromagnetism on the phenomenology of K -> pi pi decays. This is required because the present data were analyzed without inclusion of electromagneti…
Dimension-eight Operators in the Weak OPE
Vincenzo Cirigliano, John F. Donoghue, Eugene Golowich
We expose a potential flaw in standard treatments of weak decay amplitudes, including that of epsilon'/epsilon. We show that (contrary to conventional wisdom) dimension-eight opera…
Random values of the cosmological constant
John F. Donoghue
One way that an anthropic selection mechanism may be manifest in a physical theory involves multiple domains in the universe with different values of the physical parameters. If th…