CP violation in $$K^0 (\bar K^0 ) \to 2\gamma $$ decay

Quark off-shell effects in B → γγ decays

“…To evaluate the hadronic matrix elements in the bound-state approach, the variant of an effective meson bilocal theory was used. The bound-state calculation in essence confirms the previous chiral-quark results: our off-shell contribution is, within the language of chiral perturbation theory, an entirely new O(p 4 ) direct-decay piece 22 not contained in previous analysis 25 , whereas the reducible pole contributions 26 are numerically uncertain, and the non-diagonal magnetic-moment term belongs to the O(p 6 ) terms.…”

Light-stabilization of polymeric materials by grafted UV-cured coatings

“…This possibility can be ruled out on the basis of the previous result and of the two following experimental observations: (a) when the H-abstraction type photoinitiator (benzophenone) was replaced by a photocleavabletype initiator (Darocur 1173), polymerization of HDDA occurred readily upon UV exposure, but the coating showed a poor adhesion on the PP or PVC substrate, and it was easily washed away by the solvent treatment; (b) the photopolymerization of the acrylate monomer containing benzophenone was found to occur only when the formulation was coated onto a polymer substrate, and not when the same experiment was carried out on a glass plate. 31 This result demonstrates that the organic substrate plays a crucial role in the polymerization by initiating a grafting reaction.…”

Our Current View ofNature’s Building Blocks

“…2) measurable in interference experiments, a would be zero if CP was not violated 161,162,35 . It is useful to separate the amplitude contributions into two classes: the long-and the short-distance ones.…”