NEW 4-QUARK DELTA-S=2 LOCAL OPERATOR
Journal or Book Title
PHYSICAL REVIEW D
We describe a new four-quark ΔS=2 local operator, which we dub the ‘‘dipenguin’’ operator. Its form is derived and its K¯ 0-to-K0 matrix element is estimated. Also, we comment upon bag-model evaluations of K¯ 0-to-K0 matrix elements of (V-A)×(V-A) operators.
Donoghue, JF; Golowich, Eugene; and VALENCIA, G, "NEW 4-QUARK DELTA-S=2 LOCAL OPERATOR" (1986). PHYSICAL REVIEW D. 189.
Retrieved from https://scholarworks.umass.edu/physics_faculty_pubs/189
Published version is located at http://prd.aps.org/abstract/PRD/v33/i5/p1387_1