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Showing 2002 · hep-phShow all
3 papers · 2 filters
hep-ph2002★ 67 cited
Improved Determination of the Electroweak Penguin Contribution to epsilon'/epsilon in the Chiral Limit
Vincenzo Cirigliano, John F. Donoghue, Eugene Golowich +1
We perform a finite energy sum rule analysis of the flavor ud two-point V-A current correlator, Delta Pi (Q^2). The analysis, which is performed using both the ALEPH and OPAL datab…
hep-ph2002
K -> pi pi Electroweak Penguins in the Chiral Limit
V. Cirigliano, J. F. Donoghue, E. Golowich +1
We report on dispersive and finite energy sum rule analyses of the electroweak penguin matrix elements < (pi pi) | Q_{7,8} | K > in the chiral limit. We accomplish the correct pert…
hep-ph2002★ 18 cited
The Strange Quark Mass, alpha_s and the Chiral Limit Electroweak Penguin Matrix Elements From Hadronic Tau Decay Data
Kim Maltman
Hadronic tau decay data provides access to the light quark vector (V) and axial vector (A) spectral functions. This makes possible investigations of the dynamics of QCD at intermed…