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Dispersive calculation of B-7((3/2)) and B-8((3/2)) in the chiral limit
Isospin vector the current spectrum function the dispersion analysis vacuum polarization spectral function
2014/12/22
We show how the isospin vector and axialvector current spectral functions V,3 and A,3 can be used to determine in leading chiral order the low energy constants B(3/2) 7 and B(3/2) 8 . This is accomp...
Determination of <(pi pi)I=2/ohm 7,8/K0 > in the chiral limit
Weak matrix elements no cover dispersion
2014/12/22
We reconsider the dispersive evaluation of the weak matrix elements h()I=2|Q7,8|K0i in the chiral limit. The perturbative matching is accomplished fully within the scheme dependence used in the two ...
K ->pi pi electroweak penguins in the chiral limit
Dispersion electroweak penguin matrix element chiral limit
2014/12/20
We report on dispersive and finite energy sum rule analyses of the electroweak penguin matrix elements left angle bracket(ππ)2|Q7,8|K0right-pointing angle bracket in the chiral limit. We accomplish th...
Improved determination of the electroweak penguin contribution to epsilon '/epsilon in the chiral limit
Energy opal spectral function and matrix element electroweak penguin operators
2014/12/20
We perform a finite energy sum rule analysis of the flavor ud two-point VA current correlator, (Q2). The analysis, which is performed using both the ALEPH and OPAL databases for the V-A spectral fun...
Nuclear central force in the chiral limit
Chiral perturbation theory function quality component physical spectrum energy function
2014/12/20
Chiral perturbation theory supplemented by the Omnes function is employed to study the strength of the isoscalar central nuclear interaction, GS, in the chiral limit vs the physical case. A very large...