Calculation of a weak nonleptonic matrix element using ``Weinberg'' sum rules

John F. Donoghue

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arXiv · hep-ph/9409398

Calculation of a weak nonleptonic matrix element using ``Weinberg'' sum rules

John F. Donoghue

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Abstract

There is a ``toy'' weak matrix element which can be expressed as an integral over the vector and axial vector spectral functions, $ρ_V (s) - ρ_A (s)$. I review our recent evaluation of these spectral functions, the study of four ``Weinberg'' sum rules and the calculation of this matrix element.

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John F. Donoghue. 1994-09-23. Calculation of a weak nonleptonic matrix element using ``Weinberg'' sum rules. https://arxiv.org/abs/hep-ph/9409398

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