BOUND ON RELIABLE ONE-INSTANTON CROSS-SECTIONS

MODERN PHYSICS LETTERS A（2011）

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摘要

Unitarity considerations imply an upper bound on the value of the one-instanton-induced B and L violating cross-section at which multi-instanton contributions become of comparable order. The bound is inversely proportional to a sum Of Positive-definite terms and, most likely, keeps any reliable one-instanton cross-section exponentially suppressed.

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关键词

cross section,positive definite,particle physics,upper bound

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