Journal or Book Title

PHYSICS LETTERS B

Publication Date

2001

Abstract

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 loop weak OPE calculations. The effects of dimension eight (and higher dimension) operators are fully accounted for. We perform a numerical determination of the weak matrix elements using our dispersive sum rules fortified by constraints from the classical chiral sum rules. A careful assessment of the attendant uncertainties is given.

Comments

This is a pre-published version which is collected from arXiv. The published version is at http://www.sciencedirect.com/science?_ob=ArticleURL&_udi=B6TVN-44B2G63-3&_user=1516330&_coverDate=12%2F13%2F2001&_alid=1518233528&_rdoc=1&_fmt=high&_orig=search&_origin=search&_zone=rslt_list_item&_cdi=5539&_sort=r&_st=13&_docanchor=&view=c&_ct=1&_acct=C000053443&_version=1&_urlVersion=0&_userid=1516330&md5=585d0115f08b4591a24116ec887704c1&searchtype=a

Volume

522

Pages

245-256

Issue

3-4

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