Chiral Condensates, Q_7 and Q_8 Matrix Elements and Large-N_c QCD

Details Chiral Condensates, Q_7 and Q_8 Matrix Elements and Large-N_c QCD Chiral Condensates, Q_7 and Q_8 Matrix Elements and Large-N_c QCD

2004-08-25

arxiv.org/abs/hep-ph/0408281v2

JHEP0410:043,2004

Physics

High Energy Physics

High Energy Physics - Phenomenology

Layout modified, size of first figure corrected

Scientific paper

10.1088/1126-6708/2004/10/043

The correlation function of a $V-A$ current with a $V+A$ current is discussed within the framework of QCD in the limit of a large number of colours $N_c$. Applications to the evaluation of chiral condensates of dimension six and higher, as well as to the matrix elements of the $Q_7$ and $Q_8$ electroweak penguin operators are discussed. A critical comparison with previous determinations of the same parameters has also been made.

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