The Second Moment of the Structure Function for Pseudoscalar Mesons in QCD Sum Rules

Details The Second Moment of the Structure Function for Pseudoscalar Mesons in QCD Sum Rules The Second Moment of the Structure Function for Pseudoscalar Mesons in QCD Sum Rules

1994-03-12

arxiv.org/abs/hep-ph/9403279v1

Int.J.Mod.Phys. E5 (1996) 121-130

Physics

High Energy Physics

High Energy Physics - Phenomenology

9 pages + 2 figures (not included), RCNP Preprint 068

Scientific paper

We calculate the values of the second moment $M_2^s$ of the flavor-singlet structure function $F_2^s$ for the pion and the kaon in QCD sum rules, and investigate how the results depend on their flavor structure (quark contents). Our calculations give similar values of $M_2^s$ for these two mesons, because of cancellation among several non-small factors. We emphasize that decay constants, meson masses and quark masses play an essential role in the above cancellation.

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