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arXiv · hep-ph/9403279

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

Yoshinori Nishino
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Abstract

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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Yoshinori Nishino. 1994-03-12. The Second Moment of the Structure Function for Pseudoscalar Mesons in QCD Sum Rules. https://doi.org/10.1142/s0218301396000050

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