QCD Sum Rule for Λ(1405)
Hungchong Kim, Su Houng Lee
Abstract
Motivated by the recently constructed interpolation field for S11(1535), we propose a new interpolating field for Λ(1405). Using this current, we calculate the mass of Λ(1405) based on the conventional QCD sum rule analysis. By calculating the Wilson coefficients up to dimension 8 operators and taking into account the mass corrections from s-quark, we find the calculated mass of Λ(1405) to be very close to its experimental value.
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