QCD Sum Rule for $\Lambda$(1405)

Abstract

Motivated by the recently constructed interpolation field for S${}_{11}$(1535), we propose a new interpolating field for $\Lambda$(1405). Using this current, we calculate the mass of $\Lambda$(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 $\Lambda$(1405) to be very close to its experimental value.

8 pages (including one figure), revtex

References in corpus (2)

• Negative-parity Nucleon Resonance in the QCD Sum Rule
• QCD Sum Rule for S_{11}(1535)

Cited by in corpus (3)

• Exotic Quark Structure of Lambda(1405) in QCD Sum Rule
• Calculation of $g_{\pi N{S}_{11}}$ and $g_{\eta N{S}_{11}}$ Couplings in QCD Sum Rules
• Sigma meson in QCD sum rules using a two quark current with derivatives