The small axial charge of the N(1535) resonance

Abstract

There is a natural cancellation between the contributions of the $qqq$ and $qqqq\bar{q}$ components to the axial charge of the N(1535) resonance. While the probability of the former is larger than that of the latter, its coefficient in the axial charge expression is exceptionally small. The magnitude of two of the corresponding coefficients of the $qqqq\bar{q}$ components are in contrast large and have the opposite sign. This result provides a phenomenological illustration of the recent unquenched lattice calculation result that the axial charge of the N(1535) resonance is very small, if not vanishing \cite{takah}. The result sets an upper limit on the magnitude of the probability of $qqqq\bar{q}$ components as well.

arXiv comment5 pages

References in corpus (8)

• Low lying $qqqq\bar{q}$ states in the baryon spectrum
• Baryon Form Factors of Relativistic Constituent-Quark Models
• Chiral Unitary Approach To The N*N*pi, N*N*eta Couplings For The N*(1535) Resonance
• The role of $q\bar{q}$ components in the N(1440) resonance
• The $qqqq\bar{q}$ components and hidden flavor contributions to the baryon magnetic moments
• The role of five-quark components in gamma decay of the $\Delta (1232)$
• Chiral restoration in excited nucleons versus SU(6)
• The Role of 5-quark Components on the Nucleon Form Factors

Cited by in corpus (12)

• Study of $qqqc\bar{c}$ five quark system with three kinds of quark-quark hyperfine interaction
• The role of the $qqqq\bar{q}$ components in the electromagnetic transition ${\gamma }^{\ast }N\to N^{\ast }(1535)$
• Five-quark components in baryons
• Axial charges of octet and decuplet baryons
• Strong decay of low-lying $S_{11}$ and $D_{13}$ nucleon resonances to pseudoscalar mesons and octet baryons
• Role of five-quark components in radiative and strong decays of the Lambda(1405) resonance
• Spectrum of low-lying $s^{3}Q\bar{Q}$ configurations with negative parity
• Sea flavor content of octet baryons and intrinsic five-quark Fock states
• Axial charges of the nucleon and N* resonances
• Decay patterns of low-lying $N_{s\bar{s}}$ states to the strangeness channels
• Chiral symmetry and the properties of hadrons in the Generalised Nambu-Jona-Lasinio model
• The contributions of $qqqq\bar{q}$ components to the axial charges of proton and its resonances