Withdrawn as duplicate: Structure of the Ω baryon and the kaon cloud

Abstract

We investigate the effects of the kaon cloud on the electromagnetic and axial-vector form factors of the Ω− baryon within the framework of the chiral quark-soliton model. We first derive the profile function of the chiral soliton in such a way that the kaon Yukawa tail is properly produced self-consistently. Then, we compute the electromagnetic form factors of the Ω− baryon. The results for the electromagnetic form factors are compared with the lattice data. We find that the results with the kaon tail employed are in better agreement with the lattice data, compared with those obtained with the pion tail. We also study the axial-vector form factors of the Ω− baryon, examining the effects of the kaon cloud.

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“…Characterized by three valence strange quarks with aligned spins and the absence of valence up or down quarks, the Ω − is expected to show less relativistic effects in comparison with other octet and decuplet baryons. Yet, even after more than five decades of research, many aspects of its physical properties, apart from its charge and magnetic moment, remain largely uncharted [8][9][10][11][12][13][14][15][16][17][18][19][20][21][22][23][24]. While the decuplet baryon model predicts a spin-3/2 for the Ω − , direct measurements of its spin have been ongoing [25][26][27][28].…”