Göttingen 1997 – wissenschaftliches Programm

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HK: Hadronen und Kerne

HK 66: Struktur von Baryonen und Mesonen VII

HK 66.2: Vortrag

Donnerstag, 27. März 1997, 17:15–17:30, HS I

Nucleon tensor charges in the chiral quark-soliton model — •M. V. Polyakov^1,2, Hyun-Chul Kim¹, and K. Goeke¹ — ¹Institut f. Theoretische Physik II, Ruhr–Univ. Bochum — ²Petersburg Nuclear Physics Institute, St. Petersburg

The tensor charges of the nucleon are calculated in the framework of the chiral quark soliton model. The rotational 1/N_c and strange quark mass corrections are taken into account up to linear order. We obtain the following numerical values of the tensor charges: δ u=1.12, δ d=−0.42, and δ s=−0.008. In contrast with the axial charges, the tensor charges in our model are closer to those of the nonrelativistic quark model, in particular, the net number of the transversely polarized strange quarks in a transversely polarized nucleon δ s is compatible with zero.