Göttingen 1997 – wissenschaftliches Programm

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HK: Hadronen und Kerne

HK 22: Schwache Wechselwirkungen, fundamentale Symmetrien II

HK 22.4: Vortrag

Dienstag, 25. März 1997, 15:15–15:30, HS D

Weak electricity of the Nucleon in the Chiral Quark-Soliton Model — •Hyun-Chul Kim¹, Maxim V. Polyakov², and Klaus Goeke¹ — ¹Institute for Theoretical Physics II, Ruhr-University Bochum, D-44780 Bochum, Germany — ²Petersburg Nuclear Physics Institute, Gatchina, St. Petersburg 188350, Russia

The induced pseudotensor constant (weak electricity) of the nucleon is calculated in the framework of the chiral quark soliton model. This quantity originates from the G–parity violation and hence is proportional to m_u−m_d. We obtain for m_u−m_d=−5 MeV a value of g_T/g_A =−0.0043.