Chin. Phys. Lett.  1996, Vol. 13 Issue (12): 889-892    DOI:
Original Articles |
Tensor Charge of the Nucleon from QCD Sum Rules
HE Han-xin
China Institute of Atomic Energy, Beijing 102413 also Institute of Theoretical Physics, Chinese Academy of Sciences, Beijing 100080
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HE Han-xin 1996 Chin. Phys. Lett. 13 889-892
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Abstract The nucleon's tensor charges (isovector gvT = δu - δd and isoscalar gsT = δu + δd) are calculated using the QCD (quantum chromodynamics) sum rules in the presence of an external tensor field. By combining the mass sum rule of nucleon, we derive a simplified form for proton tensor charges, which gives gvT = 1.27 and gsT = 1.31, or δu = 1.29 and δd = 0.02 at the scale of nucleon mass, with an uncertainty about 20%.
Keywords: 12.38.Lg      14.20.Dh     
Published: 01 December 1996
PACS:  12.38.Lg (Other nonperturbative calculations)  
  14.20.Dh (Protons and neutrons)  
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https://cpl.iphy.ac.cn/       OR      https://cpl.iphy.ac.cn/Y1996/V13/I12/0889
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