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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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| Cite this article: |
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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%.
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| Keywords:
12.38.Lg
14.20.Dh
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Published: 01 December 1996
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| PACS: |
12.38.Lg
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(Other nonperturbative calculations)
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14.20.Dh
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(Protons and neutrons)
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