THE TOTAL DERIVATIVE OPERATOR AND ITS INFLUENCE OVER THE QCD SUM RULES FOR BARYON MASS |
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| Authors: | Jue-ping LIU |
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| Affiliation: | Department of physics, Wuhan University, Wuhan, China |
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| Abstract: | We investigate two-point function of baryon operator including the total derivative operator. The upper bounds of baryon mass are improved by introducing the total derivative operator, and we explained further the reason why the improvemenfs for the mass bounds are obtained by means of the zero width approximation. The analysis for baryon A(1405) is made. |
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