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Effect of a Small Current Quark Mass on Bag Constant |
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| Authors: | ZONG Hong-Shi FENG Hong-Tao SUN Wei-Min DING Xiao-Ping PING Jia-Lun |
| Institution: | Department of Physics, Nanjing University, Nanjing 210093, China;CCAST (World Laboratory), P.O. Box 8730, Beijing 100080, China Department of Physics, Nanjing University, Nanjing 210093, China Department of Physics, Nanjing University, Nanjing 210093, China Department of Physics, Nanjing University, Nanjing 210093, China Department of Physics, Nanjing Normal University, Nanjing 210097, China |
| Abstract: | A method for obtaining the small current quark mass effect on the dressed quark propagator within the Dyson-Schwinger approach is developed. From this the small current quark mass dependence of the bag constant is evaluated. It is found that the bag constant decreases with the increasing current quark mass and the contribution of the current quark mass cannot be dropped. |
| Keywords: | Dyson-Schwinger approach explicit and dynamical chiral symmetry breaking bag constant smallcurrent quark mass |
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