Flavor-Singlet Axial-Vector Current in Quark Model Within Background Field

CHEN Kun; YAN Mu-Lin

Chinese Physics C> 1993, Vol. 17> Issue(2) : 114-118

Flavor-Singlet Axial-Vector Current in Quark Model Within Background Field

CHEN Kun ^, ,
YAN Mu-Lin

University of Science and Technology of China,Hefei,230026Fundamental Physics Center,University of Science and Technology of China,Hefei 230026

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Abstract：
We calculate the flavor-singlet axial-vector current in a quark model within pseudoscalar background-field through the Seeley-DeWitt coefficients.This current is responsible for the quark spin content of proton,and is of O(1) in the large-N_e expansion.

References

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J. Ashman et al. (EMC collabrouon), Phys. Lett., 206B, (1988), 364.[2]J. Ashman et al. (EMC collaboration), Nucl. Phys., B328(1989), 1.[3]Bing An Li, Mu Lin Yan、nd Keh Fei Liu, Phys. Rev., D43(1991), 1515.[4]Bing An Li and Mu Lin Yan, Phys. Lett., 8282(1992), 435.[5]R. D. Ball, Phys. Reports, 18?(1989), I--189.[6]J. Schwinge:, phys, Rev., 93(1951), 664.[7]S. Brodsky, J. Ellis and M. Karliner, Phys Lett., B208(1988), 309.[8]Z. Ryzak, Phys. Lett., 8217(1989), 325.[9]I. Aitchison et al,Phys. Lett,165B(1985), 162

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CHEN Kun and YAN Mu-Lin. Flavor-Singlet Axial-Vector Current in Quark Model Within Background Field[J]. Chinese Physics C, 1993, 17(2): 114-118.

CHEN Kun and YAN Mu-Lin. Flavor-Singlet Axial-Vector Current in Quark Model Within Background Field[J]. Chinese Physics C, 1993, 17(2): 114-118. shu

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Received: 1900-01-01
Revised: 1900-01-01

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沈阳化工大学材料科学与工程学院沈阳 110142

Flavor-Singlet Axial-Vector Current in Quark Model Within Background Field

CHEN Kun ^,
YAN Mu-Lin

Corresponding author: CHEN Kun,

University of Science and Technology of China,Hefei,230026Fundamental Physics Center,University of Science and Technology of China,Hefei 230026

Received Date: 1900-01-01
Accepted Date: 1900-01-01
Available Online: 1993-02-05

Abstract: We calculate the flavor-singlet axial-vector current in a quark model within pseudoscalar background-field through the Seeley-DeWitt coefficients.This current is responsible for the quark spin content of proton,and is of O(1) in the large-N_e expansion.