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QCD sum rule calculation for the tensor charge of the nucleon
He, HX; Ji, XD; He, HX , MIT,CTR THEORET PHYS,NUCL SCI LAB,CAMBRIDGE,MA 02139, USA.
1996
发表期刊PHYSICAL REVIEW D
ISSN0556-2821
卷号54期号:11页码:6897-6902
摘要The nucleon's tensor charges (isovector g(T)(u)psilon = delta u - delta d and isoscalar g(T)(s) = delta u + delta d) are calculated using the QCD sum rules in the presence of an external tensor field. In addition to the standard quark and gluon condensates, new condensates described by vacuum susceptibilities are induced by the external field. The latter contributions to g(T)(u)psilon and g(T)(s) are estimated to be small. After deriving some simplifying formulas, a detailed sum rule analysis yields g(T)(u)psilon = 1.29 +/- 0.51 and g(T)(s) = 1.37 +/- 0.55, or delta u = 1.33 +/- 0.53 and delta d = 0.04 +/- 0.02 at the scale of 1 GeV2.
部门归属MIT,DEPT PHYS,CAMBRIDGE,MA 02139; UNIV WASHINGTON,INST NUCL THEORY,SEATTLE,WA 98195; INST ATOM ENERGY,BEIJING 102413,PEOPLES R CHINA; ACAD SINICA,INST THEORET PHYS,BEIJING 100864,PEOPLES R CHINA
关键词Odd Parton Distributions Resonance Physics Magnetic-moments
学科领域Physics
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收录类别SCI
文献类型期刊论文
条目标识符http://ir.itp.ac.cn/handle/311006/12553
专题理论物理所1978-2010年知识产出
通讯作者He, HX , MIT,CTR THEORET PHYS,NUCL SCI LAB,CAMBRIDGE,MA 02139, USA.
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He, HX,Ji, XD,He, HX , MIT,CTR THEORET PHYS,NUCL SCI LAB,CAMBRIDGE,MA 02139, USA.. QCD sum rule calculation for the tensor charge of the nucleon[J]. PHYSICAL REVIEW D,1996,54(11):6897-6902.
APA He, HX,Ji, XD,&He, HX , MIT,CTR THEORET PHYS,NUCL SCI LAB,CAMBRIDGE,MA 02139, USA..(1996).QCD sum rule calculation for the tensor charge of the nucleon.PHYSICAL REVIEW D,54(11),6897-6902.
MLA He, HX,et al."QCD sum rule calculation for the tensor charge of the nucleon".PHYSICAL REVIEW D 54.11(1996):6897-6902.
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