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Zhu, SL; Hwang, WYP; Dai, YB; Zhu, SL , Acad Sinica, Inst Theoret Phys, POB 2735, Beijing 100080, Peoples R China.
pi NN and pi NN(1535) couplings in QCD
Source PublicationPHYSICAL REVIEW C
KeywordSum-rules Magnetic-moments Baryon Masses Wave-function Resonance Physics Model
AbstractWe study the two point correlation function of two nucleon currents sandwiched between the vacuum and the pion state. The light cone QCD sum rules are derived for the pi NN coupling g(pi NN) and the pi NN(1535) coupling g(pi NN*). The contribution from the excited states and die continuum is subtracted cleanly through the double Borel transform with respect to the two external momenta p(1)(2), p(2)(2)=(p-q)(2). We first improve the original sum rule for g(pi NN) and determine the value of the pion wave function phi(pi)(u(0) = 1/2) = 1.5+/-0.2, which is a fundamental nonperturbative quantity similar to the quark condensate. Our calculation shows that the pi NN(1535) coupling is strongly suppressed. [S0556-2813(99)00301-5].
1999
ISSN0556-2813
Volume59Issue:1Pages:442-450
Subject AreaPhysics
Indexed BySCI
Citation statistics
Cited Times:14[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.itp.ac.cn/handle/311006/12210
CollectionSCI期刊论文
Corresponding AuthorZhu, SL , Acad Sinica, Inst Theoret Phys, POB 2735, Beijing 100080, Peoples R China.
Recommended Citation
GB/T 7714
Zhu, SL,Hwang, WYP,Dai, YB,et al. pi NN and pi NN(1535) couplings in QCD[J]. PHYSICAL REVIEW C,1999,59(1):442-450.
APA Zhu, SL,Hwang, WYP,Dai, YB,&Zhu, SL , Acad Sinica, Inst Theoret Phys, POB 2735, Beijing 100080, Peoples R China..(1999).pi NN and pi NN(1535) couplings in QCD.PHYSICAL REVIEW C,59(1),442-450.
MLA Zhu, SL,et al."pi NN and pi NN(1535) couplings in QCD".PHYSICAL REVIEW C 59.1(1999):442-450.
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