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Chiral Symmetry and Scalars

 

作者: S. F. Tuan,  

 

期刊: AIP Conference Proceedings  (AIP Available online 1902)
卷期: Volume 619, issue 1  

页码: 495-498

 

ISSN:0094-243X

 

年代: 1902

 

DOI:10.1063/1.1482477

 

出版商: AIP

 

数据来源: AIP

 

摘要:

The suggestion by Jaffe that if &sgr; is a lightq2q¯2state 0++then even the fundamental chiral transformation properties of the &sgr; becomesunclear, has stimulated much interest. Adler pointed out that in fact the seminal work on chiral symmetry via PCAC consistency, is really quite consistent with the &sgr; being predominantlyq2q¯2. This interpretation was actually backed by subsequent work on effective Lagrangian methods for linear and non linear realizations. More recent work of Achasov suggests that intermediate four‐quark states determine amplitudes involving other scalarsa0(980) andf0(980) below 1 GeV, and the report by Ning Wu that study on &sgr; meson inJ/&psgr; → &ohgr;&pgr;+&pgr;−continue to support a nonqq¯&sgr; with mass as low as 390 MeV. It is also noted that more recent re‐analysis of &pgr;Kscattering by S. Ishidaet al.together with the work of the E791 Collaboration, support the existence of the scalar &kgr; particle with comparatively light mass as well. © 2002 American Institute of Physics

 

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