On nature of scalar a0(980) and f0(980)-mesons
نویسندگان
چکیده
منابع مشابه
Note on Scalar Mesons
I. Introduction: The scalar mesons are especially important to understand because they have the same quantum numbers as the vacuum (J P C = 0 ++). Therefore they can condense into the vacuum and break a symmetry such as a global chiral U (N f) × U (N f). The details of how this symmetry breaking is implemented in Nature is one of the most profound problems in particle physics. In contrast to th...
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A separable potential model of three coupled channels ππ, KK and an effective 2π2π has been constructed and applied in the analysis of the isoscalar S-wave ππ and KK phase shifts and inelasticities. A relatively narrow scalar resonance of mass 1400-1460 MeV has been found. This resonance is consistent with the recent CERN observation of an eventual scalar glueball at 1500 MeV. Other resonances ...
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We investigate the structure of the scalar mesons f0(975) and a0(980) within realistic meson-exchange models of the ππ and πη interactions. Starting from a modified version of the Jülich model for ππ scattering we perform an analysis of the pole structure of the resulting scattering amplitude and find, in contrast to existing models, a somewhat large mass for the f0(975) (mf0 = 1015 MeV, Γf0 = ...
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ژورنال
عنوان ژورنال: Nuclear Physics A
سال: 2000
ISSN: 0375-9474
DOI: 10.1016/s0375-9474(00)00266-9