Low-energy ηd-resonance
نویسندگان
چکیده
منابع مشابه
ηd scattering in the region of the S 11 resonance
We have studied the reaction ηd → ηd close to threshold within a nonrela-tivistic three-body formalism. We considered several ηN and NN models, in particular potentials with separable form, fitted to the low-energy ηN and N N data to represent the two-body interactions. We found that with realistic two-body interactions a quasibound state does not exist in this system, although there is an enha...
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LL. Ametller and P. Talavera Departament de Física i Enginyeria Nuclear, Universitat Politècnica de Catalunya, Jordi Girona 5, E-08034 Barcelona, Spain Departament de Física i Enginyeria Nuclear, Universitat Politècnica de Catalunya, Comte Urgell 187, E-08036 Barcelona, Spain Institut de Ciencies del Cosmos, Universitat de Barcelona, Diagonal 647, E-08028 Barcelona, Spain (Received 8 February 2...
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Although there are phenomenological indications that the low-energy constants in the chiral lagrangian may be understood in terms of a finite number of hadronic resonances, it remains unclear how this follows from QCD. One of the arguments usually given is that low-energy constants are associated with chiral symmetry breaking, while QCD perturbation theory suggests that at high energy chiral sy...
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Unstable states of the eta meson and the 3He nucleus predicted using the time delay method were found to be in agreement with a recent claim of η-mesic 3He states made by the TAPS collaboration. Here, we extend this method to a speculative study of the unstable states occurring in the ηd and η4He elastic scattering. The T -matrix for η 4He scattering is evaluated within the Finite Rank Approxim...
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ژورنال
عنوان ژورنال: The European Physical Journal A
سال: 2000
ISSN: 1434-6001,1434-601X
DOI: 10.1007/s100500070064