New narrow  N (1685) and  N (1726)? Remarks on the interpretation of the neutron anomaly as an interference phenomenon

V. Kuznetsov; V. Sumachev; M. L. Sperduto; G. Russo; M. V. Polyakov; F. Tortorici; F. Mammoliti; N. Kozlenko; A. Gridnev; V. Brio; V. Bellini; C. M. Sutera

doi:10.1134/S0021364017100010

New narrow N(1685) and N(1726)? Remarks on the interpretation of the neutron anomaly as an interference phenomenon

Авторы: Kuznetsov V.¹^,2, Sumachev V.¹, Sperduto M.L.²^,3, Russo G.²^,3, Polyakov M.V.¹^,4, Tortorici F.²^,3, Mammoliti F.²^,3, Kozlenko N.¹, Gridnev A.¹, Brio V.²^,3, Bellini V.²^,3, Sutera C.M.²
Учреждения:
1. Petersburg Nuclear Physics Institute
2. NFN–Sezione di Catania
3. Dipartimento di Fisica ed Astronomia
4. Institute für Theoretische Physik II
Выпуск: Том 105, № 10 (2017)
Страницы: 625-630
Раздел: Fields, Particles, and Nuclei
URL: https://journals.rcsi.science/0021-3640/article/view/160182
DOI: https://doi.org/10.1134/S0021364017100010
ID: 160182

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Different interpretations of narrow structures at W ~ 1.68 and 1.72 GeV observed in several reactions are discussed. It is questionable whether interference phenomena could explain the whole complex of experimental findings. More probable hypotheses would be the existence of one or two narrow resonances N(1685) and N(1726) and/or the sub-threshold virtual KΣ and ωp production (cusps).