Study of η and η' Photoproduction at MAMI; Physical Review Letters; Vol. 118, iss. 21

Study of η and η' Photoproduction at MAMI; Physical Review Letters; Vol. 118, iss. 21

Détails bibliographiques
Parent link:Physical Review Letters: Scientific Journal.— , 1958-
Vol. 118, iss. 21.— 2017.— [212001, 5 p.]
Collectivité auteur: Национальный исследовательский Томский политехнический университет Исследовательская школа физики высокоэнергетических процессов
Autres auteurs: Kashevarov V. L. Viktor Leonidovich, Ott P., Prakhov S. N., Fiks (Fix) A. I. Alexander Ivanovich
Résumé:Title screen
The reactions γp→ηp and γp→η′p are measured from their thresholds up to the center-of-mass energy W=1.96  GeV with the tagged-photon facilities at the Mainz Microtron, MAMI. Differential cross sections are obtained with unprecedented statistical accuracy, providing fine energy binning and full production-angle coverage. A strong cusp is observed in the total cross section for ηphotoproduction at the energies in the vicinity of the η′ threshold, W=1896  MeV (Eγ=1447  MeV). Within the framework of a revised ηMAID isobar model, the cusp, in connection with a steep rise of the η′ total cross section from its threshold, can only be explained by a strong coupling of the poorly known N(1895)1/2− state to both ηp and η′p. Including the new high-accuracy results in the ηMAIDfit to available η and η′ photoproduction data allows the determination of the N(1895)1/2− properties.
Режим доступа: по договору с организацией-держателем ресурса
Langue:anglais
Publié: 2017
Sujets:
электронный ресурс
труды учёных ТПУ
Accès en ligne:https://doi.org/10.1103/PhysRevLett.118.212001
Format: Électronique Chapitre de livre
KOHA link:https://koha.lib.tpu.ru/cgi-bin/koha/opac-detail.pl?biblionumber=658141

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