@article{b619418e9052417794a18923d5232120,
title = "Study of η and η′ Photoproduction at MAMI",
abstract = "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 η photoproduction 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 ηMAID fit to available η and η′ photoproduction data allows the determination of the N(1895)1/2- properties.",
author = "{(A2 Collaboration at MAMI)} and Kashevarov, {V. L.} and P. Ott and S. Prakhov and P. Adlarson and F. Afzal and Z. Ahmed and Akondi, {C. S.} and Annand, {J. R.M.} and Arends, {H. J.} and R. Beck and A. Braghieri and Briscoe, {W. J.} and F. Cividini and R. Codling and C. Collicott and S. Costanza and A. Denig and Downie, {E. J.} and M. Dieterle and {Ferretti Bondy}, {M. I.} and Fil'Kov, {L. V.} and A. Fix and S. Gardner and S. Garni and Glazier, {D. I.} and D. Glowa and W. Gradl and G. Gurevich and Hamilton, {D. J.} and D. Hornidge and D. Howdle and Huber, {G. M.} and A. K{\"a}ser and S. Kay and I. Keshelashvili and R. Kondratiev and M. Korolija and B. Krusche and J. Linturi and V. Lisin and K. Livingston and Macgregor, {I. J.D.} and R. Macrae and J. Mancell and Manley, {D. M.} and Martel, {P. P.} and McGeorge, {J. C.} and E. McNicol and Middleton, {D. G.} and Schott, {D. M.}",
note = "Funding Information: This material is based upon work supported by the Deutsche Forschungsgemeinschaft (SFB 1044), the European Community Research Activity under the FP7 program (Hadron Physics, Contract No. 227431), Schweizerischer Nationalfonds, the UK Sciences and Technology Facilities Council (Grants No. STFC 57071/1 and No. 50727/1), the U.S. Department of Energy, Offices of Science and Nuclear Physics (Awards No. DE-FG02-99-ER41110, No. DE-FG02-88ER40415, No. DE-FG02-01-ER41194, and No. DE-FG02-SC0016583), and the National Science Foundation (Grants No. PHY-1039130 and No. IIA-1358175), NSERC FRN: the MSE Program Nauka (Project No. 3.1113.2017/pp).",
year = "2017",
month = may,
day = "26",
doi = "10.1103/PhysRevLett.118.212001",
language = "English (US)",
volume = "118",
journal = "Physical Review Letters",
issn = "0031-9007",
publisher = "American Physical Society",
number = "21",
}