Photoproduction of η′-mesons with the 4π-detector SAPHIR

Plötzke, R.; Barth, J.; Braun, Wolfgang; Burgwinkel, R.; Ernst, J.; Glander, K. H.; Goers, S.; Hannappel, J.; Joepen, N.; Jüngst, H.; Kalinowsky, H.; Kirch, U.; Klein, Frank; Klempt, E.; Kozela, A.; Lawall, R.; Link, J. M.; Menze, D.; Neuerburg, W.; Ostrick, M.; Paganetti, M.; Paul, E.; Pee, H. van; Schulday, I.; Schwille, W. J.; Smyrski, J.; Thoma, U.; Tiator, L.; Tran, M. Q.; Wehnes, F.; Wiegers, B.; Wieland, F. W.; Wißkirchen, J.

doi:10.1016/s0370-2693(98)01444-0

Cited by 73 publications

(96 citation statements)

References 14 publications

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“…Thus, the study of η ′ photoproduction becomes an interest topic in both experiment and theory. However, due to the small production rate for the η ′ via an electromagnetic probe, it had been a challenge for experiment to measure the η ′ production cross section in the photoproduction reaction [1][2][3].…”

Section: Introductionmentioning

confidence: 99%

“…Theoretical analyses can be found in the literature which were performed to interpret the old data of γp → η ′ p [1][2][3]. Zhang et al [4] first analyzed the old data with an effective Lagrangian approach, in which the off-shell contributions from the low-lying resonances in (1.5 ∼ 1.7) GeV were excluded.…”

Section: Introductionmentioning

confidence: 99%

“…In 2003 Chiang and Yang developed a Reggeized model for η and η ′ photoproduction on protons [9]. In this model, the differential cross section data from [3] can be well described by the interference of an S 11 resonance with a mass in the range of (1.932 ∼ 1.959) GeV and the t channel Regge trajectory ex- * E-mail: zhongxh@ihep.ac.cn † E-mail: zhaoq@ihep.ac.cn changes. In 2004 Nakayama and Haberzett [10] analyzed the differential cross section data from [3] within a relativistic meson exchange model of hadronic interactions.…”

Section: Introductionmentioning

confidence: 99%

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η′photoproduction on the nucleon in the quark model

Zhong

Zhao

2011

Phys. Rev. C

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A chiral quark-model approach is adopted to study the γp → η ′ p and γn → η ′ n. Good descriptions of the recent observations from CLAS and CBELSA/TAPS are obtained. Both of the processes are governed by S 11 (1535) and u channel background. Strong evidence of an n = 3 shell resonance D 15 (2080) is found in the reactions, which accounts for the bump-like structure around W = 2.1 GeV observed in the total cross section and excitation functions at very forward angles. The S 11 (1920) seems to be needed in the reactions, with which the total cross section near threshold for the γp → η ′ p is improved slightly. The polarized beam asymmetries show some sensitivities to D 13 (1520), although its effects on the differential cross sections and total cross sections are negligible. There is no obvious evidence of the P-, D 13 -, F-and G-wave resonances with a mass around 2.0 GeV in the reactions.

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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η′photoproduction on the nucleon in the quark model

Zhong

Zhao

2011

Phys. Rev. C

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“…The first modern measurement with a tagged photon beam came from the SAPHIR experiment at ELSA [96], which used the γp → pη → pπ + π − η → pπ + π − π + π − π 0 reaction chain. However, it was based on only 250 events so that the statistical quality was not significantly better than the earlier bubble chamber results.…”

Section: Photoproduction Of η -Mesons Off Nucleonsmentioning

confidence: 99%

“…The total cross section and angular distributions from this measurement have been interpreted in completely different ways. In the SAPHIR paper [96], the main emphasis was on the rapid rise of the total cross section from threshold and the linear behaviour of the angular distributions (i.e., ∝ cos θ * ) between the backward and forward directions. The authors argued that the minimal model to describe such a behaviour has to include two resonances of opposite parity and the most natural choice is an S 11 and a P 11 state.…”

Section: Photoproduction Of η -Mesons Off Nucleonsmentioning

confidence: 99%

Production of η and η′ mesons on nucleons and nuclei

Krusche¹,

Wilkin²

2015

Progress in Particle and Nuclear Physics

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The production of η and η mesons in photon-and hadron-induced reactions on free and quasifree nucleons and on nuclei is reviewed. The extensive database on γN → ηN , for both proton and neutron targets, is described in detail and its implications for the search for N resonances much heavier than the dominant S 11 (1535) discussed. Though less is currently known about the production of the η or of ηπ pairs, these also offer tantalizing prospects in the search for the missing isobars. The more limited data available on pion-induced production are still necessary ingredients in the partial wave analysis discussed.The production of the η-meson in pp and pn collisions shows once again the strong influence of the S 11 (1535) isobar, which is in contrast to the relatively weak behaviour seen near threshold for η production. This difference is reflected in the important final state interaction effects of the η in nuclei that may even lead to this meson being "bound" in some systems. The evidence for this is reviewed for both γA and pA collisions. The inclusive photoproduction of η, η , and ηπ pairs from nuclei provides further information regarding the production mechanism and the interaction of the η and η with nuclei and the ηπ pairs may even allow access to low mass ηA systems that are forbidden in direct single-meson photoproduction.

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Meson Photoproduction Near Threshold

Soyeur

2000

Particle Production Spanning MeV and TeV Energies

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Photoproduction of η′-mesons with the 4π-detector SAPHIR

Cited by 73 publications

References 14 publications

η′photoproduction on the nucleon in the quark model

η′photoproduction on the nucleon in the quark model

Production of η and η′ mesons on nucleons and nuclei

Meson Photoproduction Near Threshold

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