Regge phenomenology in 
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 and 
<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML"><mml:mi>η</mml:mi></mml:math>
 photoproduction

Kashevarov, V. L.; Ostrick, M.; Tiator, L.

doi:10.1103/physrevc.96.035207

Cited by 45 publications

(74 citation statements)

References 51 publications

(92 reference statements)

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“…This may provide a peak structure or a dip, generally a Fano resonance, depending on the interference. 1 Actually, an enhancement of the differential cross section of the γp → ηp reaction was observed just below the η p threshold in experiments [56,57], which was claimed to be attributable to an S 11 resonance in their analyses. This might imply the signal of the η p bound state.…”

Section: B the η N Scattering Amplitudementioning

confidence: 98%

Theoretical study of photoproduction of anη′Nbound state on a deuteron target with forward proton emission

Sekihara

Sakai

2016

Phys. Rev. C

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Possibilities of observing a signal of an η n bound state are investigated by considering photoproductions of the η and η mesons on a deuteron target with forward proton emission. For this purpose, we take the η n interaction from the linear σ model with a coupling to ηn, in which an s-wave η n bound state can be dynamically generated, and we fix the γp → ηp and η p scattering amplitudes so as to reproduce the experimental cross sections with forward proton emission. By using these γp → η ( ) p and η ( ) n → η ( ) n amplitudes, we calculate cross sections of the γ d → ηnp and η np reactions with forward proton emission in single and η ( ) -exchange double-scattering processes. As a result, we find that the signal of the η n bound state can be seen below the η n threshold in the ηn invariant mass spectrum of the γ d → ηnp reaction and is comparable with the contribution from the quasifree η production above the η n threshold. We also discuss the behavior of the signal of the η n bound state in several experimental conditions and model parameters.

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Section: B the η N Scattering Amplitudementioning

confidence: 98%

Theoretical study of photoproduction of anη′Nbound state on a deuteron target with forward proton emission

Sekihara

Sakai

2016

Phys. Rev. C

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“…The major background under the peak from η → e + e − γ decays was found to be from the reaction γp → π 0 π 0 p. The MC simulation of this reaction was carried out in the same way as reported in Ref. [46]. Although this background is smooth in the region of the η mass and cannot mimic an η → e + e − γ peak, its MC simulation was used to optimize the signalto-background ratio and to parametrize the background under the signal.…”

Section: B Monte Carlo Simulationsmentioning

confidence: 99%

Measurement of the ω→π0e+e− and η→e+e

Adlarson¹,

Afzal²,

Aguar-Bartolomé³

et al. 2017

Phys. Rev. C

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Measurement of the ω → π 0 e + e − and η → e + e − γ Dalitz decays with the A2 setup at MAMI The Dalitz decays η → e + e − γ and ω → π 0 e + e − have been measured in the γp → ηp and γp → ωp reactions, respectively, with the A2 tagged-photon facility at the Mainz Microtron, MAMI. The value obtained for the slope parameter of the electromagnetic transition form factor of η, Λ −2 η = (1.97 ± 0.11tot ) GeV −2 , is in good agreement with previous measurements of the η → e + e − γ and η → µ + µ − γ decays. The uncertainty obtained in the value of Λ −2 η is lower than in previous results based on the η → e + e − γ decay. The value obtained for the ω slope parameter, Λ −2 ωπ 0 = (1.99 ± 0.21tot) GeV −2 , is somewhat lower than previous measurements based on ω → π 0 µ + µ − , but the results for the ω transition form factor are in better agreement with theoretical calculations, compared to earlier experiments.

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“…. Our results are compared to the previous data from GRAAL [4], CB-ELSA [5,6], DAPHNE [7], TAPS [6], and Crystal Ball/TAPS [8].…”

Section: Total Cross Sectionmentioning

confidence: 84%

Double neutral pion photoproduction off the proton with FOREST at ELPH

Fujimura

Fukasawa

et al. 2016

EPJ Web of Conferences

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Abstract. Total cross section for the double neutral pion photoproduction off the proton is presented in the incident photon energy range of 0.58 to 1.15 GeV. The data were accumulated in the years 2009-2010, recorded by a 4π EM calorimeter at ELPH, named FOREST. The number of recorded events obtained during this period is 1.6×10 9 for a hydrogen target. Two neutral pions are reconstructed via detecting their decay products, four gammas (2π 0 → 4γ). Compared to the previous results obtained by other groups, our data are in good agreement with theirs within error bars.

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Regge phenomenology in π0 and η photoproduction

Cited by 45 publications

References 51 publications

Theoretical study of photoproduction of anη′Nbound state on a deuteron target with forward proton emission

Theoretical study of photoproduction of anη′Nbound state on a deuteron target with forward proton emission

Measurement of the ω→π0e+e− and η→e+e

Double neutral pion photoproduction off the proton with FOREST at ELPH

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