Positive pion photoproduction from hydrogen at photon energies between 500 MeV and 1,400 MeV in forward direction

Althoff, K.H.; Anton, G.; Böck, B.; Bour, D. P.; Ferber, W.; Gelhausen, H. W.; Jahnen, T.; Kaul, O.; Menze, D.; Meyer, W.; Miczaika, T.; Müller, R.; Roderburg, E.; Rühm, W.; Schilling, E.; Schwille, W. J.; Sundermann, D.; Wagener, K.

doi:10.1007/bf01571360

Cited by 26 publications

(10 citation statements)

References 19 publications

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“…The BCC model [15,16] is a combined analysis of photoproduction experiments with πN , ηN , KΛ and KΣ final states. π 0 and η photoproduction data from CB-ELSA [7,23], Mainz-TAPS [1] and GRAAL [2,17] as well as results on γp → nπ + [24] were used. Data available from SAPHIR [25] , CLAS [26] and LEPS [27,28] for the reactions γp → K + Λ, γp → K + Σ 0 and γp → K 0 Σ + were also included.…”

Section: Discussionmentioning

confidence: 99%

Measurement of η photoproduction on the proton from threshold to 1500 MeV

et al. 2007

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Beam asymmetry and differential cross-section for the reaction γp → ηp were measured from production threshold to 1500 MeV photon laboratory energy. The two dominant neutral decay modes of the η-meson, η → 2γ and η → 3π 0 , were analyzed. The full set of measurements is in good agreement with previously published results. Our data were compared with three models. They all fit satisfactorily the results but their respective resonance contributions are quite different. The possible photoexcitation of a narrow state N (1670) was investigated and no evidence was found. PACS. 13.60.Le Meson production-13.88.+e Polarization in interactions and scattering-25.20.Lj Pho-toproduction reactions

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Section: Discussionmentioning

confidence: 99%

Measurement of η photoproduction on the proton from threshold to 1500 MeV

et al. 2007

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“…Total cross sections were reported in [73][74][75][76][77][78][79][80][81][82][83][84][85][86][87]. Again, some discrepancies show up, at energies above 1600 MeV and in the forward region, between the new CLAS data and former measurements.…”

Section: The Reaction γP → π + Nmentioning

confidence: 99%

“…The γp → π + n differential cross section with the current solution. The data are taken from [75,[77][78][79][80][81][82]85] in the vicinity of thresholds. Of course, the elastic πN scattering amplitude and the pion photoproduction amplitude are influenced by opening new channels and the couplings to the new channels can be estimated from their effect on the scattering and photoproduction amplitudes.…”

Section: Photoproduction Multipolesmentioning

confidence: 99%

Photoproduction of pions and properties of baryon resonances from a Bonn-Gatchina partial-wave analysis

et al. 2010

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Abstract. Masses, widths and photocouplings of baryon resonances are determined in a coupled-channel partial wave analysis of a large variety of data. The Bonn-Gatchina partial wave formalism is extended to include a decomposition of t-and u-exchange amplitudes into individual partial waves. The multipole transition amplitudes for γp → pπ 0 and γp → nπ + are given and compared to results from other analyses.

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“…However, since combinations of more than one of these data sets was used to obtain the differential cross section for each kinematic bin, a 4% absolute normalization uncertainty is assumed for simplicity. The 618 differential cross sections obtained in this experiment are compared to the world data set [25,26,27,28,29,30,31,32,33,34,35,36,37,38,39,40,41,42,43,44,45] in Figs. 4 − 6, along with a number of representative fits described below.…”

Section: Uncertaintiesmentioning

confidence: 99%

π+photoproduction on the proton for photon energies from 0.725 to 2.875 GeV

Dugger¹,

Ritchie²,

Ball³

et al. 2009

Phys. Rev. C

122

104

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Differential cross sections for the reaction γ p → n π + have been measured with the CEBAF Large Acceptance Spectrometer (CLAS) and a tagged photon beam with energies from 0.725 to 2.875 GeV. Where available, the results obtained here compare well with previously published results for the reaction. Agreement with the SAID and MAID analyses is found below 1 GeV. The present set of cross sections has been incorporated into the SAID database, and exploratory fits have been made up to 2.7 GeV. Resonance couplings have been extracted and compared to previous determinations. With the addition of these cross sections to the world data set, significant changes have occurred in the high-energy behavior of the SAID cross-section predictions and amplitudes.

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Positive pion photoproduction from hydrogen at photon energies between 500 MeV and 1,400 MeV in forward direction

Cited by 26 publications

References 19 publications

Measurement of η photoproduction on the proton from threshold to 1500 MeV

Measurement of η photoproduction on the proton from threshold to 1500 MeV

Photoproduction of pions and properties of baryon resonances from a Bonn-Gatchina partial-wave analysis

π+photoproduction on the proton for photon energies from 0.725 to 2.875 GeV

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