Measurement of the<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:mi>γ</mml:mi><mml:mi mathvariant="italic">p</mml:mi><mml:mspace /><mml:mo>→</mml:mo><mml:mspace /><mml:mrow><mml:msup><mml:mrow><mml:mi>π</mml:mi></mml:mrow><mml:mrow><mml:mo>+</mml:mo></mml:mrow></mml:msup></mml:mrow><mml:mi mathvariant="italic">n</mml:mi></mml:math>Reaction near Threshold

Korkmaz, E.; Kolb, N. R.; Hutcheon, D.A.; O’Rielly, G. V.; Bergstrom, J.C.; Feldman, G.; Jordán, D.; Opper, A. K.; Pywell, R. E.; Sawatzky, B.; Skopik, D. M.

doi:10.1103/physrevlett.83.3609

Cited by 31 publications

(35 citation statements)

References 10 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…While we have obtained a reasonable fit to the available π 0 p differential and total cross sections (we fit rather well the new threshold TRIUMF-SAL π + n cross sections [22], and Mainz π 0 p Σ at 160 MeV [19]), the multipole amplitudes have no cusp built into the π + n threshold region. Both energy-dependent and single-energy solutions (SES) were obtained from fits to the combined π 0 p, π + n, π − p, and π 0 n databases to 2 GeV.…”

Section: A Analysismentioning

confidence: 53%

Analysis of pion photoproduction data

et al. 2002

View full text Add to dashboard Cite

A partial-wave analysis of single-pion photoproduction data has been completed. This study extends from threshold to 2 GeV in the laboratory photon energy, focusing mainly on the influence of new measurements and modeldependence in the choice of parameterization employed above the two-pion threshold. Results are used to evaluate sum rules and estimate resonance photo-decay amplitudes. These are compared to values obtained in the MAID analysis.

show abstract

Section: A Analysismentioning

confidence: 53%

Analysis of pion photoproduction data

et al. 2002

View full text Add to dashboard Cite

show abstract

“…[29]. The latter work extends the results of low-energy theorems for threshold pion photoproduction within the framework of HBChPT by fitting the unknown low-energy constants appearing at O(p 3 ) to data on radiative pion capture [30] and pion photoproduction [31]. obtained from the HDT [21], SAID09 [22], MAID07 [23], and DMT [24] analyses as well as the predictions of HBChPT [29].…”

Section: Results For the Gdh Sum Rule And The Forward Spin Polarmentioning

confidence: 95%

Higher order forward spin polarizability

2010

View full text Add to dashboard Cite

As a guideline for future experiments to extract the four (leading) spin polarizabilities of the nucleon, we have constructed the forward amplitude for polarized Compton scattering by dispersion integrals. These integrals have been saturated by recently measured helicity-dependent photoabsorption cross sections as well as predictions for pion photoproduction multipoles from several phenomenological descriptions and chiral perturbation theory. The comparison of these results corroborates the strategy to extract the spin polarizabilities by fitting them to polarizedCompton data and fixing all higher order spin effects by dispersion relations based on pion photoproduction multipoles.

show abstract

“…Eighty four of these cells formed a neutron detector array [9] that was used at the Saskatchewan Accelerator Laboratory (SAL) tagged photon facility [10] for a precision measurement of the gp ! np þ cross-section near the pion threshold by detecting the recoil neutrons [11]. Eighty eight of these cells now form a large acceptance neutron detector array known as Blowfish [12] which is currently being used at the Duke University High Intensity Gamma Source (HIGS) [13].…”

Section: Methodsmentioning

confidence: 99%