Pion-Proton Elastic Scattering inthe energy Range 300 to 700MeV

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Differential cross sections for elastic {pi}-p scattering have been measured at eight energies for positive pions and seven energies for negative pions. Energies ranged from 310 to 650 MeV. These measurements were made at the 3-BeV proton synchrotron at Saclay, France. A beam of pions from an internal BeO target was directed into a liquid hydrogen target. Fifty-one scintillation counters and a matrix-coincidence system were used to measure simultaneously elastic events at 21 angles and charged inelastic events at 78 {pi}-p angle pairs. Events were detected by a coincidence of pulses indicating the presence of an incident pion, scattered pion, ... continued below

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Ogden, Philip M. February 20, 1964.

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Differential cross sections for elastic {pi}-p scattering have been measured at eight energies for positive pions and seven energies for negative pions. Energies ranged from 310 to 650 MeV. These measurements were made at the 3-BeV proton synchrotron at Saclay, France. A beam of pions from an internal BeO target was directed into a liquid hydrogen target. Fifty-one scintillation counters and a matrix-coincidence system were used to measure simultaneously elastic events at 21 angles and charged inelastic events at 78 {pi}-p angle pairs. Events were detected by a coincidence of pulses indicating the presence of an incident pion, scattered pion, and recoil proton and the results were stored in the memory of a pulse-height analyzer. Various corrections were applied to the data and a least-squares fit was made to the results at each energy. The form of the fitting function was a power series in the cosine of the center-of-mass angle of the scattered pion. Integration under the fitted curves gave values for the total elastic cross section. The importance of certain angular-momentum states, particularly the D{sub 13} state near 600 MeV, is discussed. Several possible explanations are given of the enhancement in the {pi}{sup -}-p cross sections near 600 MeV.

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  • Report No.: UCRL--11180
  • Grant Number: DE-AC02-05CH11231
  • DOI: 10.2172/877341 | External Link
  • Office of Scientific & Technical Information Report Number: 877341
  • Archival Resource Key: ark:/67531/metadc880763

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  • February 20, 1964

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  • Sept. 21, 2016, 2:29 a.m.

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  • Nov. 4, 2016, 1:27 p.m.

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Ogden, Philip M. Pion-Proton Elastic Scattering inthe energy Range 300 to 700MeV, report, February 20, 1964; Berkeley, California. (digital.library.unt.edu/ark:/67531/metadc880763/: accessed August 16, 2017), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.