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Persistent URL http://purl.org/net/epubs/work/25500349
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Record Id 25500349
Title Pion - deuteron scattering
Abstract What happens in piondeuteron scattering which cannot be understood directly from our knowledge of pionnucleon? Experimental data on total cross-sections and elastic scattering are reviewed from the threshold to the GeV region, with particular attention to recent results. A new measurement of the scattering length, from the strong interaction shift in the ground state of the mesic atom, agrees with pionnucleon scattering lengths and multiple scattering theory. Elastic scattering at high energy and small angles now agrees well with Glauber theory. However, the magnitude of the contribution of inelastic states to Glauber shadowing in the total cross-section is confused both experimentally and theoretically. At large angles and low energy, the Glauber approximation fails. Recent calculations of Gabathuler and Wilkin using multiple scattering theory improve agreement with data in the N*(1230) region. Total cross-sections in the resonance region may now be explained quantitatively by collision broadening of the resonance on the spectator nucleon; a modification of Glauber theory to accommodate this is given. The choice of kinematics for pionnucleon collisions in the deuteron is settled by appeal to the experiment. The way of handling piondeuteron-nucleonnucleon is clarified. Other examples of collision broadening are discussed in pion-nucleus total cross-sections and in high energy hadron collisions.
Organisation PPD , SRC
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Language English (EN)
Type Details URI(s) Local file(s) Year
Report Rutherford Laboratory Technical Reports RL 74127. SRC, 1974. 1974