منابع مشابه
The ππ scattering amplitude in chiral perturbation theory
We discuss ππ scattering in the framework of chiral perturbation theory. In particular, we recall the predictions [1] for the threshold parameters and for the phase shift difference δ 0 − δ 1 1 . 1 Notation The scattering amplitude for ππ scattering, π(p1)π (p2) → π (p3)π (p4) , reads 〈π(p4)π (p3)out|π (p1)π (p2)in〉 = 〈π (p4)π (p3)in|π (p1)π (p2)in〉 + i(2π)δ(Pf − Pi)T (s, t, u) , where T (s, t,...
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The semiclassical perturbation theory formalism of Hubbard and Miller [J. Chem. Phys. 78, 1801 (1983)] for atom surface scattering is used to explore the possibility of observation of heavy atom diffractive scattering. In the limit of vanishing ℏ the semiclassical theory is shown to reduce to the classical perturbation theory. The quantum diffraction pattern is sensitive to the characteristics ...
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ژورنال
عنوان ژورنال: Journal of Experimental and Theoretical Physics Letters
سال: 1997
ISSN: 0021-3640,1090-6487
DOI: 10.1134/1.567598