scholarly journals Relative probability of recoilless Λ-production in nuclei in the plane-wave impulse approximation

2020 ◽  
Vol 1 ◽  
pp. 53
Author(s):  
M. E. Grypeos ◽  
G. A. Lalazissis ◽  
S. E. Massen ◽  
C. P. Panos
Keyword(s):  
Plane Wave ◽  
Harmonic Oscillator ◽  
Impulse Approximation ◽  
Overlap Integrals ◽  
Relative Probability ◽  
Plane Wave Impulse Approximation ◽  
Approximate Expressions

The problem of estimating the relative probability Ρ of recoilless Λ production in nuclei by means of the (K-,π-) reaction is investigated in the plane-wave impulse approximation, which leads to approximate expressions of the "Debye-Waller type". The values of the relevant average overlap integrals between Λ and neutron normalized harmonic oscillator wave func­ tions are close to 1.

scholarly journals Analysis of factorization in (e,e′p) reactions: A survey of the relativistic plane wave impulse approximation

1998 ◽  
Vol 632 (3) ◽  
pp. 323-362 ◽  
Author(s):  
J.A. Caballero ◽  
T.W. Donnelly ◽  
E. Moya de Guerra ◽  
J.M. Udías
Keyword(s):  
Plane Wave ◽  
Impulse Approximation ◽  
Plane Wave Impulse Approximation

scholarly journals Total cross section of the reaction γd → π–pp in the threshold energy region

2020 ◽  
Vol 64 (2) ◽  
pp. 159-163 ◽  
Author(s):  
E. S. Kokoulina ◽  
M. I. Levchuk ◽  
M. N. Nevmerzhitsky ◽  
R. G. Shulyakovsky
Keyword(s):  
Plane Wave ◽  
Total Cross Section ◽  
Cross Section ◽  
Cross Sections ◽  
Threshold Energy ◽  
Impulse Approximation ◽  
Final State ◽  
Plane Wave Impulse Approximation ◽  
Theoretical Predictions ◽  
Good Agreement

In the framework of the diagrammatic approach, the total cross section of near-threshold π– photoproduction on the deuteron is calculated. Contributions of the diagrams corresponding to the plane wave impulse approximation as well as to NN- and πN-interactions in the final state have been taken into account. We have compared the theoretical predictions with the results of the recent measurements performed at the MAX IV laboratory of the Lund University. There is good agreement with the data at photon energies from 147 to 155 MeV. However, at 158 and 160 MeV, the theoretical predictions significantly overestimate the measured cross sections.

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