Distorted-wave impulse-approximation (p,π) calculations: Effects of realistic wave functions and factors determining resonance position

1977 ◽  
Vol 16 (1) ◽  
pp. 313-321 ◽  
Author(s):  
Harold W. Fearing
Keyword(s):  
Impulse Approximation ◽  
Wave Functions ◽  
Distorted Wave ◽  
Resonance Position ◽  
Distorted Wave Impulse Approximation

Photoproduction of positive pions from 16O at medium energies

1980 ◽  
Vol 58 (8) ◽  
pp. 1151-1162 ◽  
Author(s):  
V. Devanathan ◽  
V. Girija ◽  
G. N. Sivarama Prasad
Keyword(s):  
Experimental Data ◽  
Nuclear Structure ◽  
Cross Sections ◽  
Impulse Approximation ◽  
Wave Functions ◽  
Fair Agreement ◽  
Free Nucleon ◽  
Distorted Wave ◽  
Distorted Wave Impulse Approximation ◽  
Γ Ray

The reaction 16O(γ,π+)16N has been studied in the distorted wave impulse approximation (DWIA) using the free-nucleon photopion amplitude. The nuclear distortion effects on the emitted pion and also the effect of nuclear structure are investigated in detail. The effect of nuclear distortion is found to be small at lower energies but is of great importance resulting in large absorption of pions around the (3,3) resonance. Using realistic nuclear wave functions, it is found that the DWIA yields cross sections in fair agreement with the experimental data at γ-ray energies above 230 MeV but higher values at lower energies.

Λ-HYPERNUCLEAR PRODUCTION IN $(K_{{\rm{stop}}}^-, \pi)$ REACTIONS

2011 ◽  
Vol 26 (03n04) ◽  
pp. 663-664
Author(s):  
VOJTĔCH KREJČIŘÍK ◽  
ALEŠ CIEPLY
Keyword(s):  
Impulse Approximation ◽  
Wave Functions ◽  
Distorted Wave ◽  
Production Rates ◽  
Microscopic Description ◽  
Present Contribution ◽  
Final State ◽  
Distorted Wave Impulse Approximation ◽  
Transition Amplitudes ◽  
The Impact

In the present contribution, we report on calculation of the Λ-hypernuclear production induced by the stopped kaon K-. We performed the calculation within the framework of the distorted wave impulse approximation and used chirally motivated transition amplitudes for the microscopic description of the elementary kaon-nucleon process. The sensitivity of the model to several effects was tested with a special attention paid to the impact caused by variations of the initial kaon and final state pion wave functions. The calculated production rates are reported for target nuclei from Lithium to Oxygen.

Analyzing powers for theC12(p→,p′)C12reaction at 120 MeV and a test of the distorted-wave impulse approximation

1981 ◽  
Vol 24 (5) ◽  
pp. 1834-1843 ◽  
Author(s):  
J. R. Comfort ◽  
G. L. Moake ◽  
C. C. Foster ◽  
P. Schwandt ◽  
C. D. Goodman ◽  
...  
Keyword(s):  
Impulse Approximation ◽  
Distorted Wave ◽  
Analyzing Powers ◽  
Distorted Wave Impulse Approximation

Distorted-wave impulse-approximation evaluation of sum rule for hypernuclear formation in forward (K−,π−)

1978 ◽  
Vol 17 (4) ◽  
pp. 1501-1504 ◽  
Author(s):  
G. N. Epstein ◽  
F. Tabakin ◽  
C. M. Vincent ◽  
A. Gal ◽  
L. S. Kisslinger
Keyword(s):  
Impulse Approximation ◽  
Distorted Wave ◽  
Sum Rule ◽  
Distorted Wave Impulse Approximation
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