PION-MOMENTUM SPECTRUM FROM K- ABSORPTION IN HELIUM
The pion-momentum spectrum from K-absorption stars in helium is calculated in the impulse approximation. The kaon is assumed to be pseudoscalar and to be captured from the ls state. A final state consisting of free particles is used. The effect of final bound states is considered and taken into account phenomenologically. All final-state interactions are neglected. It is shown that the shape of the momentum spectrum is determined mainly by kinematics--i.e., the shapes and positions of the spectral peaks are quite insensitive to detailed dynamical assumptions such as the assumed K parity and capture orbit. The effect of final-state interactions is discussed. (auth)
- Research Organization:
- California Univ., Berkeley, CA (US). Lawrence Radiation Lab.
- DOE Contract Number:
- W-7405-ENG-48
- NSA Number:
- NSA-13-020526
- OSTI ID:
- 4215570
- Report Number(s):
- UCRL-8747
- Country of Publication:
- United States
- Language:
- English
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