(K-, K+) reaction on nuclear targets at P(K-) = 1.65-GeV/c
Apr, 1992
19 pages
Published in:
- Nucl.Phys.A 546 (1992) 588-606
- Published: 1992
Report number:
- KEK-PREPRINT-92-4
Experiments:
- KEK
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Abstract: (Elsevier)
The forward-angle cross sections of the (K − , K + ) reaction on nuclear targets of C, Al, Cu, Ag and Pb have been measured at the K − incident momentum of 1.65 GeV/ c in a side range K + momentum. The obtained K + momentum spectrum for each target nucleus is characterized by a peak in the high-momentum region ( p K + > 0.95 GeV/ c ) and a broad bump in the low-momentum region ( p K + < 0.95 GeV/ c ). A comparison of the measured spectrum with a DWIA calculation indicates that the quasifree process, K − (p) → K + Ξ − , is dominant in the high-momentum region. The target mass-number dependence of the cross section is well fitted with A α , where α is 0.38 ± 0.03 for the high-momentum region and 0.56 ± 0.02 for the low-momentum region. The result indicates that the quasifree process takes place at the peripheral of the target nucleus, whereas the two-step processes are dominant in the low-momentum region.- Nuclear reactions
- K- nucleus: nuclear reaction
- carbon
- aluminum
- copper
- silver
- lead
- charge exchange: multiple
- multiple: charge exchange
- exchange: strangeness
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