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Protduction of K+ mesons in proton-nucleus interactions | | M.Buescher
; M.Nekipelov
; | | Date: |
4 Jul 2002 | | Subject: | nucl-ex | | Abstract: | The production of K+ mesons in pA (A= C, Cu, Ag, Au) collisions has been investigated at the COoler SYnchrotron COSY-Juelich at beam energies T=1.0 ... 2.3 GeV using the ANKE spectrometer. ANKE allows to measure double differential cross sections for K+ production at forward angles theta< 12 degr. in a wide momentum range. The cross sections obtained in these experiments together with those from literature show a uniform behavior as functions of momentum transfer and excitation energy of the residual nucleus. At the lowest measured beam energy, far below the free NN-threshold (T_NN=1.58 GeV), the data reveal a high degree of collectivity in the target nucleus. The spectra obtained above threshold should allow one to extract the nuclear K+ potential with an accuracy of better than +/-3 MeV. Information about the mechanisms leading to K+ production can be obtained from K+p and K+d coincidence measurements. | | Source: | arXiv, nucl-ex/0207002 | | Services: | Forum | Review | PDF | Favorites | |
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