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26 April 2024 |
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Inclusive K^+ meson production in proton-nucleus interactions | | M.Büscher
; V.Koptev
; M.Nekipelov
; Z.Rudy
; H.Ströher
; Yu.Valdau
; S.Barsov
; M.Hartmann
; V.Hejny
; V.Kleber
; N.Lang
; I.Lehmann
; S.Mikirtychiants
; H.Ohm
; | | Date: |
25 Dec 2003 | | Journal: | Eur.Phys.J. A22 (2004) 301-317 | | Subject: | nucl-ex | | Abstract: | The production of K^+ mesons in pA (A = D, C, Cu, Ag, Au) collisions has been investigated at the COoler SYnchrotron COSY-Jülich for beam energies T_p = 1.0 - 2.3 GeV. Double differential inclusive pC cross sections at forward angles theta < 12 degrees as well as the target-mass dependence of the K^+ momentum spectra have been measured with the ANKE spectrometer. Far below the free NN threshold at T_{NN}=1.58 GeV the spectra reveal a high degree of collectivity in the target nucleus. From the target-mass dependence of the cross sections at higher energies, the repulsive in-medium potential of K^+ mesons can be deduced. Using pN cross-section parameterisations from literature and our measured pD data we derive a cross-section ratio of sigma(pn -> K^+ X) / sigma(pp -> K^+ X) ~ (3-4). | | Source: | arXiv, nucl-ex/0401031 | | Services: | Forum | Review | PDF | Favorites | |
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