Journal Article PreJuSER-24901

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Forward K+ production in subthreshold pA collisions at 1.0 GeV

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2001
APS College Park, Md.

Physical review letters 87, 022301 () [10.1103/PhysRevLett.87.022301]

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Abstract: K+-meson production in pA (A = C, Cu, Au) collisions has been studied using the ANKE spectrometer at an internal target position of the COSY-Julich accelerator. The complete momentum spectrum of kaons emitted at forward angles, theta less than or equal to 12 degrees, has been measured for a beam energy of T-p = 1.0 GeV, far below the free NN threshold of 1.58 GeV. The spectrum does not follow a thermal distribution at low kaon momenta and the larger moments reflect a high degree of collectivity in the target nucleus.

Keyword(s): p nucleus: inclusive reaction ; carbon ; copper ; gold ; K+: hadroproduction ; threshold ; production: small-angle ; K+: momentum spectrum ; dependence: mass number ; magnetic spectrometer: ANKE ; Juelich COSY PS ; 1 GeV


Note: Record converted from VDB: 12.11.2012; 4 pages, 3 figures

Contributing Institute(s):
  1. Institut 2 (Experimentelle Kernphysik II) (IKP-2)
  2. Zentralinstitut für Elektronik (ZEL)
Research Program(s):
  1. Experimente an COSY (20.45.0)
  2. On-Line-Datenverarbeitung (52.20.0)

Appears in the scientific report 2001
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Notes: This version is available at the following Publisher URL: http://prl.aps.org
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 Record created 2012-11-13, last modified 2025-01-29