• Media type: E-Article
  • Title: Kaon pair production close to threshold
  • Contributor: Winter, P. [Author]; Wolke, M. [Author]; Kilian, K. [Author]; Klaja, P. [Author]; Moskal, P. [Author]; Oelert, W. [Author]; Piskor-Ignatowicz, C. [Author]; Przerwa, J. [Author]; Ritman, J. [Author]; Rozek, T. [Author]; Sefzick, T. [Author]; Siemaszko, M. [Author]; Adam, H. H. [Author]; Smyrski, J. [Author]; Täschner, A. [Author]; Wüstner, P. [Author]; Zhang, Z. [Author]; Zipper, W. [Author]; Budzanowski, A. [Author]; Czyzykiewicz, R. [Author]; Grzonka, D. [Author]; Janusz, M. [Author]; Jarczyk, L. [Author]; Kamys, B. [Author];
  • imprint: North-Holland Publ., 2006
  • Published in: Physics letters / B 635, 23 - 29 (2006). doi:10.1016/j.physletb.2006.02.037
  • Language: English
  • DOI: https://doi.org/10.1016/j.physletb.2006.02.037
  • ISSN: 0370-2693
  • Keywords: Lambda(1405) ; channel cross section: energy dependence ; p p: inelastic scattering ; magnetic spectrometer: experimental results ; kaon ; threshold ; Juelich COSY PS ; K: pair production ; mass spectrum: (K+ K-) ; p p --> 2p K+ K- ; near-threshold meson production ; antikaon ; strangeness ; mass spectrum: (p K-) ; boson: exchange ; phase space
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  • Description: The total cross section of the reaction pp -> ppK(+)K(-) has been measured at excess energies Q = 10 MeV and 28 MeV with the magnetic spectrometer COSY-11. The new data show a significant enhancement of the total cross section compared to pure phase space expectations or calculations within a one boson exchange model. In addition, we present invariant mass spectra of two particle subsystems. While the K+K- system is rather constant for different invariant masses, there is an enhancement in the pK(-) system towards lower masses which could at least be partially connected to the influence of the Lambda (1405) resonance. (c) 2006 Elsevier B.V. All rights reserved.
  • Access State: Open Access