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Pätzold, J. [Author]; Bashkanov, M. [Author]; Höistad, B. [Author]; Johanson, J. [Author]; Johansson, A. [Author]; Johansson, T. [Author]; Kilian, K. [Author]; Kullander, S. [Author]; Kupsc, A. [Author]; Marciniewski, P. [Author]; Morosov, B. [Author]; Oelert, W. [Author]; Bilger, R. [Author]; Ruber, R.J.M.Y. [Author]; Schepkin, M. [Author]; Scobel, W. [Author]; Stepaniak, J. [Author]; Sukhanov, A. [Author]; Turowiecki, A. [Author]; Wagner, G. J. [Author]; Wilhelmi, Z. [Author]; Zabierowski, J. [Author]; Zlomanczuk, J. [Author]; Brodowski, W. [Author]; [...]

The pp to pp pi pi- reaction studied in the low-energy tail of the Roper resonance

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  • Media type: E-Article
  • Title: The pp to pp pi pi- reaction studied in the low-energy tail of the Roper resonance
  • Contributor: Pätzold, J. [Author]; Bashkanov, M. [Author]; Höistad, B. [Author]; Johanson, J. [Author]; Johansson, A. [Author]; Johansson, T. [Author]; Kilian, K. [Author]; Kullander, S. [Author]; Kupsc, A. [Author]; Marciniewski, P. [Author]; Morosov, B. [Author]; Oelert, W. [Author]; Bilger, R. [Author]; Ruber, R.J.M.Y. [Author]; Schepkin, M. [Author]; Scobel, W. [Author]; Stepaniak, J. [Author]; Sukhanov, A. [Author]; Turowiecki, A. [Author]; Wagner, G. J. [Author]; Wilhelmi, Z. [Author]; Zabierowski, J. [Author]; Zlomanczuk, J. [Author]; Brodowski, W. [Author]; [...]
  • imprint: Inst., 2003
  • Published in: Physical review / C 67, R052202 (2003). doi:10.1103/PhysRevC.67.052202
  • Language: English
  • DOI: https://doi.org/10.1103/PhysRevC.67.052202
  • ISSN: 0556-2813
  • Keywords: p p --> 2p pi+ pi- ; channel cross section: energy dependence ; pi: pair production ; experimental results ; p: angular distribution ; mass spectrum ; p p: inelastic scattering ; N(1440): hadroproduction ; angular distribution: two-pion ; Uppsala CELSIUS Stor ; 0.775 GeV-cms
  • Origination:
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  • Description: Exclusive measurements of the pp-->pppi(+)pi(-) reaction have been carried out at T-p=775 MeV at CELSIUS using the PROMICE/WASA setup. Together with data obtained at lower energy, they point to a dominance of the Roper excitation in this process. From the observed interference of its decay routes N-*-->Nsigma and N-*-->Deltapi-->Nsigma, their energy-dependent relative branching ratio is determined.
  • Access State: Open Access