Scalar-meson production in nucleon-nucleon collisions near threshold

Creative Commons License

Rekalo M., Tomasi-Gustafsson E.

EUROPEAN PHYSICAL JOURNAL A, cilt.18, sa.4, ss.697-709, 2003 (SCI-Expanded) identifier identifier

  • Yayın Türü: Makale / Tam Makale
  • Cilt numarası: 18 Sayı: 4
  • Basım Tarihi: 2003
  • Doi Numarası: 10.1140/epja/i2003-10060-0
  • Dergi Adı: EUROPEAN PHYSICAL JOURNAL A
  • Derginin Tarandığı İndeksler: Science Citation Index Expanded (SCI-EXPANDED), Scopus
  • Sayfa Sayıları: ss.697-709
  • Orta Doğu Teknik Üniversitesi Adresli: Hayır

Özet

We establish the model-independent spin structure of the matrix elements for the near-threshold scalar-meson production in pp and np collisions, when the final particles are emitted in S-state. Polarization phenomena are derived in a general form. The properties of the t-channel dynamics, which is based on different meson exchanges, are studied in terms of the s-channel parametrization of the matrix element. The predictions of a model, based on pi + sigma exchanges are also presented.