THE pd -> eta(3) He REACTION AND eta(3) He BOUND STATE? THE B*(B)over-bar*rho SYSTEM

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Oset E., Xie J. J., Liang W. H., Moskal P., Skurzok M., Wilkin C., ...Daha Fazla

ACTA PHYSICA POLONICA B, cilt.48, sa.10, ss.1793-1799, 2017 (SCI-Expanded) identifier identifier

  • Yayın Türü: Makale / Tam Makale
  • Cilt numarası: 48 Sayı: 10
  • Basım Tarihi: 2017
  • Doi Numarası: 10.5506/aphyspolb.48.1793
  • Dergi Adı: ACTA PHYSICA POLONICA B
  • Derginin Tarandığı İndeksler: Science Citation Index Expanded (SCI-EXPANDED), Scopus
  • Sayfa Sayıları: ss.1793-1799
  • Kocaeli Üniversitesi Adresli: Evet

Özet

We analyze the data on cross sections and asymmetries for the pd(dp) -> eta(3) He reaction close to threshold and look for bound states of the eta(3) He system. Fitting these data in terms of an eta(3) He optical potential, we find a local Breit-Wigner form of the eta(3) He amplitude T below threshold with a clear peak in vertical bar T vertical bar(2), which corresponds to an eta(3) He binding of about 0.3 MeV and a width of about 3 MeV. However, this corresponds to a pole in the complex plane above threshold. We also discuss a state found for B (B) over bar*rho with J = 3.