First test of the E(5/4) Bose-Fermi symmetry: The structure of Ba-135

Fetea M. S., Cakirli R. B., Casten R. F., Warner D. D., McCutchan E. A., Meyer D. A., ...Daha Fazla

PHYSICAL REVIEW C, cilt.73, sa.5, 2006 (SCI-Expanded) identifier identifier

  • Yayın Türü: Makale / Tam Makale
  • Cilt numarası: 73 Sayı: 5
  • Basım Tarihi: 2006
  • Doi Numarası: 10.1103/physrevc.73.051301
  • Dergi Adı: PHYSICAL REVIEW C
  • Derginin Tarandığı İndeksler: Science Citation Index Expanded (SCI-EXPANDED), Scopus
  • İstanbul Üniversitesi Adresli: Evet

Özet

The first case of a Bose-Fermi critical point symmetry, E(5/4), representing the coupling of a j=3/2 fermion to an E(5) core, was recently proposed. Since Ba-134 has been found to be an empirical manifestation of E(5), we carried out a beta-decay experiment to study levels in Ba-135, where the last neutron can occupy the 2d(3/2) orbit, as the first test of E(5/4). The comparison shows significant areas of agreement as well as significant discrepancies. Comparison of interacting boson-fermion approximation and shell model calculations with the data are also presented.