Probing an axial-vector tetraquark Z(s) via its semileptonic decay Z(s) -> X(4274)(I)over-bar nu(I)

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Sundu H., BARSBAY B., AGAEV S. S., Azizi K.

EUROPEAN PHYSICAL JOURNAL A, vol.54, no.7, 2018 (SCI-Expanded) identifier identifier

  • Publication Type: Article / Article
  • Volume: 54 Issue: 7
  • Publication Date: 2018
  • Doi Number: 10.1140/epja/i2018-12552-0
  • Journal Name: EUROPEAN PHYSICAL JOURNAL A
  • Journal Indexes: Science Citation Index Expanded (SCI-EXPANDED), Scopus
  • Kocaeli University Affiliated: Yes

Abstract

The semileptonic decays of the open charm-bottom axial-vector tetraquark Z(s) = [cs][(b) over bar(s) over bar] to X(4274) (l) over bar nu(l) = e, mu, tau are explored by means of the QCD three-point sum rule method. Both Z(s) and X(4274) = [cs][(cs) over bar] are treated as color sextet diquark-antidiquark states. The full width of the decays Z(s) -> X(4274) (l) over bar nu(l) is found. Obtained predictions for Gamma(Z(s) -> X(4274)(l) over bar nu(l)) demonstrate that, as in the case of the conventional hadrons, the semileptonic transitions form a very small part of its full width.