X (3960) seen in Ds+ Ds- as the X (3930) state seen in D+D

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BAYAR M. K., Feijoo A., Oset E.

Physical Review D, vol.107, no.3, 2023 (SCI-Expanded) identifier identifier

  • Publication Type: Article / Article
  • Volume: 107 Issue: 3
  • Publication Date: 2023
  • Doi Number: 10.1103/physrevd.107.034007
  • Journal Name: Physical Review D
  • Journal Indexes: Science Citation Index Expanded (SCI-EXPANDED), Scopus, Academic Search Premier, Aerospace Database, Chemical Abstracts Core, INSPEC, zbMATH
  • Kocaeli University Affiliated: Yes

Abstract

We perform a calculation of the interaction of the DD¯, DsD¯s coupled channels and find two bound states, one coupling to DD¯ and another one at higher energies coupling mostly to Ds+Ds-. We identify this latter state with the X0(3930) seen in the D+D- mass distribution in the B+→D+D-K+ decay, and also show that it produces an enhancement of the Ds+Ds- mass distribution close to threshold which is compatible with the recent LHCb observation in the B+→Ds+Ds-K+ decay which has been identified as a new state, X0(3960).