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Investigating the η1′(1855) exotic state in the J/ψ→η1′(1855)η(′) decays
- Source :
- Physics Letters B, Vol 842, Iss , Pp 137965- (2023)
- Publication Year :
- 2023
- Publisher :
- Elsevier, 2023.
-
Abstract
- An analysis of the J/ψ→ηη′γ decay by the BESIII collaboration claims the observation of an exotic state η1(1855) with IGJPC=0+1−+. To establish its C-parity partner η1′(1855) in the picture of the KK¯1(1400) molecular state, we propose that J/ψ→η1′(1855)η(′) receives the main contributions from the final state interaction of KK⁎(K+K⁎−, K−K⁎+, K0K¯⁎0, and K¯0K⁎0). Specifically, K and K⁎ in J/ψ→KK⁎ decays transform as η1′(1855)η(′), by exchanging a K1(1400). We predict B(J/ψ→η1′(1855)η)=(6.3−3.5+12.6)×10−6, and B(J/ψ→η1′(1855)η′)=(6.5−4.6+6.6)×10−6, which can be studied in the J/ψ→K⁎K¯⁎η(′) decays.
Details
- Language :
- English
- ISSN :
- 03702693
- Volume :
- 842
- Issue :
- 137965-
- Database :
- Directory of Open Access Journals
- Journal :
- Physics Letters B
- Publication Type :
- Academic Journal
- Accession number :
- edsdoj.8830863e7ed74ccfa30caf021314d78f
- Document Type :
- article
- Full Text :
- https://doi.org/10.1016/j.physletb.2023.137965