6533b857fe1ef96bd12b434a
RESEARCH PRODUCT
Molecular picture for the X0(2866) as a D⁎K¯⁎ J = 0+ state and related 1+,2+ states
Raquel MolinaEulogio Osetsubject
PhysicsNuclear and High Energy PhysicsParticle physics010308 nuclear & particles physics0103 physical sciencesBound stateParity (physics)010306 general physics10. No inequality01 natural sciencesdescription
Abstract We recall the predictions made ten years ago about a bound state of J P = 0 + in I = 0 of the D ⁎ K ¯ ⁎ system, which is manifestly exotic, and we associate it to the X 0 ( 2866 ) state reported in the recent LHCb experiment. Fine tuning the parameters to reproduce exactly the mass and width of the X 0 ( 2866 ) state, we report two more states stemming from the same interaction, one with 1 + and the other with 2 + . For reasons of parity, the 1 + state cannot be observed in D K ¯ decay, and we suggest to observe it in the D ⁎ K ¯ spectrum. On the other hand, the 2 + state can be observed in D K ¯ decay but the present experiment has too small statistics in the region of its mass to make any claim. We note that measurements of the D ⁎ K ¯ spectrum and of the D K ¯ with more statistics should bring important information concerning the nature of the X 0 ( 2866 ) and related ones that could be observed.
| year | journal | country | edition | language |
|---|---|---|---|---|
| 2020-12-01 | Physics Letters B |