The (B)over-bar0→ D*+ (D)over-bar*0K- reaction to detect the I=0, JP=1+partner of the X0(2866)

We have chosen the (B) over bar (0)-> D*+ (D) over bar*K-0 reaction in order to observe the I= 0, J(P)= 1(+)(R-1) partner state of the X-0(2866) stemming from the D*+ (K) over bar* molecular picture. The reaction proceeds via external emission in the most favored Cabibbo decay mode and one observes the R(1)state as a very strong peak versus the background in the D*+ K- spectrum. The branching ratio for R1production in this reaction is estimated of the order of 4 x10(-3). The method used, applied to the B+-> D- D+ K+ reaction, produces a ratio of signal to background in the D- K+ spectrum in very good agreement with the LHCb experiment that observed the X-0(2866). (c) 2022 The Authors. Published by Elsevier B.V. This is an open access article under the CC BY license (http://creativecommons.org/licenses/by/4.0/). Funded by SCOAP(3).

Automated summary

In this study, we chose the (B) over bar (0)-> D*+ (D) over bar*K-0 reaction to observe the state of X-0(2866), which is a partner state of the D*+ (K) over bar* molecular picture. The reaction allows us to observe the R(1) state, which appears as a strong peak in the D*+ K- spectrum.