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

PHYSICS LETTERS B (2022)

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PHYSICS LETTERS B
卷 832, 期 -, 页码 -

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DOI: 10.1016/j.physletb.2022.137219

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Astronomy & Astrophysics Physics, Nuclear Physics, Particles & Fields

资金

  1. National Natural Science Foundation of China [12175066, 11975009, 12147219]
  2. CIDEGENT program of the Generalitat Valenciana [CIDEGENT/2019/015]
  3. Spanish national grants [PID2019-106080GB-C21, PID2020-112777GB-I00]
  4. Spanish Ministerio de Economia y Competitividad (MINECO)
  5. European FEDER funds [FIS2017-84038C2-1-P B]
  6. Generalitat Valenciana [PROMETEO/2020/023]
  7. European Union [824093]

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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.
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).

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