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Identification of D2*(3000) as the D2*(23P2) and exploring potential of undiscovered 2+ mesons via B decays

Shi-Hang Zhang1,2,3,*, Wen-Yuan Ke1,2,3,*, Su-Yan Pei1,2,3, Wei Li4, Xiao-Ze Tan5,6, Lili Zhu7, and Guo-Li Wang1,2,3,†

  • *These authors contributed equally.
  • †Contact author: wgl@hbu.edu.cn
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Phys. Rev. D 112, 113001 – Published 10 December, 2025

DOI: https://doi.org/10.1103/bch4-f17t

Abstract

Following the discovery of the D2*(3000), its mass and full width have been extensively studied. Yet its nature remains undetermined to date. Since it was discovered through nonleptonic decay of B mesons and the corresponding cascade process, we therefore in this paper investigate the nonleptonic and semileptonic decays of B meson to JP=2+ charmed mesons using the Bethe-Salpeter equation approach. Our calculations on nonleptonic B decays reveal that the unconfirmed resonance D2*(3000) aligns well with D2*(23P2) predictions. Other candidates, including D2*(13F2), D2*(33P2), and D2*(23F2), are excluded due to their very small branching ratios in B decays. Considering that the D2*(1F), D2*(3P), and D2*(2F) have not yet been experimentally observed, we investigate the feasibility of their detection in B-meson decays.

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Phys. Rev. D 112, 113001– Published 10 December, 2025
  • Received 10 July 2025
  • Accepted 21 November 2025
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