- Physical Review Journals
All JournalsPhysics Magazine

Physical Review D

Reuse & Permissions

It is not necessary to obtain permission to reuse this article or its components as it is available under the terms of the Creative Commons Attribution 4.0 International license. This license permits unrestricted use, distribution, and reproduction in any medium, provided attribution to the author(s) and the published article's title, journal citation, and DOI are maintained. Please note that some figures may have been included with permission from other third parties. It is your responsibility to obtain the proper permission from the rights holder directly for these figures.

Export citation

Export citation

Choose format for download:

Download Citation
  • Open Access

Bottom baryon decays into pseudoscalar meson and dark baryon within perturbative QCD approach

Ye Xing*

Yu-Ji Shi†

Xiao-hui Hu‡

  • School of Material Science and Physics, China University of Mining and Technology, Xuzhou 221000, China and Lanzhou Center for Theoretical Physics and Key Laboratory of Theoretical Physics of Gansu Province, Lanzhou University, Lanzhou 730000, China

  • *Contact author: xingye_guang@cumt.edu.cn
  • †Contact author: shiyuji@ecust.edu.cn
  • ‡Contact author: huxiaohui@cumt.edu.cn
PDF

Phys. Rev. D 112, 116018 – Published 19 December, 2025

DOI: https://doi.org/10.1103/xr47-p5n2

Abstract

In the work, we study the production of dark baryon ψ with the bottom-baryon decays Λb→Pψ under the perturbative quantum chromodynamics (QCD) approach. For the type-I/II models in B-mesogenesis scenarios, we calculate the form factors for bottom-baryon decays into meson. Using these results, we obtain branching ratios for Λb→Pψ decays. The PQCD approach calculations show these branching ratios reach O(10−5) in both models, with B(Λb→Kψ) specifically reaching O(10−4) in type-II. These accessible magnitudes make the predictions testable at the LHCb and B-factories with improved precision.

View figure in article

Physics Subject Headings (PhySH)

Article Text

References (49)

  1. A. D. Sakharov, Pis’ma Zh. Eksp. Teor. Fiz. 5, 32 (1967).
  2. G. Elor, M. Escudero, and A. Nelson, Phys. Rev. D 99, 035031 (2019).
  3. G. Alonso-Álvarez, G. Elor, and M. Escudero, Phys. Rev. D 104, 035028 (2021).
  4. F. Elahi, G. Elor, and R. McGehee, Phys. Rev. D 105, 055024 (2022).
  5. G. Elor and R. McGehee, Phys. Rev. D 103, 035005 (2021).
  6. M. Borsato, X. Cid Vidal, Y. Tsai, C. Vázquez Sierra, J. Zurita, G. Alonso-Álvarez, A. Boyarsky, A. Brea Rodríguez, D. Buarque Franzosi, G. Cacciapaglia et al., Rep. Prog. Phys. 85, 024201 (2022).
  7. G. Alonso-Álvarez, G. Elor, M. Escudero, B. Fornal, B. Grinstein, and J. Martin Camalich, Phys. Rev. D 105, 115005 (2022).
  8. E. Goudzovski, D. Redigolo, K. Tobioka, J. Zupan, G. Alonso-Álvarez, D. S. M. Alves, S. Bansal, M. Bauer, J. Brod, V. Chobanova et al., Rep. Prog. Phys. 86, 016201 (2023).
  9. C. Hadjivasiliou et al. (Belle Collaboration), Phys. Rev. D 105, L051101 (2022).
  10. A. B. Rodríguez, V. Chobanova, X. Cid Vidal, S. L. Soliño, D. M. Santos, T. Mombächer, C. Prouvé, E. X. R. Fernández, and C. Vázquez Sierra, Eur. Phys. J. C 81, 964 (2021).
  11. A. Khodjamirian and M. Wald, Phys. Lett. B 834, 137434 (2022).
  12. A. Boushmelev and M. Wald, Phys. Rev. D 109, 055049 (2024).
  13. G. Elor and A. W. M. Guerrera, J. High Energy Phys. 02 (2023) 100.
  14. A. Lenz, A. Mohamed, and Z. Wüthrich, J. High Energy Phys. 08 (2025) 141.
  15. C. O. Dib, J. C. Helo, V. E. Lyubovitskij, N. A. Neill, A. Soffer, and Z. S. Wang, J. High Energy Phys. 02 (2023) 224.
  16. L. Y. Li, C. D. Lü, J. Wang, and Y. B. Wei, Phys. Rev. D 109, 116012 (2024).
  17. Y. J. Shi, Y. Xing, and Z. P. Xing, Eur. Phys. J. C 84, 306 (2024).
  18. Y. J. Shi, Y. Xing, and Z. P. Xing, Eur. Phys. J. C 83, 744 (2023).
  19. Y. Xing and Z. P. Xing, Chin. Phys. C 43, 073103 (2019).
  20. J. J. Han, Y. Li, H. Li, Y. L. Shen, Z. J. Xiao, and F. S. Yu, Eur. Phys. J. C 82, 686 (2022).
  21. X. G. He, T. Li, X. Q. Li, and Y. M. Wang, Phys. Rev. D 75, 034011 (2007).
  22. X. G. He, T. Li, X. Q. Li, and Y. M. Wang, Phys. Rev. D 74, 034026 (2006).
  23. G. Li, F. l. Shao, and W. Wang, Phys. Rev. D 82, 094031 (2010).
  24. R. H. Li, C. D. Lu, W. Wang, and X. X. Wang, Phys. Rev. D 79, 014013 (2009).
  25. Z. Rui, C. Q. Zhang, J. M. Li, and M. K. Jia, Phys. Rev. D 106, 053005 (2022).
  26. F. Hussain, J. G. Korner, M. Kramer, and G. Thompson, Z. Phys. C 51, 321 (1991).
  27. C. D. Lu, Y. M. Wang, H. Zou, A. Ali, and G. Kramer, Phys. Rev. D 80, 034011 (2009).
  28. W. Loinaz and R. Akhoury, Phys. Rev. D 53, 1416 (1996).
  29. H. Li, S. Mishima, and A. I. Sanda, Phys. Rev. D 72, 114005 (2005).
  30. T. Kurimoto, H. Li, and A. I. Sanda, Phys. Rev. D 67, 054028 (2003).
  31. Y. Y. Keum, T. Kurimoto, H. N. Li, C. D. Lu, and A. I. Sanda, Phys. Rev. D 69, 094018 (2004).
  32. C. S. Kim, R. H. Li, and W. Wang, Phys. Rev. D 88, 034003 (2013).
  33. S. Aoki et al. (Flavour Lattice Averaging Group Collaboration), Eur. Phys. J. C 80, 113 (2020).
  34. Z. W. Liu, Z. T. Zou, Y. Li, X. Liu, and J. Wang, Eur. Phys. J. C 82, 59 (2022).
  35. Z. Rui, Y. Li, and W. F. Wang, Eur. Phys. J. C 77, 199 (2017).
  36. W. F. Wang and H. Li, Phys. Lett. B 763, 29 (2016).
  37. X. Liu, Z. Q. Zhang, and Z. J. Xiao, Chin. Phys. C 34, 157 (2010).
  38. J. Sun, Y. Yang, Q. Chang, and G. Lu, Phys. Rev. D 89, 114019 (2014).
  39. H. Li, Prog. Part. Nucl. Phys. 51, 85 (2003).
  40. N. G. Stefanis, W. Schroers, and H. C. Kim, arXiv:hep-ph/9812280.
  41. H. Li and K. Ukai, Phys. Lett. B 555, 197 (2003).
  42. C. H. Chen, Y. Y. Keum, and H. Li, Phys. Rev. D 64, 112002 (2001).
  43. T. Kurimoto, H. n. Li, and A. I. Sanda, Phys. Rev. D 65, 014007 (2002).
  44. H. Li, Phys. Rev. D 52, 3958 (1995).
  45. D. E. Soper, Nucl. Phys. B163, 93 (1980).
  46. A. Ali, G. Kramer, Y. Li, C. D. Lu, Y. L. Shen, W. Wang, and Y. M. Wang, Phys. Rev. D 76, 074018 (2007).
  47. C. D. Lü, W. Wang, Y. Xing, and Q. A. Zhang, Phys. Rev. D 97, 114016 (2018).
  48. R. Jakob and P. Kroll, Phys. Lett. B 315, 463 (1993); 319, 545(E) (1993).
  49. S. Navas et al., Phys. Rev. D 110, 030001 (2024).

Outline

Information

Phys. Rev. D 112, 116018– Published 19 December, 2025
  • Received 19 August 2025
  • Accepted 1 December 2025
Crossmark - Check for updates button
Creative Commons Logo

Published by the American Physical Society under the terms of the Creative Commons Attribution 4.0 International license. Further distribution of this work must maintain attribution to the author(s) and the published article’s title, journal citation, and DOI. Funded by SCOAP3.

Published by the American Physical Society

Sign In to Your Journals Account

Filter

Filter

Article Lookup

Enter a citation