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Two-body nonleptonic decays of Ωb→Ωc beyond tree level

Z. Neishabouri1, K. Azizi1,2,*, and H. R. Moshfegh1,3

  • *Contact author: kazem.azizi@ut.ac.ir
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Phys. Rev. D 113, 054025 – Published 18 March, 2026

DOI: https://doi.org/10.1103/mtyl-scfm

Abstract

We study the nonleptonic decays of Ωb→ΩcP(V) with eight pseudoscalar and vector mesons using the naive factorization approach. We analyze all relevant topologies (the tree-level, color-suppressed, and penguin topologies) of these decays and calculate the decay amplitude for each separately. We determine the decay rates and branching ratios and compare our results with those from other theoretical predictions. The results obtained may be useful for the analysis of the related data in both ongoing and future experiments.

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References (57)

  1. J. P. Lees et al. (BABAR Collaboration), Evidence for an excess of B¯→D(*)τ−ν¯τ decays, Phys. Rev. Lett. 109, 101802 (2012).
  2. R. Aaij et al. (LHCb Collaboration), Test of lepton universality using B+→K+ℓ+ℓ− decays, Phys. Rev. Lett. 113, 151601 (2014).
  3. R. Aaij et al. (LHCb Collaboration), Measurement of the ratio of branching fractions B(Bc+→J/ψτ+ντ)/B(Bc+→J/ψμ+νμ), Phys. Rev. Lett. 120, 121801 (2018).
  4. K. Abe et al. (Belle Collaboration), Observation of large CP violation in the neutral B meson system, Phys. Rev. Lett. 87, 091802 (2001).
  5. B. Aubert et al. (BABAR Collaboration), Measurement of CP violating asymmetries in B0 decays to CP eigenstates, Phys. Rev. Lett. 86, 2515 (2001).
  6. J. H. Christenson, J. W. Cronin, V. L. Fitch, and R. Turlay, Evidence for the 2π decay of the K20 meson, Phys. Rev. Lett. 13, 138 (1964).
  7. A. Abashian et al. (Belle Collaboration), Measurement of the CP violation parameter sin2ϕ1 in Bd0 meson decays, Phys. Rev. Lett. 86, 2509 (2001).
  8. Y. Chao et al. (Belle Collaboration), Evidence for direct CP violation in B0−>K+pi- decays, Phys. Rev. Lett. 93, 191802 (2004).
  9. B. Aubert et al. (BABAR Collaboration), Observation of direct CP violation in B0→K+π− decays, Phys. Rev. Lett. 93, 131801 (2004).
  10. S. Navas et al. (Particle Data Group), Review of particle physics, Phys. Rev. D 110, 030001 (2024).
  11. R. Aaij et al. (LHCb Collaboration), Study of the kinematic dependences of Λb0 production in pp collisions and a measurement of the Λb0→Λc+ π− branching fraction, J. High Energy Phys. 08 (2014) 143.
  12. R. Aaij et al. (LHCb Collaboration), Searches for Λb0 and Ξb0 decays to KS0pπ− and KS0pK− final states with first observation of the Λb0→KS0pπ− decay, J. High Energy Phys. 04 (2014) 087.
  13. R. Aaij et al. (LHCb Collaboration), Observation of the decay Λb0→Λc+τ−ν¯τ, Phys. Rev. Lett. 128, 191803 (2022).
  14. G. Aad et al. (ATLAS Collaboration), Measurement of the branching ratio Γ(Λb0→ψ(2S)Λ0)/Γ(Λb0→J/ψΛ0) with the ATLAS detector, Phys. Lett. B 751, 63 (2015).
  15. I. Heredia-De La Cruz (D0 Collaboration), Measurement of the production fraction times branching fraction f(b→Λb)×B(Λb→J∧ψΛ), arXiv:1109.6083.
  16. T. Aaltonen et al. (CDF Collaboration), Observation of the Ωb− and measurement of the properties of the Ξb− and Ωb−, Phys. Rev. D 80, 072003 (2009).
  17. T. Aaltonen et al. (CDF Collaboration), Measurement of the masses and widths of the bottom baryons Σb+− and Σb*+−, Phys. Rev. D 85, 092011 (2012).
  18. R. Aaij et al. (LHCb Collaboration), Study of the production of Λb0 and B¯0 hadrons in pp collisions and first measurement of the Λb0→J/ψpK− branching fraction, Chin. Phys. C 40, 011001 (2016).
  19. R. Aaij et al. (LHCb Collaboration), Evidence for the strangeness-changing weak decay Ξb−→Λb0π−, Phys. Rev. Lett. 115, 241801 (2015).
  20. Q. P. Xu and A. N. Kamal, Inclusive decays of bottom baryons, Phys. Rev. D 47, 2849 (1993).
  21. R. Mohanta, A. K. Giri, and M. P. Khanna, Charmless two-body hadronic decays of Λb baryon, Phys. Rev. D 63, 074001 (2001).
  22. C. Q. Geng, C. W. Liu, and T. H. Tsai, Nonleptonic two-body weak decays of Λb in modified MIT bag model, Phys. Rev. D 102, 034033 (2020).
  23. Z. Neishabouri and K. Azizi, Investigation of the semileptonic decays Ξb(′)→Ξc(′)ℓν¯ℓ, Phys. Rev. D 112, 054009 (2025).
  24. R. N. Faustov and V. O. Galkin, Semileptonic decays of Λb baryons in the relativistic quark model, Phys. Rev. D 94, 073008 (2016).
  25. R. L. Singleton, Semileptonic baryon decays with a heavy quark, Phys. Rev. D 43, 2939 (1991).
  26. M. A. Ivanov, V. E. Lyubovitskij, J. G. Korner, and P. Kroll, Heavy baryon transitions in a relativistic three quark model, Phys. Rev. D 56, 348 (1997).
  27. L. Khajouei and K. Azizi, Semileptonic and nonleptonic weak decays of bottom baryons Ωb(*), arXiv:2510.01429.
  28. T. M. Aliev, K. Azizi, and A. Ozpineci, Radiative decays of the heavy flavored baryons in light cone QCD sum rules, Phys. Rev. D 79, 056005 (2009).
  29. K. Azizi, R. Khosravi, and F. Falahati, Analyzing of the B(q)→D(q)(D*(q)) P and B(q)→D(q) (D*(q)) V decays within the factorization approach in QCD, Int. J. Mod. Phys. A 24, 5845 (2009).
  30. R. Aaij et al. (LHCb Collaboration), Observation of CP violation in two-body B(s)0-meson decays to charged pions and kaons, J. High Energy Phys. 03 (2021) 075.
  31. R. Aaij et al. (LHCb Collaboration), Observation of CP violation in charm decays, Phys. Rev. Lett. 122, 211803 (2019).
  32. R. Aaij et al. (LHCb Collaboration), Measurement of CP asymmetries in Λb0→ph- decays, Phys. Rev. D 111, 092004 (2025).
  33. R. Aaij et al. (LHCb Collaboration), Observation of charge–parity symmetry breaking in baryon decays, Nature (London) 643, 1223 (2025).
  34. A. D. Sakharov, Violation of CP invariance, C asymmetry, and baryon asymmetry of the universe, Pis’ma Zh. Eksp. Teor. Fiz. 5, 32 (1967).
  35. T. A. Aaltonen et al. (CDF Collaboration), Mass and lifetime measurements of bottom and charm baryons in pp¯ collisions at s=1.96  TeV, Phys. Rev. D 89, 072014 (2014).
  36. C. Q. Zhang, J. M. Li, M. K. Jia, and Z. Rui, Nonleptonic two-body decays of Λb→Λcπ, ΛcK in the perturbative QCD approach, Phys. Rev. D 105, 073005 (2022).
  37. M. A. Ivanov, J. G. Korner, V. E. Lyubovitskij, and A. G. Rusetsky, Exclusive nonleptonic bottom to charm baryon decays including nonfactorizable contributions, Mod. Phys. Lett. A 13, 181 (1998).
  38. S. Catani and L. Trentadue, Resummation of the QCD perturbative series for hard processes, Nucl. Phys. B327, 323 (1989).
  39. J. C. Collins and D. E. Soper, Back-to-back jets in QCD, Nucl. Phys. B193, 381 (1981); B213, 545(E) (1983).
  40. J. C. Collins, D. E. Soper, and G. F. Sterman, Transverse momentum distribution in Drell-Yan pair and W and Z boson production, Nucl. Phys. B250, 199 (1985).
  41. G. Buchalla, A. J. Buras, and M. E. Lautenbacher, Weak decays beyond leading logarithms, Rev. Mod. Phys. 68, 1125 (1996).
  42. Z. Neishabouri, K. Azizi, and H. R. Moshfegh, Semileptonic Ωb→Ωcℓν−ℓ transition in full QCD, Phys. Rev. D 110, 014010 (2024).
  43. M. Thomson, Modern Particle Physics (Cambridge University Press, Cambridge, England, 2013), ISBN [Amazon][WorldCat], [Amazon][WorldCat].
  44. A. Faessler, T. Gutsche, M. A. Ivanov, J. G. Korner, and V. E. Lyubovitskij, Semileptonic decays of double heavy baryons in a relativistic constituent three-quark model, Phys. Rev. D 80, 034025 (2009).
  45. T. Gutsche, M. A. Ivanov, J. G. Körner, V. E. Lyubovitskij, V. V. Lyubushkin, and P. Santorelli, Theoretical description of the decays Λb→Λ(*)(12±,32±)+J/ψ, Phys. Rev. D 96, 013003 (2017).
  46. A. J. Buras, M. Jamin, and M. E. Lautenbacher, Two loop anomalous dimension matrix for Delta S=1 weak nonleptonic decays. 2. O(alpha-alpha-s), Nucl. Phys. B400, 75 (1993).
  47. M. Ciuchini, E. Franco, G. Martinelli, and L. Reina, The Delta S=1 effective Hamiltonian including next-to-leading order QCD and QED corrections, Nucl. Phys. B415, 403 (1994).
  48. N. G. Deshpande and X. G. He, Gluonic penguin B decays in standard and two Higgs doublet models, Phys. Lett. B 336, 471 (1994).
  49. S. Narison, A fresh look into mc,b and precise fD(s),B(s) from heavy-light QCD spectral sum rules, Phys. Lett. B 718, 1321 (2013).
  50. T. Gutsche, M. A. Ivanov, J. G. Körner, and V. E. Lyubovitskij, Nonleptonic two-body decays of single heavy baryons ΛQ, ΞQ, and ΩQ (Q=b, c) induced by W emission in the covariant confined quark model, Phys. Rev. D 98, 074011 (2018).
  51. Y. S. Li and X. Liu, Restudy of the color-allowed two-body nonleptonic decays of bottom baryons Ξb and Ωb supported by hadron spectroscopy, Phys. Rev. D 105, 013003 (2022).
  52. D. Becirevic, P. Boucaud, J. P. Leroy, V. Lubicz, G. Martinelli, F. Mescia, and F. Rapuano, Nonperturbatively improved heavy—light mesons: Masses and decay constants, Phys. Rev. D 60, 074501 (1999).
  53. Z. X. Zhao, Weak decays of heavy baryons in the light-front approach, Chin. Phys. C 42, 093101 (2018).
  54. C. K. Chua, Color-allowed bottom baryon to s-wave and p-wave charmed baryon nonleptonic decays, Phys. Rev. D 100, 034025 (2019); 100, 034025 (2019).
  55. C. K. Chua, Color-allowed bottom baryon to s-wave and p-wave charmed baryon non-leptonic decays, Proc. Sci., EPS-HEP2019 (2020) 471 [arXiv:1905.00153v2].
  56. H. Y. Cheng, Nonleptonic weak decays of bottom baryons, Phys. Rev. D 56, 2799 (1997); 99, 079901(E) (2019).
  57. R. V. Patel, M. Shah, S. Patel, and B. Pandya, Singly heavy Ω baryon spectroscopy in the relativistic framework of an independent quark model, Phys. Rev. D 112, 056025 (2025).

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Phys. Rev. D 113, 054025– Published 18 March, 2026
  • Received 2 January 2026
  • Accepted 2 March 2026
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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.

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