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Revealing the nature of double-strangeness pentaquark states via femtoscopic correlation functions

Zheng-Ting Lai1, Jun-Xu Lu1,*, Zhi-Wei Liu2,3,†, A. Martínez Torres4,‡, K. P. Khemchandani4,§, and Li-Sheng Geng1,5,6,∥

  • 1School of Physics, Beihang University, Beijing 102206, People’s Republic of China
  • 2Institute for Advanced Study in Nuclear Energy and Safety, College of Physics and Optoelectronic Engineering, Shenzhen University, Shenzhen 518060, People’s Republic of China
  • 3Shenzhen Key Laboratory of Nuclear and Radiation Safety, Shenzhen 518060, People’s Republic of China
  • 4Universidade Federal de São Paulo, C. P. 01302-907, São Paulo, Brazil
  • 5Peng Huanwu Collaborative Center for Research and Education, Beihang University, Beijing 100191, People’s Republic of China
  • 6Southern Center for Nuclear-Science Theory (SCNT), Institute of Modern Physics, Chinese Academy of Sciences, Huizhou 516000, People’s Republic of China

  • *Contact author: ljxwohool@buaa.edu.cn
  • †Contact author: liuzhw@szu.edu.cn
  • ‡Contact author: amartine@if.usp.br
  • §Contact author: kanchan.khemchandani@unifesp.br
  • ∥Contact author: lisheng.geng@buaa.edu.cn
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Phys. Rev. D 114, 074031 – Published 13 October, 2026

DOI: https://doi.org/10.1103/fcyr-wfrd

Abstract

Recent discoveries of exotic hadrons, which cannot be classified within the conventional quark model of qq¯ mesons and qqq baryons, strongly imply the existence of dynamically generated hadronic molecules. Some of these hadron-hadron interactions are accompanied by coupled-channel effects, which remain challenging to quantitatively determine. In this work, we demonstrate that femtoscopy provides a sensitive probe of such coupled-channel dynamics. We calculate correlation functions for the double-strangeness pentaquark candidates Pcss(4493) (JP=1/2−) and Pcss(4633) (JP=1/2− or 3/2−), revealing clear signatures of the attractive interactions that can form bound states. The results are markedly different from those obtained in scenarios that neglect off-diagonal transitions, highlighting the importance of coupled-channel effects for understanding the structure of these hadrons.

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References (74)

  1. ALICE Collaboration, Nature (London) 588, 232 (2020); A. Collaboration et al. (ALICE Collaboration)590, 13(E) (2021).
  2. L. Fabbietti, V. Mantovani Sarti, and O. Vazquez Doce, Annu. Rev. Nucl. Part. Sci. 71, 377 (2021).
  3. N. Brambilla et al., Eur. Phys. J. C 74, 2981 (2014).
  4. A. Belley et al., Phys. Rev. Lett. 132, 182502 (2024).
  5. R. Aliberti et al., Phys. Rep. 1143, 1 (2025).
  6. A. Boccaletti et al., Nature (London) 653, 373 (2026).
  7. E. Oset et al., Int. J. Mod. Phys. E 25, 1630001 (2016).
  8. J.-M. Richard, Few Body Syst. 57, 1185 (2016).
  9. A. Hosaka, T. Hyodo, K. Sudoh, Y. Yamaguchi, and S. Yasui, Prog. Part. Nucl. Phys. 96, 88 (2017).
  10. H.-X. Chen, W. Chen, X. Liu, and S.-L. Zhu, Phys. Rep. 639, 1 (2016).
  11. A. Esposito, A. Pilloni, and A. D. Polosa, Phys. Rep. 668, 1 (2017).
  12. R. F. Lebed, R. E. Mitchell, and E. S. Swanson, Prog. Part. Nucl. Phys. 93, 143 (2017).
  13. F.-K. Guo, C. Hanhart, U.-G. Meißner, Q. Wang, Q. Zhao, and B.-S. Zou, Rev. Mod. Phys. 90, 015004 (2018); 94, 029901(E) (2022).
  14. A. Ali, J. S. Lange, and S. Stone, Prog. Part. Nucl. Phys. 97, 123 (2017).
  15. S. L. Olsen, T. Skwarnicki, and D. Zieminska, Rev. Mod. Phys. 90, 015003 (2018).
  16. M. Karliner, J. L. Rosner, and T. Skwarnicki, Annu. Rev. Nucl. Part. Sci. 68, 17 (2018).
  17. Y.-R. Liu, H.-X. Chen, W. Chen, X. Liu, and S.-L. Zhu, Prog. Part. Nucl. Phys. 107, 237 (2019).
  18. E. van Beveren and G. Rupp, Prog. Part. Nucl. Phys. 117, 103845 (2021).
  19. H.-X. Chen, W. Chen, X. Liu, Y.-R. Liu, and S.-L. Zhu, Rep. Prog. Phys. 86, 026201 (2023).
  20. M. Mai, U.-G. Meißner, and C. Urbach, Phys. Rep. 1001, 1 (2023).
  21. Z.-Y. Bai, D.-Y. Chen, Qi-Huang, X. Liu, S.-Q. Luo, and J.-Z. Wang, Phys. Rept. 1204, 1 (2027).
  22. X.-H. Liu, Q. Wang, and Q. Zhao, Phys. Lett. B 757, 231 (2016).
  23. J.-J. Xie, L.-S. Geng, and E. Oset, Phys. Rev. D 95, 034004 (2017).
  24. F.-K. Guo, X.-H. Liu, and S. Sakai, Prog. Part. Nucl. Phys. 112, 103757 (2020).
  25. G. D. Alexeev et al. (COMPASS Collaboration), Phys. Rev. Lett. 127, 082501 (2021).
  26. M.-Z. Liu, Y.-W. Pan, Z.-W. Liu, T.-W. Wu, J.-X. Lu, and L.-S. Geng, Phys. Rep. 1108, 1 (2025).
  27. S. Weinberg, Phys. Rev. 137, B672 (1965).
  28. X.-L. Ren, B. B. Malabarba, L.-S. Geng, K. P. Khemchandani, and A. Martínez Torres, Phys. Lett. B 785, 112 (2018).
  29. A. Martinez Torres, K. P. Khemchandani, and L.-S. Geng, Phys. Rev. D 99, 076017 (2019).
  30. T. W. Wu, Y. W. Pan, M. Z. Liu, and L. S. Geng, Sci. Bull. 67, 1735 (2022).
  31. Z.-W. Liu, J.-X. Lu, M.-Z. Liu, and L.-S. Geng, Phys. Rev. D 108, L031503 (2023).
  32. Z.-W. Liu, J.-X. Lu, M.-Z. Liu, and L.-S. Geng, Sci. Bull. 70, 3515 (2025).
  33. Z.-W. Liu, J.-M. Xie, J.-X. Lu, and L.-S. Geng, arXiv:2512.10459.
  34. H.-N. Liu, Z.-W. Liu, L. Abreu, and L.-S. Geng, arXiv:2511.19098.
  35. I. Vidana, A. Feijoo, M. Albaladejo, J. Nieves, and E. Oset, Phys. Lett. B 846, 138201 (2023).
  36. L. M. Abreu, P. Gubler, K. P. Khemchandani, A. Martinez Torres, and A. Hosaka, Phys. Lett. B 860, 139175 (2025).
  37. J. A. Oller and U. G. Meissner, Phys. Lett. B 500, 263 (2001).
  38. D. Jido, J. A. Oller, E. Oset, A. Ramos, and U. G. Meissner, Nucl. Phys. A725, 181 (2003).
  39. U.-G. Meißner, Symmetry 12, 981 (2020).
  40. J.-M. Xie, J.-X. Lu, L.-S. Geng, and B.-S. Zou, Phys. Rev. D 108, L111502 (2023).
  41. R. Aaij et al. (LHCb Collaboration), Phys. Rev. Lett. 115, 072001 (2015).
  42. R. Aaij et al. (LHCb Collaboration), Phys. Rev. Lett. 122, 222001 (2019).
  43. R. Aaij et al. (LHCb Collaboration), Phys. Rev. Lett. 128, 062001 (2022).
  44. R. Aaij et al. (LHCb Collaboration), Sci. Bull. 66, 1278 (2021).
  45. R. Aaij et al. (LHCb Collaboration), Phys. Rev. Lett. 131, 031901 (2023).
  46. F.-L. Wang, R. Chen, and X. Liu, Phys. Rev. D 103, 034014 (2021).
  47. J. A. Marsé-Valera, V. K. Magas, and A. Ramos, Phys. Rev. Lett. 130, 091903 (2023).
  48. L. Roca, J. Song, and E. Oset, Phys. Rev. D 109, 094005 (2024).
  49. V. R. Debastiani, J. M. Dias, W. H. Liang, and E. Oset, Phys. Rev. D 97, 094035 (2018).
  50. W.-F. Wang, A. Feijoo, J. Song, and E. Oset, Phys. Rev. D 106, 116004 (2022).
  51. S. Clymton, H.-C. Kim, and T. Mart, Phys. Rev. D 112, 034015 (2025).
  52. S. E. Koonin, Phys. Lett. 70B, 43 (1977).
  53. S. Pratt, T. Csorgo, and J. Zimanyi, Phys. Rev. C 42, 2646 (1990).
  54. Z.-W. Liu, J.-X. Lu, and L.-S. Geng, Phys. Rev. D 107, 074019 (2023).
  55. J.-X. Lin, P. Encarnación, A. Feijoo, and M. Albaladejo, arXiv:2603.18610.
  56. V. Vovchenko and H. Stoecker, Comput. Phys. Commun. 244, 295 (2019).
  57. P. Encarnación, A. Feijoo, V. M. Sarti, and A. Ramos, Phys. Rev. D 111, 114013 (2025); 113, 099901(E) (2026).
  58. Y.-H. Lin and B.-S. Zou, Phys. Rev. D 98, 056013 (2018).
  59. M. P. Valderrama, Phys. Rev. D 98, 054009 (2018).
  60. Y. Huang, M.-Z. Liu, J.-X. Lu, J.-J. Xie, and L.-S. Geng, Phys. Rev. D 98, 076012 (2018).
  61. R. Pavao and E. Oset, Eur. Phys. J. C 78, 857 (2018).
  62. M. V. Polyakov, H.-D. Son, B.-D. Sun, and A. Tandogan, Phys. Lett. B 792, 315 (2019).
  63. Y. Lin, Y.-H. Lin, F. Wang, B. Zou, and B.-S. Zou, Phys. Rev. D 102, 074025 (2020).
  64. N. Ikeno, G. Toledo, and E. Oset, Phys. Rev. D 101, 094016 (2020).
  65. X. Hu and J. Ping, Phys. Rev. D 106, 054028 (2022).
  66. J.-X. Lu, C.-H. Zeng, E. Wang, J.-J. Xie, and L.-S. Geng, Eur. Phys. J. C 80, 361 (2020).
  67. N. Ikeno, W.-H. Liang, G. Toledo, and E. Oset, Phys. Rev. D 106, 034022 (2022).
  68. N. Ikeno, G. Toledo, W.-H. Liang, and E. Oset, Few Body Syst. 64, 55 (2023).
  69. Q.-F. Lü, H. Nagahiro, and A. Hosaka, Phys. Rev. D 107, 014025 (2023).
  70. C.-H. Zeng, J.-X. Lu, E. Wang, J.-J. Xie, and L.-S. Geng, Phys. Rev. D 102, 076009 (2020).
  71. J. Song, W.-H. Liang, C.-W. Xiao, J. M. Dias, and E. Oset, Eur. Phys. J. C 84, 1311 (2024).
  72. Q.-H. Shen, J.-X. Lu, L.-S. Geng, X. Liu, and J.-J. Xie, arXiv:2510.13623.
  73. J.-J. Xie and L.-S. Geng, Chin. Phys. Lett. 41, 081402 (2024).
  74. S.-W. Liu, W.-T. Lyu, and J.-J. Xie, arXiv:2604.25630.

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Phys. Rev. D 114, 074031– Published 13 October, 2026
  • Received 21 July 2026
  • Accepted 24 September 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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