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  • Letter
  • Open Access

B¯→D(*)ℓX¯ decays in effective field theory with massive right-handed neutrinos

Alakabha Datta1,*, Hongkai Liu2,†, and Danny Marfatia3,4,‡

  • 1Department of Physics and Astronomy, University of Mississippi, Oxford, Mississippi 38677, USA
  • 2Department of Physics, Technion - Israel Institute of Technology, Haifa 3200003, Israel
  • 3Department of Physics and Astronomy, University of Hawaii at Manoa, Honolulu, Hawaii 96822, USA
  • 4Kavli Institute for Theoretical Physics, University of California, Santa Barbara, California 93106, USA

  • *datta@phy.olemiss.edu
  • †liu.hongkai@campus.technion.ac.il
  • ‡dmarf8@hawaii.edu
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Phys. Rev. D 106, L011702 – Published 28 July, 2022

DOI: https://doi.org/10.1103/PhysRevD.106.L011702

Abstract

We calculate the complete differential decay distributions for the B meson decays, B¯→D(*)ℓX¯, to a massive right-handed (RH) neutrino in the low-energy effective field theory (LEFT) framework. We find that a massive RH neutrino does not introduce any new angular structures compared to the massless case, but can cause significant distortions in angular observables. We study the phenomenology of low-energy four-fermion operators permitted by the standard model effective field theory (SMEFT) extended with RH neutrinos (SMNEFT). We show that to explain the positive value of the difference in forward-backward asymmetries, ΔAFB≡AFBμ−AFBe, tentatively inferred from Belle data, the RH neutrino must be massive. We also make predictions for q2 dependent angular observables to motivate future measurements.

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References (41)

  1. J. P. Lees et al. (BABAR Collaboration), Phys. Rev. Lett. 109, 101802 (2012).
  2. J. P. Lees et al. (BABAR Collaboration), Phys. Rev. D 88, 072012 (2013).
  3. R. Aaij et al. (LHCb Collaboration), Phys. Rev. Lett. 115, 111803 (2015); 115, 159901(E) (2015).
  4. M. Huschle et al. (Belle Collaboration), Phys. Rev. D 92, 072014 (2015).
  5. Y. Sato et al. (Belle Collaboration), Phys. Rev. D 94, 072007 (2016).
  6. S. Hirose et al. (Belle Collaboration), Phys. Rev. Lett. 118, 211801 (2017).
  7. R. Aaij et al. (LHCb Collaboration), Phys. Rev. Lett. 120, 171802 (2018).
  8. S. Hirose et al. (Belle Collaboration), Phys. Rev. D 97, 012004 (2018).
  9. R. Aaij et al. (LHCb Collaboration), Phys. Rev. D 97, 072013 (2018).
  10. A. Abdesselam et al. (Belle Collaboration), arXiv:1904.08794.
  11. Y. S. Amhis et al. (HFLAV Collaboration), Eur. Phys. J. C 81, 226 (2021).
  12. R. Aaij et al. (LHCb Collaboration), Phys. Rev. Lett. 120, 121801 (2018).
  13. R. Watanabe, Phys. Lett. B 776, 5 (2018).
  14. X.-G. He and G. Valencia, Phys. Rev. D 87, 014014 (2013).
  15. G. Cvetič, F. Halzen, C. S. Kim, and S. Oh, Chin. Phys. C 41, 113102 (2017).
  16. P. Asadi, M. R. Buckley, and D. Shih, J. High Energy Phys. 09 (2018) 010.
  17. A. Greljo, D. J. Robinson, B. Shakya, and J. Zupan, J. High Energy Phys. 09 (2018) 169.
  18. K. S. Babu, B. Dutta, and R. N. Mohapatra, J. High Energy Phys. 01 (2019) 168.
  19. R. Mandal, C. Murgui, A. Peñuelas, and A. Pich, J. High Energy Phys. 08 (2020) 022.
  20. B. Abi et al. (Muon g-2 Collaboration), Phys. Rev. Lett. 126, 141801 (2021).
  21. R. Aaij et al. (LHCb Collaboration), Nat. Phys. 18, 277 (2022).
  22. M. Duraisamy and A. Datta, J. High Energy Phys. 09 (2013) 059.
  23. M. Duraisamy, P. Sharma, and A. Datta, Phys. Rev. D 90, 074013 (2014).
  24. B. Bhattacharya, T. Browder, Q. Campagna, A. Datta, S. Dubey, L. Mukherjee, and A. Sibidanov, in 2022 Snowmass Summer Study (2022), arXiv:2203.07189.
  25. E. Waheed et al. (Belle Collaboration), Phys. Rev. D 100, 052007 (2019); 103, 079901(E) (2021).
  26. C. Bobeth, D. van Dyk, M. Bordone, M. Jung, and N. Gubernari, Eur. Phys. J. C 81, 984 (2021).
  27. A. Carvunis, A. Crivellin, D. Guadagnoli, and S. Gangal, Phys. Rev. D 105, L031701 (2022).
  28. B. Grzadkowski, M. Iskrzynski, M. Misiak, and J. Rosiek, J. High Energy Phys. 10 (2010) 085.
  29. B. Henning, X. Lu, and H. Murayama, J. High Energy Phys. 01 (2016) 023.
  30. I. Brivio and M. Trott, Phys. Rep. 793, 1 (2019).
  31. F. del Aguila, S. Bar-Shalom, A. Soni, and J. Wudka, Phys. Lett. B 670, 399 (2009).
  32. A. Aparici, K. Kim, A. Santamaria, and J. Wudka, Phys. Rev. D 80, 013010 (2009).
  33. S. Bhattacharya and J. Wudka, Phys. Rev. D 94, 055022 (2016); 95, 039904(E) (2017).
  34. Y. Liao and X.-D. Ma, Phys. Rev. D 96, 015012 (2017).
  35. I. Bischer and W. Rodejohann, Nucl. Phys. B947, 114746 (2019).
  36. A. Datta, J. Kumar, H. Liu, and D. Marfatia, J. High Energy Phys. 02 (2021) 015.
  37. A. Datta, J. Kumar, H. Liu, and D. Marfatia, J. High Energy Phys. 05 (2021) 037.
  38. Please see Supplemental Material at http://link.aps.org/supplemental/10.1103/PhysRevD.106.L011702 for complete expressions for the angular distributions.
  39. M. Bordone, N. Gubernari, D. van Dyk, and M. Jung, Eur. Phys. J. C 80, 347 (2020).
  40. M. Tanaka and R. Watanabe, Phys. Rev. D 87, 034028 (2013).
  41. S. Iguro and R. Watanabe, J. High Energy Phys. 08 (2020) 006.

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Phys. Rev. D 106, L011702– Published 28 July, 2022
  • Received 8 April 2022
  • Accepted 18 July 2022
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