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  • Letter
  • Open Access

Fermion masses and mixings in string theory with Dirac neutrinos

Mudassar Sabir1,*, Adeel Mansha2,†, Tianjun Li3,4,5,‡, and Zhi-Wei Wang1,§

  • *Contact author: mudassar.sabir@uestc.edu.cn
  • †Contact author: adeelmansha@alumni.itp.ac.cn
  • ‡Contact author: tli@itp.ac.cn
  • §Contact author: zhiwei.wang@uestc.edu.cn
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Phys. Rev. D 111, L071702 – Published 23 April, 2025

DOI: https://doi.org/10.1103/PhysRevD.111.L071702

Abstract

Analyzing the supersymmetric Pati-Salam landscape on a T6/(Z2×Z2) orientifold in IIA string theory, we have found only two models that accurately account for all standard model fermion masses and mixings. The models are dual to each other under the exchange of two SU(2) sectors and feature 12 adjoint scalars, the maximum number allowed in the landscape, whose linear combination yields the two light Higgs eigenstates. Dirac neutrino masses in normal ordering of (50.6,10.6,6.2)±0.1  meV satisfy both the experimental as well as swampland constraints.

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Outline

Information

Phys. Rev. D 111, L071702– Published 23 April, 2025
  • Received 30 July 2024
  • Accepted 25 March 2025
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