Complete EFT operator bases for dark matter and weakly-interacting light particle

• Published in: The journal of high energy physics Vol. 2024; no. 5; pp. 103 - 84
• Main Authors: Song, Huayang, Sun, Hao, Yu, Jiang-Hao
• Format: Journal Article
• Language: English
• Published: Berlin/Heidelberg Springer Berlin Heidelberg 09.05.2024; Springer Nature B.V; SpringerOpen
• Subjects: Asymmetry; Classical and Quantum Gravitation; Dark matter; Effective Field Theories; Elementary Particles; Fermions; Light; Models for Dark Matter; Neutrinos; New Light Particles; Physics; Physics and Astronomy; Quantum Field Theories; Quantum Field Theory; Quantum Physics; Regular Article - Theoretical Physics; Relativity Theory; Series (mathematics); Standard model (particle physics); String Theory; Symmetry; Tensors; Theoretical physics; Weakly interacting massive particles; Models for Dark Matter; Effective Field Theories; New Light Particles
• ISSN: 1029-8479; 1029-8479
• DOI: 10.1007/JHEP05(2024)103

A bstract The standard model can be extended to include weakly-interacting light particle (WILP): real or complex singlet scalar with a conserved U(1) charge, Majorana or Dirac neutral fermion, neutral or hidden-charged vector boson, etc. Imposing the Z 2 symmetry, these particles can be lifted as the weakly-interacting massive particle (WIMP), the candidate of dark matter. Instead, imposing the shift symmetry on the scalar components gives rise to the axion-like particle, dark photon, etc. Utilizing these light degrees of freedom along with the standard model particles and imposing different symmetries, we construct the complete and independent sets of effective operators up to dimension eight with the Young tensor technique, consistent with counting from the Hilbert series.