Vector leptoquark contributions to lepton dipole moments

作     者：Arvind Bhaskar Diganta Das Soumyadip Kundu Anirudhan A. Madathil Tanumoy Mandal Subhadip Mitra 

作者机构：Institute of Physics Sachivalaya Marg Bhubaneswar 751 005 India Center for Computational Natural Sciences and Bioinformatics International Institute of Information Technology Hyderabad 00 032 India Indian Institute of Science Education and Research Thiruvananthapuram Vithura Kerala 695 551 India Department of Physics and Astronomy University of Utah Salt Lake City Utah 84112 USA Center for Quantum Science and Technology International Institute of Information Technology Hyderabad 00 032 India 

出 版 物：《Physical Review D》 (Phy. Rev. D)

年 卷 期：2025年第111卷第1期

页      面：015045-015045页

核心收录：

基　　金：IISER-TVM Science and Engineering Research Board, SERB Arthritis National Research Foundation, ANRF, (SRG/2023/001318, IIIT/R&D Office/Seed-Grant/2021-22/013) Arthritis National Research Foundation, ANRF 

摘      要：Leptoquarks (LQs) can contribute to the magnetic and electric dipole moments of charged leptons, which the current experiments have measured with good accuracy. We revisit the parameter spaces of TeV-scale vector LQs that contribute to these observables and study how these models fare against the LHC bounds. We show that significant portions of the parameter space are excluded when the current LHC data is utilized effectively. We find that only U1 and V2 can explain the observed positive shift in (aμexp−aμSM) through a lepton chirality-flipping contribution with O(1) LQ-quark-lepton coupling. We also see how these two LQs can fit the electron dipole moment and atomic parity violation measurements. We find that the current electric dipole moment measurements of the muon cannot restrain the LQ-quark-lepton couplings within perturbative regions.