TAILIEUCHUNG - Lepton flavor violation in economical 3-3-1 model with neutrino singlets

Lepton flavor violating (LFV) decays of charged leptons µ → eγ and SM-like Higgs boson h → µτ are discussed in the framework of the economical 3-3-1 model adding three additional singlets neutrinos (E331XR). | Communications in Physics, Vol. 29, No. 1 (2019), pp. 87-96 DOI: LEPTON FLAVOR VIOLATION IN ECONOMICAL 3-3-1 MODEL WITH NEUTRINO SINGLETS LE THO HUE1 DINH PHAN KHOI2 , HOANG HANH PHUONG3 AND HA THANH HUNG3,† 1 Institute of Physics, Vietnam Academy of Science and Technology, 10 Dao Tan, Ba Dinh, Hanoi, Vietnam 2 Department of Physics, Vinh University, 182 Le Duan, Vinh City, Nghe An, Vietnam 3 Department of Physics, Hanoi Pedagogical University 2, Phuc Yen, Vinh Phuc, Vietnam † E-mail: hathanhhung@ Received 15 January 2019 Accepted for publication 06 March 2019 Published 15 March 2019 Abstract. Lepton flavor violating (LFV) decays of charged leptons µ → eγ and SM-like Higgs boson h → µτ are discussed in the framework of the economical 3-3-1 model adding three additional singlets neutrinos (E331XR ). We will show that the appearance of new neutrinos and charged Higgs bosons in this model can result in interesting regions of the parameter space, which satisfy the recent experimental bound of Br(µ → eγ) as well as give large Br(h → µτ) ≥ O(10−7 ). In these regions, the charged Higgs boson mass lies within the range of 2 − 3 TeV. Our results show that the LFV decays are important channels to distinguish the E331XR and the original economical (E331) models, which predict suppressed LFV decay rates. Keywords: electroweak interactions, models beyond the Standard Model, non-standard-model neutrinos, right-handed neutrinos. Classification numbers: , . c 2019 Vietnam Academy of Science and Technology 88 L. T. HUE, D. P. KHOI, H. H. PHUONG AND H. T. HUNG I. INTRODUCTION The economical 331 models [1, 2] are the simpler versions of the model with right-handed neutrino (331RN) [3], where only two Higgs triplets are introduced to generate masses of particles. These E331 models predict new neutrinos with very light masses, result in suppressed LFV processes like µ → eγ and h → µτ, which are now being .

• Vật lý
• Electroweak interactions
• Models beyond the Standard Model
• Non standard model neutrinos
• Right handed neutrinos
• Economical 3 3 1 model
• Ab Initio
• Hamiltonian Approach
• Effective Lagrangian
• Compactified Spaces
• Knot Invariants