75 citations · 522 across the 43 of their papers we have counts for
44 papers
Taming lepton portal dark matter by a non-invertible selection rule
Junichiro Kawamura
We point out that a non-invertible selection rule can control the flavor violation inherent in lepton portal dark matter, a weakly interacting massive particle candidate that can e…
Finite modular Coleman-Weinberg inflation
Yoshihiko Abe, Komei Goto, Tetsutaro Higaki +2
We propose a modular symmetric inflationary model based on a Coleman--Weinberg potential generated by integrating out heavy vector-like quarks that couple to the complex modulus fi…
Chiral enhancement in the vector-like fourth family: Case of
Junichiro Kawamura, Yuji Omura
We demonstrate that a vector-like fourth family of quarks induces a genuine chiral enhancement in , which is absent in the Standard Model (SM). The coexistence of doublet…
Large and small hierarchies from finite modular symmetries
Tetsutaro Higaki, Junichiro Kawamura, Tatsuo Kobayashi +2
We study the moduli stabilization by the radiative corrections due to the moduli dependent vector-like masses invariant under the finite modular symmetry. The radiative stabilizati…
Moduli stabilization and light axion by Siegel modular forms
Shuta Funakoshi, Junichiro Kawamura, Tatsuo Kobayashi +2
We discuss the stabilization of multiple moduli by utilizing Siegel modular forms in the framework of modular invariant theories. We derive the stationary condi…
Finite modular majoron
Tae Hyun Jung, Junichiro Kawamura
We point out that the accidental symmetry can arise from a finite modular symmetry in the type-I seesaw. The finite modular symmetry is spontaneously broken in s…
Finite modular axion and radiative moduli stabilization
Tetsutaro Higaki, Junichiro Kawamura, Tatsuo Kobayashi
We propose a simple setup which can stabilize a modulus field of the finite modular symmetry by the Coleman-Weinberg potential. Our scenario leads to a large hierarchy suppressing…
Taking aim at the wino-higgsino plane with the LHC
Linda M. Carpenter, Humberto Gilmer, Junichiro Kawamura +1
In this work we explore multiple search strategies for higgsinos and mixed higgsino-wino states in the MSSM and project the results onto the plane. Assuming associated pr…
Current status on pair-produced muon-philic vectorlike leptons in multilepton channels at the LHC
Junichiro Kawamura, Seodong Shin
In this work, we obtain the current limits on the pair production of vectorlike leptons decaying to a Standard Model gauge boson and a lepton in the second generation using the Run…
Semi-visible dark photon in a model with vector-like leptons for the and -boson mass anomalies
Waleed Abdallah, Mustafa Ashry, Junichiro Kawamura +1
We propose a model realizes that a semi-visible dark photon which can contribute to the anomalous magnetic moment () of both electron and muon. In this model, the electron $g-…
Fermion Hierarchies in Grand Unification from Modular Flavor Symmetry
Yoshihiko Abe, Tetsutaro Higaki, Junichiro Kawamura +1
We construct a model in which the hierarchies of the quark and lepton masses and mixing are explained by the modular flavor symmetry. The hierarchies are realized by t…
Neutrinos in Global SU(5) F-theory Model
Stuart Raby, Junichiro Kawamura
In this talk, given at Corfu 2022 Workshop on the Standard Model and Beyond, I present work in collaboration with Junichiro Kawamura,Ref.~[arXiv:2212.00840]. The talk is also based…
Quark and lepton hierarchies from modular flavor symmetry
Yoshihiko Abe, Tetsutaro Higaki, Junichiro Kawamura +1
We propose models in which the hierarchical structures of the masses and mixing in both quark and lepton sectors are explained by the modular flavor symmetry near the…
Quark masses and CKM hierarchies from modular flavor symmetry
Yoshihiko Abe, Tetsutaro Higaki, Junichiro Kawamura +1
We propose models to explain the hierarchies of the quark masses and mixing by utilizing the modular flavor symmetry. The hierarchy is realized by the modulus stab…
A Right-handed Neutrino Portal to the Hidden sector : Active Neutrinos and their Twins in an F-theory model
Junichiro Kawamura, Stuart Raby
We analyze the neutrino phenomenology in an F-theory model with both a visible sector and a twin hidden sector. At low energies, the strong and weak scales of the two secto…
Report of the Topical Group on Physics Beyond the Standard Model at Energy Frontier for Snowmass 2021
Tulika Bose, Antonio Boveia, Caterina Doglioni +318
This is the Snowmass2021 Energy Frontier (EF) Beyond the Standard Model (BSM) report. It combines the EF topical group reports of EF08 (Model-specific explorations), EF09 (More gen…
Leptonic cascade decays of a heavy Higgs boson through vectorlike leptons at the LHC
Radovan Dermisek, Junichiro Kawamura, Enrico Lunghi +2
We demonstrate the potential of fully leptonic cascade decays of a heavy neutral Higgs boson through vectorlike leptons as a simultaneous probe for extended Higgs sectors and extra…
Combined signatures of heavy Higgses and vectorlike fermions at the HL-LHC
Radovan Dermisek, Junichiro Kawamura, Enrico Lunghi +2
In extensions of two Higgs doublet models with vectorlike quarks and leptons the decays of new scalars or fermions can be altered by the presence of the other, depending on the hie…
Complete vectorlike fourth family and new U(1) for muon anomalies
Junichiro Kawamura
I introduce a model to explain the recent anomalies in the muon anomalous magnetic moment and the rare semi-leptonic meson decays. The Standard Model is extended by a $U(1)^\pr…
Importance of vector leptoquark-scalar box diagrams in Pati-Salam unification with vector-like families
Syuhei Iguro, Junichiro Kawamura, Shohei Okawa +1
We study lepton flavor violating meson decays induced by box diagrams involving a vector leptoquark (LQ) and scalar fields in Pati-Salam (PS) unification with vector-like families.…
Exploring nearly degenerate higgsinos using mono- signal
Linda M. Carpenter, Humberto Gilmer, Junichiro Kawamura
We propose a new search strategy for higgsinos. Assuming associated production of higgsino-like pairs with a or boson, we search in the missing energy plus hadronically-tag…
Lepto-axiogenesis in minimal SUSY KSVZ model
Junichiro Kawamura, Stuart Raby
We study the lepto-axiogenesis scenario in the minimal supersymmetric KSVZ axion model. Only one Peccei-Quinn (PQ) field and vector-like fields are introduced besides the MSSM with…
Mixed modulus and anomaly mediation in light of the muon anomaly
Kwang Sik Jeong, Junichiro Kawamura, Chan Beom Park
The new measurement of the anomalous magnetic moment of muon at the Fermilab Muon experiment has strengthened the significance of the discrepancy between the standard model p…
signal from a vector-like lepton decaying to a muon-philic boson at the LHC
Junichiro Kawamura, Stuart Raby
We propose a novel possibility to detect a very distinctive signal with more than four muons originating from pair-produced vector-like leptons decaying to a muon-philic …