Results 41 to 50 of about 96,912 (161)

Naturally light Dirac and pseudo-Dirac neutrinos from left-right symmetry

Journal of High Energy Physics, 2022
We develop a class of left-right symmetric theories based on the gauge group SU(3) c × SU(2) L × SU(2) R × U(1) with a generalized seesaw mechanism for generating the charged fermion masses.
K. S. Babu, Xiao-Gang He, Mingxian Su, Anil Thapa   +3 more
doaj   +1 more source

A renormalizable left-right symmetric model with low scale seesaw mechanisms

Nuclear Physics B, 2022
We propose a low scale renormalizable left-right symmetric theory that successfully explains the observed SM fermion mass hierarchy, the tiny values for the light active neutrino masses and is consistent with the lepton and baryon asymmetries of the ...
A.E. Cárcamo Hernández, Ivan Schmidt
doaj   +1 more source

Spectroscopic Evidence of Edge‐Localized States in an Antiferromagnet Topological Insulator NdBi

Advanced Science, EarlyView.
Using spin‐polarized scanning tunneling microscopy (STM) in conjunction with quasiparticle interference, we successfully identify distinct signatures of the ferromagnetic and antiferromagnetic terminations in NdBi, a rare‐earth monopnictide exhibiting non‐trivial topology and magnetism. We demonstrate that step edges on ferromagnetic surfaces host well‐
Avior Almoalem, Rebecca Chan, Brinda Kuthanazhi, Juan Schmidt, Jose A. Moreno, Hermann Suderow, Paul Canfield, Taylor L. Hughes, Vidya Madhavan   +8 more
wiley   +1 more source

Proton decay from quark and lepton compositeness

Journal of High Energy Physics, 2022
Within a chiral SU(15) gauge theory in which the Standard Model fermions are bound states of massless preons, we show that proton-decay operators are likely induced at the compositeness scale, Λpre.
Benoît Assi, Bogdan A. Dobrescu
doaj   +1 more source

Gauge string in the fermion asymmetric matter [PDF]

, 1999
Two new effects of interaction of the gauge string with a homogeneous density of fermions are considered in a gauge model with an anomalous coupling of vector fields with fermions.
A.A. Kozhevnikov, Anderson, Arodź, Bimonte, Förster, Hindmarsh, Kozhevnikov, Kozhevnikov, Linde, Moffatt, Orland, Redlich, Rubakov, Sato, Vachaspati   +14 more
core   +3 more sources

Type‐II Dirac Fermions in Monolayer In2O: Interplay of Magnetotransport, Spin Hall Effect, and Superconductivity

Advanced Science, EarlyView.
First‐principles calculations reveal that monolayer In2O${\rm In}_2{\rm O}$ hosts type‐II Dirac fermions near the Fermi level, which split into Weyl points under spin‐orbit coupling. The material exhibits negative and giant magnetoresistance, a pronounced spin Hall effect, and phonon‐mediated superconductivity at 1.5 K, establishing it as a unique ...
Qing‐Bo Liu, De‐Ming Feng, Wen‐Neng Zhao, Yu‐Yang Zhao, Lun Xiong, Xing‐Yi Tan, Hua‐Hua Fu   +6 more
wiley   +1 more source

Magnetic moments of leptons, charged lepton flavor violations and dark matter phenomenology of a minimal radiative Dirac neutrino mass model

Journal of High Energy Physics, 2022
In a simple extension of the standard model (SM), a pair of vector like lepton doublets (L 1 and L 2) and a SU(2) L scalar doublet (η) have been introduced to help in accommodating the discrepancy in determination of the anomalous magnetic moments of the
Bibhabasu De, Debottam Das, Manimala Mitra, Nirakar Sahoo   +3 more
doaj   +1 more source

Weakly Interacting Stable Pions

, 2010
An unbroken discrete symmetry, analogous to G-parity in QCD, exists in standard model extensions with vector-like coupling of electroweak SU(2) to "hidden sector" fermions that are confined by a strong gauge force. For an irreducible SU(2) representation
Bai, Yang, Hill, Richard J.
core   +1 more source

The Virial Expansion of the Hydrogen Equation of State in Comparison to PIMC Simulations: The Quasiparticle Concept, IPD, and Ionization Degree

Contributions to Plasma Physics, EarlyView.
ABSTRACT The properties of plasmas in the low‐density limit are described by virial expansions. Analytical expressions are known for the lowest virial coefficients from Green's function approaches. Recently, accurate path‐integral Monte Carlo (PIMC) simulations were performed for the hydrogen plasma at low densities by Filinov and Bonitz (Phys. Rev.
Gerd Röpke, Chengliang Lin, W. Ebeling, H. Reinholz   +3 more
wiley   +1 more source

Interplay between vector-like lepton and seesaw mechanism: oblique corrections

Journal of High Energy Physics
The non-vanishing neutrino mass strongly hints the existence of right-handed neutrinos (RHNs), singlets of the standard model (SM). However, they are highly decoupled from the SM and difficult to probe.
Shuyang Han, Zhaofeng Kang, Jiang Zhu
doaj   +1 more source