Results 51 to 60 of about 208,309 (159)

Decays τ → ππηντ and τ → πηηντ in the extended Nambu–Jona-Lasinio model

Natural Science Review
In the framework of the extended Nambu–Jona-Lasinio model, the processes τ → ππη(η′)ντ and τ → πηη(η′)ντ are considered taking into account mesons in the ground and first radially excited intermediate states. It is shown that in the processes τ → ππη(η′)
M. K. Volkov, A. A. Pivovarov, K. Nurlan
doaj   +1 more source

Flavor decomposition of the pion-nucleon σ-term

Journal of High Energy Physics, 2019
We re-analyze the flavor decomposition of the pion-nucleon σ-term in the framework of baryon chiral perturbation to fourth order. We employ a covariant and the heavy baryon framework including also the low-lying decuplet.
Daniel Severt, Ulf-G. Meißner, Jambul Gegelia   +2 more
doaj   +1 more source

Quantum GraviElectro Dynamics

Annalen der Physik, Volume 538, Issue 1, January 2026.
The BRST invariant Lagrangian of the gravitationally interacting U(1)$U(1)$ gauge theory, namely the Quantum GraviElectro Dynamics (QGED). The Yan–Mills theory with the Hilbert–Einstein gravitational Lagrangian, namely the Yang–Mills–Utiyama (YMU) theory, is defined and quantised using the standard procedure. The theory is perturbatively renormalisable,
Yoshimasa Kurihara
wiley   +1 more source

Strong WW scattering chiral lagrangians, unitarity and resonances [PDF]

, 1996
Chiral lagrangians provide a model independent description of the strongly interacting symmetry breaking sector. In this work, first we review the LHC sensitivity to the chiral parameters (in the hardest case of non-resonant low-energy WW scattering ...
Pelaez, J.R., Pelaez, J.
core  

Dynamical axions and gravitational waves

Journal of High Energy Physics, 2019
In this paper we explore the possibility of observable gravitational waves as a manifestation of the QCD axion dynamics. In particular, we focus on dynamical axion models which solve the strong CP problem, and include the confinement of a QCD-like gauge ...
Djuna Croon, Rachel Houtz, Verónica Sanz   +2 more
doaj   +1 more source

Neutrino Magnetic Moment in the Doublet‐Singlet Leptoquark Model

Advances in High Energy Physics, Volume 2026, Issue 1, 2026.
The transition magnetic moment for Majorana neutrinos is studied in a simple extension of the Standard Model. This extension incorporates two scalar Leptoquarks S1 and R~2 with quantum numbers 3¯,113,/ and (3, 2, 1/6), respectively. It is found that these Leptoquarks generate a sizable transition magnetic moment, particularly when the quark bottom is ...
R. Sánchez-Vélez, Theocharis Kosmas
wiley   +1 more source

PI-PI-SCATTERING AND CHIRAL LAGRANGIANS

, 1988
Published version is located at http://prd.aps.org/abstract/PRD/v38/i7/p2195_1We analyze results on π-π scattering using a framework based on nonlinear chiral Lagrangians both at the tree level and at one-loop order.
RAMIREZ, C, VALENCIA, G, Donoghue, JF
core   +2 more sources

Topological Quasiparticles of Light: From Spin‐Orbit Coupling to Photonic Skyrmions

Laser &Photonics Reviews, Volume 19, Issue 24, December 17, 2025.
This review summarizes recent advances in photonic skyrmions, emphasizing the central role of spin–orbit coupling in their formation. The review discusses how spin–orbit interactions generate skyrmionic textures, examines modulation strategies for their dynamic control, and provides an overview of emerging directions and opportunities where these ...
Xinrui Lei, Qiwen Zhan
wiley   +1 more source

Magnetic Hopfions as Local Rotations of the Uniform Magnetization Background

physica status solidi (RRL) – Rapid Research Letters, Volume 19, Issue 12, December 2025.
The Hopf mapping of 3D coordinate space to the unit sphere m2 = 1 in the magnetization space m(r) can be parametrized by some angles. These angles are used to define a local rotation matrix to restore the hopfion magnetization configuration from the uniformly magnetized state for any Hopf indices.
Konstantin Y. Guslienko
wiley   +1 more source

Insights into Graphene Nanostructures, Fabrication Techniques, Mechanical, and Functional Behavior Characterization

Small Science, Volume 5, Issue 12, December 2025.
This review comprehensively explores the structural configurations, properties, and applications of graphene variants—including monolayer, multilayer, and functionalized forms (graphene oxide, rGO, composites). It discusses fabrication techniques (mechanical exfoliation, chemical vapor deposition, epitaxy) and advanced mechanical characterization ...
Ashfaqul Hoque Khadem, Camili Brignoni Diaz, Lihua Lou   +2 more
wiley   +1 more source