Results 131 to 140 of about 9,941 (223)

Electromagnetic corrections to pseudoscalar decay constants

, 2011
The effects of electromagnetic interactions on pseudoscalar decay constants are investigated. Us-ing a compact QED and QCD action we are able to resolve differences of about 0.1 MeV. We ob-tain the preliminary results fpi0 − fpi ± = 0.09(3) MeV and fD0 −
Benjamin Gläßle, Gunnar S. Bali
core  

Pseudoscalar Higgs plus jet production at Next-to-Next-to-Leading Order in QCD

Journal of High Energy Physics
We present a calculation of pseudoscalar Higgs production in association with a jet at Next-to-Next-to Leading Order (NNLO) accuracy in QCD. We work in an effective field theory in which m t → ∞ resulting in effective operators which couple the ...
Youngjin Kim, Ciaran Williams
doaj   +1 more source

On the precision of a data-driven estimate of the pseudoscalar-pole contribution to hadronic light-by-light scattering in the muon g−2

EPJ Web of Conferences, 2016
The evaluation of the numerically dominant pseudoscalar-pole contribution to hadronic light-bylight scattering in the muon g − 2 involves the pseudoscalar-photon transition form factor FPγ*γ*(−Q12−Q22) with P = π0, η, η′ and, in general, two off-shell ...
Nyffeler Andreas
doaj   +1 more source

Synthetic complex Weyl superconductors, chiral Josephson effect and synthetic half-vortices. [PDF]

Sci Rep, 2023
Faraei Z, Jafari SA.
europepmc   +1 more source

Studies of Light Pseudoscalar Mesons at BESIII

, 2014
Studies of light pseudoscalar mesons are an important aspect of the physics program pursued at BESIII. In this presentation recent results from η and η′ decays and the current status of the γγ physics program will be ...
C. F Redmer, Redmer C. F
core   +1 more source

Masses of purely top-quark bound states: toponium and the triply-top baryon

European Physical Journal C: Particles and Fields
We investigate the pseudoscalar ( $$\eta _t$$ η t ) and vector ( $$\psi _t$$ ψ t ) toponium states, as well as the triply-top baryon ( $$\Omega _{ttt}$$ Ω ttt ), using the QCD sum-rule method.
Z. Rajabi Najjar, K. Azizi
doaj   +1 more source

Pseudoscalar charge density

, 1969
It is shown that a true pseudoscalar charge density—a ψ*ψ which has opposite signs in two regions—can exist. This fact is accomplished by allowing a parity transformation, for which p*p = −1, and by making the operation of hermitian adjoint differ by a ...
Charles A. Coombes
core   +1 more source

Exact solution of the 1D Dirac equation for a pseudoscalar interaction potential with the inverse-square-root variation law. [PDF]

Sci Rep, 2023
Ishkhanyan AM, Krainov VP.
europepmc   +1 more source

Universal Properties of Pseudoscalar Mediators [PDF]

, 2017
We discuss universal signals of consistent models of pseudoscalar mediators for collider searches for Dark Matter. Keeping only the degrees of freedom that can not be decoupled due to consistency conditions, we present a universality class of simplified ...
Tenorth, V., Klassen, M., Bauer m, M.
core  

Thin layer axion dynamo

European Physical Journal C: Particles and Fields
We study interacting classical magnetic and pseudoscalar fields in frames of the axion electrodynamics. A large scale pseudoscalar field can be the coherent superposition of axions or axion like particles. We consider the evolution of these fields inside
Maxim Dvornikov
doaj   +1 more source