Results 41 to 50 of about 344 (138)

Mass Spectra, Radii, and Decay Widths of Toponium

Advances in High Energy Physics, Volume 2026, Issue 1, 2026.
In this work, the radial Schrodinger equation with a nonrelativistic quark potential model (NRQPM) is solved numerically by employing the shooting method. Calculated numerical wave functions (or solutions) are used to compute the masses, root mean square (RMS) radii, E1, M1 radiative transition widths, annihilation decay widths, and branching ratios of
Nosheen Akbar, Ishrat Asghar, Zaki Ahmad, Adnan Malik   +3 more
wiley   +1 more source

Covariant Spectator Theory of heavy–light and heavy mesons and the predictive power of covariant interaction kernels

Physics Letters B, 2017
The Covariant Spectator Theory (CST) is used to calculate the mass spectrum and vertex functions of heavy–light and heavy mesons in Minkowski space. The covariant kernel contains Lorentz scalar, pseudoscalar, and vector contributions.
Sofia Leitão, Alfred Stadler, M.T. Peña, Elmar P. Biernat   +3 more
doaj   +1 more source

Exploring Dark Photon Production and Kinetic Mixing Constraints in Heavy‐Ion Collisions

Astronomische Nachrichten, Volume 346, Issue 3-4, March-May 2025.
ABSTRACT Vector U‐bosons, often referred to as “dark photons,” are potential candidates for mediating dark matter interactions. In this study, we outline a procedure to derive theoretical constraints on the upper bound of the kinetic mixing parameter ϵ2MU$$ {\upvarepsilon}^2\left({M}_U\right) $$ using dilepton data from heavy‐ion from SIS to RHIC ...
Adrian William Romero Jorge, Elena Bratkovskaya, Taesoo Song, Laura Sagunski   +3 more
wiley   +1 more source

Exploring solutions to the muon g-2 anomaly in a 3-3-1 model under flavor constraints

European Physical Journal C: Particles and Fields
The magnetic moment of the muon can receive significant two-loop contributions from a light pseudoscalar. Notably, the spectrum of scalars of 3-3-1 models includes one pseudoscalar.
A. Doff, João Paulo Pinheiro, C. A. de S. Pires   +2 more
doaj   +1 more source

Study of Semileptonic B⟶DPℓ+νℓ Decays Based on the SU(3) Flavor Symmetry

Advances in High Energy Physics, Volume 2025, Issue 1, 2025.
Decays B⟶DPℓ+νℓ(ℓ = e, μ, τ) with the nonresonance, the charmed vector resonances, the charmed scalar resonances, and the charmed tensor resonances are explored by using the SU(3) flavor symmetry approach. Firstly, the decay amplitudes of different modes are related by the SU(3) flavor symmetry.
Ru-Min Wang, Yi-Jie Zhang, Meng-Yuan Wan, Xiao-Dong Cheng, Yuan-Guo Xu, Subhash Singha   +5 more
wiley   +1 more source

Next-to-leading order corrections to deeply virtual production of pseudoscalar mesons

Physics Letters B, 2017
We complete the perturbative next-to-leading order corrections to the hard scattering amplitudes of deeply virtual meson leptoproduction processes at leading twist-two level by presenting the results for the production of flavor singlet pseudoscalar ...
G. Duplančić, D. Müller, K. Passek-Kumerički   +2 more
doaj   +1 more source

Tensor Condensate Accompanied by Chiral Transition in a Strong Magnetic Field

Advances in High Energy Physics, Volume 2025, Issue 1, 2025.
We investigate tensor condensates and chiral condensates in the (2 + 1)‐flavor Nambu–Jona–Lasinio model at finite temperature and density in the presence of a strong magnetic field. The emergence of the tensor condensate is attributed to the four‐fermion interaction.
Yuan-Hao Niu, Xin-Jian Wen, Subhash Singha   +2 more
wiley   +1 more source

Exact formula of the spectrum of the pseudoscalar octet

Physics Letters B, 2015
Non-perturbative proof is presented of a generalized version of Goldstone theorem, where the Lagrangian conserves an approximate SU(3) chiral symmetry, that both quark masses and electromagnetism make contributions to the masses of spinless particles of ...
R. Ling, B.L. Li, J.L. Ping
doaj   +1 more source

Semileptonic decay of Ds+→π0ℓ+νℓ via neutral meson mixing

Physics Letters B, 2020
Based on the mechanism of neutral meson mixing, we predict the branching fraction of the semileptonic decay of Ds+→π0ℓ+νℓ (ℓ=e, μ) using recently measured branching fraction of Ds+→ηe+νe by BESIII experiment.
Hai-Bo Li, Mao-Zhi Yang
doaj   +1 more source

Millimeter‐Wave WISP Search with Coherent Light‐Shining‐Through‐a‐Wall Toward the STAX Project

Annalen der Physik, Volume 536, Issue 1, January 2024.
This research article shows potential of millimeter waves for searching dark photons, one of the candidates of dark matter. By sharing a common reference signal, an excellent temporal coherency is achieved between production and detection of dark photons.
Akira Miyazaki, Tor Lofnes, Fritz Caspers, Paolo Spagnolo, John Jelonnek, Tobias Ruess, Johannes L. Steinmann, Manfred Thumm   +7 more
wiley   +1 more source