Tbilisi State University

output

19942026

most citedObservation of a new particle in the search for the Standard Model Higgs boson with the ATLAS detector at the LHC

10.9k citations

researchers with a paper here

Counting papers with at most 25 authors, so collaboration author lists do not stand in for the people here.

collaborating institutions

Showing 2020 · hep-phShow all

13 papers · 2 filters

hep-ph2020★ 35 cited

Where is the lightest charmed scalar meson?

Meng-Lin Du, Feng-Kun Guo, Christoph Hanhart +2

The lightest charmed scalar meson is known as the $D_{0}^{*} (2300)$ , which is one of the earliest new hadron resonances observed at modern $B$ factories. We show here that the paramete…

hep-ph2020★ 14 cited

Two-Meson Form Factors in Unitarized Chiral Perturbation Theory

Yu-Ji Shi, Chien-Yeah Seng, Feng-Kun Guo +3

We present a comprehensive analysis of form factors for two light pseudoscalar mesons induced by scalar, vector, and tensor quark operators. The theoretical framework is based on a…

hep-ph2020★ 78 cited

Deciphering the mechanism of near-threshold $J / ψ$ photoproduction

Meng-Lin Du, Vadim Baru, Feng-Kun Guo +4

The photoproduction of the $J / ψ$ off the proton is believed to deepen our understanding of various physics issues. On the one hand, it is proposed to provide access to the origin o…

hep-ph2020★ 12 cited

Coherence and mixedness of neutrino oscillations in a magnetic field

P. Kurashvili, L. Chotorlishvili, K. A. Kouzakov +1

The radical departure from classical physics implies quantum coherence, i.e., coherent superposition of eigenstates of Hermitian operators with a discrete spectrum. In resource the…

hep-ph2020★ 11 cited

Strong CP violation in spin-1/2 singly charmed baryons

Y. Ünal, Ulf-G. Meißner

We report on the calculation of the CP-violating form factor $F_{3}$ and the corresponding electric dipole moment for charmed baryons in the spin-1/2 sector generated by the QCD $θ$ -…

hep-ph2020★ 25 cited

$θ$ -dependence of light nuclei and nucleosynthesis

Dean Lee, Ulf-G. Meißner, Keith A. Olive +2

We investigate the impact of the QCD vacuum at nonzero $θ$ on the properties of light nuclei, Big Bang nucleosynthesis, and stellar nucleosynthesis. Our analysis starts with a calc…

hep-ph2020★ 38 cited

Chiral theory of nucleons and pions in the presence of an external gravitational field

H. Alharazin, D. Djukanovic, J. Gegelia +1

We extend the standard second order effective chiral Lagrangian of pions and nucleons by considering the coupling to an external gravitational field. As an application we calculate…

hep-ph2020★ 90 cited

Two-pole structures in QCD: Facts, not fantasy!

Ulf-G. Meißner

The two-pole structure refers to the fact that particular single states in the spectrum as listed in the PDG tables are often two states. The story began with the $Λ (1405)$ , when i…

hep-ph2020★ 32 cited

QCD $θ$ -vacuum energy and axion properties

Zhen-Yan Lu, Meng-Lin Du, Feng-Kun Guo +2

At low energies, the strong interaction is governed by the Goldstone bosons associated with the spontaneous chiral symmetry breaking, which can be systematically described by chira…

hep-ph2020★ 32 cited

On the mass difference between proton and neutron

J. Gasser, H. Leutwyler, A. Rusetsky

The Cottingham formula expresses the electromagnetic part of the mass of a particle in terms of the virtual Compton scattering amplitude. At large photon momenta, this amplitude is…

hep-ph2020★ 6 cited

Meson-baryon scattering in resummed baryon chiral perturbation theory using time-ordered perturbation theory

X. -L. Ren, E. Epelbaum, J. Gegelia +1

Integral equations for meson-baryon scattering amplitudes are obtained by utilizing time-ordered perturbation theory for a manifestly Lorentz-invariant formulation of baryon chiral…

hep-ph2020★ 29 cited

Towards a Heavy Diquark Effective Theory for Weak Decays of Doubly Heavy Baryons

Yu-Ji Shi, Wei Wang, Zhen-Xing Zhao +1

We construct a leading-order effective field theory for both scalar and axial-vector heavy diquarks, and consider its power expansion in the heavy diquark limit. By assuming the tr…