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 2022 · hep-phShow all

14 papers · 2 filters

hep-ph2022★ 4 cited

Weak radiative decay $Λ_{c}^{+} \to Σ^{+} γ$ using light-cone sum rules

Yu-Ji Shi, Zhi-Peng Xing, Ulf-G. Meißner

We calculate the decay width of the $Λ_{c}^{+} \to Σ^{+} γ$ using light-cone sum rules. For the initial quark radiation an effective Hamiltonian is constructed, where the internal qua…

hep-ph2022★ 14 cited

Local spatial densities for composite spin-3/2 systems

H. Alharazin, B. -D. Sun, E. Epelbaum +2

The definition of local spatial densities by using sharply localized one-particle states is applied to spin-3/2 systems. Matrix elements of the electromagnetic current and the ener…

hep-ph2022★ 12 cited

Dispersion-theoretical analysis of the electromagnetic form factors of the $Λ$ hyperon

Yong-Hui Lin, Hans-Werner Hammer, Ulf-G. Meißner

The electromagnetic form factors of the $Λ$ hyperon in the time-like region are determined precisely through a dispersion-theoretical analysis of the world data for the cross secti…

hep-ph2022★ 14 cited

$P_{cc}^{N}$ states in a unitarized coupled-channel approach

Chao-Wei Shen, Yong-hui Lin, Ulf-G. Meißner

Starting from an effective Lagrangian with heavy quark spin symmetry embedded, the coupled-channel dynamics of the doubly charmed systems $D^{(*)} Σ_{c}^{(*)}$ is investigated. The p…

hep-ph2022★ 1 cited

Electron Mass Singularities in Semileptonic Kaon Decays

Chien-Yeah Seng, William J. Marciano, Ulf-G. Meißner

We show that recent improvements in the $O (α)$ long-distance quantum electrodynamics (QED) corrections to the radiative inclusive $K_{e 3}$ decay rate using the Sirlin representatio…

hep-ph2022

A global QCD analysis of diffractive parton distribution function considering higher twist corrections within the xFitter framework

Maral Salajegheh, Hamzeh Khanpour, Ulf-G Meißner +2

We present {\tt SKMHS22}, a new set of diffractive parton distribution functions (PDFs) and their uncertainties at next-to-leading-order accuracy in perturbative QCD within the {\t…

hep-ph2022★ 11 cited

W-exchange contribution to the decays $Ξ_{cc}^{++} \to Ξ_{c}^{+ (')} π^{+}$ using light-cone sum rules

Yu-Ji Shi, Zhen-Xing Zhao, Ye Xing +1

We calculate the W-exchange contribution to the $Ξ_{cc}^{++} \to Ξ_{c}^{+ (')} π^{+}$ decay using light-cone sum rules. The two-particle light-cone distribution amplitudes of the…

hep-ph2022★ 106 cited

Towards a theory of hadron resonances

Maxim Mai, Ulf-G. Meißner, Carsten Urbach

In this review, we present the current state of the art of our understanding of the spectrum of excited strongly interacting particles and discuss methods that allow for a systemat…

hep-ph2022★ 26 cited

On the definition of electromagnetic local spatial densities for composite spin- $1/2$ systems

J. Yu. Panteleeva, E. Epelbaum, J. Gegelia +1

An unambiguous definition of the electromagnetic spatial densities for a spin-1/2 system is proposed and worked out in the zero average momentum frame and in moving frames. The obt…

hep-ph2022★ 8 cited

The electromagnetic Sigma-to-Lambda transition form factors with coupled-channel effects in the space-like region

Yong-Hui Lin, Hans-Werner Hammer, Ulf-G. Meißner

Using dispersion theory, the electromagnetic Sigma-to-Lambda transition form factors are expressed as the product of the pion electromagnetic form factor and the $Σ Λ ˉ \to π π$ scat…

hep-ph2022★ 20 cited

Resonances in heavy meson - heavy baryon coupled-channel interactions

Zheng-Li Wang, Chao-Wei Shen, Deborah Rönchen +2

The interactions of $D ˉ^{(*)} Λ_{c} - D ˉ^{(*)} Σ_{c}^{(*)}$ are studied within the framework of a dynamical coupled-channel approach. A series of bound states and resonances w…

hep-ph2022★ 7 cited

Prediction of five-flavored pentaquarks

Chao-Wei Shen, Ulf-G. Meißner

We analyze the possibility of the existence of a fully exotic pentaquark state $u d sc b ˉ$ , which is made from the five different flavors participarting in the strong interaction…

hep-ph2022★ 34 cited

Complete theory of radiative corrections to $K_{ℓ 3}$ decays and the $V_{u s}$ update

Chien-Yeah Seng, Daniel Galviz, Mikhail Gorchtein +1

We fill up the missing piece in our own re-analysis of the long-distance electromagnetic radiative corrections to semileptonic kaon decays by performing a rigorous study in the $K\…

hep-ph2022★ 50 cited

On the definition of local spatial densities in hadrons

E. Epelbaum, J. Gegelia, N. Lange +2

We show that the matrix element of a local operator between hadronic states gives rise to an unambiguous definition of the associated spatial density. As an explicit example, we co…

Weak radiative decay Λc+​→Σ+γ using light-cone sum rules