Results 71 to 80 of about 13,280 (208)

Unquenching weak substructure

open access: yes, 2015
On assuming that Weak substructure has a dynamics which is similar to quantum chromodynamics but much stronger, we conclude that unquenching is indispensable for predictions on the spectrum of Weak-substructure resonances.Comment: Presented at Workshop ...
Coito, Susana   +2 more
core   +1 more source

Light hadron spectroscopy at BESIII [PDF]

open access: yesEPJ Web of Conferences, 2016
Light hadron spectroscopy is one of the most important physics goals of high statistics of charmonium decays collected at BESIII which provide an excellent place for hunting gluonic excitations and studying strangeonium. In this proceeding, we will introduce two analyses for gluonic states study on η(1405)/η(1475) puzzle, X(1835) and exotic states and ...
openaire   +5 more sources

Three-particle formalism for multiple channels: the ηππ + K K ¯ π $$ K\overline{K}\pi $$ system in isosymmetric QCD

open access: yesJournal of High Energy Physics
We generalize previous three-particle finite-volume formalisms to allow for multiple three-particle channels. For definiteness, we focus on the two-channel ηππ and K K ¯ π $$ K\overline{K}\pi $$ system in isosymmetric QCD, considering the positive G ...
Zachary T. Draper, Stephen R. Sharpe
doaj   +1 more source

The Meson Spectroscopy Program Using the Forward Tagger with CLAS12 at Jefferson Lab

open access: yesEPJ Web of Conferences, 2014
The 12 GeV upgrade to the Continuous Electron Beam Accelerator Facility (CEBAF) will enable a new generation of experiments in hadronic nuclear physics at Jefferson Lab, seeking to address fundamental questions in QCD.
Fegan Stuart
doaj   +1 more source

Exotic candidates with heavy quark(s)

open access: yes, 2017
In the last decades, the number of exotic candidates which are beyond the conventional quark model has grown dramatically. At the same time, numerous theoretical interpretations, such as tetraquark, hybrid, hadroquarkonium and hadronic molecule, have ...
Wang, Qian
core   +1 more source

Higher partial wave contamination in finite-volume 1-to-2 transitions

open access: yesJournal of High Energy Physics
In their seminal work, Lellouch and Lüscher derived a conversion factor relating a finite-volume matrix element, calculable using numerical lattice QCD, with the infinite-volume decay amplitude for K → ππ.
M. T. Hansen, T. Peterken
doaj   +1 more source

New Physics at the International Facility for Antiproton and Ion Research (FAIR) Next to GSI

open access: yes, 2007
The project of the international Facility for Antiproton and Ion Research (FAIR), co-located to the GSI facility in Darmstadt, has been officially started on November 7, 2007.
Augustin, I.   +4 more
core   +1 more source

Lüscher equation with long-range forces

open access: yesJournal of High Energy Physics
We derive the modified Lüscher equation in the presence of the long-range force caused by the exchange of a light particle. It is shown that the use of this equation enables one to circumvent the problems related to the strong partial-wave mixing and the
Rishabh Bubna   +5 more
doaj   +1 more source

Spectrum of large N glueballs: holography vs lattice

open access: yesJournal of High Energy Physics, 2022
Recently there has been a notable progress in the study of glueball states in lattice gauge theories, in particular extrapolating their spectrum to the limit of large number of colors N.
Anatoly Dymarsky, Dmitry Melnikov
doaj   +1 more source

Hadronic decay of vector charmonium from the lattice

open access: yesJournal of High Energy Physics
Estimating decay parameters in lattice simulations is a computationally demanding problem, requiring several volumes and momenta. We explore an alternative approach, where the transition amplitude can be extracted from the spectral decomposition of ...
Benoît Blossier   +3 more
doaj   +1 more source

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