14 research outputs found
and transition form factor revisited
In light of recent experimental results, we revisit the dispersive analysis
of the decay amplitude and of the transition
form factor. Within the framework of the Khuri-Treiman equations, we show that
the Dalitz-plot parameters obtained with a once-subtracted
amplitude are in agreement with the latest experimental determination by
BESIII. Furthermore, we show that at low energies the transition
form factor obtained from our determination of the amplitude
is consistent with the data from MAMI and NA60 experiments
Khuri-Treiman analysis of
We study the decay within the framework of
the Khuri-Treiman equations. We find that the BESIII experimental di-pion mass
distribution in the -region is well reproduced with a
once-subtracted -wave amplitude. Furthermore, we show that -wave
contributions to the amplitude improve the description of the data in the
mass region around 1.5 GeV. We also present predictions for the
transition form factor.Comment: 20 pages, 9 figure
MesonNet 2014 International Workshop. Mini-proceedings
The MesonNet International Workshop was held in the Laboratori Nazionali di Frascati from September the 29th to October the 1st, 2014, being the concluding meeting of the MesonNet research network within EU HadronPhysics3 project. MesonNet is a research network focused on light meson physics gathering experimentalist and theoreticians from Europe and abroad. An overview of the research projects related to the scope of the network is presented in these mini-proceedings
MesonNet 2014 International Workshop. Mini-proceedings
The MesonNet International Workshop was held in the Laboratori Nazionali di
Frascati from September the 29th to October the 1st, 2014, being the concluding
meeting of the MesonNet research network within EU HadronPhysics3 project.
MesonNet is a research network focused on light meson physics gathering
experimentalist and theoreticians from Europe and abroad. An overview of the
research projects related to the scope of the network is presented in these
mini-proceedings.Comment: 93 pages, 12 figures, MesonNet 2014 International Workshop, 29/9 -
1/10 Frascati LNF INF
Strong Interaction Physics at the Luminosity Frontier with 22 GeV Electrons at Jefferson Lab
This document presents the initial scientific case for upgrading the
Continuous Electron Beam Accelerator Facility (CEBAF) at Jefferson Lab (JLab)
to 22 GeV. It is the result of a community effort, incorporating insights from
a series of workshops conducted between March 2022 and April 2023. With a track
record of over 25 years in delivering the world's most intense and precise
multi-GeV electron beams, CEBAF's potential for a higher energy upgrade
presents a unique opportunity for an innovative nuclear physics program, which
seamlessly integrates a rich historical background with a promising future. The
proposed physics program encompass a diverse range of investigations centered
around the nonperturbative dynamics inherent in hadron structure and the
exploration of strongly interacting systems. It builds upon the exceptional
capabilities of CEBAF in high-luminosity operations, the availability of
existing or planned Hall equipment, and recent advancements in accelerator
technology. The proposed program cover various scientific topics, including
Hadron Spectroscopy, Partonic Structure and Spin, Hadronization and Transverse
Momentum, Spatial Structure, Mechanical Properties, Form Factors and Emergent
Hadron Mass, Hadron-Quark Transition, and Nuclear Dynamics at Extreme
Conditions, as well as QCD Confinement and Fundamental Symmetries. Each topic
highlights the key measurements achievable at a 22 GeV CEBAF accelerator.
Furthermore, this document outlines the significant physics outcomes and unique
aspects of these programs that distinguish them from other existing or planned
facilities. In summary, this document provides an exciting rationale for the
energy upgrade of CEBAF to 22 GeV, outlining the transformative scientific
potential that lies within reach, and the remarkable opportunities it offers
for advancing our understanding of hadron physics and related fundamental
phenomena.Comment: Updates to the list of authors; Preprint number changed from theory
to experiment; Updates to sections 4 and 6, including additional figure
and transition form factor revisited
In light of recent experimental results, we revisit the dispersive analysis of the decay amplitude and of the transition form factor. Within the framework of the KhuriâTreiman equations, we show that the Dalitz-plot parameters obtained with a once-subtracted amplitude are in agreement with the latest experimental determination by BESIII. Furthermore, we show that at low energies the transition form factor obtained from our determination of the amplitude is consistent with the data from MAMI and NA60 experiments.In light of recent experimental results, we revisit the dispersive analysis of the decay amplitude and of the transition form factor. Within the framework of the Khuri-Treiman equations, we show that the Dalitz-plot parameters obtained with a once-subtracted amplitude are in agreement with the latest experimental determination by BESIII. Furthermore, we show that at low energies the transition form factor obtained from our determination of the amplitude is consistent with the data from MAMI and NA60 experiments