# 8th Workshop of the APS Topical Group on Hadronic Physics

10-12 April 2019
Denver, CO
US/Mountain timezone
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# JPAC

## Place

Location: Denver, CO
Address: Sheraton Denver Downtown Hotel, 1550 Court Pl. lobby level of the Plaza building
Date: 12 Apr 08:30 - 12:00

## Conveners

• I
• Prof. Briscoe, Bill (GWU)
• II
• Prof. Szczepaniak, Adam (Indiana Univeristy/JLab)

## Timetable | Contribution List

Displaying 7 contributions out of 7
Type: invited talk Session: JPAC
In this talk we will present the formalism of Khuri-Treiman equations and how this is useful for the analysis of three body decays. We will show how it works in different reactions, and discuss some of the necessary generalizations, such as the inclusion of coupled channels. We will also discuss future applications.
Presented by Dr. Miguel ALBALADEJO on 12/4/2019 at 17:00
Type: invited talk Session: JPAC
The Khuri-Treiman (KT) formalism has been used to great effect to describe the low-energy dynamics involved in relativistic three body decays. This dispersive framework relies on truncating the infinite sum of partial waves via the isobar decomposition and imposing unitarity on the three resulting subchannels. Because of this truncation, however, the dispersion equations resulting from unitarity a ... More
Presented by Mr. Daniel WINNEY on 12/4/2019 at 17:30
Type: invited talk Session: JPAC
I will discuss the history of JPAC, its mission and contributionx to amplitude analysis and hadron spectroscopy.
Presented by Prof. Adam SZCZEPANIAK on 12/4/2019 at 14:30
Type: invited talk Session: JPAC
In this talk I will review the recent analyses and other activities carried out by the JPAC collaboration. In particular, the phenomenological analysis of the $\eta^{(')} \pi$ partial waves measured at COMPASS. We fit the data using a coupled-channel amplitude based on first principles, determining in a robust way the existence of only one hybrid meson candidate $\pi_1$, corresponding to the $\pi ... More Presented by Mr. Arkaitz RODAS on 12/4/2019 at 16:30 Type: invited talk Session: JPAC I'll review the recent developments in single and double meson photoproduction, including photoproduction of 1 and 2 pseudoscalar(s), and one vector meson. Presented by Dr. Vincent MATHIEU on 12/4/2019 at 14:55 Type: invited talk Session: JPAC The CLAS experiments have achieved major advances in the study of the$N^*$region of the electroproduction spectrum. Data on electrocouplings of the many baryon resonances in the mass range up to 1.8 GeV showed consistency between the$N\pi$,$N\eta$and$N\pi^+\pi^-\$ channels. We present our theoretical studies of structure functions in view of the CLAS12 experiments planned in the near futur ... More
Presented by Dr. Astrid HILLER BLIN on 12/4/2019 at 15:45
Type: invited talk Session: JPAC
Advances in Lattice QCD computations of the excited hadron spectrum require analytic representation of infinite volume three particle scattering amplitudes. We present a representation of the elastic three particle scattering amplitude consistent with the unitarity of the S-matrix. We investigate aspects of its analytic properties, specifically one-particle exchange effects and triangle singularit ... More
Presented by Mr. Andrew JACKURA on 12/4/2019 at 15:20
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