9th Workshop of the APS Topical Group on Hadronic Physics

Session

Hadronic Interactions I

Apr 14, 2021, 3:30 PM

Conveners

Hadronic Interactions I

• Amy Nicholson (The University of North Carolina at Chapel Hill)

Description

co-host: Astrid Hiller Blin

199. Advances in analyses of three-body decays

Mikhail Mikhasenko (CERN)

4/14/21, 3:30 PM

Oral Presentation

In the talk, I will discuss two main aspects of the amplitude analysis of the three-body final state: angular decomposition, and parametrization of the resonance dynamics. First, I will present an application of the recently proposed method of the Dalitz-Plot Decomposition to the studies of CP violation in the LHCb experiment. Second, I will discuss the realization of the three-body unitarity...

6. Vector-Meson-Nucleon Scattering Lengths from Omega to Upsilon

Igor Strakovsky (The George Washington University)

4/14/21, 3:50 PM

Oral Presentation

The quality of the recent vector-meson photoproduction data from JLab and MAMI at the proximity of the data to the energy threshold gives access to a variety of interesting physics aspects. As an example, an estimation of the vector-meson-nucleon scattering lengths are provided within the vector meson dominance model and projected to the Yp scattering length for EIC. Due to the small size of...

180. Two-nucleon interactions from lattice QCD with a variational method: where are the bound states

Andrew Hanlon (Brookhaven National Laboratory)

4/14/21, 4:10 PM

Oral Presentation

The first calculation of two-nucleon interactions from lattice QCD dates back to over 25 years now. Even with vast increases in computational power and several algorithmic improvements since then, there remains disagreement within the community on the basic parameters that describe these interactions. This is a testament to the difficulty of the problem. Baryons suffer from a serious...

167. The d* dibaryon measured via N-N target rescattering at CLAS

Ken Hicks (Ohio University)

4/14/21, 4:30 PM

Oral Presentation

Using the technique of target rescattering of nucleons off protons, the reactions np -> d pi0 and pp -> d pi+ have been measured using the CLAS detector. For pure resonance productions, these reactions should be related by isospin. The total cross sections, as a function of the center-of-mass energy, W, for both reactions show a peak in the invariant mass of the deuteron and pion at about...

176. Hunting Dibaryons: A study of the $\gamma d \rightarrow \pi^+ \pi^- d$ reaction using CLAS

Taya Chetry (Mississippi State University)

4/14/21, 4:50 PM

Oral Presentation

This study investigates a recently-observed $N\Delta$ ($d^∗$) resonance decaying to $\pi d$ final state using CLAS at Jefferson Lab, Virginia. Tagged photons with beam energies between 0.8 and 3.6 GeV were produced using the bremsstrahlung process incident on a liquid deuterium target. The final state particles detected were an energetic deuteron and a two oppositely charged pions. The $d^∗$...