9th Workshop of the APS Topical Group on Hadronic Physics

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

Apr 14, 2021, 4:50 PM

20m

Oral Presentation Hadronic Interactions I

Speaker

Taya Chetry (Mississippi State University)

Description

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 $d^∗$ resonance has been seen in other preliminary analyses at CLAS. Partial-wave analysis of pion-deuteron scattering has also shown a resonance at a mass of about 2145 MeV. Preliminary differential cross section measurements of the two charged states of this resonance will be presented.

Presentation materials

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