Presenter

Mahabat Iesa Khanji

Campus

UMass Amherst

Sponsor

Rory Allen Miskimen, Department of Physics, UMass Amherst

Schedule

Session 4, 2:30 PM - 3:15 PM [Schedule by Time][Poster Grid for Time/Location]

Location

Poster Board A87, Campus Center Auditorium, Row 5 (A81-A100) [Poster Location Map]

Abstract

The polarizability of an object measures the extent that an electric field

will induce an electric dipole moment in a system. Strongly interacting

particles, such as the neutral pion, have polarizabilities which are predicted

by fundamental theories, such as quantum chromodynamics. The study

analyzes data from the GlueX Experiment at Jefferson Lab; which, involves

a photon beam (γ) interacting with a liquid hydrogen target (p). This

results in two neutral pions being produced (π0π0), that then decay into

two pairs of photons. The reaction, described as γp → π0π0, is sensitive

to the neutral pion’s polarizability. Jefferson Lab, located in Virginia,

USA, houses a 12 GeV electron beam used in nuclear physics experiments.

GlueX, a large acceptance detector, focuses on measuring exotic particles

to help us understand the structure of hadronic matter. To approach the

challenge of extracting fully exclusive data for the reaction, this research

applies rigorous selection criteria to the GlueX-1 (2017-01) data run. The

analysis code sifts through events by setting parameters such as the incident

photon energy, laboratory angle of the π0π0 system, invariant mass, and the
opening angles of the four produced photons to ensure exclusivity of the
γp → π0π0 events. Further steps will involve investigating how the events
are created, then applying the findings to the neutral pion polarizability
experiment which ran in 2022 at Jefferson Lab.

Keywords

Experimental Nuclear Physics, Data Analysis, Jefferson Lab, GlueX, Photo-reactions

Research Area

Physics and Nanotechnology

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