Gießen 2024 – scientific programme

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HK: Fachverband Physik der Hadronen und Kerne

HK 70: Hadron Structure and Spectroscopy IX

HK 70.5: Talk

Thursday, March 14, 2024, 17:00–17:15, HBR 62: EG 18

A feasibility study for the dark photon search at the BGOOD experiment — •Vlera Hajdini for the BGOOD collaboration — Physikalisches Institut, Universität Bonn

Investigating the potential feeble interaction between particles in the Standard Model (SM) and the Dark Matter (DM) sector is a significant frontier in particle physics. One possible manifestation of this feeble interaction is the dark photon, theorized as a vector gauge mediator that interacts very weakly with SM fermions.

The BGOOD photoproduction experiment combines a central electromagnetic calorimeter with a forward spectrometer for charged particle detection. This configuration enables the complete detection of reaction final states such as π⁰ p, η p, and 2π⁰ p. These are well-suited channels for the study of the mass resolution with regard to the dark photon search. The missing mass of the photons from η and π⁰ decays were used to determine the mass resolution of the detector. Kinematic fitting techniques are also used to enhance the mass resolution, a critical element for accurate particle identification in high-energy experiments.

Keywords: BGOOD; photoproduction; dark photon; mass resolution; kinematic fit