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Title HEAVY PHOTON DISPLACED VERTEX SEARCH AT2.3GeVWITH PROSPECTS FOR TRUE MUONIUM DISCOVERY
Abstract The Heavy Photon Search (HPS) collaboration at Je¿erson Lab is searching for a new massive U(1) gauge boson known as the A0, or dark photon, in the sub-GeV regime, which arises from considering an additional symmetry in the Standard Model. Though part of a hidden sector, the A0 also kinetically mixes with the photon of electromagnetism, allowing it to have detectable QED decays. The signatures of this new particle in a ¿xed target experiment include a resonance in the e+e- invariant mass spectrum and a displaced vertex of its decay products, which the HPS detector in Hall B at JLab is equipped to detect. HPS is also sensitive to discover True Muonium (TM), an exotic bound state which has never been observed in experiment. In this dissertation, data taken from the 2016 HPS run at 2.3GeV beam energy is analyzed to search for a displaced decay vertex from an A0. The True Muonium yield is also estimated using Monte Carlo simulations, to determine the feasibility for a True Muonium search i
Author(s) Bradley Yale
Publication Date September 2019
Document Type Thesis
Primary Institution The College of William and Mary, Williamsburg, VA
Affiliation Exp Nuclear Physics / Experimental Halls / Hall B
Funding Source Nuclear Physics (NP), Department of Energy grant DE-FG02 88ER40410
Proprietary? No
This publication conveys Technical Science Results
Document Numbers
JLAB Number: JLAB-PHY-19-3079 OSTI Number: 1574119
LANL Number: Other Number: DOE/OR/23177-4816
Associated with an experiment No
Associated with EIC No
Supported by Jefferson Lab LDRD Funding No
Thesis
Thesis Type PhD
Advisor Institution
1. Stepan Stepanyan JLab
Attachments/Datasets/DOI Link
Document(s)
Dataset(s) (none)
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