GlueX: Meson Spectroscopy in Photoproduction

Conference · Sat Mar 01 00:00:00 EST 2014 · Proceedings of Science

OSTI ID:1169313

Salgado, Carlos ^[1]; Smith, Elton S. ^[2]

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1. Norfolk State University, JLAB
2. JLAB

The goal of the GlueX experiment \cite{gluex} is to provide crucial data to help understand the soft gluonic fields responsible for binding quarks in hadrons. Hybrid mesons, and in particular exotic hybrid mesons, provide the ideal laboratory for testing QCD in the confinement regime since these mesons explicitly manifest the gluonic degrees of freedom. Photoproduction is expected to be effective in producing exotic hybrids but there is little data on the photoproduction of light mesons. GlueX will use the new 12-GeV electron beam at Jefferson Lab to produce a 9-GeV beam of linearly polarized photons using the technique of coherent bremsstrahlung. A solenoid-based hermetic detector is under construction, which will be used to collect data on meson production and decays. These data will also be used to study the spectrum of conventional mesons, including the poorly understood excited vector mesons. This talk will give an update on the experiment as well as describe theoretical developments \cite{Dudek:2011bn} to help understand how these data can provide insights into the fundamental theory of strong interactions.

• Research Organization: Thomas Jefferson National Accelerator Facility (TJNAF), Newport News, VA (United States)
• Sponsoring Organization: USDOE Office of Science (SC), Nuclear Physics (NP)
• DOE Contract Number: AC05-06OR23177
• OSTI ID: 1169313
• Report Number(s): JLAB-PHY-14-1861; DOE/OR/23177-3306
• Journal Information: Proceedings of Science, Vol. XLASNPA; Conference: 10th Latin American Symposium on Nuclear Physics and Applications, 1-6 Dec 2013. Montevideo, Uruguay
• Country of Publication: United States
• Language: English