Meson Spectroscopy: a Perspective from GlueX

Conference · Mon Apr 01 00:00:00 EDT 2019

DOI:https://doi.org/10.2172/1975528· OSTI ID:1975528

Britton, Thomas ^[1]

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1. Thomas Jefferson National Accelerator Facility (TJNAF), Newport News, VA (United States)

In the last 15 years collaborations world-wide have contributed to the discovery of many exotic candidate states, such as those made from two quarks and two antiquarks. With these discoveries there has been renewed interest in spectroscopy and in particular, searches for other such particles. Thomas Jefferson National Accelerator Facility is home to the GlueX experiment which uses a 12 GeV electron beam incident on a diamond radiator to produce a linearly polarized, coherent Bremsstrahlung photon beam. The primary goal of GlueX is to search for so-called exotic hybrid mesons (comprised of a quark, an anti quark, and a gluon) by first mapping out the conventional spectrum of mesons starting with the often poorly understood excited vector mesons. Photoproduction at these energies is relatively unexplored and the use of a polarized beam allows GlueX to discriminate between various production mechanisms which may aid in the identification of exotic hybrid mesons. Successfully commissioned in 2015, GlueX has recently completed data taking for its first phase (GlueX-I) which represents orders of magnitude more statistics than previous photoproduction experiments. In this talk we will present an overview of the spectroscopy being performed at Jefferson Lab with a focus on GlueX.

• 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: 1975528
• Report Number(s): JLAB-PHY-19-3167; DOE/OR/23177-6253
• Resource Relation: Conference: APS April 2019, Denver, Colorado, April 13, 2019
• Country of Publication: United States
• Language: English