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Title: APEX: A Prime EXperiment at Jefferson Lab - Test Run Results and Full Run Plans; Update

APEX is an experiment at Thomas Jefferson National Accelerator Facility (JLab) in Virginia, USA, that searches for a new gauge boson (A') with sub-GeV mass and coupling to ordinary matter of g' ~ (10-6 - 10⁻²)e. Electrons impinge upon a fixed target of high-Z material. An A' is produced via a process analogous to photon bremsstrahlung, decaying to an e⁺+e⁻ pair. A test run was held in July of 2010, covering mA' = 175 to 250 MeV and couplings g'/e > 10⁻³. A full run is approved and will cover mA' ~ 65 to 525 MeV and g'/e > 2.3 x 10⁻⁴, and is expected to occur sometime in 2016 or 2017.
Authors:
 [1]
  1. Ohio University, JLAB
Publication Date:
OSTI Identifier:
1184627
Report Number(s):
JLAB-PHY-14-1971; DOE/OR/23177-3385
DOE Contract Number:
AC05-06OR23177
Resource Type:
Conference
Resource Relation:
Journal Name: EPJ Web Conf.; Journal Volume: 96; Conference: Dark Matter, Hadron Physics and Fusion Physics (DHF2014), Messina, Italy, September 24-26, 2014
Research Org:
Thomas Jefferson National Accelerator Facility, Newport News, VA (United States)
Sponsoring Org:
USDOE Office of Science (SC), Nuclear Physics (NP) (SC-26)
Country of Publication:
United States
Language:
English
Subject:
72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS