The Heavy Photon Search Experiment at Jefferson Laboratory

Conference · Mon Apr 01 00:00:00 EDT 2013

OSTI ID:1992124

Uemura, Sho ^[1]

---

1. SLAC National Accelerator Laboratory (SLAC), Menlo Park, CA (United States)

The Heavy Photon Search (HPS) is a new experiment at Jefferson Lab that will search for massive U(1) vector bosons (also known as heavy photons, dark photons, or A?) of mass 20--1000 MeV that couple to electric charge with relative coupling a'/a of 10^-5 -- 10^-10. The HPS experiment is designed to produce heavy photons by electron scattering off a fixed target, and detect them using two decay channels (e+e- or u+u- pairs) and two signatures (invariant mass resonance and displaced decay vertex). The detector is a compact, large-acceptance forward spectrometer comprising a silicon microstrip tracker for momentum measurement and vertexing, an electromagnetic calorimeter for triggering on e+e-, and a muon detector for triggering on u+u-. This talk will cover the motivations for heavy photons and give an overview of the HPS experiment.

• 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: 1992124
• Report Number(s): JLAB-PHY-13-1881; DOE/OR/23177-6781
• Resource Relation: Conference: APS April Meeting 2013, Denver, CO, April 13, 2013
• Country of Publication: United States
• Language: English