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This content will become publicly available on February 19, 2019

Title: Searching for a dark photon: project of the experiment at VEPP-3

In this paper, we propose an experiment to search for a new gauge boson A' in $e^+e^-$ annihilation by means of a positron beam incident on a gas hydrogen target internal to the bypass at the VEPP-3 storage ring. The search method is based on a missing mass spectra in the reaction $$e^+e^-\rightarrow \gamma$$ A'. It allows observation of the A' signal independently of its decay modes and life time. The projected result of this experiment corresponds to an upper limit on the square of the coupling constant $$\varepsilon^2=3\cdot 10^{-8}$$ with a signal-to-noise ratio of two to one at an A' mass of 5-20 MeV.
Authors:
 [1] ;  [2] ;  [2] ;  [3] ;  [2] ;  [2] ;  [2] ;  [4] ;  [4] ;  [4] ;  [5] ;  [6] ;  [6] ;  [6] ;  [6] ;  [7] ;  [7] ;  [7] ;  [7] ;  [7]
  1. Thomas Jefferson National Accelerator Facility (TJNAF), Newport News, VA (United States)
  2. Budker Institute of Nuclear Physics, Novosibirsk (Russia)
  3. Budker Institute of Nuclear Physics, Novosibirsk (Russia); Novosibirsk State Technical University (Russia)
  4. Budker Institute of Nuclear Physics, Novosibirsk (Russia); Novosibirsk State University (Russia)
  5. Cornell Univ., Ithaca, NY (United States). Department of Physics
  6. National Institute of Nuclear Physics, Section of Genova (Italy)
  7. National Institute of Nuclear Physics, Section of Catania (Italy)
Publication Date:
Report Number(s):
JLAB-PHY-17-2550; DOE/OR/23177-4208; arXiv:1708.07901
Journal ID: ISSN 1748-0221
Grant/Contract Number:
AC05-06OR23177
Type:
Accepted Manuscript
Journal Name:
Journal of Instrumentation
Additional Journal Information:
Journal Volume: 13; Journal Issue: 02; Journal ID: ISSN 1748-0221
Publisher:
Institute of Physics (IOP)
Research Org:
Thomas Jefferson National Accelerator Facility (TJNAF), 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:
71 CLASSICAL AND QUANTUM MECHANICS, GENERAL PHYSICS; 47 OTHER INSTRUMENTATION
OSTI Identifier:
1424946