Status of the experiment for the search of a dark photon at VEPP–3

Conference · Wed Apr 12 00:00:00 EDT 2017 · EPJ Web Conf.

DOI:https://doi.org/10.1051/epjconf/201714201025· OSTI ID:1360734

Rachek, Igor ^[1]; Nikolenko, Dmitri ^[1]; Wojtsekhowski, Bogdan B. ^[2]

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1. Russian Academy of Sciences (RAS), Novosibirsk (Russian Federation). Budker Inst. of Nuclear Physics (BINP)
2. Thomas Jefferson National Accelerator Facility (TJNAF), Newport News, VA (United States)

The status of the 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 is reported. The search method is based on a missing mass spectra in reaction e⁺e^- → γA'. 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 coupling constant ε² = (0.2 ÷ 1.0) · 10^-7 with a signal-to-noise ratio of two to one at A' mass of 5–20 MeV.

• 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: 1360734
• Report Number(s): JLAB-PHY-17-2434; DOE/OR/23177-4151
• Journal Information: EPJ Web Conf., Vol. 142; Conference: ADMPP16, Messina (Italy), 24-27 Oct 2016
• Country of Publication: United States
• Language: English

Related Subjects

72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS