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26 April 2024

» arxiv » 1412.4717

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The DarkLight Experiment: A Precision Search for New Physics at Low Energies
J. Balewski ; J. Bernauer ; J. Bessuille ; R. Corliss ; R. Cowan ; C. Epstein ; P. Fisher ; D. Hasell ; E. Ihloff ; Y. Kahn ; J. Kelsey ; R. Milner ; S. Steadman ; J. Thaler ; C. Tschalaer ; C. Vidal ; S. Benson ; J. Boyce ; D. Douglas ; P. Evtushenko ; C. Hernandez-Garcia ; C. Keith ; C. Tennant ; S. Zhang ; R. Alarcon ; D. Blyth ; R. Dipert ; L. Ice ; G. Randall ; B. Dongwi ; N. Kalantarians ; M. Kohl ; A. Liyanage ; J. Nazeer ; M. Garcon ; R. Cervantes ; K. Dehmelt ; A. Deshpande ; N. Feege ; B. Surrow ;
Date:	15 Dec 2014
Abstract:	We describe the current status of the DarkLight experiment at Jefferson Laboratory. DarkLight is motivated by the possibility that a dark photon in the mass range 10 to 100 MeV/c$^2$ could couple the dark sector to the Standard Model. DarkLight will precisely measure electron proton scattering using the 100 MeV electron beam of intensity 5 mA at the Jefferson Laboratory energy recovering linac incident on a windowless gas target of molecular hydrogen. The complete final state including scattered electron, recoil proton, and e+e- pair will be detected. A phase-I experiment has been funded and is expected to take data in the next eighteen months. The complete phase-II experiment is under final design and could run within two years after phase-I is completed. The DarkLight experiment drives development of new technology for beam, target, and detector and provides a new means to carry out electron scattering experiments at low momentum transfers.
Source:	arXiv, 1412.4717
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