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25 April 2024

» arxiv » 1503.5687

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On detection of narrow angle e+e- pairs from dark photon decays
A.V. Dermenev ; S.V. Donskov ; S.N. Gninenko ; S.B. Kuleshov ; V.A. Matveev ; V.V. Myalkovskiy ; V.D. Peshekhonov ; V.A. Poliakov ; A.A. Savenkov ; V.O. Tikhomirov ; I.A. Zhukov ;
Date:	19 Mar 2015
Abstract:	A class of models of dark sectors consider new very weak interaction between the ordinary and dark matter transmitted by U’(1) gauge bosons A’ (dark photons) mixing with our photons. If such A’s exist, they could be searched for in a light-shining-through-a-wall experiment with a high energy electron beam from the CERN SPS. The proposed search scheme suggests detection of the e+e- pairs produced in the A’ -> e+e- decay with a very small opening angle. Coordinate chambers based on the thin-wall drift tubes with a minimal material budget and a two-hit resolution for e+ and e- tracks separated by more than 0.5 mm are considered as an option for detecting such pairs.
Source:	arXiv, 1503.5687
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