CERN Accelerating science

Article
Report number	arXiv:1503.05687
Title	On detection of narrow angle e+e- pairs from dark photon decays
Related title	On detection of narrow angle e+e- pairs from dark photon decays
Author(s)	Dermenev, A.V. (Moscow, INR) ; Donskov, S.V. (Serpukhov, IHEP) ; Gninenko, S.N. (Moscow, INR) ; Kuleshov, S.B. (Santa Maria U., Valparaiso) ; Matveev, V.A. (Moscow, INR ; Dubna, JINR) ; Myalkovskiy, V.V. (Dubna, JINR) ; Peshekhonov, V.D. (Dubna, JINR) ; Poliakov, V.A. (Serpukhov, IHEP) ; Savenkov, A.A. (Dubna, JINR) ; Tikhomirov, V.O. (Lebedev Inst. ; Moscow Phys. Eng. Inst.) ; Zhukov, I.A. (Dubna, JINR)
Publication	2015
Imprint	19 Mar 2015
Number of pages	5
In:	IEEE Trans. Nucl. Sci. 62 (2015) 3283-3287
DOI	10.1109/TNS.2015.2499794
Subject category	hep-ex ; Particle Physics - Experiment ; physics.ins-det ; Detectors and Experimental Techniques
Accelerator/Facility, Experiment	CERN SPS CERN SPS
Test beam	H4
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.
Copyright/License	arXiv nonexclusive-distrib. 1.0

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