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27 April 2024

» arxiv » 1902.3075

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Decay pion spectroscopy: a new approach
A. Margaryan ; R. Ajvazyan ; N. Grigoryan ; V. Kakoyan ; V. Khacatryan ; H. Vardanyan ; S. Zhamkochyan ; P. Achenbach ; J. Pochodzalla ; S.N.Nakamura ; S.Nagao ; Y.Toyama ; J.R.M. Annand ; K. Livingston ; R. Montgomery ;
Date:	8 Feb 2019
Abstract:	We propose a new experiment for decay pion spectroscopy of light hypernuclei at electron- and proton-beam facilities, using the recoil distance technique for separation of produced hypernuclei and a magnetic spectrometer for precise measurement of the decay pion momentum. Low-pressure MWPCs are advocated for low-energy recoil detection as they provide position and time information and are highly insensitive to gamma-ray and electron background. The position and timing characteristics of such a recoil detector were studied using ~5 MeV {alpha}-particles. By using the present proposed approach the rate of the detected hypernuclei can be increased by one-to-two orders of magnitude compared to a recent experiment carried out at the MAMI electron accelerator in Mainz. The possibility of realizing a high luminosity decay pion spectroscopy experiment with proton beams is also discussed.
Source:	arXiv, 1902.3075
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