Decay pion spectroscopy: a new approach

Margaryan, A. et al. (2019) Decay pion spectroscopy: a new approach. Nuclear Instruments and Methods in Physics Research. Section A: Accelerators, Spectrometers, Detectors, and Associated Equipment, 935, pp. 40-50. (doi: 10.1016/j.nima.2019.04.063)

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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 identification 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 α-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.

Item Type:Articles
Status:Published
Refereed:Yes
Glasgow Author(s) Enlighten ID:Livingston, Dr Kenneth and Annand, Dr John and Montgomery, Dr Rachel
Authors: Margaryan, A., Ajvazyan, R., Grigoryan, N., Kakoyan, V., Khachatryan, V., Vardanyan, H., Zhamkochyan, S., Achenbach, P., Pochodzalla, J., Nakamura, S.N., Nagao, S., Toyama, Y., Annand, J.R.M., Livingston, K., and Montgomery, R.
College/School:College of Science and Engineering > School of Physics and Astronomy
Journal Name:Nuclear Instruments and Methods in Physics Research. Section A: Accelerators, Spectrometers, Detectors, and Associated Equipment
Publisher:Elsevier
ISSN:0168-9002
ISSN (Online):1872-9576
Published Online:06 May 2019
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Project CodeAward NoProject NamePrincipal InvestigatorFunder's NameFunder RefLead Dept
170610Glasgow nuclear physics consolidated grantDavid IrelandScience and Technology Facilities Council (STFC)ST/L005719/1P&S - Physics & Astronomy