Decay pion spectroscopy: a new approach

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 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.

arXiv comment29 pages, 15 figures

References in corpus (9)

• Differential Cross Sections for gamma + p --> K+ + Y for Lambda and Sigma0 Hyperons
• Ab initio approach to s-shell hypernuclei 3H_Lambda, 4H_Lambda, 4He_Lambda and 5He_Lambda with a Lambda N-Sigma N interaction
• Observation of Lambda H-4 hyperhydrogen by decay-pion spectroscopy in electron scattering
• Charge symmetry breaking in $\Lambda$ hypernuclei revisited
• Ab-initio calculations of charge symmetry breaking in the A=4 hypernuclei
• Production of excited double hypernuclei via Fermi breakup of excited strange systems
• Analysis of the consistency of kaon photoproduction data with Lambda in the final state
• Production of light hypernuclei with light-ion beams and targets
• High Precision Momentum Calibration of the Magnetic Spectrometers at MAMI for Hypernuclear Binding Energy Determination

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