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Bonn 2020 – wissenschaftliches Programm

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HK: Fachverband Physik der Hadronen und Kerne

HK 52: Poster (b)

HK 52.1: Poster

Donnerstag, 2. April 2020, 16:30–18:30, Grotte

Improving the precision of the hypertriton binding energy by pion spectroscopy — •Pascal Klag1, Patrick Achenbach1, Philipp Eckert1, Toshiyuki Gogami2, Philipp Herrmann1, Masashi Kaneta3, Sho Nagao3, Satoshi Nakamura3, Josef Pochodzalla1, and Yuichi Toyama31Johannes Gutenberg-Universität Mainz — 2Kyoto University, Kyoto — 3Tohoku University, Sendai

A precise binding energy measurement of hypertriton Λ3H is planned for the near future at MAMI. Currently the precision is limited by the absolute momentum calibration of the decay-pion spectrometers. Presently this limitation is caused by the uncertainty of the absolute beam energy of δ Ebeam = 160 keV. For the hypertriton experiment two independent high precision beam energy measurements are under development. For one method a dipole of the beam-line leading to the spectrometer facility is used as a high-accuracy beam spectrometer. It is based on an acurate field map and precise monitoring of the beam trajectory. Secondly, a method based on undulator radiation interferometry is in development which is optimized for the lower energy range.
Supported by DFG (PO 256/7-1)

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