Experimental investigations of the hypernucleus Λ4H

Autor: Achenbach P., Schulz F., Aulenbacher S., Beričič J., Bleser S., Böhm R., Bosnar D., Correa L., Distler M. O., Esser A., Fonvieille H., Friščić I., Fujii Y., Fujita M., Gogami T., Kanda H., Kaneta M., Kegel S., Kohl Y., Kusaka W., Margaryan A., Merkel H., Mihovilovič M., Müller U., Nagao S., Nakamura S. N., Pochodzalla J., Lorente A. Sanchez, Schlimme B. S., Schoth M., Sfienti C., Širca S., Steinen M., Takahashi Y., Tang L., Thiel M., Tsukada K., Tyukin A., Weber A.
Jazyk: angličtina
Rok vydání: 2016
Předmět:
Zdroj: EPJ Web of Conferences, Vol 113, p 07001 (2016)
Druh dokumentu: article
ISSN: 2100-014X
DOI: 10.1051/epjconf/201611307001
Popis: Negatively charged pions from two-body decays of stopped Λ4H hypernuclei were studied in 2012 at the Mainz Microtron MAMI, Germany. The momenta of the decay-pions were measured with unprecedented precision by using high-resolution magnetic spectrometers. A challenge of the experiment was the tagging of kaons from associated K+∧ production off a Be target at very forward angles. In the year 2014, this experiment was continued with a better control of the systematic uncertainties, with better suppression of coincident and random background, improved particle identification, and with higher luminosities. Another key point of the progress was the improvement in the absolute momentum calibration of the magnetic spectrometers.
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