EPJ Web of Conferences (Jan 2016)
Experimental investigations of the hypernucleus Λ4H
- 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.
Affiliations
- Achenbach P.
- Institut für Kernphysik, Johannes Gutenberg-Universität
- Schulz F.
- Institut für Kernphysik, Johannes Gutenberg-Universität
- Aulenbacher S.
- Institut für Kernphysik, Johannes Gutenberg-Universität
- Beričič J.
- Department of Physics, University of Ljubljana, and Jožef Stefan Institute
- Bleser S.
- Böhm R.
- Institut für Kernphysik, Johannes Gutenberg-Universität
- Bosnar D.
- Department of Physics, University of Zagreb
- Correa L.
- LPC-Clermont, Université Blaise Pascal, CNRS/IN2P3
- Distler M. O.
- Institut für Kernphysik, Johannes Gutenberg-Universität
- Esser A.
- Institut für Kernphysik, Johannes Gutenberg-Universität
- Fonvieille H.
- LPC-Clermont, Université Blaise Pascal, CNRS/IN2P3
- Friščić I.
- Department of Physics, University of Zagreb
- Fujii Y.
- Department of Physics, Tohoku University
- Fujita M.
- Department of Physics, Tohoku University
- Gogami T.
- Department of Physics, Tohoku University
- Kanda H.
- Department of Physics, Tohoku University
- Kaneta M.
- Department of Physics, Tohoku University
- Kegel S.
- Institut für Kernphysik, Johannes Gutenberg-Universität
- Kohl Y.
- Institut für Kernphysik, Johannes Gutenberg-Universität
- Kusaka W.
- Department of Physics, Tohoku University
- Margaryan A.
- Yerevan Physics Institute
- Merkel H.
- Institut für Kernphysik, Johannes Gutenberg-Universität
- Mihovilovič M.
- Institut für Kernphysik, Johannes Gutenberg-Universität
- Müller U.
- Institut für Kernphysik, Johannes Gutenberg-Universität
- Nagao S.
- Department of Physics, Tohoku University
- Nakamura S. N.
- Department of Physics, Tohoku University
- Pochodzalla J.
- Institut für Kernphysik, Johannes Gutenberg-Universität
- Lorente A. Sanchez
- Schlimme B. S.
- Institut für Kernphysik, Johannes Gutenberg-Universität
- Schoth M.
- Institut für Kernphysik, Johannes Gutenberg-Universität
- Sfienti C.
- Institut für Kernphysik, Johannes Gutenberg-Universität
- Širca S.
- Department of Physics, University of Ljubljana, and Jožef Stefan Institute
- Steinen M.
- Takahashi Y.
- Department of Physics, Tohoku University
- Tang L.
- Department of Physics, Hampton University
- Thiel M.
- Institut für Kernphysik, Johannes Gutenberg-Universität
- Tsukada K.
- Department of Physics, Tohoku University
- Tyukin A.
- Institut für Kernphysik, Johannes Gutenberg-Universität
- Weber A.
- Institut für Kernphysik, Johannes Gutenberg-Universität
- DOI
- https://doi.org/10.1051/epjconf/201611307001
- Journal volume & issue
-
Vol. 113
p. 07001
Abstract
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.
