Recent Studies of Hypernuclei Formation with Electron Beams at MAMI

Patrick Achenbach, Carlos Ayerbe Gayoso, Ralph Böhm, Olga Borodina, Damir Bosnar, Vakkas Bozkurt, Luka Debenjak, Michael O. Distler, Anselm Esser, Ivica Friščić, Yu Fujii, Toshiyuki Gogami, Mar Gómez Rodríguez, Osamu Hashimoto, Satoshi Hirose, Hiroki Kanda, Masashi Kaneta, Eunhee Kim, Junichiro Kusaka, Amur MargaryanHarald Merkel, Ulrich Müller, Sho Nagao, Satoshi N. Nakamura, Josef Pochodzalla, Christophe Rappold, Joerg Reinhold, Takehiko R. Saito, Alicia Sanchez Lorente, Salvador Sánchez Majos, B. Sören Schlimme, Matthias Schoth, Florian Schulz, Concettina Sfienti, Simon Širca, Liguang Tang, Michaela Thiel, Kyo Tsukada

Research output: Contribution to journalArticlepeer-review

1 Citation (Scopus)


At the Mainz Microtron MAMI exploratory experiments on the spectroscopy of mesonic weak decays (MWD) of electroproduced Λ-hypernuclei were performed. A unique setup was realized to use the broad momentum-band kaon spectrometer Kaos at zero degree angle with respect to the high-intensity electron beam direction to tag strangeness producing processes. A sample of order 103 MWD from a beryllium target was collected by the coincidence technique with the high-resolution multi-spectrometer facility of the A1 Collaboration. It is conjectured that this sample contains monochromatic two-body decays from stopped hyperfragment decays as well as a wide momentum distribution of quasi-free produced Λ- and Σ-hyperon decays and three-body decays from hyperfragments. Stopped hyperfragments will be identified as monochromatic peaks in the π- momentum spectrum from which their masses can be extracted with a precision of 50 keV/c2.

Original languageEnglish
Pages (from-to)887-892
Number of pages6
JournalFew-Body Systems
Issue number8-10
Publication statusPublished - 2014 Aug

ASJC Scopus subject areas

  • Atomic and Molecular Physics, and Optics

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