Decay Pion Spectroscopy of 5ΛΛH at J-PARC

ORAL

Abstract

Investigation of hypernuclei with strangeness -2, i.e. Ξ-hypernuclei and double-Λ hypernuclei, is one of the most important subjects in strangeness nuclear physics. For example, observation of new double-Λ hypernuclear events in nuclear emulsion are expected at the J-PARC E07 experiment, which is in the analysis stage. Reaction spectroscopy for the 12C(K-,K+)12ΞBe reaction is planned as the J-PARC E70 experiment.

We have conceived a novel counter experiment to investigate a double-Λ hypernucleus, 5ΛΛH, by means of decay pion spectroscopy. It can be produced by decay of 7Ξ-H, which can be tagged by reaction spectroscopy of the 7Li(K-,K+) reaction. We submitted a Letter of Intent to the J-PARC PAC in June 2018. 

We will introduce the proposed experiment and report the current status of feasibility studies.

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Presenters

  • Hiroyuki Fujioka

    Tokyo Institute of Technology

Authors

  • Hiroyuki Fujioka

    Tokyo Institute of Technology

  • Tomokazu Fukuda

    Osaka Electro-Communication University

  • Emiko Hiyama

    Kyuhu University, Kyusu Univeristy, Kyushu University

  • Toshio Motoba

    Osaka Electro-Communication University

  • Tomofumi Nagae

    Kyoto University, Kyoto Univ

  • Sho Nagao

    Tohoku University

  • Toshiyuki Takahashi

    KEK, High Energy Accelerator Research Organization