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KMI2025 : The 6th KMI International Symposium

5–7 Mar 2025 Conference
Nagoya University
Asia/Tokyo timezone

Session

Session6

6
6 Mar 2025, 11:20
Sakata and Hirata Hall (Nagoya University)

Sakata and Hirata Hall

Nagoya University

Science South bulding, Furo-cho, Chikusa, Nagoya, Aichi, 464-8602, Japan

Conveners

Session6

  • Masaaki Kitaguchi

Presentation materials

There are no materials yet.

  1. 24. An improved result of neutron lifetime measurement with cold neutron beam at J-PARC
    Kenji Mishima (KMI, Nagoya University)
    06/03/2025, 11:20

    The "neutron lifetime puzzle" arises from the discrepancy between neutron lifetime measurements obtained using the beam method, which measures decay products, and the bottle method, which measures the disappearance of neutrons. To resolve this puzzle, we conducted an experiment using a pulsed cold neutron beam at J-PARC.

    In this experiment, the neutron lifetime is determined from the ratio...

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  2. 25. Search for T-violation using polarized neutron beam and polarized target : NOPTREX (J-PARC E99)
    Takuya Okudaira (Nagoya University)
    06/03/2025, 11:40

    The violation of discrete symmetries can be significantly enhanced in neutron absorption reactions by nuclei. The NOPTREX collaboration aims to search for an unknown T-violating interaction in nucleon-nucleon interactions using a polarized neutron beam and a polarized nuclear target at J-PARC. The development of a neutron polarizer and a polarized target is currently ongoing. Experiments using...

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  3. 26. Hadron Spectroscopy — Past, Present (and Future) —
    Atsushi Hosaka
    06/03/2025, 12:00
    TBA
  4. 27. Exotic hadrons as heavy hadronic molecules and their partners
    Yasuhiro Yamaguchi (Nagoya University)
    06/03/2025, 12:30

    Recent accelerator experiments have reported unexpected states known as exotic hadrons, whose properties cannot be explained by the conventional picture, mesons and baryons. In the heavy quark sector, $XYZ$, $T_{cc}$, $P_c$ etc. have been reported since the discovery of $X(3872)$. There have been many exotic hadrons located near the hadron threshold, and thus loosely hadron bound states called...

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  5. 28. FASER experiment at the LHC and its connection to the cosmic-ray muon puzzle
    Ken Ohashi (LHEP, University of Bern)
    06/03/2025, 12:50
    Invited

    Ultra-high energy cosmic rays are the highest energy particles arriving at the Earth and measured using an extensive air shower induced by them. In 2015, the Pierre Auger Observatory reported an excess of the number of muons in an extensive air shower than that expected in simulations. This indicates a puzzle, a muon puzzle, suggesting the interactions in an extensive air shower are not...

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