Italy-Japan Symposium on Joint Activities in Fundamental Physics - 日伊基礎物理学共同研究活動シンポジウム

Session

Session 7

S7

11 Mar 2026, 09:00

Kore University of Enna

Conveners

Session 7

• Alessandro Feliciello (Istituto Nazionale di Fisica Nucleare)

75. Hypernuclear physics at J-PARC

Hirokazu Tamura

11/03/2026, 09:00

The Japan-Italy collaboration in hypernuclear physics has a long history since the 1990s at DAΦNE (FINUDA experiment) and then at J-PARC.
　At J-PARC, we have studied spectroscopic studies of Ξ hypernuclei with the (K-,K+) reaction (E05) as well as neutron-rich Λ hypernuclei with the (π-,K+) reaction (E10), employing magnetic spectrometers at the K1.8 beam line. A missing mass spectrum for...

42. The Hyper-Kamiokande Project: Preparing for Discovery

Lucio Ludovici (Istituto Nazionale di Fisica Nucleare)

11/03/2026, 09:30

Hyper-Kamiokande is a next-generation neutrino experiment currently under construction in Japan. It will be the largest underground water Cherenkov detector ever built, with a fiducial volume eight times larger than its predecessor, Super-Kamiokande, which these days is celebrating 30 years of data taking. The inner detector will be equipped with tens of thousands of new photosensors,...

89. Progress and future prospect on the hyperon-proton scattering experiment

Koji Miwa

11/03/2026, 10:00

The hyperon-nucleon interactions are fundamental information to describe many-body nucleon systems containing hyperons, such as hypernuclei and neutron stars.
By extending the nuclear force to baryon-baryon interactions, we also can understand the nuclear force as the interaction between quark clusters, because new aspects of baryon-baryon interaction are expected to appear especially at...

71. The hyperon-nucleon interaction in low-energy effective field theory

Margherita Sagina (University of Pisa, INFN)

11/03/2026, 10:30

In recent years, there has been a notable interest in investigating hypernuclear systems, which pro- vide a unique laboratory for studying strong interactions in the strange quark sector. One of the main applications is related to the so-called “hyperon puzzle” in neutron stars, where theoretical models including hyperons predict maximum masses of ∼ 1.5 M⊙ or less, in conflict with...

88. The Experimental Study of Rare Kaon Decays at J-PARC with KOTO and KOTO II

Antonio Passeri (Istituto Nazionale di Fisica Nucleare)

11/03/2026, 10:45

The rare kaon decay $K_L \to \pi^0\nu\bar{\nu}$ is extremely sensitive to new physics, because in the Standard Model (SM) the decay is highly suppressed and its rate is known very accurately: its SM branching ratio (BR) is $3\times10^{-11}$ with a theoretical uncertainty of just 2\%. Measurement of this BR will provide essential new information about the flavor structure of the quark sector...