The 3rd Toyama International Symposium on "Physics at the Cosmic Frontier" (PCF2021)

7 Dec 2021, 14:45 → 22 Mar 2022, 16:15 Asia/Tokyo

A238 and Zoom (Faculty of Science, University of Toyama)

Mitsuru Kakizaki (University of Toyama)

20211214_K-Yagyu.pdf

20211221_T-Fujii.pdf

20220208_Y-kajimura.pdf

20220222_N-Sato.pdf

20220308_K-Girgis.pdf

20220322_K-Izumi.pdf

Tuesday 7 December

14:45 → 16:15 Overview of Lepton Flavor Violation: Masato Yamanaka

The standard model of particle physics is far from accounting
for mysteries about our universe, --e.g., what is dark matter and dark
energy?-- and it must be extended to a more fundamental description
of nature. Such new physics models allow Lepton Flavor Violating (LFV)
reactions (e.g., muon decays into an electron and a photon) which are
exactly forbidden in the standard model. Hence search for LFV is a clue
to the new physics, which unveil the flavor structure and the symmetries
behind it. In this talk, the general features of the LFV processes are
introductory reviewed, and theoretical and experimental progresses are
discussed.

Tuesday 14 December

14:45 → 16:15 New horizons in particle physics explored by Higgs physics: Kei Yagyu

It has been nine years since the Higgs boson was discovered at LHC.
However, the essence of Higgs physics, i.e., the origin of the spontaneous breaking of electroweak symmetry, has not yet been clarified.
On the other hand, a new physics model beyond the Standard Model (SM) must exist, due to phenomena which cannot be explained in the SM
such as the baryon number asymmetry of the Universe.
In this talk, I will first give a brief review of the Higgs physics,
and then discuss the possibility that the determination of the structure of the Higgs sector
is a "key" to explore new physics beyond the SM by introducing recent my works.

2021-12-Toyama.pdf

Tuesday 21 December

14:45 → 16:15 Unraveling mysteries of the most energetic particle in the universe: Toshihiro Fujii

Clarifying origins and acceleration mechanisms of the most energetic particles in the universe has been a decades-long endeavor, being one of the most intriguing mysteries in the interdisciplinary research among astroparticle physics, high-energy physics and nuclear physics. Since such ultra-high-energy cosmic rays (UHECRs) are deflected less strongly by the galactic and inter-galactic magnetic fields, due to their enormous kinetic energies, their arrival directions are ostensively correlated with their origins. A next-generation astronomy using UHECRs is hence a potentially viable probe to unravel mysteries of extremely energetic phenomena in the nearby universe. In this talk, I will highlight the introductory cosmic-ray physics, detection techniques and latest results of the two giant observatories, dubbed Telescope Array experiment and Pierre Auger Observatory including their on-going upgrades and address scientific objectives and requirements for future UHECR observatories.

211221_Toyama_Lecture_compressed.pdf

Tuesday 8 February

14:30 → 16:30 Performance evaluation of magnetic pla shield for protecting the cosmic radiation and obtaining the thrust: Performance evaluation of magnetic plasma shield for protecting the cosmic radiation and obtaining the thrust

Tuesday 22 February

14:30 → 16:30 Hamiltonian mechanics, Nambu mechanics, and generalized phase space

Tuesday 8 March

14:30 → 16:30 The South Atlantic Anomaly: Variations of its Magnetic Field, Proton Flux and Radiation Environment due to Space Weather Conditions

Tuesday 22 March

14:45 → 16:15 An overview of space gravitational wave observations