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佐甲 博之
JPS Conference Proceedings (Internet), 32, p.010094_1 - 010094_6, 2020/07
At the future heavy-ion project at J-PARC (J-PARC-HI), we will study extremely dense matter 7 times as high as the normal nuclear density that was created in heavy-ion collisions at 1-19 AGeV/c. We will search for phase structures such as the first-order phase boundary and the critical point in the QCD phase diagram. We also aim at studying the properties of dense matter, such as the equation of state (EOS), leading to studies of neutron stars and neutron star mergers. In this talk, we will show the heavy-ion acceleration scheme at J-PARC, where we expect to produce the world's highest-rate heavy-ion beams of 
Hz with the ion species up to U. We will measure various observables in extremely high statistics, such as event-by-event fluctuations, dileptons, and multi-strangeness systems. We will show the design of the spectrometers to measure hadrons, dileptons, and hypernuclei, and evaluate their key performance.
-nuclear bound state at J-PARC佐久間 史典*; 橋本 直; 谷田 聖; 他66名*
JPS Conference Proceedings (Internet), 32, p.010088_1 - 010088_8, 2020/07
-nuclear bound states have been widely discussed as a consequence of the strongly attractive 
interaction in 
channels. Especially, the simplest -nuclear bound state of 
(denoted as "
") has attracted the strong interest both of theoretical and experimental studies. We observed a bound state below the 
mass threshold with in-flight 
induced reactions on 
He target, which can be interpreted as the "" bound state. The possible existence of the "" state is discussed from both aspects of production and decay: "" and 
productions, and non-mesonic 
and mesonic 
decays, respectively.
production in polarized 
collisions at 
GeV谷田 聖
no journal, ,
Transverse single spin asymmetry, 
, of very forward (
) production from 510 GeV collisions was measured by a newly installed electro-magnetic calorimeter at STAR experiment in June, 2017. Non-zero of forward (
) has been observed and described by partonic structure of the proton in perturbative QCD framework. However, recent data indicates a potential contribution from the diffractive interaction rather than partonic one. Here, AN of very forward production will provide a new insight on the origin of . In this presentation, we will report our measurement of very forward and preliminary result over the transverse momentum range of 
GeV/
and momentum fraction range of 
.
