Takao Sakaguchi's scientific contributions

Publications (7)

Preprint
Physics prospective of the high density matter using heavy ions collisions is presented. The J-PARC-HI project which is a unique lab to tackle the high density matter physics is described. The world highest rate of heavy ion beam of 10$^{11}$ Hz is aimed at J-PARC-HI which enables us to perform measurements of hadrons, fluctuation of conserved quan...
Preprint
Full-text available
An overview of the latest results on the hard probes from the PHENIX experiment at RHIC is given. The results on the measurements of high $p_{T}$ hadrons, hadron-hadron correlations, open heavy flavor and quarkonia, and direct photons from large (Au+Au) to small collision systems ($p$+Al and $p/d/^3$He+Au) provided a deeper insight on the medium cr...
Article
Full-text available
Overview of the latest low p T direct photon measurements by the PHENIX experiment at RHIC is presented. We found a smooth change of the effective temperature as a function of . We studied the scaling properties of the direct photon yield with various global observables. When plotting the direct photon yield as a function of dN ch/dη a universal sc...
Article
Full-text available
High $p_{\rm T}$ hadrons in the small systems of $d/^3$He+Au and $p$+Al/Au collisions have been measured at the midrapidity ($|\eta|<0.35$) as well as at the forward and backward rapidities ($1.2<|\eta|<2.4$) at $\sqrt{s_{NN}}$=200GeV. A clear system and centrality ordering in the $R_{p/d/{\rm HeA}}$ was observed for midrapidity $\pi^0$ production....
Article
Neutral pions have been measured in $^3$He+Au collisions at $\sqrt{s_{_{NN}}}$=200 GeV up to 20 GeV/$c$ in the RHIC Year-2014 run. The nuclear modification factor $R_{\rm AA}$ was measured and compared with that from $d$+Au collisions. The integrated $R_{\rm AA}$ as a function of $N_{\rm part}$ was calculated for $d$+Au, $^3$He+Au and Au+Au collisi...

Citations

... Matter Experiment (CBM) at the Facility for Antiproton and Ion Research (FAIR) [61,62] and the Multi Purpose Detector (MPD) at NICA (Nuclotron-based Ion Collider fAcility) at the Joint Institute for Nuclear Research (Dubna, Russia) [63] which are both in advanced stages of construction, as well as the planned CEE (CSR External Target) at High Intensity Heavy-Ion Accelerator Facility (HIAF) in China [64], and a possible future heavy-ion program at J-PARC (Japan Proton Accelerator Research Complex) which presently is a high intensity proton accelerator facility [65]. ...
... Recent studies from a Bayesian analysis [23] and lattice QCD calculation [24] present the temperature dependence ofq which agree with the previous work mentioned above. [11] and the references corresponding to each data are shown in the figure A jet can be reconstructed by final state particles using a clustering algorithm for a given jet radius and provides direct access to the initial partons and their energy loss. A momentum or energy imbalance of back-to-back jets was observed at the LHC as direct evidence of the jet quenching [25,26], and later a similar trend was observed at RHIC [27]. ...