Zobrazeno 1 - 10
of 123
pro vyhledávání: '"Niida Takafumi"'
Autor:
Niida, Takafumi, Voloshin, Sergei A.
Publikováno v:
Int. J. Mod. Phys. E33 (2024) 2430010
The strongly interacting system created in ultrarelativistic nuclear collisions behaves almost as an ideal fluid with rich patterns of the velocity field exhibiting strong vortical structure. Vorticity of the fluid, via spin-orbit coupling, leads to
Externí odkaz:
http://arxiv.org/abs/2404.11042
Autor:
Niida, Takafumi
Publikováno v:
PoS SPIN2023 (2024) 237
In non-central heavy-ion collisions, a large orbital angular momentum of the colliding system is produced, which is then partially transferred to the created medium, resulting in the particle polarization on average along the initial angular momentum
Externí odkaz:
http://arxiv.org/abs/2402.13884
Polarization has opened a new physics chapter in relativistic heavy-ion collisions. Since the first prediction and experimental observation of global spin polarization, a lot of progress has been made in understanding its features, both at experiment
Externí odkaz:
http://arxiv.org/abs/2402.04540
Autor:
Niida, Takafumi
Since the observation of $\Lambda$ global polarization at RHIC, indicating the most vortical fluid ever observed so far, many experimental and theoretical progresses have been made in understanding of vorticity and polarization phenomena in heavy-ion
Externí odkaz:
http://arxiv.org/abs/2209.04115
Autor:
Niida, Takafumi
Publikováno v:
EPJ Web of Conferences 259, 06002 (2022)
Recent experimental results on global polarization of hyperons and spin alignment of vector mesons in heavy-ion collisions are reviewed, especially in context of the energy dependence and particle species dependence. New results on local polarization
Externí odkaz:
http://arxiv.org/abs/2204.03598
Autor:
Choudhury, Subikash, Dong, Xin, Drachenberg, Jim, Dunlop, James, Esumi, ShinIchi, Feng, Yicheng, Finch, Evan, Hu, Yu, Jia, Jiangyong, Lauret, Jerome, Li, Wei, Liao, Jinfeng, Lin, Yufu, Lisa, Mike, Niida, Takafumi, Ray, Robert Lanny, Sergeeva, Masha, Shen, Diyu, Shi, Shuzhe, Sorensen, Paul, Tang, Aihong, Tribedy, Prithwish, Van Buren, Gene, Voloshin, Sergei, Wang, Fuqiang, Wang, Gang, Xu, Haojie, Xu, Zhiwan, Yao, Nanxi, Zhao, Jie
Publikováno v:
Chinese Phys. C 46 014101 (2022)
The chiral magnetic effect (CME) is a novel transport phenomenon, arising from the interplay between quantum anomalies and strong magnetic fields in chiral systems. In high-energy nuclear collisions, the CME may survive the expansion of the quark-glu
Externí odkaz:
http://arxiv.org/abs/2105.06044
Autor:
Niida, Takafumi, Miake, Yasuo
The progress over the 30 years since the first high-energy heavy-ion collisions at the BNL-AGS and CERN-SPS has been truly remarkable. Rigorous experimental and theoretical studies have revealed a new state of the matter in heavy-ion collisions, the
Externí odkaz:
http://arxiv.org/abs/2104.11406
Autor:
Niida, Takafumi
New results on global polarization of $\Lambda$ hyperons in Au+Au collisions at $\sqrt{s_{NN}}$ = 200 GeV reveal non-zero signal on the order of a few tenths of a percent. Compared with lower energy results, the current measurement shows that the pol
Externí odkaz:
http://arxiv.org/abs/1808.10482
Autor:
Voloshin, Sergei A., Niida, Takafumi
Publikováno v:
Phys. Rev. C 94, 021901 (2016)
In high energy heavy ion collisions, the directed flow of particles is conventionally measured with respect to that of the projectile spectators, which is defined as positive $x$ direction. But it is not known if the spectators deflect in the "outwar
Externí odkaz:
http://arxiv.org/abs/1604.04597
Autor:
Niida, Takafumi
We present the first measurements of charge-dependent directed flow in Cu+Au collisions at t $\sqrt{s_{NN}}$ = 200 GeV. The directed flow has been measured as functions of the transverse momentum and pseudorapidity with the STAR detector. The results
Externí odkaz:
http://arxiv.org/abs/1601.01017