STAR BESII experiment
A superman team, from left are Krishan Gopal, Ming Shao, Yifei Zhang and Yue-Hang Leung.
Observation of antimatter hypernucleus anti-hyperhydrogen-4
Aug 21, 2024
STAR experiment has discovered a new antimatter nucleus, the heaviest ever detected. Composed of four antimatter particles — an antiproton, two antineutrons, and one antihyperon — known as antihyperhydrogen-4. [Nature (2024)]
Lifetime and yield of H3L and H4L measurements in high baryon density region
May 17, 2022
The precision measurements of lifetime and yield for hypertriton and hyperhydrogen-4 were measured by STAR in high baryon density region. [Phys. Rev. Lett. 128 (2022) 202301]
Strangeness enhancement with Ds/D0 in heavy-ion collisions
Aug 26, 2021
Enhancement of Ds/D0 ratio observed in heavy-ion collisions, consistent with a quark coalescence picture in hot-dense medium with strangeness rich environment. [Phys. Rev. Lett. 127 (2021) 092301]
charmed baryon enhancement observed in heavy-ion collisions at RHIC
May 01, 2020
Enhancement of Charmed baryon over meson ratio observed in heavy-ion collisions at RHIC provides important evidence of different hadronization mechanisms of charmed hadrons in hot QGP matter compared with cold/small system. [Phys. Rev. Lett. 118 (2020) 212301]
too heavy to be moved - heaviest quark flow observed at RHIC
June 10, 2020
Non-zero beauty quark flow was observed but less than charm quark flow and NCQ scaling hypothesis, indicating beauty is unlikely thermalized and too heavy to be moved in the partonic expansion of the nuclear matter. [Phys. Lett. B805 (2020) 135465]
Discovery of brownian motion of heavy quark in fermi scale
May 26, 2017
Brownian motion in fermi scale was observed via heavy quark diffusion in the evolution of the hot quark-gluon plasma. [Phys. Rev. Lett. 118 (2017) 212301]