Abstract
In this proceedings, the lifetime and yields of Λ3H and Λ4H in Au+Au collisions at √SNN = 3 GeV are presented. The measured yields are compared to measurements at other energies and theoretical models, and the physics implications are discussed. We also report the first observation of the Λ3H and Λ4H directed flow in 5 - 40% centrality. The directed flow of Λ3H and Λ4H are compared with those of the copiously produced particles such as p, Λ, d, t, 3He, and 4He. These results shed light on light hyper-nuclei production in heavy-ion collisions in the high baryon density region.
Highlights
As is known to all, the normal nucleus is made up of protons and neutrons
The gold beam of 3.85 GeV/u is collided on a thin gold target with 1% interaction probability, located at 200 cm along the beam direction from the center of the STAR Time-Projection Chamber (TPC)
A total of 260M good minimum bias (MB) events were selected for this analysis
Summary
As is known to all, the normal nucleus is made up of protons and neutrons. When a nucleon is replaced by a Λ hyperon The first order coefficient of the Fourier-expansion of azimuthal distribution, known as directed flow (v1 ), has been analyzed for all particles ranging from the lightest pion-mesons to light nuclei in such collisions [4,5]. In this proceedings, the lifetime, yields and directed flow of 3Λ H and 4Λ H in Au+Au colli√. The gold beam of 3.85 GeV/u is collided on a thin gold target with 1% interaction probability, located at 200 cm along the beam direction from the center of the STAR Time-Projection Chamber (TPC). A total of 260M good minimum bias (MB) events were selected for this analysis
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