Abstract
The hyperon-hyperon and hyperon-nucleon interactions are important in search for exotic hadrons such dibaryon as a bound state of two baryons. Λ-Λ correlation has been measured in Au+Au collisions at √SNN = 200 GeV at RHIC-STAR experiment using high statistics data recently taken, which has been found to clearly show the anti-correlation. The first measurements of p-Ξ and Ξ-Ξ correlations in Au+Au collisions have been shown. The p-Ξ correlation function shows the strong attractive interaction, which is consistent with HAL QCD calculation. Ξ-Ξ correlation has also been measured to be negative (as anti-correlation).
Highlights
16 Hyperon-hyperon (Y-Y) and hyperon-nucleon (Y-N) interactions are important for studying17 exotic hadrons and to understand the equation of state of neutron stars
We presents new results of Λ√-Λ correlation as 26 well as p-Ξ correlation from high statistics data of Au+Au collisions at sNN = 200 GeV
We present the first measurement of Ξ-Ξ correlation to study a possible bound state or weak attractive interaction of Ξ-Ξ system predicted by lattice QCD calculations [7, 8]
Summary
16 Hyperon-hyperon (Y-Y) and hyperon-nucleon (Y-N) interactions are important for studying. 20 and isospin-singlet channel is most attractive according to lattice QCD calculation [2]. Study of Λ-Λ correlation has been performed in STAR [3] and ALICE experiments [4], 22 but the interaction is still not clear due to large experimental uncertainty and complication of. In this analysis, we presents new results of Λ√-Λ correlation as 26 well as p-Ξ correlation from high statistics data of Au+Au collisions at sNN = 200 GeV. We present the first measurement of Ξ-Ξ correlation to study a possible bound state or weak attractive interaction of Ξ-Ξ system predicted by lattice QCD calculations [7, 8]. 33 Coulomb interaction) at low relative momentum of two particles. (Color online) p-Ξ correlation function in 0-40% and 40-80% central Au+Au collisions at sNN = 200 GeV [10]. Protons and daughter particles of Λ and Ξ were identified using Time Projection Chamber (TPC) and Time Of Flight (TOF) detectors, and Λ and Ξ were identified based on decay topology and/or KFParticle package [9]
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