Fig. 2: Self-analysing Λ hyperons reveal polarization through decays.
From: Measuring spin correlation between quarks during QCD confinement
dN/dcosθ* distributions of decay (anti)protons for \(\Lambda \bar{\Lambda }\), ΛΛ and \(\bar{\Lambda }\,\bar{\Lambda }\) hyperon pairs measured at mid-rapidity (|y| < 1). a, Short-range pairs (|Δy| < 0.5 and |Δϕ| < π/3). b, Long-range pairs. Statistical uncertainties are denoted by the error bars. The fits to the data represented by lines are used to demonstrate the magnitude of the spin–spin correlation.
