Hadrons from Coalescence plus Fragmentation in AA collisions from RHIC to LHC energy

Understand

In a coalescence plus independent fragmentation approach we calculate the $p_T$ spectra of the main hadrons: $\pi, K, p, \bar p, \Lambda, \phi$ in a wide range of transverse momentum from low $p_T$ up to about 10 GeV.

• The approach in its main features was developed several years ago at RHIC energy.
• Augmenting the model with the inclusion of some more main resonance decays, we show that the approach correctly predicts the evolution of the $p_T$ spectra from RHIC to LHC energy and in particular the baryon-to-meson ratios $p/\pi,\bar p/\pi,\Lambda/K$ that reach a value of the order of unit at $p_T \sim 3\, \rm GeV$.
• This is achieved without any change of the coalescence parameters.