Local baryon number conservation induces small baryon-anti-baryon correlations at the second cumulant level, as quantified for the first time and compared to ALICE net-proton fluctuation data.
Particle Number Fluctuations in Statistical Model with Exact Charge Conservation Laws
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abstract
Even though the first momenta i.e. the ensemble average quantities in canonical ensemble (CE) give the grand canonical (GC) results in large multiplicity limit, the fluctuations involving second moments do not respect this asymptotic behaviour. Instead, the asymptotics are strikingly different, giving a new handle in study of statistical particle number fluctuations in relativistic nuclear reactions. Here we study the analytical large volume asymptotics to general case of multispecies hadron gas carrying fixed baryon number, strangeness and electric charge. By means of Monte Carlo simulations we have also studied the general multiplicity probability distributions taking into account the decay chains of resonance states.
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The role of the local conservation laws in fluctuations of conserved charges
Local baryon number conservation induces small baryon-anti-baryon correlations at the second cumulant level, as quantified for the first time and compared to ALICE net-proton fluctuation data.