TY  - JOUR
A1  - Vovchenko, Volodymyr
A1  - Alba, Paolo
A1  - Gorenstein, Mark I.
A1  - Stöcker, Horst
T1  - Van der Waals interactions and hadron resonance gas: role of resonance widths modeling on conserved charges fluctuations
T2  - EPJ Web of Conferences
N2  - The quantum van der Waals (QvdW) extension of the ideal hadron resonance gas (HRG) model which includes the attractive and repulsive interactions between baryons – the QvdW-HRG model – is applied to study the behavior of the baryon number related susceptibilities in the crossover temperature region. Inclusion of the QvdW interactions leads to a qualitatively different behavior of susceptibilities, in many cases resembling lattice QCD simulations. It is shown that for some observables, in particular for χBQ11/χB2, effects of the QvdW interactions essentially cancel out. It is found that the inclusion of the finite resonance widths leads to an improved description of χB2, but it also leads to a worse description of χBQ11/χB2, as compared to the lattice data. On the other hand, inclusion of the extra, unconfirmed baryons into the hadron list leads to a simultaneous improvement in the description of both observables.
Y1  - 2018
UR  - http://publikationen.ub.uni-frankfurt.de/frontdoor/index/index/docId/71859
UR  - https://nbn-resolving.org/urn:nbn:de:hebis:30:3-718598
SN  - 2100-014X
VL  - 171
IS  - 14006
PB  - EDP Sciences
CY  - Les Ulis
ER  -