News from the NA61/SHINE experiment

Evgeny Andronov, V.E. Volkova, Y.V. Zhezher, D.G. Levkov, V.A. Rubakov, V.A. Matveev
2018 EPJ Web of Conferences  
NA61/SHINE is a fixed target experiment operating at the CERN SPS. Its main goals are to search for the critical point of strongly interacting matter and to study the onset of deconfinement. For these goals a scan of the two dimensional phase diagram (T -µ B ) is being performed at the SPS by measurements of hadron production in proton-proton, proton-nucleus and nucleusnucleus interactions as a function of collision energy. In this paper the status of the NA61/SHINE strong interaction physics
more » ... ogramme is presented including recent results on proton intermittency, strongly intensive fluctuation observables of multiplicity and transverse momentum fluctuations. These measurements are expected to be sensitive to the correlation length in the produced matter and, therefore, have the ability to reveal the existence of the critical point via possible non-monotonic behavior. The NA61/SHINE results are compared to the model predictions. P T − N fluctuation measures Study of event-by-event fluctuations is one of the main tools to search for the posible existence of the critical point. The strength of fluctuations of a given observable can be quantified by the moments of its distribution. The commonly studied quantity is the scaled variance that is constructed for a given observable, X, from the first and second moments of the multiplicity distribution as ω[X] = X 2 − X 2 X , where · · · stands for the averaging over all events. *
doi:10.1051/epjconf/201819105002 fatcat:6wog7hs42jgvpcbfwampfgltyi