A simplified model reproduces the observed non-monotonic pT correlation minimum via meson-baryon mixing, showing it is not a reliable signal for the QCD critical point.
Transverse momentum fluctuations due to temperature variation in high-energy nuclear collisions
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abstract
The event-by-event p_T-fluctuations due to the temperature variation are considered. The so-called Phi-measure is computed and shown to be a linear function of the temperature variance. The fluctuations of temperature naturally explain the data on Phi(p_T) in proton-proton and central Pb-Pb collisions but independent measurements of the temperature fluctuations are needed to confirm the explanation. Feasibility of such an event-by-event measurement is discussed.
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Non-monotonicity of $p_T$ correlations from meson-baryon mixing
A simplified model reproduces the observed non-monotonic pT correlation minimum via meson-baryon mixing, showing it is not a reliable signal for the QCD critical point.