5.8 Trillion Degrees: Getting to the Bottom of When the Smallest Meson Melts — Scientists' calculations i |
may not be sufficiently hot to completely melt bottomonium. These collisions can still produce bottomonium particles, albeit at a lower rate. This theoretical guidance could advance the use of bottomonium melting as a tool for studying the properties of QGP.To determine the temperature at which bottomonium states melt in the quark-gluon plasma, scientists at Brookhaven Lab, Homi Bhabha National Institute in India, and Humboldt-University in Berlin calculated meson correlation functions.
The lattice QCD calculations show that only for temperatures above 5.8 trillion degrees Celsius is the behavior of the screening masses consistent with the expectations of an unbound b quark and anti-b quark. Therefore, the smallest bottomonium only melts at this temperature. Scientists do not expect to reach such temperatures in heavy ion collisions at RHIC, and they can only achieve these temperatures in heavy ion collisions at LHC for a short time.
Reference: “Bottomonium melting from screening correlators at high temperature” by Peter Petreczky, Sayantan Sharma and Johannes Heinrich Weber, 24 September 2021,
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