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Modifications of large transverse momentum single hadron, dihadron, and$\gamma$-hadron spectra in relativistic heavy-ion collisions are directconsequences of parton-medium interactions in the quark-gluon plasma (QGP). Theinteraction strength and underlying dynamics can be quantified by the jettransport coefficient $\hat{q}$. We carry out the first global constraint on$\hat{q}$ using a next-to-leading order pQCD parton model with higher-twistparton energy loss and combining world experimental data on single hadron,dihadron, and $\gamma$-hadron suppression at both RHIC and LHC energies with awide range of centralities. The global Bayesian analysis using the informationfield (IF) priors provides the most stringent constraint on $\hat q(T)$. Wedemonstrate in particular the progressive constraining power of the IF Bayesiananalysis on the strong temperature dependence of $\hat{q}$ using data fromdifferent centralities and colliding energies. We also discuss the advantage ofusing both inclusive and correlation observables with different geometricbiases. As a verification, the obtained $\hat{q}(T)$ is shown to describe dataon single hadron anisotropy at high transverse momentum well. Predictions forfuture jet quenching measurements in oxygen-oxygen collisions are alsoprovided.

Global constraint on the jet transport coefficient from single hadron, dihadron and $\gamma$-hadron spectra in high-energy heavy-ion collisions