An extraction of jet transport coefficient in cold nuclear matter from world data
P. Ru*, Z.B. Kang, E. Wang, H. Xing and B.W. Zhang
Published on:
September 01, 2021
Abstract
Within the theoretical framework of the generalized factorization of perturbative QCD, i.e., the higher-twist expansion formalism, we perform the first global analysis of the jet transport coefficient ($\hat q$) in cold nuclear matter, in which analysis we take into account the available data on various types of transverse momentum broadening in $e$A and $p$A collisions, as well as the nuclear modification of the structure functions in DIS. The global analysis suggests a universal and kinematics-dependent $\hat q=\hat q\,(x,Q^2)$ in cold nuclear matter, which would be instructive for understanding the jet quenching phenomena and the property of quark-gluon plasma in a more accurate way. Further more, utilizing the Hessian matrix, we evaluate the uncertainty of the extracted $\hat q\,(x,Q^2)$ under the constraints of the current data and generate the error evaluation sets of $\hat q\,(x,Q^2)$, with which we make preliminary predictions for the future EIC experiments at three facilities covering a wide kinematic range.
DOI: https://doi.org/10.22323/1.387.0152
How to cite
Metadata are provided both in "article" format (very similar to INSPIRE) as this helps creating
very compact bibliographies which can be beneficial to authors and
readers, and in "proceeding" format
which is more detailed and complete.