Bjorken variable and scale dependence of quark transport coefficient in semi-inclusive lepton production of hadron off nuclei
College of Physics and Hebei Advanced Thin Film Laboratory, Hebei Normal University, 050024, Shijiazhuang, People’s Republic of China
Accepted: 12 November 2021
Published online: 26 November 2021
Nuclear modification of hadron production in deep inelastic lepton-nucleus scattering can be applied to study the parton propagation mechanism in cold nuclear matter. By means of the analytic parameterization of quenching weight based on BDMPS formalism with the target nuclear geometry effect, the leading-order computations for hadron multiplicity ratios are performed with comparison to the HERMES charged pions production data on the quarks hadronization occurring outside the nucleus. The relation is discovered between quark transport coefficient and the measurable kinematic variables in deep inelastic scattering. Four models are proposed on the quark transport coefficient. The constant model, the power-law model and the double power-law model can be ruled out because of the experimental fact that the transverse momentum broadening increases as a function of the photon virtuality . The quark transport coefficient is determined as a function of the Bjorken variable x and scale . The trend of quark transport coefficient in respect of Bjorken variable x and scale is qualitatively in partial agreement with HERMES experimental data on transverse momentum broadening. It is hoped that our effort is conducive to understanding of jet quenching phenomenon in relativistic heavy ion collisions.
© The Author(s), under exclusive licence to Società Italiana di Fisica and Springer-Verlag GmbH Germany, part of Springer Nature 2021