Journal
PHYSICAL REVIEW C
Volume 89, Issue 3, Pages -Publisher
AMER PHYSICAL SOC
DOI: 10.1103/PhysRevC.89.034911
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Funding
- National Natural Science Foundation of China [11221504, 11035003]
- Major State Basic Research Development Program in China [2014CB845404]
- China MOST [2014DFG02050]
- Office of Energy Research
- Office of High Energy and Nuclear Physics
- Division of Nuclear Physics
- US Department of Energy [DE-AC02-05CH11231]
- Ministry of Education, Culture, Sports, Science and Technology (MEXT) of Japan [22340064]
- CCNU-QLPL Innovation Fund [QLPL2011P01]
- Grants-in-Aid for Scientific Research [22340064] Funding Source: KAKEN
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Initial conditions are required to solve medium modified Dokshitzer-Gribov-Lipatov-Altarelli-Parisi (mDGLAP) evolution equations for modified fragmentation functions due to multiple scatterings and parton energy loss. Such initial conditions should in principle include energy loss for partons at scale Q(0) above which mDGLAP evolution equations can be applied. Several models for the initial condition motivated by induced gluon bremsstrahlung in perturbative QCD are used to calculate the modified fragmentation functions in nuclear medium and to extract the jet transport parameter (q) over cap from fits to experimental data in deeply inelastic scattering (DIS) off nuclei. The model with a Poisson convolution of multiple gluon emissions is found to provide the overall best chi(2)/d.o.f. fit to the HERMES data and gives a value of (q) over cap (0) approximate to 0.020 +/- 0.005 GeV2/fm at the center of a large nucleus.
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