Physics – High Energy Physics – High Energy Physics - Phenomenology
Scientific paper
2002-12-09
Phys.Rev. D67 (2003) 094022
Physics
High Energy Physics
High Energy Physics - Phenomenology
21 pages in RevTex, 10 figures
Scientific paper
10.1103/PhysRevD.67.094022
The first order correction to the parton fragmentation functions in a thermal medium is derived in the leading logarithmic approximation in the framework of thermal field theory. The medium-modified evolution equations of the parton fragmentation functions are also derived. It is shown that all infrared divergences, both linear and logarithmic, in the real processes are canceled among themselves and by corresponding virtual corrections. The evolution of the quark number and the energy loss (or gain) induced by the thermal medium are investigated.
Osborne Jonathan A.
Wang Enke
Wang Xin-Nian
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