The In-medium scale evolution in jet modification
Jan, 2009Citations per year
Abstract: (arXiv)
The in-medium modification of the scale dependence of the fragmentation function in dense matter, brought about by higher twist corrections to the Dokshitzer-Gribov-Lipatov-Altarelli-Parisi (DGLAP) evolution equations, is derived. A phenomenologically motivated resummation is outlined which incorporates the next-to-leading twist single gluon emission kernel along with the vacuum emission kernel and provides an in-medium virtuality evolution of the final fragmentation function of a hard jet propagating through dense matter. The concept of a fragmentation function is generalized to include a dependence on distance travelled in the medium. Following this, numerical implementations are carried out and compared to experimental results on the single inclusive suppression observed in Deep-Inelastic scattering (DIS) off a large nucleus.- 25.75.Dw
- 11.10.Wx
- 12.38.Mh
- correction: higher-twist
- gluon: emission
- fragmentation function
- deep inelastic scattering
- scale dependence
- DGLAP equation
- quark: jet
References(31)
Figures(2)