Physics – High Energy Physics – High Energy Physics - Phenomenology
Scientific paper
2005-01-27
JHEP 0502 (2005) 053
Physics
High Energy Physics
High Energy Physics - Phenomenology
27 pages, 3 figures
Scientific paper
10.1088/1126-6708/2005/02/053
I present new results on the quark distribution in an on-shell heavy quark in perturbative QCD and explore its all-order relations with heavy-quark fragmentation. I first compute the momentum distribution function to all orders in the large-beta_0 limit and show that it is identical to the perturbative heavy-quark fragmentation function in the same approximation. I then analyze the Sudakov limit of the distribution and the fragmentation functions using Wilson lines and prove that the corresponding Sudakov exponents in the non-Abelian theory are the same to any logarithmic accuracy. The anomalous dimension is then determined to two-loop order, corresponding to next-to-next-to-leading logarithmic accuracy in the exponent, in two ways: the first by extracting the singular terms from a recent calculation of the fragmentation function and the second by performing the two-loop Wilson-line calculation in configuration space. I find perfect agreement between the two.
No associations
LandOfFree
On the quark distribution in an on-shell heavy quark and its all-order relations with the perturbative fragmentation function does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.
If you have personal experience with On the quark distribution in an on-shell heavy quark and its all-order relations with the perturbative fragmentation function, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and On the quark distribution in an on-shell heavy quark and its all-order relations with the perturbative fragmentation function will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-431211