Extraction of the x-dependence of the non-perturbative QCD b-quark fragmentation distribution component

Details Extraction of the x-dependence of the non-perturbative QCD b-quark fragmentation distribution component Extraction of the x-dependence of the non-perturbative QCD b-quark fragmentation distribution component

2003-02-18

arxiv.org/abs/hep-ph/0302157v2

Phys.Lett. B580 (2004) 108-118

Physics

High Energy Physics

High Energy Physics - Phenomenology

13 pages

Scientific paper

Using recent measurements of the b-quark fragmentation distribution obtained in $e^+e^- \to b \bar{b}$ events registered at the Z pole, the non-perturbative QCD component of the distribution has been extracted independently of any hadronic physics modelling. This distribution depends only on the way the perturbative QCD component has been defined. When the perturbative QCD component is taken from a parton shower Monte-Carlo, the non-perturbative QCD component is rather similar with those obtained from the Lund or Bowler models. When the perturbative QCD component is the result of an analytic NLL computation, the non-perturbative QCD component has to be extended in a non-physical region and thus cannot be described by any hadronic modelling. In the two examples used to characterize these two situations, which are studied at present, it happens that the extracted non-perturbative QCD distribution has the same shape, being simply translated to higher-x values in the second approach, illustrating the ability of the analytic perturbative QCD approach to account for softer gluon radiation than with a parton shower generator.

Affiliated with

Also associated with

No associations

Rating

Extraction of the x-dependence of the non-perturbative QCD b-quark fragmentation distribution component 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 Extraction of the x-dependence of the non-perturbative QCD b-quark fragmentation distribution component, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Extraction of the x-dependence of the non-perturbative QCD b-quark fragmentation distribution component will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-501726