Physics – High Energy Physics – High Energy Physics - Phenomenology
Scientific paper
1995-10-06
Physics
High Energy Physics
High Energy Physics - Phenomenology
12 pages, LaTeX, uses epsfig.sty, 3 figures appended as uuencoded Z-compressed tarred PS-files, to be published in Proc. of XX
Scientific paper
Single particle inclusive energy spectra in $e^+e^-$ annihilation are analyzed in terms of moments. By assuming Local Parton Hadron Duality (LPHD), experimental data in a wide c.m. energy range from 3 GeV up to LEP energy are compared to the theoretical predictions of Modified Leading Log Approximation (MLLA) of QCD with and without taking into account the running of $\alpha_s$. MLLA with running coupling (Limiting Spectrum) is found to reproduce experimental results very well, while the model with fixed coupling is inconsistent with data. Rescaled cumulants are shown to be sensitive to the running of $\alpha_s$ in the asymptotic regime, while the Lorentz-invariant distribution, $E dn/d^3p$, points out this effect at very small energy $E$ of few hundreds MeV. These results give a direct evidence of the running of the QCD coupling in inclusive energy spectra and lend further support to the LPHD picture.
No associations
LandOfFree
Moment analysis of energy spectra and the effect of running coupling 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 Moment analysis of energy spectra and the effect of running coupling, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Moment analysis of energy spectra and the effect of running coupling will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-39094