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- W2100065457 abstract "We describe B-hadron production in e+e- annihilation at the Z pole by means of a model including non-perturbative corrections to b-quark fragmentation as originating, via multiple soft emissions, from an effective QCD coupling constant, which does not exhibit the Landau pole any longer and includes absorbitive effects due to parton branching. We work in the framework of perturbative fragmentation functions at NLO, with NLL DGLAP evolution and NNLL large-x resummation in both coefficient function and initial condition of the perturbative fragmentation function. We include hadronization corrections via the effective coupling constant in the NNLO approximation and do not add any further non-perturbative fragmentation function. As part of our model, we perform the Mellin transforms of our resummed expressions exactly. We present results on the energy distribution of b-flavoured hadrons, which we compare with LEP and SLD data, in both x- and N-spaces. We find that, within the theoretical uncertainties on our calculation, our model is able to reasonably reproduce the data at x<0.92 and the first five moments of the B cross section." @default.
- W2100065457 created "2016-06-24" @default.
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- W2100065457 date "2007-07-01" @default.
- W2100065457 modified "2023-10-08" @default.
- W2100065457 title "Modelling non-perturbative corrections to bottom-quark fragmentation" @default.
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- W2100065457 doi "https://doi.org/10.1016/j.nuclphysb.2007.04.014" @default.
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