String Effects on Fermi--Dirac Correlation Measurements

Simple item page
dc.creatorDelgado, Rosa Maia Duran
dc.creatorGustafson, Gosta
dc.creatorLonnblad, Leif
dc.date2007-02-23
dc.date2007-02-27
dc.date.accessioned2026-07-07T11:22:40Z
dc.date.available2026-07-07T11:22:40Z
dc.descriptionWe investigate some recent measurements of Fermi--Dirac correlations by the LEP collaborations indicating surprisingly small source radii for the production of baryons in $e^+e^-$-annihilation at the $Z^0$ peak. In the hadronization models there are besides the Fermi--Dirac correlation effect also a strong dynamical (anti-)correlation. We demonstrate that the extraction of the pure FD effect is highly dependent on a realistic Monte Carlo event generator, both for separation of those dynamical correlations which are not related to Fermi--Dirac statistics, and for corrections of the data and background subtractions. Although the model can be tuned to well reproduce single particle distributions, there are large model-uncertainties when it comes to correlations between identical baryons. We therefore, unfortunately, have to conclude that it is at present not possible to make any firm conclusion about the source radii relevant for baryon production at LEP.
dc.identifierhttps://arxiv.org/abs/hep-ph/0702241
dc.identifierhttp://arxiv.org/abs/hep-ph/0702241
dc.identifierEur.Phys.J.C52:113-119,2007
dc.identifierdoi:10.1140/epjc/s10052-007-0358-8
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/194646
dc.subjectHigh Energy Physics - Phenomenology
dc.titleString Effects on Fermi--Dirac Correlation Measurements
dc.typetext

Files

Collections

arXiv