1 research outputs found
Bottomonia Hadroproduction
Get PDFWe analyze Tevatron data of bottomonium hadroproduction in the framework of
the colour-octet model (COM) implemented in the event generator PYTHIA using
CTEQ4L PDF taking into account initial-state radiation of gluons and
Altarelli-Parisi evolution of final-state gluons. We obtain new values for the
colour-octet matrix elements relevant to this production process for the
Upsilon(nS) family (n=1,2,3), finding that the ^1S_0^{(8)}+^3P_J^{(8)}
contributions are not needed in the fit. We show the different contributions to
Upsilon(1S) production at Tevatron for p_T>8 GeV, comparing them with CDF data.
Finally we extrapolate to LHC energies to predict Upsilon(nS) production rates.Comment: Talk given at 4th International Conference on Hyperons, Charm and
Beauty Hadrons, Valencia, Spain, 27-30 Jun 2000. LaTeX, 4 pages, 4 EPS
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