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Inclusive bottomonium hadroproduction at the Tevatron is firstly examined in a Monte Carlo framework with the colour-octet mechanism implemented in the event generation. We extract some NRQCD colour-octet matrix elements relevant for Υ(1S) hadroproduction. Remarkably we find a quite small contribution (compatible with zero) from feeddown of χ bJ states produced through the colour-octet...
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