5,089 research outputs found
A Fixed-Order Calculation of the Heavy-Quark Fragmentation Function in e+e- Collisions
We use a recently completed O(alpha_s^2) fixed-order calculation of the
heavy-flavour production cross section in e+e- collisions to compute the
heavy-quark fragmentation function. We fit the result of our calculation,
convoluted with a Peterson fragmentation function, to available data for charm
production, and thus obtain a value for the parameter epsilon in the Peterson
function. We discuss the relevance of mass effects and of subleading terms in
our calculation.Comment: 7 pages, 2 eps figure
Plant connectivity underlies plant-pollinator-exploiter distributions in Ficus petiolaris and associated pollinating and non-pollinating fig wasps
Peer reviewedPostprin
The Top Mass in Hadronic Collisions
I discuss theoretical issues related to the top mass measurements in hadronic
collisions.Comment: Contribution to the volume "From My Vast Repertoire - The Legacy of
Guido Altarelli. Added in this version: three reference
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