Crossing heavy-flavour thresholds in fragmentation functions | Zendy

Matteo Cacciari | Zendy; Paolo Nason | Zendy; C. Oleari | Zendy

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Crossing heavy-flavour thresholds in fragmentation functions

Author(s) -

Matteo Cacciari,

Paolo Nason,

C. Oleari

Publication year - 2005

Publication title -

journal of high energy physics

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 0.998

H-Index - 261

eISSN - 1126-6708

pISSN - 1029-8479

DOI - 10.1088/1126-6708/2005/10/034

Subject(s) - parton , flavour , physics , particle physics , fragmentation function , hadron , fragmentation (computing) , computer science , operating system

In analogy with parton distribution functions, also parton fragmentationfunctions obey matching conditions when crossing heavy-flavour thresholds. Wecompute these matching conditions at next-to-leading order in the strongcoupling constant alpha_s in the MSbar scheme. Our results can be used for thedynamical generation of the heavy-flavour component in next-to-leading orderfits to light-hadrons fragmentation functions. Furthermore, when computingperturbatively the charm fragmentation function from first principles andevolving it to higher scales, our matching conditions should be used forconsistency when crossing the bottom threshold.Comment: 9 pages, 2 figure

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