Heavy quark flavour dependence of multiparticle production in QCD jets

Details Heavy quark flavour dependence of multiparticle production in QCD jets Heavy quark flavour dependence of multiparticle production in QCD jets

2010-05-10

arxiv.org/abs/1005.1582v3

Physics

High Energy Physics

High Energy Physics - Phenomenology

Version revised, accepted for publication in JHEP, 21 pages and 7 figures

Scientific paper

After inserting the heavy quark mass dependence into QCD partonic evolution equations, we determine the mean charged hadron multiplicity and second multiplicity correlators of jets produced in high energy collisions. We thereby extend the so-called dead cone effect to the phenomenology of multiparticle production in QCD jets and find that the average multiplicity of heavy-quark initiated jets decreases significantly as compared to the massless case, even taking into account the weak decay products of the leading primary quark. We emphasize the relevance of our study as a complementary check of $b$-tagging techniques at hadron colliders like the Tevatron and the LHC.

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