Mean multiplicity of light and heavy quark initiated jets

Details Mean multiplicity of light and heavy quark initiated jets Mean multiplicity of light and heavy quark initiated jets

2010-07-30

arxiv.org/abs/1007.5379v1

PoS LC2010:037,2010

Physics

High Energy Physics

High Energy Physics - Phenomenology

Plenary talk given at Light Cone 2010-LC2010, June 14-18, 2010, Valencia-Spain, to appear in the proceedings of the LC2010 con

Scientific paper

After inserting the heavy quark mass dependence into QCD partonic evolution equations, we determine the mean charged hadron multiplicity 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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