Calculation of power corrections to hadronic event shapes of tagged b events

Research output: Contribution to journalArticle

Abstract

We compute power corrections to mean values of hadronic event shapes - the thrust and the C parameter - of tagged b quark events in electron positron annihilation, using the dispersive approach. We find that the leading power corrections are of the same type of 1/Q corrections as for event shapes in the massless case, with the same non-perturbative coefficient times a perturbatively calculable mass-dependent coefficient. The effect of the mass correction in the power correction is to reduce the latter by 10-30% for tagged b events, for centre-of-mass energies ranging from the Z 0 peak down to 20 GeV.

Original languageEnglish
Pages (from-to)1-15
Number of pages15
JournalJournal of High Energy Physics
Volume4
Issue number1
Publication statusPublished - 2000

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coefficients
positron annihilation
thrust
center of mass
quarks
energy

Keywords

  • Jets
  • LEP HERA and SLC Physics
  • NLO Computations
  • QCD

ASJC Scopus subject areas

  • Nuclear and High Energy Physics

Cite this

Calculation of power corrections to hadronic event shapes of tagged b events. / Trócsányi, Z.

In: Journal of High Energy Physics, Vol. 4, No. 1, 2000, p. 1-15.

Research output: Contribution to journalArticle

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