Suppression of multi-gluon fluctuations in jets at a Linear Collider

Details Suppression of multi-gluon fluctuations in jets at a Linear Collider Suppression of multi-gluon fluctuations in jets at a Linear Collider

2001-01-21

arxiv.org/abs/hep-ph/0101233v2

Phys.Lett. B509 (2001) 74-80

Physics

High Energy Physics

High Energy Physics - Phenomenology

11 pages, 3 eps figures, accepted by Phys. Lett. B

Scientific paper

10.1016/S0370-2693(01)00540-8

It was shown that at typical energies and luminosities of an $e^+e^-$ linear collider one can observe a significant suppression of fluctuations of the number of gluons in small angular regions. This property of jets is expected in $e^+e^-$ annihilation as well as in any collision producing high energy quarks which give rise to the QCD gluon cascade. The reduction of multiplicity fluctuations was obtained from perturbative QCD using bunching parameters and then cross checked with a Monte Carlo simulation. The parton-level Monte Carlo simulation confirms the prediction, while the hadron level illustrates that the effect survives the hadronization process.

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