Multiplicity of (mini-)jets at small x

• Verfasst von: Ewerz, Carlo [VerfasserIn]
• Verfasst von: Webber, Bryan R. [VerfasserIn]
• Titel: Multiplicity of (mini-)jets at small x
• Verf.angabe: Carlo Ewerz and Bryan R. Webber
• Fussnoten: Gesehen am 24.11.2017
• Titel Quelle: Enthalten in: Journal of high energy physics
• Jahr Quelle: 1999
• Band/Heft Quelle: (1999,08) Artikel-Nummer 019, 15 Seiten
• ISSN Quelle: 1029-8479
• DOI: doi:10.1088/1126-6708/1999/08/019
• Datenträger: Online-Ressource
• Sprache: eng
• K10plus-PPN: 1565692861

Abstract

We derive closed expressions for the mean and variance of the (mini-)jet multiplicity distribution in hard scattering processes at low x . Here (mini-)jets are defined as those due to initial-state radiation of gluons with transverse momenta greater than some resolution scale μ R , where Λ 2 << μ R 2 << Q 2 , Λ being the intrinsic QCD scale and Q the momentum transfer scale of the hard scattering. Our results are valid to leading order in log (1/ x ) but include all sub-leading logarithms of Q 2 /μ R 2 . As an illustration, we predict the mini-jet multiplicity in Higgs boson production at the Large Hadron Collider.