QCD universality recovered via the Total Available Quadri-Scalar
Article first published online: 9 JUN 2004
Copyright © 2004 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim
Annalen der Physik
Volume 13, Issue 6, pages 307–327, June 2004
How to Cite
Appignani, C. (2004), QCD universality recovered via the Total Available Quadri-Scalar. Ann. Phys., 13: 307–327. doi: 10.1002/andp.200310095
- Issue published online: 9 JUN 2004
- Article first published online: 9 JUN 2004
- Manuscript Accepted: 12 MAR 2004
- Manuscript Received: 23 JUL 2003
- QCD universality;
- effective energy;
- mean charged multiplicity.
After presenting a brief review of the phenomenology of the Leading Effect, we define a new variable, the “Total Available Quadri-Scalar” (ATOT) and propose it as the invariant quantity effectively available for the production of the multihadronic final states. The introduction and definition of this new varaible is justified by means of simple geometrical-kinematical considerations and we show that ATOT reduces to the so-called effective energy in the single specific situation where the use of the latter applies. Using ATOT to re-plot existing data, the quantity <nch> is shown to be a “Universality Feature” – that is, independent from the colliding particles, the collider nominal energy, and even from the hadronic invariant mass – as imposed by QCD universality.