Particle multiplicity in jets and subjets with jet axis from color current
- Max-Planck Institut fuer Physik, Werner-Heinsenberg-Institut, Foeringer Ring 6, D-80805 Muenchen (Germany)
We study the particle multiplicity in a jet or subjet as derived from an energy-multiplicity 2-particle correlation. This definition avoids the notion of a globally fixed jet axis and allows for the study of smaller jet cone openings in a more stable way. The results are sensitive to the mean color current <C>{sub A{sub 0}} in the jet from primary parton A{sub 0}, which takes into account intermediate partonic processes in the subjet production where C{sub F}<<C>{sub A{sub 0}}<N{sub c} at high energies. We generalize previous calculations in the leading logarithmic approximation (LLA). The size of the effects related to this jet axis definition is computed for multiplicities in subjets with different opening angles and energies by including contributions from the modified LLA and next-to-modified LLA to the leading order QCD results.
- OSTI ID:
- 21250614
- Journal Information:
- Physical Review. D, Particles Fields, Vol. 78, Issue 3; Other Information: DOI: 10.1103/PhysRevD.78.034010; (c) 2008 The American Physical Society; Country of input: International Atomic Energy Agency (IAEA); ISSN 0556-2821
- Country of Publication:
- United States
- Language:
- English
Similar Records
Subjet multiplicity in quark and gluon jets at D-Zero
Afterglow Light Curves from Impulsive Relativistic Jets with an Unconventional Structure