13,136 research outputs found
Very High Multiplicity Hadron Processes
The paper contains a description of a first attempt to understand the
extremely inelastic high energy hadron collisions, when the multiplicity of
produced hadrons considerably exceeds its mean value. Problems with existing
model predictions are discussed. The real-time finite-temperature -matrix
theory is built to have a possibility to find model-free predictions. This
allows to include the statistical effects into consideration and build the
phenomenology. The questions to experiment are formulated at the very end of
the paper.Comment: 76 pp., 4 fig
Correlation measurements in high-multiplicity events
Requirements for correlation measurements in high--multiplicity events are
discussed. Attention is focussed on detection of so--called hot spots,
two--particle rapidity correlations, two--particle momentum correlations (for
quantum interferometry) and higher--order correlations. The signal--to--noise
ratio may become large in the high--multiplicity limit, allowing meaningful
single--event measurements, only if the correlations are due to collective
behavior.Comment: MN 55455, 20 pages, KSUCNR-011-92 and TPI-MINN-92/47-T (revised).
Revised to correct typo in equation (30), and to fill in a few steps in
calculations. Now published as Phys. Rev. C 47 (1993) 232
Analysis techniques for high-multiplicity collisions
I discuss methods for identifying and quantifying phase transitions in
particle collisions, concentrating on two techniques for use in
ultra-relativistic nuclear collisions. The first technique is to use rapidity
correlation measurements to determine the correlation length, while the second
is to use the transverse mass distribution of dileptons in the rho-omega peak
to determine the transition temperature.Comment: 5 pages (latex), preprint CERN-TH.6771/93. Proceedings of the XXIst
International Workshop on Gross Properties of Nuclei and Nuclear Excitations,
Hirschegg, Kleinwalsertal, Austria, January 1993 (GSI, Darmstadt, 1993; H.
Feldmeier, ed.
High multiplicity W+jets predictions at NLO
In these proceedings we present results from a recent calculation for the
production of a W boson in conjunction with five jets at next-to-leading order
in perturbative QCD. We also use results at lower multiplicities to extrapolate
the cross section to the same process with six jets.Comment: 5 pages, Proceedings for the DIS2013 conferenc
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