Author: Geoffrey E. Forden
Publisher:
ISBN:
Category : Cross sections (Nuclear physics)
Languages : en
Pages : 284
Book Description
Direct Photons in Hardonic Jets from E+E− Annhilation at 29 Gev
Author: Geoffrey E. Forden
Publisher:
ISBN:
Category : Cross sections (Nuclear physics)
Languages : en
Pages : 284
Book Description
Publisher:
ISBN:
Category : Cross sections (Nuclear physics)
Languages : en
Pages : 284
Book Description
Direct Photons in Hardonic Jets from EE− Annhilation at 29 Gev /#c by Geoffrey E. Forden
Author: Geoffrey E. Forden
Publisher:
ISBN:
Category : Cross sections (Nuclear physics)
Languages : en
Pages : 244
Book Description
Publisher:
ISBN:
Category : Cross sections (Nuclear physics)
Languages : en
Pages : 244
Book Description
Comparison of Three-jet and Radiative Two-jet Events in Electron-positron Annihilation at 29 GeV
Author: Paul Douglas Sheldon
Publisher:
ISBN:
Category :
Languages : en
Pages : 182
Book Description
Publisher:
ISBN:
Category :
Languages : en
Pages : 182
Book Description
Multiplicity Distributions in Ee− Annihilation at 29 GeV
Author:
Publisher:
ISBN:
Category :
Languages : en
Pages :
Book Description
The charged particle multiplicity distributions for single jets in ee− annihilation at 29 GeV have been measured using the High Resolution Spectrometer at PEP. The shape of the distribution agrees well with a Poisson distribution. No correlation is observed between the multiplicities in the two jets of an event. For fixed values of the prong number of the total event, the multiplicity sharing between the two jets is in good agreement with a binomial distribution. These observations are contrasted to the results from soft hadronic collisions and conclusions are drawn about the nature of clusters. 21 refs., 4 figs.
Publisher:
ISBN:
Category :
Languages : en
Pages :
Book Description
The charged particle multiplicity distributions for single jets in ee− annihilation at 29 GeV have been measured using the High Resolution Spectrometer at PEP. The shape of the distribution agrees well with a Poisson distribution. No correlation is observed between the multiplicities in the two jets of an event. For fixed values of the prong number of the total event, the multiplicity sharing between the two jets is in good agreement with a binomial distribution. These observations are contrasted to the results from soft hadronic collisions and conclusions are drawn about the nature of clusters. 21 refs., 4 figs.
Comparison of Three-jet and Radiative Two-jet Events in Electron-positron Annihilation at 29 GeV.
Author:
Publisher:
ISBN:
Category :
Languages : en
Pages :
Book Description
By comparing 3-jet (ee− .-->. q anti q g) and radiative 2-jet (ee− .-->. q anti q .gamma.) events from electron-positron annihilation, we have studied the local and global effects of the presence of a hard bremsstrahlung gluon in hadronic events. Detector and event selection efficiencies and biases affect these two kinds of events almost equally because they have very similar kinematics and topologies. Accurate comparisons of q anti q g and q anti q .gamma. events can therefore be made. Globally, we observe a depletion of hadrons in q anti q g events relative to q anti q .gamma. events on the opposite side of the event plane from the gluon, in the angular region between the q and anti q jets. This depletion is shown to be in agreement with the predictions of Quantum Chromodynamics (QCD). The existence of this effect demonstrates that the presence of a gluon significantly alters the color forces and hence the fragmentation process in hadronic events. We also use these q anti q .gamma. and q anti q g events to compare low energy (4.5 GeV) gluon and quark jets. Our data indicate that gluon jets have softer x/sub p/ distributions than quark jets, while the transverse momentum distributions of these two types of jets are identical within our errors. Although we are unable to determine if the multiplicities of gluon (n/sub /) and quark (n/sub q/) jets are different, the ratio n/sub g//n/sub q/ = 9/4 predicted asymptotically in QCD would not be consistent with our data.
Publisher:
ISBN:
Category :
Languages : en
Pages :
Book Description
By comparing 3-jet (ee− .-->. q anti q g) and radiative 2-jet (ee− .-->. q anti q .gamma.) events from electron-positron annihilation, we have studied the local and global effects of the presence of a hard bremsstrahlung gluon in hadronic events. Detector and event selection efficiencies and biases affect these two kinds of events almost equally because they have very similar kinematics and topologies. Accurate comparisons of q anti q g and q anti q .gamma. events can therefore be made. Globally, we observe a depletion of hadrons in q anti q g events relative to q anti q .gamma. events on the opposite side of the event plane from the gluon, in the angular region between the q and anti q jets. This depletion is shown to be in agreement with the predictions of Quantum Chromodynamics (QCD). The existence of this effect demonstrates that the presence of a gluon significantly alters the color forces and hence the fragmentation process in hadronic events. We also use these q anti q .gamma. and q anti q g events to compare low energy (4.5 GeV) gluon and quark jets. Our data indicate that gluon jets have softer x/sub p/ distributions than quark jets, while the transverse momentum distributions of these two types of jets are identical within our errors. Although we are unable to determine if the multiplicities of gluon (n/sub /) and quark (n/sub q/) jets are different, the ratio n/sub g//n/sub q/ = 9/4 predicted asymptotically in QCD would not be consistent with our data.
Search for Single-photon Production in Ee− Annihilation at 29 GeV Center-of-mass Energy
Author: Christopher Hearty
Publisher:
ISBN:
Category : Photons
Languages : en
Pages : 174
Book Description
Publisher:
ISBN:
Category : Photons
Languages : en
Pages : 174
Book Description
Energy Research Abstracts
Proceedings of the XV International Symposium on Multiparticle Dynamics, Lund, Sweden, 10-16 June, 1984
Author: Gösta Gustafson
Publisher: World Scientific Publishing Company
ISBN:
Category : Science
Languages : en
Pages : 912
Book Description
General low PT physics; Low PT collider physics; Glueballs; Heavy flavour production; Cosmic ray physics; High PT jet production; Product of heavy objects; Two photon physics; Leptoproduction; One photon physics; Interplay between hard and soft processes; Quark fragmentation; Gluon versus quark fragmentation; Quark gluon Plasma; Outlook and future facilities.
Publisher: World Scientific Publishing Company
ISBN:
Category : Science
Languages : en
Pages : 912
Book Description
General low PT physics; Low PT collider physics; Glueballs; Heavy flavour production; Cosmic ray physics; High PT jet production; Product of heavy objects; Two photon physics; Leptoproduction; One photon physics; Interplay between hard and soft processes; Quark fragmentation; Gluon versus quark fragmentation; Quark gluon Plasma; Outlook and future facilities.
Theory of Jets in Electron-Positron Annihilation
Author: G. Kramer
Publisher: Springer
ISBN: 3540388214
Category : Science
Languages : en
Pages : 148
Book Description
Publisher: Springer
ISBN: 3540388214
Category : Science
Languages : en
Pages : 148
Book Description