Author: PLUTO Collaboration
Publisher:
ISBN:
Category :
Languages : en
Pages : 0
Book Description
A Study of Jets in Electron Positron Annihilation Into Hadrons in the Energy Range 3.1 to 9.5 GeV.
A Study of Jets in Electron Positron Annihilation Into Hadrons in the Energy Range 3.1 to 9.5 GeV.
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
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
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.
Experimental study of jets in electron-positron-annihilation
Analysis of B-jets in Electron-positron Annihilations at 35 GeV CM Energy$h
Evidence for higher twist effect in electron positron annihilation into hadrons at 10 GeV centre of mass energy
A Study of Specific Hadronic Final States in Electron-positron Annihilation at 34 GeV Centre of Mass Energy
Author: Philip Simon Bull
Publisher:
ISBN:
Category : Hadrons
Languages : en
Pages : 0
Book Description
Publisher:
ISBN:
Category : Hadrons
Languages : en
Pages : 0
Book Description