Author: J. R. WuPublisher:
ISBN:
Category :
Languages : en
Pages : 55
Book Description
Charged Particle Spectra
Author: J. R. WuAutomatic Analysis of Charged Particle Spectra
Author: Z. SeresCharged Particle Spectra in /+32\S + /+32\S Interactions at 200 GeV/Nucleon from CCD-Imaged Nuclear Collisions in a Streamer Chamber
Author: Lawrence Paul TeitelbaumPublisher:
ISBN:
Category : Hadron spectroscopy
Languages : en
Pages : 600
Book Description
Charged Particle Spectra in Different Final States at √s
Author: J. M. Grados LuyandoAtomatic analysis of charged particle spectra
Author: Zoltan SeresA Study of Charged Particle Spectra in 158 GeV/c Pb-Pb Collisions
Author: Lachlan Andrew David HillPublisher:
ISBN:
Category :
Languages : en
Pages :
Book Description
Charged Particle Spectra in [sup 32] + [sup 32] Interactions at 200 GeV
![Charged Particle Spectra in [sup 32] + [sup 32] Interactions at 200 GeV PDF](https://books.google.com/books/content/images/frontcover/nHmMAQAACAAJ?fife=w80-h100)
Author: Publisher:
ISBN:
Category :
Languages : en
Pages : 208
Book Description
We have measured the transverse momentum spectra 1/p[sub T] dN/dp[sub T] and rapidity distributions dN/dy of negatively charged hadrons and protons for central [sup 32]S + [sup 32]S interactions at 200 GeV/nucleon incident energy. The negative hadron dN/dy distribution is too broad to be accounted for by thermal models which demand isotropic particle emission. It is compatible with models which emphasize longitudinal dynamics, by either a particle production mechanism, as in the Lund fragmentation model, or by introducing one-dimensional hydrodynamic expansion, as in the Landau model. The proton dN/dy distribution, although showing no evidence for a peak in the target fragmentation region, exhibits limited nuclear stopping power. We estimate the mean rapidity shift of participant target protons to be [Delta]y [approximately] 1.5, greater than observed for pp collisions, less than measured in central pA collisions, and much less than would be observed for a single equilibrated fireball at midrapidity. Both the negative hadron and proton dN/dy distributions can be fit by a symmetric Landau two-fireball model. Although the spectrum possesses a two-component structure, a comparison to pp data at comparable center-of-mass energy shows no evidence for enhanced production at low p[sub T]. The two-component structure can be explained by a thermal and chemical equilibrium model which takes into account the kinematics of resonance decay. Using an expression motivated by longitudinal expansion we find the same temperature for both the protons and negative hadrons at freezeout, T[sub f] [approximately] 170 MeV. We conclude that the charged particle spectra of negative hadrons and protons can be accommodated in a simple collision picture of limited nuclear stopping, evolution through a state of thermal equilibrium, followed by longitudinal hydrodynamic expansion until freezeout.
Charged Particle Spectra in {sup 32}S + {sup 32}S Interactions at 200 GeV/nucleon from CCD-imaged Nuclear Collisions in a Streamer Chamber
Author: Publisher:
ISBN:
Category :
Languages : en
Pages : 208
Book Description
We have measured the transverse momentum spectra 1/p{sub T} dN/dp{sub T} and rapidity distributions dN/dy of negatively charged hadrons and protons for central 32S + 32S interactions at 200 GeV/nucleon incident energy. The negative hadron dN/dy distribution is too broad to be accounted for by thermal models which demand isotropic particle emission. It is compatible with models which emphasize longitudinal dynamics, by either a particle production mechanism, as in the Lund fragmentation model, or by introducing one-dimensional hydrodynamic expansion, as in the Landau model. The proton dN/dy distribution, although showing no evidence for a peak in the target fragmentation region, exhibits limited nuclear stopping power. We estimate the mean rapidity shift of participant target protons to be?y - 1.5, greater than observed for pp collisions, less than measured in central pA collisions, and much less than would be observed for a single equilibrated fireball at midrapidity. Both the negative hadron and proton dN/dy distributions can be fit by a symmetric Landau two-fireball model. Although the spectrum possesses a two-component structure, a comparison to pp data at comparable center-of-mass energy shows no evidence for enhanced production at low p{sub T}. The two-component structure can be explained by a thermal and chemical equilibrium model which takes into account the kinematics of resonance decay. Using an expression motivated by longitudinal expansion we find the same temperature for both the protons and negative hadrons at freezeout, T{sub f} - 170 MeV. We conclude that the charged particle spectra of negative hadrons and protons can be accommodated in a simple collision picture of limited nuclear stopping, evolution through a state of thermal equilibrium, followed by longitudinal hydrodynamic expansion until freezeout.
Measurements of Charged-particle Transverse Momentum Spectra in PbPb Collisions at [square Root Of]nn
![Measurements of Charged-particle Transverse Momentum Spectra in PbPb Collisions at [square Root Of]nn PDF](https://books.google.com/books/content/images/frontcover/p8CHoAEACAAJ?fife=w80-h100)
Author: Eric AppeltPublisher:
ISBN:
Category : Collisions (Nuclear physics)
Languages : en
Pages : 148
Book Description
Author: Zoltan Seres