Author: Mohammad Sajjad Alam
Publisher:
ISBN:
Category :
Languages : en
Pages : 444
Book Description
Search for Backwards Produced Exotic Meson Resonances and Study of Particle Spectra and Mass Distributions in the Reaction [pi] + P --> N (forward) + X++ at 8.4 GeV/c
Author: Mohammad Sajjad Alam
Publisher:
ISBN:
Category :
Languages : en
Pages : 444
Book Description
Publisher:
ISBN:
Category :
Languages : en
Pages : 444
Book Description
Search for Backwards Produced Exotic Meson Resonances and Study of Particle Spectra and Mass Distributions in the Reaction. Pi. + P. --]. N (forward) + X/sup + +/ at 8. 4 GeV/c. [Upper Limits, G Parity, 8. 4 GeV/c].
Author:
Publisher:
ISBN:
Category :
Languages : en
Pages :
Book Description
Results are reported from a hybrid experiment designed to search for backwards produced I = 2 exotic meson resonances by investigating the backward scattering reactions: .pi. + p .-->. in (forward) + .pi.+.pi.+, .pi.+.pi.+.pi.+.pi.−, .pi.+.pi.+.pi.+.pi.+.pi.−.pi.−, and p anti p.pi.+.pi.+ at an incident pion momentum of 8.4 GeV/c. The SLAC 15'' rapid cycling bubble chamber, operating at 20 cycles per second, was triggered by detecting fast forward neutrons in an optical spark chamber and scintillation counter array downstream. Following two-component duality arguments, Jacob and Weyers and Rosner have suggested backward scattering processes as a favored mode for exotic meson resonance production. Upper limits of the order of one microbarn are reported for the production of narrow exotic meson resonances with masses less than or equal to 3 GeV and which could decay into even G-parity states: .pi./sup +/.pi./sup +/, .pi./sup +/.pi./sup +/.pi./sup +/.pi.−, .pi./sup +/.pi./sup +/.pi./sup +/.pi./sup +/.pi.−.pi.−, and p anti p.pi./sup +/.pi./sup +/. The mass resolution in the above channels varied from 5 to 30 MeV over the mass range for the most restrictive sample of events. The statistical significance of the data corresponds to 30 events per microbarn. Evidence for forward N* and rho° production are also reported. The main features of the data can be simulated by a Monte Carlo model which incorporates Lorentz-invariant phase space modified by exponential transverse momentum damping on each final state particle and, in addition, takes into account the geometrical constraints and trigger requirements of the experiment.
Publisher:
ISBN:
Category :
Languages : en
Pages :
Book Description
Results are reported from a hybrid experiment designed to search for backwards produced I = 2 exotic meson resonances by investigating the backward scattering reactions: .pi. + p .-->. in (forward) + .pi.+.pi.+, .pi.+.pi.+.pi.+.pi.−, .pi.+.pi.+.pi.+.pi.+.pi.−.pi.−, and p anti p.pi.+.pi.+ at an incident pion momentum of 8.4 GeV/c. The SLAC 15'' rapid cycling bubble chamber, operating at 20 cycles per second, was triggered by detecting fast forward neutrons in an optical spark chamber and scintillation counter array downstream. Following two-component duality arguments, Jacob and Weyers and Rosner have suggested backward scattering processes as a favored mode for exotic meson resonance production. Upper limits of the order of one microbarn are reported for the production of narrow exotic meson resonances with masses less than or equal to 3 GeV and which could decay into even G-parity states: .pi./sup +/.pi./sup +/, .pi./sup +/.pi./sup +/.pi./sup +/.pi.−, .pi./sup +/.pi./sup +/.pi./sup +/.pi./sup +/.pi.−.pi.−, and p anti p.pi./sup +/.pi./sup +/. The mass resolution in the above channels varied from 5 to 30 MeV over the mass range for the most restrictive sample of events. The statistical significance of the data corresponds to 30 events per microbarn. Evidence for forward N* and rho° production are also reported. The main features of the data can be simulated by a Monte Carlo model which incorporates Lorentz-invariant phase space modified by exponential transverse momentum damping on each final state particle and, in addition, takes into account the geometrical constraints and trigger requirements of the experiment.
Search for Backwards-produced Exotic Meson Resonances in 8.4 GeV/c $pi$$sup +$p Interactions
Energy Research Abstracts
Author:
Publisher:
ISBN:
Category : Power resources
Languages : en
Pages : 908
Book Description
Semiannual, with semiannual and annual indexes. References to all scientific and technical literature coming from DOE, its laboratories, energy centers, and contractors. Includes all works deriving from DOE, other related government-sponsored information, and foreign nonnuclear information. Arranged under 39 categories, e.g., Biomedical sciences, basic studies; Biomedical sciences, applied studies; Health and safety; and Fusion energy. Entry gives bibliographical information and abstract. Corporate, author, subject, report number indexes.
Publisher:
ISBN:
Category : Power resources
Languages : en
Pages : 908
Book Description
Semiannual, with semiannual and annual indexes. References to all scientific and technical literature coming from DOE, its laboratories, energy centers, and contractors. Includes all works deriving from DOE, other related government-sponsored information, and foreign nonnuclear information. Arranged under 39 categories, e.g., Biomedical sciences, basic studies; Biomedical sciences, applied studies; Health and safety; and Fusion energy. Entry gives bibliographical information and abstract. Corporate, author, subject, report number indexes.
A Search for Exotic Meson Production at 13 GeV/c in the Reaction Pi- N --> P[subscript Forward]X--
Author: Arthur Edwin Kreymer
Publisher:
ISBN:
Category : Mesons
Languages : en
Pages : 300
Book Description
Publisher:
ISBN:
Category : Mesons
Languages : en
Pages : 300
Book Description