Study of the neutral meson spectrum near 1000 MeV [electronic resource].
- Published:
- Ames, Iowa : Ames Laboratory, 1975.
Oak Ridge, Tenn. : Distributed by the Office of Scientific and Technical Information, U.S. Dept. of Energy. - Physical Description:
- Pages: 138 : digital, PDF file
- Additional Creators:
- Ames Laboratory and United States. Department of Energy. Office of Scientific and Technical Information
Access Online
- Restrictions on Access:
- Free-to-read Unrestricted online access
- Summary:
- The nonstrange neutral meson spectrum from 0.75 to 1.23 GeV/c was studied in the reaction negative pion plus proton goes to neutron plus missing mass at incident beam momenta of 1.98 and 2.41 GeV/c. Neutrons produced by beam interactions in the liquid hydrogen target were detected in the near forward direction in an array of plastic scintillation counters. The missing mass of the remaining particles produced in the final state was determined by a measurement of the neutron time-of-flight. In the case of genuine two-body processes, ..pi../sup -/p ..-->.. n + meson, the observed neutron corresponded to mesons produced forward in the center of mass system. Forward going secondary charge particles produced in the hydrogen target were detected and momentum analyzed by the Argonne Effective Mass Spectrometer. This allowed the isolation of several constrained final states. Arrays of scintillation detectors surrounding the target gave charged particle information and enabled the data to be differentiated into various topological subsamples. The well established ..omega../sup 0/ meson was detected. In addition, a sharp break in the ..pi../sup +/..pi../sup -/n mass spectrum and a rapid rise of the K/sup +/K/sup -/n spectrum just above threshold was observed. Both of these effects were associated with the S* meson. Finally, the absence of four previously observed narrow mesons is discussed.
- Report Numbers:
- E 1.99:is-t-711
is-t-711 - Subject(s):
- Other Subject(s):
- Omega-784 Resonances
- Particle Production
- Pion Minus-Proton Interactions
- Final-State Interactions
- Inclusive Interactions
- S-1000 Resonances
- Charged Particles
- Gev Range 01-10.
- Kaons Plus
- Linear Momentum
- Mass Spectra
- Mev Range 100-1000
- Missing Mass
- Neutrons
- Pions Minus
- Pions Plus
- Threshold Energy
- Topology
- Baryons
- Bosons
- Elementary Particles
- Energy
- Energy Range
- Fermions
- Gev Range
- Hadron-Hadron Interactions
- Hadrons
- Interactions
- Kaons
- Mass
- Mathematics
- Meson Resonances
- Meson-Baryon Interactions
- Meson-Nucleon Interactions
- Mesons
- Mev Range
- Nucleons
- Particle Interactions
- Pion-Nucleon Interactions
- Pion-Proton Interactions
- Pions
- Pseudoscalar Mesons
- Resonance Particles
- Spectra
- Strange Particles
- Vector Mesons
- Note:
- Published through SciTech Connect.
12/01/1975.
"is-t-711"
Leeper, R.J. - Funding Information:
- W-7405-ENG-82
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