Semi-inclusive dimuon production by 15. 0 GeV/c. pi. /sup -/ on protons
Thesis/Dissertation
·
OSTI ID:6090066
In an effort to learn more of the dynamics of directly produced leptons in hadronic reactions, direct dimuon production was studied in ..pi../sup -/ proton interactions at 15.0 GeV/c beam momentum. A collaboration among Brandeis University, the University of Cincinnati, and Syracuse University performed the experiment at Brookhaven National Laboratory's Multi-Particle Spectrometer facility, serviced by the AGS high energy unseparated beam. Previous experiments of this type have indicated that a residual signal exists in the 400 to 600 MeV/c/sup 2/ range of the dimuon mass spectrum after the effect of the rho, omega, and the zeta mesons have been accounted for. This experiment investigates the reaction ..pi../sup -/p ..-->.. ..mu../sup +/..mu../sup -/..pi../sup + -/ + anything, allowing the detection of the tensor mesons A/sup 0//sub 2/ and f if they decay as A/sup 0//sub 2/ or f ..-->.. ..mu../sup +/..mu../sup -/rho/sup 0/ ..-->.. ..mu../sup +/..mu../sup -/..pi../sup +/..pi../sup -/. The tensor mesons have been suggested as a source of the anomalous signal. The experimental results show an enhancement at the rho mass in the dimuon mass spectrum with the low mass region suppressed. The above mentioned tensor meson decays are not observed. The primary channel contributing to the rho appears to be ..pi../sup -/p ..-->.. rho/sup 0/..delta../sup 0/(1232) + pions, where p/sup 0/ ..-->.. ..mu../sup +/..mu../sup -/ and ..delta../sup 0/(1232) ..-->.. p..pi../sup -/.
- Research Organization:
- Cincinnati Univ., OH (USA)
- OSTI ID:
- 6090066
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
645102 -- High Energy Physics-- Particle Interactions & Properties-Experimental-- Weak Interactions & Properties
645104* -- High Energy Physics-- Particle Interactions & Properties-Experimental-- Strong Meson-Induced Interactions-- (-1987)
72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS
ACCELERATORS
BOSONS
BROOKHAVEN AGS
CYCLIC ACCELERATORS
ELEMENTARY PARTICLES
ENERGY RANGE
FERMIONS
GEV RANGE
GEV RANGE 10-100
HADRON-HADRON INTERACTIONS
HADRONS
INTERACTIONS
LEPTONS
MASS SPECTRA
MESON RESONANCES
MESON-BARYON INTERACTIONS
MESON-NUCLEON INTERACTIONS
MESONS
MUON PAIRS
MUONS
PAIR PRODUCTION
PARTICLE INTERACTIONS
PION MINUS-PROTON INTERACTIONS
PION-NUCLEON INTERACTIONS
PION-PROTON INTERACTIONS
RESONANCE PARTICLES
SPECTRA
SYNCHROTRONS
TENSOR MESONS
645104* -- High Energy Physics-- Particle Interactions & Properties-Experimental-- Strong Meson-Induced Interactions-- (-1987)
72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS
ACCELERATORS
BOSONS
BROOKHAVEN AGS
CYCLIC ACCELERATORS
ELEMENTARY PARTICLES
ENERGY RANGE
FERMIONS
GEV RANGE
GEV RANGE 10-100
HADRON-HADRON INTERACTIONS
HADRONS
INTERACTIONS
LEPTONS
MASS SPECTRA
MESON RESONANCES
MESON-BARYON INTERACTIONS
MESON-NUCLEON INTERACTIONS
MESONS
MUON PAIRS
MUONS
PAIR PRODUCTION
PARTICLE INTERACTIONS
PION MINUS-PROTON INTERACTIONS
PION-NUCLEON INTERACTIONS
PION-PROTON INTERACTIONS
RESONANCE PARTICLES
SPECTRA
SYNCHROTRONS
TENSOR MESONS