Application of polarization in particle reactions

Thesis/Dissertation · Wed Jan 01 04:00:00 EST 1986

OSTI ID:6633121

Arash, F

In this dissertation polarization phenomena in particle reactions have been used to study the revealing features of the reactions. First, it is shown that it is impossible to design a non-dynamical null-experimental to test the time-reversal invariant. Second, the optimal formalism representation is used to determine proton-proton elastic scattering amplitudes at 579 MeV and 800 MeV. Thirdly, the polarization structure of two-body reaction in a collinear configuration is investigated, and it is demonstrated that the structure becomes much simpler than it was for the general configuration. Fourthly, an amplitude test is conducted to search for dibaryon resonances in p-p elastic scattering and it is found that at the energies around 800 MeV there is no evidence for any singlet partial wave state resonances. There exist, however, some tantalizing subliminal evidence for /sup 3/F/sub 3/ resonance. This method is also applied for pion-deutron elastic scattering to pin point the effect of a dibaryon resonance. Fifthly, evidence for the preeminence of one-particle-exchange mechanism is p-p elastic scattering is also examined in the 300 MeV-6 GeV/c range. Finally, a phenomenological model is developed to explain a striking feature of p-p scattering amplitudes pertaining to the amplitudes being either purely real or purely imaginary, and having three amplitudes almost equal in magnitudes and three times smaller than one amplitude in magnitude. This feature is extended to ..pi../sup +/p and k/sup +/p elastic scattering where spin flip and spin non-flip amplitudes appear to be equal in magnitude.

• Research Organization: Oregon Univ., Eugene (USA)
• OSTI ID: 6633121
• Country of Publication: United States
• Language: English

Related Subjects

645201* -- High Energy Physics-- Particle Interactions & Properties-Theoretical-- General & Scattering Theory
72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS
AMPLITUDES
BARYON RESONANCES
BARYON-BARYON INTERACTIONS
BARYONS
ELASTIC SCATTERING
ELEMENTARY PARTICLES
ENERGY RANGE
EXCHANGE INTERACTIONS
FERMIONS
GEV RANGE
GEV RANGE 01-10
HADRON-HADRON INTERACTIONS
HADRONS
HELICITY
INTERACTIONS
INVARIANCE PRINCIPLES
KAON PLUS-PROTON INTERACTIONS
KAON-NUCLEON INTERACTIONS
KAON-PROTON INTERACTIONS
MESON-BARYON INTERACTIONS
MESON-NUCLEON INTERACTIONS
MEV RANGE
MEV RANGE 100-1000
NUCLEON-NUCLEON INTERACTIONS
PARTIAL WAVES
PARTICLE INTERACTIONS
PARTICLE PROPERTIES
PION PLUS-PROTON INTERACTIONS
PION-DEUTERON INTERACTIONS
PION-NUCLEON INTERACTIONS
PION-PROTON INTERACTIONS
POLARIZATION
PROTON-NUCLEON INTERACTIONS
PROTON-PROTON INTERACTIONS
RESONANCE PARTICLES
SCATTERING
SCATTERING AMPLITUDES
SPIN FLIP
T INVARIANCE