Elastic scattering near 90/sup 0/ cm: tests of parton and resonance models. [1. 9 to 9. 5 GeV/c, cross sections, Ericson theory, scaling]

Conference · Sun Jan 01 04:00:00 EST 1978 · AIP (Am. Inst. Phys.) Conf. Proc.; (United States)

OSTI ID:6362381

Price, L E

High statistics, high resolution (in s and t) measurements were made of ..pi../sup -/p elastic scattering between 1.9 and 9.5 GeV/c and of ..pi../sup +/p between 1.9 and 6.3 GeV/c. A roughly constant angular range was covered with -0.3 < costheta/sub cm/ < +0.4. The data fill an important gap in existing measurements and allow sensitive tests of two theoretical models of hadronic scattering. Models with rising densities of states, such as the statistical bootstrap model predict statistical fluctuations in the cross section as ..sqrt..s is changed by a typical resonance width. Such fluctuations were first investigated by Ericson in nuclear physics and were proposed for hadronic scattering by Frautschi. The data show significant structure that can be interpreted as Ericson fluctuations. Scaling predictions were made based on the quark parton model that at constant angle dsigma/dt proportional to s/sup -8/. It is found that the measured cross sections do not conform to this prediction in detail. 22 references.

• Research Organization: Columbia Univ., New York, NY
• OSTI ID: 6362381
• Report Number(s): CONF-780338-
• Conference Information: Journal Name: AIP (Am. Inst. Phys.) Conf. Proc.; (United States) Journal Volume: 45
• Country of Publication: United States
• Language: English

Related Subjects

645104* -- High Energy Physics-- Particle Interactions &amp; Properties-Experimental-- Strong Meson-Induced Interactions-- (-1987)
72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS
ASYMMETRY
BOOTSTRAP MODEL
COMPOSITE MODELS
CROSS SECTIONS
DIMENSIONS
ELASTIC SCATTERING
ENERGY RANGE
ERICSON THEORY
GEV RANGE
GEV RANGE 01-10
HADRON-HADRON INTERACTIONS
INTERACTIONS
INVARIANCE PRINCIPLES
LINEAR MOMENTUM
MATHEMATICAL MODELS
MESON-BARYON INTERACTIONS
MESON-NUCLEON INTERACTIONS
PARTICLE INTERACTIONS
PARTICLE MODELS
PARTICLE PROPERTIES
PARTICLE TRACKS
PARTICLE WIDTHS
PARTON MODEL
PION MINUS-PROTON INTERACTIONS
PION PLUS-PROTON INTERACTIONS
PION-NUCLEON INTERACTIONS
PION-PROTON INTERACTIONS
QUARK MODEL
RESONANCE
SCALE INVARIANCE
SCATTERING
STATISTICAL MODELS