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Measurement of the polarization in the reaction. pi. /sup -/+p. -->. pi. /sup 0/+n in the interval 0< Vertical Bar t Vertical Bar <2 (GeV/c) at 40 GeV/c

Journal Article · · Sov. J. Nucl. Phys. (Engl. Transl.); (United States)
OSTI ID:6368647
; ;
Measurements of the polarization in the reaction ..pi../sup -/p ..-->.. ..pi../sup 0/n are reported for the interval 0< Vertical Bar t Vertical Bar <2 (GeV/c)/sup 2/ at the momentum 40 GeV/c. The polarization is positive at Vertical Bar t Vertical Bar <0.4 (GeV/c)/sup 2/. In the ''crossover'' region of elastic ..pi../sup + -/p scattering, evidence is found for a minimum in the polarization (this is the first such evidence). The polarization near this point is compatible with a value of zero, within the experimental errors. Near the dip in the differential cross section for charge exchange, the polarization is negative. These results are at odds with published theoretical predictions.
Research Organization:
Institute of High-Energy Physics, Serpukhov
OSTI ID:
6368647
Journal Information:
Sov. J. Nucl. Phys. (Engl. Transl.); (United States), Journal Name: Sov. J. Nucl. Phys. (Engl. Transl.); (United States) Vol. 35:6; ISSN SJNCA
Country of Publication:
United States
Language:
English

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Related Subjects

645104* -- High Energy Physics-- Particle Interactions &amp; Properties-Experimental-- Strong Meson-Induced Interactions-- (-1987)
72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS
BARYONS
BASIC INTERACTIONS
BOSONS
CHARGE-EXCHANGE INTERACTIONS
DATA
ELEMENTARY PARTICLES
ENERGY RANGE
EXPERIMENTAL DATA
FERMIONS
GEV RANGE
GEV RANGE 10-100
HADRON-HADRON INTERACTIONS
HADRONS
INFORMATION
INTERACTIONS
MESON-BARYON INTERACTIONS
MESON-NUCLEON INTERACTIONS
MESONS
NEUTRONS
NUCLEONS
NUMERICAL DATA
PARTICLE INTERACTIONS
PION MINUS-PROTON INTERACTIONS
PION-NUCLEON INTERACTIONS
PION-PROTON INTERACTIONS
PIONS
PIONS NEUTRAL
POLARIZATION
POLARIZED PRODUCTS
POLARIZED TARGETS
PSEUDOSCALAR MESONS
STRONG INTERACTIONS
TARGETS