Measurement of the polarization for antiproton--proton annihilation into charged. pi. and K pairs between 1. 0 and 2. 2 GeV/c. [Differential cross sections, asymmetries]
Conference
·
· AIP (Am. Inst. Phys.) Conf. Proc.; (United States)
OSTI ID:7310439
The polarization parameter for the interactions anti pp ..-->.. ..pi../sup -/..pi../sup +/ and anti pp ..-->.. K/sup -/K/sup +/ was measured over essentially the full angular range at 11 momenta between 1.0 and 2.2 GeV/c. A proton target polarized perpendicular to the scattering plane was used. The experiment measured the angles and momenta of both outgoing particles using wire spark chambers and the field of the polarized target magnet. Between 1000 and 5300 ..pi../sup -/..pi../sup +/ events, and 140 and 1300 K/sup -/K/sup +/ events, were measured at each momentum. As a check, one obtained differential cross sections for anti pp ..-->.. ..pi../sup -/..pi../sup +/ which are in excellent agreement with previous results. The polarizations for both channels are very large and positive over much of the angular range. Preliminary results of a fit to the cross sections and asymmetries for anti pp ..-->.. ..pi../sup -/..pi../sup +/ show strong evidence for three new resonances at 2.14, 2.36, and 2.40 GeV/c/sup 2/.
- Research Organization:
- Univ. of London
- OSTI ID:
- 7310439
- Conference Information:
- Journal Name: AIP (Am. Inst. Phys.) Conf. Proc.; (United States) Journal Volume: 12
- Country of Publication:
- United States
- Language:
- English
Similar Records
Differential cross sections for anti pp $Yields$ $pi$$sup -$$pi$$sup +$, K$sup -$K$sup +$ between 0.8 and 2.4 GeV/c
Antiproton--proton annihilation into charged pion and kaon pairs
Proton-anti-proton annihilations into two neutral mesons (. pi. /sup 0/. pi. /sup 0/,. pi. /sup 0/eta,etaeta) at 1. 862 GeV/c. [Angular distribution, cross sections]
Journal Article
·
Sun Dec 23 23:00:00 EST 1973
· Phys. Lett., B, v. 47B, no. 6, pp. 531-535
·
OSTI ID:4336349
Antiproton--proton annihilation into charged pion and kaon pairs
Conference
·
Tue Dec 31 23:00:00 EST 1974
·
OSTI ID:4002633
Proton-anti-proton annihilations into two neutral mesons (. pi. /sup 0/. pi. /sup 0/,. pi. /sup 0/eta,etaeta) at 1. 862 GeV/c. [Angular distribution, cross sections]
Technical Report
·
Tue Jun 01 00:00:00 EDT 1976
·
OSTI ID:7346783
Related Subjects
645103* -- High Energy Physics-- Particle Interactions & Properties-Experimental-- Strong Interactions & Baryon & Meson Properties
645104 -- High Energy Physics-- Particle Interactions & Properties-Experimental-- Strong Meson-Induced Interactions-- (-1987)
72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS
ANNIHILATION
ASYMMETRY
BARYON-BARYON INTERACTIONS
BASIC INTERACTIONS
BOSONS
CROSS SECTIONS
DECAY
DIFFERENTIAL CROSS SECTIONS
ELECTROMAGNETIC INTERACTIONS
ELEMENTARY PARTICLES
ENERGY RANGE
GEV RANGE
GEV RANGE 01-10
HADRON-HADRON INTERACTIONS
HADRONS
INTERACTIONS
KAONS
LINEAR MOMENTUM
MESON RESONANCES
MESONS
NUCLEON-ANTINUCLEON INTERACTIONS
PAIR PRODUCTION
PARTICLE INTERACTIONS
PIONS
POLARIZATION
PROTON-ANTIPROTON INTERACTIONS
PSEUDOSCALAR MESONS
RESONANCE PARTICLES
STRANGE PARTICLES
645104 -- High Energy Physics-- Particle Interactions & Properties-Experimental-- Strong Meson-Induced Interactions-- (-1987)
72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS
ANNIHILATION
ASYMMETRY
BARYON-BARYON INTERACTIONS
BASIC INTERACTIONS
BOSONS
CROSS SECTIONS
DECAY
DIFFERENTIAL CROSS SECTIONS
ELECTROMAGNETIC INTERACTIONS
ELEMENTARY PARTICLES
ENERGY RANGE
GEV RANGE
GEV RANGE 01-10
HADRON-HADRON INTERACTIONS
HADRONS
INTERACTIONS
KAONS
LINEAR MOMENTUM
MESON RESONANCES
MESONS
NUCLEON-ANTINUCLEON INTERACTIONS
PAIR PRODUCTION
PARTICLE INTERACTIONS
PIONS
POLARIZATION
PROTON-ANTIPROTON INTERACTIONS
PSEUDOSCALAR MESONS
RESONANCE PARTICLES
STRANGE PARTICLES