Study of the E(1420) in /bar p/p annihilation at rest in H/sub 2/ gas
Conference
·
· AIP Conf. Proc.; (United States)
OSTI ID:6040135
We have observed the E meson produced in /bar p/p annihilation at rest (/bar p/p /r arrow/ ..pi../sup +/..pi..E /r arrow/ K/sup +//bar K//sup 0/..pi../minus/, K/sup /minus//K/sup 0//pi+/) in a H/sub 2/ gas target at NTP. The mass and width are M=1413+-8 MeV and GAMMA=62+-16 MeV. There is strong evidence (3sigma) for the production of the f/sub 1/(1285) in the same final state. The partial-wave analysis of the E decay Dalitz plot gives no preference for the spin-parity assignments 0/sup /minus/+/ or 1/sup + +/. The absolute branching ratio for (60+-10%) P wave annihlation is (3+-0.9) /center dot/ 10/sup /minus/4/, compared to (7.12m*0.7 /center dot/ 10/sup /minus/4/) in liquid H/sub 2/, suggesting that ..pi pi..E production is strongly suppressed in the P-wave. This result supports the 0/sup /minus// spin-parity assignment for the E meson.
- Research Organization:
- CERN-EP Division, Geneva, Switzerland(CH)
- OSTI ID:
- 6040135
- Report Number(s):
- CONF-880862-
- Conference Information:
- Journal Name: AIP Conf. Proc.; (United States) Journal Volume: 185:1
- Country of Publication:
- United States
- Language:
- English
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Journal Article
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Fri Oct 01 00:00:00 EDT 1982
· Phys. Rev. D; (United States)
·
OSTI ID:6804139
Study of D(1285)- and E(1420)-meson production in exclusive interactions by negatively charged pions and kaons at 32. 5 GeV/c
Journal Article
·
Tue May 01 00:00:00 EDT 1984
· Sov. J. Nucl. Phys. (Engl. Transl.); (United States)
·
OSTI ID:6297777
A study of. iota. (. eta. (1440)) and E (f sub 1 (1420)) production in two-photon reaction
Thesis/Dissertation
·
Thu Dec 31 23:00:00 EST 1987
·
OSTI ID:5261731
Related Subjects
645103* -- High Energy Physics-- Particle Interactions & Properties-Experimental-- Strong Interactions & Baryon & Meson Properties
72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS
ANNIHILATION
ANTIKAONS
ANTIKAONS NEUTRAL
ANTIMATTER
ANTIPARTICLES
AXIAL VECTOR MESONS
BARYON-BARYON INTERACTIONS
BASIC INTERACTIONS
BOSONS
DALITZ PLOT
DATA
DIAGRAMS
ELECTROMAGNETIC INTERACTIONS
ELEMENTARY PARTICLES
EXPERIMENTAL DATA
F1-1285 MESONS
F1-1420 MESONS
HADRON-HADRON INTERACTIONS
HADRONS
INFORMATION
INTERACTIONS
KAONS
KAONS NEUTRAL
MASS
MASS SPECTRA
MESONS
NUCLEON-ANTINUCLEON INTERACTIONS
NUMERICAL DATA
PARTICLE INTERACTIONS
PARTICLE PRODUCTION
PARTICLE PROPERTIES
PARTICLE WIDTHS
PIONS
PROTON-ANTIPROTON INTERACTIONS
PSEUDOSCALAR MESONS
SCATTERPLOTS
SPECTRA
SPECTROSCOPY
STRANGE MESONS
STRANGE PARTICLES
72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS
ANNIHILATION
ANTIKAONS
ANTIKAONS NEUTRAL
ANTIMATTER
ANTIPARTICLES
AXIAL VECTOR MESONS
BARYON-BARYON INTERACTIONS
BASIC INTERACTIONS
BOSONS
DALITZ PLOT
DATA
DIAGRAMS
ELECTROMAGNETIC INTERACTIONS
ELEMENTARY PARTICLES
EXPERIMENTAL DATA
F1-1285 MESONS
F1-1420 MESONS
HADRON-HADRON INTERACTIONS
HADRONS
INFORMATION
INTERACTIONS
KAONS
KAONS NEUTRAL
MASS
MASS SPECTRA
MESONS
NUCLEON-ANTINUCLEON INTERACTIONS
NUMERICAL DATA
PARTICLE INTERACTIONS
PARTICLE PRODUCTION
PARTICLE PROPERTIES
PARTICLE WIDTHS
PIONS
PROTON-ANTIPROTON INTERACTIONS
PSEUDOSCALAR MESONS
SCATTERPLOTS
SPECTRA
SPECTROSCOPY
STRANGE MESONS
STRANGE PARTICLES