Phi meson: precise measurement of its mass and observation of the. omega. --phi interference

Journal Article · Sat Apr 01 04:00:00 EST 1978 · Sov. J. Nucl. Phys. (Engl. Transl.); (United States)

OSTI ID:6445730

Bukin, A D; Kurdadze, L M; Serednyakov, S I; Sidorov, V A; Shrinskii, A N; Shatunov, Y M; Shvarts, B A; Eidel'man, S I

Excitation curves for the phi resonance have been measured in the reactions e/sup +/e/sup -/..-->..K/sup 0//sub S/K/sup 0//sub L/ and e/sup +/e/sup -/..--> pi../sup +/..pi../sup -/..pi../sup 0/ at the electron-positron storage ring VEPP--2M. The total luminosity integral accumulated in the experiment is 42.4 nb/sup -1/. Absolute calibration of the beam energy in the storage ring was carried out during the experiment. The calibration accuracy is 10/sup -4/. The following values of the resonance parameters are obtained: m/sub phi/=1019.52 +- 0.13 MeV, GAMMA/sub phi/=4.36 +- 0.19 MeV, sigma (K/sub S/K/sub L/) =1.40 +- 0.09 ..mu..b, and sigma (3..pi..) =0.79 +- 0.09 ..mu..b. The relative phase of the ..omega..--phi interference, which is sensitive to the model of SU(3) symmetry breaking, is determined from the shift of the resonance peak in the phi..-->..3..pi.. channel. The experimental data support the mass-mixing model.

• Research Organization: Institute of Nuclear Physics, Siberian Division, USSR Academy of Sciences
• OSTI ID: 6445730
• Journal Information: Sov. J. Nucl. Phys. (Engl. Transl.); (United States), Journal Name: Sov. J. Nucl. Phys. (Engl. Transl.); (United States) Vol. 27:4; ISSN SJNCA
• Country of Publication: United States
• Language: English

Related Subjects

645101* -- High Energy Physics-- Particle Interactions & Properties-Experimental-- Electromagnetic Interactions & Properties
72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS
ANNIHILATION
BASIC INTERACTIONS
BOSONS
CROSS SECTIONS
DATA
DATA FORMS
DECAY
ELECTROMAGNETIC INTERACTIONS
ELECTRON-POSITRON INTERACTIONS
ELEMENTARY PARTICLES
ENERGY RANGE
EXPERIMENTAL DATA
GEV RANGE
GEV RANGE 01-10
GRAPHS
HADRONIC PARTICLE DECAY
HADRONS
INFORMATION
INTERACTIONS
INTERFERENCE
KAONS
KAONS NEUTRAL
KAONS NEUTRAL LONG-LIVED
KAONS NEUTRAL SHORT-LIVED
LEPTON-LEPTON INTERACTIONS
LIE GROUPS
MASS
MEASURING INSTRUMENTS
MESON RESONANCES
MESONS
NUMERICAL DATA
OMEGA-784 RESONANCES
PARTICLE DECAY
PARTICLE INTERACTIONS
PARTICLE PROPERTIES
PARTICLE WIDTHS
PHI-1019 RESONANCES
PIONS
PIONS MINUS
PIONS NEUTRAL
PIONS PLUS
PSEUDOSCALAR MESONS
RADIATION DETECTORS
RESONANCE PARTICLES
SCINTILLATION COUNTERS
STRANGE PARTICLES
SU GROUPS
SU-3 GROUPS
SYMMETRY BREAKING
SYMMETRY GROUPS
VECTOR MESONS