The anti pp yields anti lambda lambda reaction near threshold
Technical Report
·
OSTI ID:6988116
Measurements of differential and integrated cross sections as well as final state polarizations for the anti p p ..-->.. anti ..lambda.. ..lambda.. reaction are presented. The reaction was studied at two incident antiproton momenta (1476.5 MeV/c and 1507.5 MeV/c) corresponding to total center of mass energies of 15.5 MeV and 26.4 MeV above the reaction threshold. The trajectories of charged decay products of the anti ..lambda.. and ..lambda.. were observed in a multiwire proportional chamber and in two sets of drift chambers. The data were analyzed with a computer program which reconstructed anti p p ..-->.. anti ..lambda.. ..lambda.. ..-->.. anti p ..pi../sup +/p..pi../sup -/ events and performed kinematic fitting. The results are compared to several recent meson exchange calculations, and a one-gluon exchange calculation. The experiment was performed at the Low Energy Antiproton Ring (LEAR) at CERN. The data presented represent the first results of the PS185 collaboration's study of the threshold production of hyperon-antihyperon states.
- Research Organization:
- Carnegie-Mellon Univ., Pittsburgh, PA (USA). Dept. of Physics
- DOE Contract Number:
- AC02-76ER03244
- OSTI ID:
- 6988116
- Report Number(s):
- DOE/ER/03244-133; ON: DE87003382
- Country of Publication:
- United States
- Language:
- English
Similar Records
An investigation of the {anti p}p {yields} {anti {Lambda}} {Lambda} and {anti p}p {yields} {anti {Sigma}}{sup 0} {Lambda} + c.c. reactions near threshold
Investigation of the reaction p p r arrow i. Lambda. Lambda. close to threshold at LEAR
Hyperon-antihyperon production studies near threshold at LEAR
Conference
·
Sat Dec 30 23:00:00 EST 1995
·
OSTI ID:397084
Investigation of the reaction p p r arrow i. Lambda. Lambda. close to threshold at LEAR
Conference
·
Wed Apr 10 00:00:00 EDT 1991
· AIP Conference Proceedings (American Institute of Physics); (United States)
·
OSTI ID:5537491
Hyperon-antihyperon production studies near threshold at LEAR
Conference
·
Mon Dec 31 23:00:00 EST 1984
·
OSTI ID:6835060
Related Subjects
645103* -- High Energy Physics-- Particle Interactions & Properties-Experimental-- Strong Interactions & Baryon & Meson Properties
72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS
ANGULAR DISTRIBUTION
BARYON-BARYON INTERACTIONS
BARYONS
CROSS SECTIONS
DATA
DATA ANALYSIS
DIFFERENTIAL CROSS SECTIONS
DISTRIBUTION
ELEMENTARY PARTICLES
ENERGY RANGE
EXPERIMENTAL DATA
FERMIONS
HADRON-HADRON INTERACTIONS
HADRONS
HYPERONS
INFORMATION
INTERACTIONS
LAMBDA BARYONS
LAMBDA PARTICLES
LEAR
MEASURING INSTRUMENTS
MEV RANGE
MEV RANGE 10-100
MULTIWIRE PROPORTIONAL CHAMBERS
NUCLEON-ANTINUCLEON INTERACTIONS
NUMERICAL DATA
ORIENTATION
PARTICLE INTERACTIONS
PARTICLE PRODUCTION
POLARIZED PRODUCTS
POTENTIALS
PROPORTIONAL COUNTERS
PROTON-ANTIPROTON INTERACTIONS
RADIATION DETECTORS
SPIN ORIENTATION
STORAGE RINGS
STRANGE PARTICLES
TOTAL CROSS SECTIONS
72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS
ANGULAR DISTRIBUTION
BARYON-BARYON INTERACTIONS
BARYONS
CROSS SECTIONS
DATA
DATA ANALYSIS
DIFFERENTIAL CROSS SECTIONS
DISTRIBUTION
ELEMENTARY PARTICLES
ENERGY RANGE
EXPERIMENTAL DATA
FERMIONS
HADRON-HADRON INTERACTIONS
HADRONS
HYPERONS
INFORMATION
INTERACTIONS
LAMBDA BARYONS
LAMBDA PARTICLES
LEAR
MEASURING INSTRUMENTS
MEV RANGE
MEV RANGE 10-100
MULTIWIRE PROPORTIONAL CHAMBERS
NUCLEON-ANTINUCLEON INTERACTIONS
NUMERICAL DATA
ORIENTATION
PARTICLE INTERACTIONS
PARTICLE PRODUCTION
POLARIZED PRODUCTS
POTENTIALS
PROPORTIONAL COUNTERS
PROTON-ANTIPROTON INTERACTIONS
RADIATION DETECTORS
SPIN ORIENTATION
STORAGE RINGS
STRANGE PARTICLES
TOTAL CROSS SECTIONS