Task A, High Energy Physics Program experiment and theory: Task B, High Energy Physics Program numerical simulation of quantum field theories. [Particle Physics Group, Physics Dept. , The Florida State Univ. , Tallahassee]

Technical Report · Wed Jan 01 04:00:00 EST 1992

DOI:https://doi.org/10.2172/6851536· OSTI ID:6851536

The effort of the experimental group has been concentrated on the CERN ALEPH and FERMILAB D0 collider experiments and completion of two fixed target experiments. The BNL fixed target experiment 771 took the world's largest sample of D(1285) and E/iota(1420) events, using pion, kaon and antiproton beams. Observing the following resonances: 0[sup [minus plus]] [1280], 1[sup [plus][plus]] [1280], 0[sup [minus plus]] [1420], 0[sup [minus plus]] [1470], 1[sup [plus minus]] [1415]. The Fermilab fixed target experiment E711, dihadron production in pN interactions at 800 GeV, completed data reduction and analysis. The atomic weight dependence, when parameterized as [sigma](A) = [sigma][sub o]A[sup [alpha]], yielded a value of [alpha] = 1.043 [plus minus] 0.011 [plus minus] .012. The cross section per nucleon and angular distributions was also measured as a function of two particle mass and agrees very well with QCD calculations. The D0 Fermilab Collider Experiment E740 began its first data taking run in April 1992. The CERN collider experiment ALEPH at LEP is presently taking more data. The Z mass and width, the couplings to the upper and lower components of the hadronic isospin doublet, forward-backward asymmetries of hadronic events, and measurements of the fragmentation process have been made. The effort of detector development for the SSC has substantially increased with particular emphasis on scintillators, both in fibers and plates. Work has continued on higher-order QCD calculations using the Monte Carlo technique developed previously. This year results for WW, ZZ, WZ, and [sub [gamma][gamma]] production have been published. A method for incorporating parton showering in such calculations was developed and applied to W production. The multicanonical Monte Carlo algorithm has stood up to the promises anticipated; it was used in multicanonical simulations of first-order phase transitions and for spin glass systems.

• Research Organization: Florida State Univ., Tallahassee, FL (United States). Dept. of Physics
• Sponsoring Organization: DOE; USDOE, Washington, DC (United States)
• DOE Contract Number: FG05-87ER40319
• OSTI ID: 6851536
• Report Number(s): DOE/ER/40319-T2; ON: DE93004641
• Country of Publication: United States
• Language: English

Related Subjects

662000* -- Physics of Elementary Particles & Fields-- (1992-)
72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS
AXIAL VECTOR MESONS
BARYON-BARYON INTERACTIONS
BOSONS
COMPUTERIZED SIMULATION
DOCUMENT TYPES
ELEMENTARY PARTICLES
ENERGY RANGE
ETA-1440 MESONS
F1-1285 MESONS
F1-1420 MESONS
FIELD THEORIES
GEV RANGE
GEV RANGE 100-1000
HADRON-HADRON INTERACTIONS
HADRONS
HIGH ENERGY PHYSICS
INTERACTIONS
INTERMEDIATE BOSONS
INTERMEDIATE VECTOR BOSONS
MESONS
NUCLEON-NUCLEON INTERACTIONS
PARTICLE INTERACTIONS
PHYSICS
PROGRESS REPORT
PROTON-NUCLEON INTERACTIONS
PSEUDOSCALAR MESONS
QUANTUM CHROMODYNAMICS
QUANTUM FIELD THEORY
RESEARCH PROGRAMS
SIMULATION