摘要:

We review the new results presented at the XXVI International Conference on High Energy Physics on the topics of weak decays, rare decays, mixing, and CP violation.

ISSN:0094-243X    

DOI:10.1063/1.43446

出版商:AIP    

年代:1992

数据来源: AIP

摘要:

In this talk I review and comment upon recent developments in hadron spectroscopy and structure. The talk is organized into three main sections dealing with heavy quarkonia (QQ¯), hadrons containing a single heavy quark (Qq¯andQqq), and hadrons containing only light quarks and glue, although I will emphasize a surprising unity of the phenomena characterizing these systems.

ISSN:0094-243X    

DOI:10.1063/1.43502

出版商:AIP    

年代:1992

数据来源: AIP

摘要:

Recent measurements of various charged current and neutral current processes are presented and compared with the prediction of the Standard Model of the Electroweak Interaction. No discrepancy was found in the experiments’ precision which is often higher than 0.5%. A Standard Model fit to the data allows an indirect determination of the top massmtop=145±25GeV.

ISSN:0094-243X    

DOI:10.1063/1.43381

出版商:AIP    

年代:1992

数据来源: AIP

摘要:

Recent theoretical developments and experimental results on tests of QCD in deep inelastic scattering, in e+e−annihilation and in hadron collision processes are reviewed. The topics covered are structure functions, jet physics, prompt photon production, soft gluon coherence effects and a summary of measurements of &agr;s.

ISSN:0094-243X    

DOI:10.1063/1.43314

出版商:AIP    

年代:1992

数据来源: AIP

摘要:

Recent results on the production dynamics of bottom from the Collider Detector Facility, E653, and E672 at Fermilab are reviewed and compared to previous results and theory. Agreement with theory is reasonable but the possible origins of the differences that do exist may lie in higher order corrections or possibly the shape of the gluon distribution. New results on the A‐dependence of charm are summarized. Recent results are converging towards an &agr; parameter of 1, independent ofxF. Results on inclusive charm production from Fermilab E769 and E653 and CERN WA82 are reviewed. Recent results onD−D¯ correlations in photoproduction from E687 at Fermilab are reported. Many new results on charmed baryon states from CLEO, E687, ARGUS, and Serpukhov BIS‐2 are reviewed. This is an area where rapid progress is now occurring. Results on theD* branching fractions,Dsbranching fractions, doubly Cabibbo suppressed decays, and the ratioD°→KK/D°→&pgr;&pgr; are covered.

ISSN:0094-243X    

DOI:10.1063/1.43485

出版商:AIP    

年代:1992

数据来源: AIP

摘要:

We review the current status of experimental knowledge about neutrinos derived from kinematic mass measurements, neutrino oscillation searches at reactors and accelerators, solar neutrinos, atmospheric neutrinos, and single and double beta decay. The solar neutrino results yield fairly strong and consistent indications that neutrino oscillations are occurring. Other evidence for new physics is less consistent and convincing.

ISSN:0094-243X    

DOI:10.1063/1.43491

出版商:AIP    

年代:1992

数据来源: AIP

摘要:

I review recent developments in cosmology and astrophysics relevant to particle physics, focussing on the following questions: What’s new in 1992?, What have we learned since the last ICHEP meeting in 1990? and, What are the prospects for the future? Among the topics explicitly discussed are: COBE, Large Scale Structure, and Dark Matter, Big Bang Nucleosynthesis; the Solar Neutrino Problem; and High Energy Gamma Ray Physics.

ISSN:0094-243X    

DOI:10.1063/1.43492

出版商:AIP    

年代:1992

数据来源: AIP

摘要:

Recent work on effective field theory is reviewed, focussing on chiral perturbation theory. The principle of the method is outlined. Some of the results obtained with it and some of the problems under investigation are discussed.

ISSN:0094-243X    

DOI:10.1063/1.43493

出版商:AIP    

年代:1992

数据来源: AIP

摘要:

The physics of ultrarelativistic heavy‐ion collisions is presented with particular emphasis on the basic concepts used in interpreting the data and some principal problems encountered in this new and rapidly evolving field. A number of selected recent and older results from experiments at CERN and BNL were reviewed. No unambiguous evidence for Quark‐Gluon Plasma formation has emerged from the data so far, but some large and significant effects have been observed which clearly show that nucleus‐nucleus collisions cannot be described as a straightforward superposition of independent nucleon‐nucleon reactions. Results from a number of independent observables (pt‐distributions, strangeness abundances, J/&PSgr; suppression, particle interferometry) indicate the existence of an extended and strongly interacting system. The first ‘exploratory’ phase of experimentation seems therefore to confirm that ultrarelativistic heavy‐ion collisions are a promising tool to study the properties of bulk hadronic matter under extreme conditions.

ISSN:0094-243X    

DOI:10.1063/1.43494

出版商:AIP    

年代:1992

数据来源: AIP

摘要:

We review some of the recent developments in Quantum Field Theory and String Theory. A thorough account of these subjects is virtually impossible, and I have therefore chosen a list of topics which should provide a reasonable cross section.

ISSN:0094-243X    

DOI:10.1063/1.43495

出版商:AIP    

年代:1992

数据来源: AIP