摘要:

The current status of experiments designed to detect neutrinos emitted by the sun is reviewed. The motivation of these experiments is to reveal new information about the intrinsic properties of neutrinos, for example, non‐zero neutrino mass and mixing. The observation of such nonzero intrinsic properties would be positive evidence of physics beyond the standard model of electroweak interactions.

ISSN:0094-243X    

DOI:10.1063/1.41462

出版商:AIP    

年代:1992

数据来源: AIP

摘要:

The physics of ultra‐relativistic heavy ions is presented, with particular emphasis on the basis concept used in interpreting the data and on the principal problems encountered in this new and rapidly evolving field. A number of selected results from experiments at CERN and BNL are reviewed and compared qualitatively with models based on hadronic scenarios as well as models including quark‐gluon plasma (QGP) formation. No unambiguous evidence for QGP formation has emerged from the data so far, but a number of 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 different observables (pTdistributions, strangeness abundances,J/&psgr; suppression) indicate the existence of an extended and strongly interacting system. The first ‘‘exploratory’’phase of experimentation seems therefore to confirm that ultra‐relativistic heavy‐ion collisions are a promising tool to study the properties of bulk hadronic matter under extreme conditions.

ISSN:0094-243X    

DOI:10.1063/1.41625

出版商:AIP    

年代:1992

数据来源: AIP

ISSN:0094-243X    

DOI:10.1063/1.41465

出版商:AIP    

年代:1992

数据来源: AIP

摘要:

We examine a variety of experiments which probe the chiral symmetry property of the underlying QCD Lagrangian and point out where possible problems exist.

ISSN:0094-243X    

DOI:10.1063/1.41605

出版商:AIP    

年代:1992

数据来源: AIP

摘要:

The nuclear dependence of charm and beauty production is reviewed. Particular emphasis is placed on the new high‐precision data from Fermilab experiment E772. These data are qualitatively compared with current theoretical models of nuclear dependent effects. The relevance of these results toJ/&psgr; suppression studies in relativistic heavy ion collisions is also discussed.

ISSN:0094-243X    

DOI:10.1063/1.41579

出版商:AIP    

年代:1992

数据来源: AIP

摘要:

This paper presents the experimental status of charmonium spectroscopy and describes the technique ofc¯cformation inp¯pannihilations used by the experiment E760 at Fermilab. Results from 1990 data taking are reported.

ISSN:0094-243X    

DOI:10.1063/1.41627

出版商:AIP    

年代:1992

数据来源: AIP

摘要:

Spin physics is playing an increasingly important role in high energy experiments and theory. This review looks at selected topics in high energy spin physics that were discussed at the 9th International Symposium on High Energy Spin Physics at Bonn in September 1990.

ISSN:0094-243X    

DOI:10.1063/1.41536

出版商:AIP    

年代:1992

数据来源: AIP

ISSN:0094-243X    

DOI:10.1063/1.41549

出版商:AIP    

年代:1992

数据来源: AIP

摘要:

The search for processes that are extremely rare or forbidden in the Standard Model is a powerful way to test the model. I focus here on decays that may illuminate the ‘‘generation puzzle,’’ the organization of fundamental fermions into nearly‐independent families.

ISSN:0094-243X    

DOI:10.1063/1.41484

出版商:AIP    

年代:1992

数据来源: AIP

摘要:

We survey the field of strange particle nuclear physics, starting with the spectroscopy of strangenessS=−1 &Lgr; hypernuclei, proceeding to an interpretation of recent data onS=−2 &Lgr;&Lgr; hypernuclear production and decay, and finishing with some speculations on the production of multi‐strange nuclear composites (hypernuclei or ‘‘strangelets’’) in relativistic heavy ion collisions.

ISSN:0094-243X    

DOI:10.1063/1.41485

出版商:AIP    

年代:1992

数据来源: AIP