摘要:

Tests of the electroweak theory are becoming precise enough to shed light on new physics which contributes to radiative corrections. It is shown how the top quark and Higgs masses and other possible features of new physics are sensitive to each experiment and a framework is given for judging the potential impact of new tests. Remarks are made on present and future constraints on quark mixing parameters and on gauge couplings ofWbosons.

ISSN:0094-243X    

DOI:10.1063/1.41486

出版商:AIP    

年代:1992

数据来源: AIP

摘要:

Three of the simplest nuclear reactions−1) electron‐deuteron elastic scattering, 2) electro‐disintegration of the deuteron near threshold and at high momentum transfer, and 3) photodisintegration of the deuteron at high energy−were believed to have unique signatures for QCD effect in nuclei. The progress in the past few years with regard to these reactions will be traced and the results will be compared with recent theoretical predictions.

ISSN:0094-243X    

DOI:10.1063/1.41487

出版商:AIP    

年代:1992

数据来源: AIP

摘要:

The paper summarizes recent activities in low energy muon physics with a special emphasis on 1) &mgr;SR studies on highTcsuperconductor, 2) thermal muonium in vacuum, 3) muon catalyzed fusion and 4) repolarization of the negative muon. Also, a status of the ultra‐slow muon facility as well as perspective for a new accelerator plan is presented.

ISSN:0094-243X    

DOI:10.1063/1.41488

出版商:AIP    

年代:1992

数据来源: AIP

摘要:

I summarize the basic features of numerical ‘‘simulations’’ of QCD, and the advantages and limitations of this approach. Then I give an overview of the computations that are done, and show a small selection of recent results.

ISSN:0094-243X    

DOI:10.1063/1.41489

出版商:AIP    

年代:1992

数据来源: AIP

摘要:

Jet quenching in high energy nuclear collisions is shown to provide new information on the energy loss mechanisms in dense matter near the quark‐gluon plasma transition. In addition it is shown thatAdependence of the inclusivepTspectra inp+Aprovides novel constraints on gluon shadowing in nuclei.

ISSN:0094-243X    

DOI:10.1063/1.41490

出版商:AIP    

年代:1992

数据来源: AIP

摘要:

Concerns have been raised over the possibility that weak 60 Hz electromagnetic fields are carcinogenic and leukegenic. An examination of the physical interaction of such fields with the body shows that on the cell level such interactions are much smaller than thermal noise and, hence, cannot generate significant biological effects.

ISSN:0094-243X    

DOI:10.1063/1.41491

出版商:AIP    

年代:1992

数据来源: AIP

摘要:

A review is given of the experimental measurements of the elastic electric and magnetic form factors of the proton and neutron. Prospects for ongoing and future experiments are examined. Special emphasis is given to a recent SLAC experiment which approximately doubled theQ2range over which the proton and neutron form factors have been separated.

ISSN:0094-243X    

DOI:10.1063/1.41492

出版商:AIP    

年代:1992

数据来源: AIP

摘要:

I review and update a previous analysis of non‐quark‐model mesons. I find that there are several interesting states that cannot be accounted for by the quark model. These including thef0(1590), most likely a glueball; the &eegr;(1460),f1(1420) andf2(1720) which are all prominent inJ/&psgr; radiative decays, but which have not been classified; and the exoticM(1406), which, with the &rgr;(1480), may be aP‐wave 4‐quark state.

ISSN:0094-243X    

DOI:10.1063/1.41493

出版商:AIP    

年代:1992

数据来源: AIP

摘要:

Recent results from the Asterix and Crystal Barrel experiments at CERN/LEAR are reviewed. Two new isoscalar mesons have been observed in the 1500–1600 MeV mass range. Proton‐antiproton annihilation into two neutral mesons has been investigated. The production of &fgr; mesons is discussed in the context of a possible violation of the OZI rule.

ISSN:0094-243X    

DOI:10.1063/1.41494

出版商:AIP    

年代:1992

数据来源: AIP

摘要:

Some of the prospects for physics at a polarized hadron collider are summarized, with reference to a proposal for polarized proton‐proton collisions at RHIC. The connections between the spin‐dependent parton densities and the chiral structure of the proton are emphasized.

ISSN:0094-243X    

DOI:10.1063/1.41495

出版商:AIP    

年代:1992

数据来源: AIP