Zobrazeno 1 - 10
of 11
pro vyhledávání: ''
Publikováno v:
Le Journal de Physique Colloques. 51:C6-491
Using a relativistic baryon resonance model constrained by crossing and duality, we study the electromagnetic production of hyperons in kaon photoproduction, γ + p + K+ + Y, and radiative capture, K- + p + γ + Y, for Y = Λ, Σ and Λ(1405). Distin
Autor:
Yu.A. Simonov
Publikováno v:
Le Journal de Physique Colloques. 51:C6-5
A review of NN interaction models is presented starting from perturbative and nonperturbative qq interactions in QCD. Spin structure of baryons and mesons is compared and mechanism of spin-orbit cancellation in excited baryons is explained. Classific
Autor:
R. Rückl
Publikováno v:
Le Journal de Physique Colloques. 46:C2-55
If quarks and leptons are composite on a distance scale A the physics at energies larger than A will provide plenty of evidence for the new level of substructure. However, already at energies below A compositeness should become manifest in deviations
Autor:
M. Davier
Publikováno v:
Le Journal de Physique Colloques. 43:C3-471
Experimental information on weak neutral currents is reviewed. New data are mostly from weak-electromagnetic interference, over a very large q range : from P violation in atomic transitions to ee~ annihilation at q of more than 1000 GeV. Excellent ag
Autor:
P. Kroll
Publikováno v:
Le Journal de Physique Colloques. 46:C2-225
QCD hard scattering model predictions for the vector meson (V) spin density matrix elements in the large pT process γp → VX are discussed. These results can be a test of both the underlying probabilistic scheme of the QCD parton model and of the e
Autor:
Elliott D. Bloom
Publikováno v:
Le Journal de Physique Colloques. 43:C3-407
Recent experimental results on quarkonium and gluonic mesons are presented and discussed. Comparisons with theory are made. Quarkonium predictions seem to agree well with experiment. The question of the experimental verification of gluonic mesons is
Autor:
F.M. Renard
Publikováno v:
Le Journal de Physique Colloques. 46:C2-23
Supersymmetric particles differ from ordinary ones by half a unit of spin. This lead to special asymmetries in their production with polarized beams which should allow a better identification. Typical examples are gluino production in pp collisions,
Autor:
B. Pontecorvo
Publikováno v:
Le Journal de Physique Colloques. 43:C8-221
The talk is quite subjective in character, and is in no way complete. It is not a chapter of history of particle physics. It is a collection of a few short stories related to neutrino physics. Two of these, about Pauli and Fermi, touch on subjects al
Autor:
G. Kalmus
Publikováno v:
Le Journal de Physique Colloques. 43:C3-431
The present experimental situation in τ-lepton, B-meson and charmed particle decays is reviewed. Special attention is paid to new lifetime measurements and in the case of B-meson decays to the rate of b → u compared to b → c. Results are compare
Autor:
Philip G. Ratcliffe
Publikováno v:
Le Journal de Physique Colloques. 46:C2-31
The problem of explaining, within the framework of perturbative QCD, the large observed single transverse-spin asymmetries in, for example, Λ production is reviewed. In particular, recent work has shown that the relevant mass-scale is not that of th