[en] Physics in collision reviews the facts of particle physics by discussing lepton-lepton, quark-quark and lepton-quark interactions. Each section of the book contains theoretical information, experimental findings, tables, diagrams, and the possibilities of further investigation through the use of new detectors and accelerators. Also included within the book is a section on physics and society, acknowledging the study of physics as a part of human activity. The final section concludes with selections which compare and contrast the three generic interactions, in a search for commonality among the three

[en] Experimental results presented at the Leptonic Interactions session of the XIIth RENCONTRE DE MORIOND are reviewed, with emphasis on how they relate to the question of the existence of charm and heavy leptons

[en] Short communication. 4 refs

[en] It is assumed that three lepton families (ν_e,e), (ν_μ, μ), (ν_τ, τ) carry charges, which are sources of electronic, muonic and tauonic massless vector particles (photons), respectively. Various manifestations of these hypothetical photons are discussed. (author)

[en] Scalars with lepton number violating interactions decaying into lepton pairs, as those mediating the see-saw of type II, always include doubly-charged components. If these are observed at the LHC, their electroweak quantum numbers can be determined through their leptonic decays in pair and single production. (authors)

No abstract available

[en] The treatment of inelastic lepton interactions includes the scaling phenomenon, evidence for quark quantum numbers, and new quarks and new currents

[en] Starting by the idea that leptons might play a role in the realm of elementary particles similar to that of the rare gas atoms (which have only weak Van der Waals forces) with respect to the other atoms (which display also strong valence forces), it is speculated on a possible structure of leptons and thus it is proposed a new possible approach to the study of these particles

No abstract available

[en] In the paper practical realization of lepton sector (stable and unstable leptons) with minimum of assumptions, permissible by Lorentz homogenous group is offered. The proposed method allows answering on the question about lepton complete number in the frameworks of made assumptions