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AbstractAbstract
[en] Violations of the Feynman scaling are calculated for the inclusive processes π+A→π +- X in the projectile pion fragmentation region for the target nucle 1H and 14N in the 5x103-5x109 GeV energy range. The inclusive spectra at high energies are approximated by linear combinations of the nuclear inclusive spectra obtained for accelerator energies. The scaling violation is due to an energy dependence (at high E) of the n-pomeron jet production probabilities for nucleus A, as predicted by the supercritical pomeron theory
Original Title
Narushenie fejnmanovskogo skejlinga v πA vzaimodejstviyakh pri sverkhvysokikh ehnergiyakh
Primary Subject
Source
For English translation see the journal Soviet Journal of Nuclear Physics (USA).
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Journal Article
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Country of publication
ANTIMATTER, ANTIMESONS, ANTIPARTICLES, BOSONS, ELEMENTARY PARTICLES, ENERGY RANGE, HADRON REACTIONS, HADRONS, INTERACTIONS, INVARIANCE PRINCIPLES, MATTER, MESON REACTIONS, MESONS, NUCLEAR REACTIONS, PARTICLE INTERACTIONS, PION REACTIONS, PIONS, POSTULATED PARTICLES, PSEUDOSCALAR ANTIMESONS, PSEUDOSCALAR MESONS, TARGETS
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AbstractAbstract
[en] The author discusses a variety of phenomelogical issues related to the possible compositeness of quarks, leptons, Higgs particles and W and Z bosons. Some of the main topics are: Experimental test of compositeness; scales of compositeness; and colored leptons
Primary Subject
Secondary Subject
Source
Greco, M; p. 429-458; ISBN 9971-978-45-8;
; 1985; p. 429-458; World Scientific Pub. Co; Teaneck, NJ (USA); 5. topical workshop on proton-anti-proton collider physics; St. Vincent (Italy); 25 Feb - 1 Mar 1985

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Book
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Conference
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AbstractAbstract
[en] It is assumed that the E8 gauge group of the E8xE8 heterotic superstring can be broken into SO(10). A model to give the mass relation mu/md = mc/ms = mt/mb is presented and Kobayashi-Maskawa mixing is discussed. (orig.)
Primary Subject
Source
CONTRACT EY-76-C-02-1415*00
Record Type
Journal Article
Journal
Zeitschrift fuer Physik. C, Particles and Fields; ISSN 0170-9739;
; CODEN ZPCFD; v. 36(2); p. 189-192

Country of publication
ELEMENTARY PARTICLES, EXTENDED PARTICLE MODEL, FERMIONS, FIELD THEORIES, INTERACTIONS, LEPTONS, LIE GROUPS, MASS, MASSLESS PARTICLES, MATHEMATICAL MODELS, MATHEMATICAL OPERATORS, MATRICES, PARTICLE MODELS, POSTULATED PARTICLES, QUANTUM FIELD THEORY, QUANTUM OPERATORS, SO GROUPS, SYMMETRY, SYMMETRY GROUPS, UNIFIED GAUGE MODELS
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AbstractAbstract
[en] We examine the left-right and azimuthal polarization asymmetries of lepton pairs produced in e+e- and e-e- interactions as probes of new physics resulting from E6 theories. The asymmetries are calculated and compared for the processes e+e- → μ+μ-, e+e- → e+e-, e-e- → e-e-, and e+e- → L+L- where L is either an E6 exotic, mirror, or fourth generation heavy lepton. Our results show that lepton polarization asymmetries can be used to easily distinguish different E6 models among possible new heavy leptons L. (orig.)
Primary Subject
Source
CONTRACT W-7405-ENG-82; GRANT DE-FG05-85ER40200
Record Type
Journal Article
Literature Type
Numerical Data
Journal
Zeitschrift fuer Physik. C, Particles and Fields; ISSN 0170-9739;
; CODEN ZPCFD; v. 36(2); p. 209-215

Country of publication
ANNIHILATION, BHABHA SCATTERING, ELECTRON-ELECTRON INTERACTIONS, ELECTRON-POSITRON INTERACTIONS, ELECTRONS, ENERGY DEPENDENCE, FEYNMAN DIAGRAM, GEV RANGE 100-1000, GEV RANGE 10-100, GRAND UNIFIED THEORY, HEAVY LEPTONS, MOELLER SCATTERING, MUONS MINUS, MUONS PLUS, PAIR PRODUCTION, POLARIZATION-ASYMMETRY RATIO, POLARIZED PRODUCTS, POSITRONS, SPIN ORIENTATION, THEORETICAL DATA
ANTILEPTONS, ANTIMATTER, ANTIPARTICLES, DATA, DIAGRAMS, ELASTIC SCATTERING, ELEMENTARY PARTICLES, ENERGY RANGE, FERMIONS, FIELD THEORIES, GEV RANGE, INFORMATION, INTERACTIONS, LEPTON-LEPTON INTERACTIONS, LEPTONS, MATHEMATICAL MODELS, MATTER, MUONS, NUMERICAL DATA, ORIENTATION, PARTICLE INTERACTIONS, PARTICLE MODELS, PARTICLE PRODUCTION, QUANTUM FIELD THEORY, SCATTERING, UNIFIED GAUGE MODELS
Publication YearPublication Year
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Abbott, L.F.; Farhi, E.; Tye, S.H.H.
Proceedings of the 1982 DPF summer study on elementary particle physics and future facilities
Proceedings of the 1982 DPF summer study on elementary particle physics and future facilities
AbstractAbstract
[en] The authors consider experimental signatures of models with composite W/sup +-/, Z/sup 0/ and composite quarks and leptons. Properties of the composite Z/sup 0/ are discussed in detail. In addition to the W/sup +-/ and Z/sup 0/, many new composite bosons are expected to appear as distinct, narrow resonances in pp, p-bar p, ep and e-bar e interactions. It is possible that the bosons responsible for the weak interactions are composite. In this report the authors consider the experimental signatures of models of this type. Much of the analysis is model independent, however when a specific model is considered they will use the realistic example. In this model the known fermions are correctly described in terms of light bound states, and the weak interactions are the result of residual strong interactions between their constituents. (The gluons and the photon are elementary particles.) The low-energy (E << G/sub F//sup -1/2/) properties of this composite model agree with those of the standard model, but at higher energies new and different phenomena are predicted. The authors discuss how the predictions of the standard model are modified in models with composite W's and Z and analyze the new physics which can be investigated at present and future accelerators. There are three main topics: modification of mass, and production and decay properties for a composite Z/sup 0/; deviations from the standard model in e/sup +/e/sup -/ collisions below the Z mass; and predictions of a rich spectrum of new heavy particles
Primary Subject
Secondary Subject
Source
Donaldson, R.; Gustafson, R.; Paige, F; p. 288-290; 1982; p. 288-290; National Science Foundation; Washington, DC (USA); DPF summer study on elementary particle physics and future facilities (APS); Aspen, CO (USA); 28 Jun - 16 Jul 1982
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Book
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Conference
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AbstractAbstract
[en] This paper gives a presentation of the High Energy Physics research activities in which the experimental group of the National Technical University in Athens is involved. The research activities of the group are concentrated mainly on two experiments: The photoproduction experiment NA14 at the SPS accelerator and the DELPHI experiment at LEP
Primary Subject
Source
Papadopoulou, T.; Tracas, N.D; p. 485-502; ISBN 9971-950-99-5;
; 1982; p. 485-502; World Scientific Pub. Co; Teaneck, NJ (USA); 1. Hellenic school on elementary particle physics; Corfu (Greece); 12-30 Sep 1982

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Book
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Aguilar-Benitez, M.; Colino, N.; Diez-Hedo, F.
LEBC-EHS Collaboration
LEBC-EHS Collaboration
AbstractAbstract
[en] We report on the ΛC properties observed with the LEBC-EHS set-up at CERN SPS with 360 GeV/c π- and 400 GeV/c p beams. The lifetime is (1.2+0.5-0.3)x10-13 s and the mass (2284.7±2.3±0.5) MeV/c2. (orig.)
Primary Subject
Record Type
Journal Article
Literature Type
Numerical Data
Journal
Country of publication
ANTILAMBDA PARTICLES, ANTIPROTONS, EFFECTIVE MASS, EXPERIMENTAL DATA, GEV RANGE 100-1000, INCLUSIVE INTERACTIONS, KAONS MINUS, KAONS NEUTRAL, KAONS PLUS, LAMBDA C PLUS, LIFETIME, MASS SPECTRA, PAIR PRODUCTION, PION MINUS-PROTON INTERACTIONS, PIONS MINUS, PIONS NEUTRAL, PIONS PLUS, PROTON-PROTON INTERACTIONS, PROTONS, WEAK HADRONIC DECAY
ANTIBARYONS, ANTIHYPERONS, ANTIMATTER, ANTIMESONS, ANTINUCLEI, ANTINUCLEONS, ANTIPARTICLES, BARYON-BARYON INTERACTIONS, BARYONS, BOSONS, CATIONS, CHARGED PARTICLES, CHARM PARTICLES, DATA, DECAY, ELEMENTARY PARTICLES, ENERGY RANGE, FERMIONS, GEV RANGE, HADRON-HADRON INTERACTIONS, HADRONS, HYDROGEN IONS, HYDROGEN IONS 1 PLUS, HYPERONS, INFORMATION, INTERACTIONS, IONS, KAONS, MASS, MATTER, MESON-BARYON INTERACTIONS, MESON-NUCLEON INTERACTIONS, MESONS, NUCLEI, NUCLEON-NUCLEON INTERACTIONS, NUCLEONS, NUMERICAL DATA, PARTICLE DECAY, PARTICLE INTERACTIONS, PARTICLE PRODUCTION, PION-NUCLEON INTERACTIONS, PION-PROTON INTERACTIONS, PIONS, PROTON-NUCLEON INTERACTIONS, PSEUDOSCALAR ANTIMESONS, PSEUDOSCALAR MESONS, SPECTRA, STRANGE PARTICLES, WEAK PARTICLE DECAY
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AbstractAbstract
[en] We examine the production and decay of a supersymmetric scalar top t1 at e+e- colliders such as TRISTAN at KEK, the Stanford Linear Collider, and LEP at CERN, based on supersymmetric models with soft breaking. Existing bounds for supersymmetric particles imply that t1 in the energy range of these colliders would be lighter than other scalar quarks and than the top quark. We make a careful study of available t1 decay modes in this scenario. The flavor-changing decay t1→cgamma is found to proceed through the misalignment of the scalar-quark and quark mixing matrices. If the three-body decay t1→bl+nu is kinematically accessible it dominates the two-body decay. The decay t1→bνl+ is even larger due to different chirality structure, but is likely to suffer from a large phase-space suppression. Four-body decays are negligible. The t1 pair production cross section including the γ and Z contribution and the left-right mixing is presented
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Secondary Subject
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Journal Article
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COMPOSITE MODELS, DECAY, ELEMENTARY PARTICLES, FIELD THEORIES, GRAND UNIFIED THEORY, INTERACTIONS, LEPTON-LEPTON INTERACTIONS, MATHEMATICAL MODELS, MATHEMATICAL SPACE, PARTICLE INTERACTIONS, PARTICLE MODELS, POSTULATED PARTICLES, QUANTUM FIELD THEORY, QUARK MODEL, SPACE, SYMMETRY, UNIFIED GAUGE MODELS, UNIFIED-FIELD THEORIES
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AbstractAbstract
[en] Results of inverse beta-decay ν-bare+p → e++n investigation, conducted at the Rovno NPP reactor, are presented. Absolute cross sections and positron spectrum of this reaction are measured at the distance of 18 m from the reactor center for the first time. Relative measurements of cross sections and stectra are also performed at the distances of 18 and 25 m from the reactor center. Positron spectrum from the reverse beta-decay investigated reaction is presented. Limitations on neutrino oscillation parameters are considered. It is stressed, that neigther cross sections and spectra, measured at the distance of 18 m from the reactor center, nor the relative measurements at the distances of 18 and 25 m demonstrate statistically meaningful neutrino oscillation effect manifestation
Original Title
Nejtrinnye ehksperimenty na reaktore Rovenskoj atomnoj ehlektrostantsii
Primary Subject
Source
Scientific session of the Division of general physics and astronomy and the Division of nuclear hysics of the Academy of Sciences of the USSR; Moscow (USSR); 26-27 Mar 1986
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Journal Article
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Conference
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Country of publication
ANTILEPTON-PROTON INTERACTIONS, ANTILEPTONS, ANTIMATTER, ANTINEUTRINOS, ANTIPARTICLES, BARYONS, CROSS SECTIONS, DETECTION, ELECTRON NEUTRINOS, ELEMENTARY PARTICLES, FERMIONS, HADRONS, INTERACTIONS, LEPTON-BARYON INTERACTIONS, LEPTON-HADRON INTERACTIONS, LEPTON-NUCLEON INTERACTIONS, LEPTON-PROTON INTERACTIONS, LEPTONS, MASSLESS PARTICLES, MATTER, NEUTRINO-NUCLEON INTERACTIONS, NEUTRINO-PROTON INTERACTIONS, NEUTRINOS, NOISE, NUCLEONS, PARTICLE INTERACTIONS, RADIATION DETECTION, SPECTRA
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AbstractAbstract
[en] Muon-electron universality in prompt neutrino experiments is verified to a confidence level of only 1.5 x 10/sup -4/. If this result is ascribed to the existence of ν/sub e/ to ν/sub x/ (x not equal to μ) oscillations, a fit to the experimental data yields the results Δm/sup 2/ = (364 +- 33) eV/sup 2/ sin/sup 2/(2α) = 0.52 +- 0.10 with a 85% confidence level. The present data are consistent with the identification of ν/sub x/ with the tau neutrino
Primary Subject
Secondary Subject
Source
Barger, V.; Cline, D; p. 322-328; ISBN 9971-50-069-8;
; 1985; p. 322-328; World Scientific Pub. Co; Teaneck, NJ (USA)

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Book
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