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Recent results from the PLUTO and DASP detectors at DORIS

التفاصيل البيبلوغرافية
العنوان: Recent results from the PLUTO and DASP detectors at DORIS
المؤلفون: U. Timm
المصدر: AIP Conference Proceedings.
بيانات النشر: AIP, 1978.
سنة النشر: 1978
مصطلحات موضوعية: QUARK: SUM RULE, J/PSI(3100) --> F(1260) PHOTON, PSI(4100) STRUCTURE: WIDTH, WIDTH [PSI(4100) STRUCTURE], (RHO(765) PI) [PARTIAL WAVE], FINAL STATE [PHOTON], LEPTONIC DECAY [PSI(4100) STRUCTURE], (3PI) [MASS SPECTRUM], F(1260): PRODUCTION, PSI(4100) STRUCTURE: LEPTONIC DECAY, BOUNDARY CONDITION [LIFETIME], PRODUCTION [F(1260)], PSI(4400): WIDTH, ANNIHILATION: ELECTRON POSITRON, DALITZ PLOT [MULTIDIMENSIONAL ANALYSIS], TAU: SEMILEPTONIC DECAY, ELECTRON POSITRON [ANNIHILATION], ELECTROPRODUCTION [PSI(3700)], TAU --> RHO(765) PI NEUTRINO, ANNIHILATION [ELECTRON POSITRON], GLUON [EXCHANGE], LEPTONIC DECAY: PSI(4100) STRUCTURE, Quark, PHOTON [FINAL STATE], TAU: ELECTROPRODUCTION, Nuclear physics, TAU: LIFETIME, PSI(4100) STRUCTURE [WIDTH], MASS SPECTRUM: (PI+ PI-), PHOTON: FINAL STATE, F(1260) [PRODUCTION], COLLIDING BEAMS: ELECTRON POSITRON, ELECTROPRODUCTION [TAU], EXPERIMENTAL RESULTS, Pseudovector, PSI(4400) [LEPTONIC DECAY], PSI(4400) [WIDTH], FINAL STATE: PHOTON, Branching fraction, NEUTRINO: FINAL STATE, PSI(4400): LEPTONIC DECAY, ELECTRON POSITRON [COLLIDING BEAMS], PI: FINAL STATE, ELECTRON POSITRON --> 2TAU, MOMENTUM SPECTRUM [ELECTRON], PSI(3700) [ELECTROPRODUCTION], MAGNETIC DETECTOR: DASP, ENERGY DEPENDENCE [CHANNEL CROSS SECTION], ELECTRON POSITRON: ANNIHILATION, TAU [ELECTROPRODUCTION], Hadron, 3.5-5.2 GEV-CM, PARTIAL WAVE: (RHO(765) PI), J/PSI(3100): BRANCHING RATIO, PLUTO, MASS SPECTRUM: (3PI), TAU: BRANCHING RATIO, GLUON: EXCHANGE, EXCHANGE: GLUON, BRANCHING RATIO [J/PSI(3100)], Physics, Quantum chromodynamics, WIDTH [PSI(4400)], COLLIDING BEAMS [ELECTRON POSITRON], RADIATIVE DECAY [J/PSI(3100)], ELECTRON POSITRON: COLLIDING BEAMS, FINAL STATE [NEUTRINO], SUM RULE [QUARK], LEPTONIC DECAY: PSI(4400), NEUTRINO [FINAL STATE], MULTIDIMENSIONAL ANALYSIS: DALITZ PLOT, Sum rule in quantum mechanics, EXCHANGE [GLUON], WIDTH: PSI(4400), BRANCHING RATIO [TAU], J/PSI(3100): RADIATIVE DECAY, ELECTRON: MOMENTUM SPECTRUM, Particle physics, (PI+ PI-) [MASS SPECTRUM], PI [FINAL STATE], PSI(3700): ELECTROPRODUCTION, LIFETIME: BOUNDARY CONDITION, LIFETIME [TAU], CHANNEL CROSS SECTION: ENERGY DEPENDENCE, PRODUCTION: F(1260), FINAL STATE: PI, DASP [MAGNETIC DETECTOR], ELECTROPRODUCTION: TAU, PSI(4100) STRUCTURE [LEPTONIC DECAY], ANGULAR DISTRIBUTION: (F(1260) PHOTON), DESY DORIS STOR, ELECTROPRODUCTION: PSI(3700), SEMILEPTONIC DECAY [TAU], High Energy Physics::Phenomenology, LEPTONIC DECAY [PSI(4400)], Gluon, FINAL STATE: NEUTRINO, (F(1260) PHOTON) [ANGULAR DISTRIBUTION], FINAL STATE [PI], WIDTH: PSI(4100) STRUCTURE, High Energy Physics::Experiment, Lepton
الوصف: 21 pp. (1978).
Decays of the heavy lepton τ have now been observed in e+e− ‐ collisions at the energy of the ψ′‐resonace, which results in an improved mass determination Mτ=1.807±0.020 GeV. For the τ‐life‐time a new upper limit of ττ?3.5⋅10−12 sec. is given. The evidence for the decay τ→νπρ has been strengthened, and the πρ‐system is found to be in an S‐wave state with JP=1+, proving the axial vector component in the leptonic coupling of the τ to hadrons. The branching ratio is given with BR(τ−→νπ−ρ0) =0.050±0.015. The total hadronic cross section agrees within errors with the quarksum rule including QCD‐corrections. The production and decay distributions of the decay J/ψ→f0γ have been measured and found to agree well with a QCD calculation based on the exchange of two gluons.
تدمد: 0094-243X
الوصول الحر: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::b24ca14b3a3d092d28d18cad8fc09646Test
https://doi.org/10.1063/1.31398Test
حقوق: OPEN
رقم الانضمام: edsair.doi.dedup.....b24ca14b3a3d092d28d18cad8fc09646
قاعدة البيانات: OpenAIRE
الوصف
تدمد:0094243X