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31 results on '"THRUST [JET]"'

1. Reconstruction of $Zh \to l^+ l^- W^+ W^-$ and $Zh \to q \bar q W^+ W^-$ final states with linear $e^+ e^-$ collider

Author

Raspiareza, Alexei

Subjects
counters and detectors: resolution, Higgs particle: decay, +W%2B+W%22">Higgs particle --> W+ W, +Higgs+particle+Z0%22">electron positron --> Higgs particle Z0, annihilation [electron positron], electron positron: annihilation, W: pair production, mass spectrum, counters and detectors: efficiency, +quark+antiquark%22">Z0 --> quark antiquark, associated production [Z0], Z0: hadronic decay, channel cross section, efficiency [counters and detectors], 350 GeV-cms, hadronic decay [Z0], +lepton+antilepton%22">Z0 --> lepton antilepton, background, decay [Higgs particle], mass [Higgs particle], Monte Carlo [numerical calculations], leptonic decay [Z0], Z0: associated production, electroproduction [Higgs particle], Higgs particle: mass, pair production [W], resolution [counters and detectors], kinematics, Z0: leptonic decay, Higgs particle: electroproduction, numerical calculations: Monte Carlo, thrust [jet], jet: thrust
Abstract

16 pp. (2001).

Published
2001
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2. Study of scalar top quarks in the neutralino and chargino decay channel at a future $e^+e^-$ linear collider

Author

Keranen, R., Sopczak, A., Nowak, H., and Berggren, M.

Subjects
polarized beam [electron], electron: polarized beam, squark: mass, energy spectrum, chargino, annihilation [electron positron], electron positron: annihilation, mixing angle [squark], counters and detectors: efficiency, neutralino, 500 GeV-cms, ddc:530, squark: mixing angle, efficiency [counters and detectors], background, sparticle: electroproduction, Monte Carlo [numerical calculations], mass [squark], decay modes [stau], stau: decay modes, electroproduction [sparticle], transverse momentum: spectrum, supersymmetry, spectrum [transverse momentum], numerical calculations: Monte Carlo, thrust [jet], jet: thrust
Abstract

13 pp. (2000).

Published
2000

3. A Direct measurement of $\tan(\beta)$: $e^+ e^- \to b \bar{b}A$ at a future $e^+ e^-$ linear collider

Author

Berggren, M., Keranen, R., and Sopczak, A.

Subjects
associated production [Higgs particle], multiple production [jet], Sitges 1999/04/28 [talk], bottom: pair production, annihilation [electron positron], (4jet) [final state], talk: Sitges 1999/04/28, electron positron: annihilation, statistical analysis, jet: multiple production, 500 GeV-cms, ddc:530, numerical calculations, background, Higgs particle: associated production, final state: (4jet), mass [Higgs particle], pair production [bottom], Higgs particle: mass, pseudoscalar [Higgs particle], Higgs particle: pseudoscalar, Higgs particle: hadronic decay, hadronic decay [Higgs particle], supersymmetry, thrust [jet], jet: thrust
Abstract

5 pp. (2000)., The experimental sensitivity of the reaction $e^+ e^- \to b \bar{b}\to b\bar{b}A$has been studied with a full-statistics background simulation for sqrt(s) = 500 GeV and L = 500 fb$^-1$. The simulation is based on a fast and realistic simulation of a TESLA detector. For the first time this reaction has been analysed for a future linear collider and we show that a signal could be observed. A significant signal over background is achieved by the application of an Iterative Discriminant Analysis (IDA). For a signal production cross section of only 2 fb, which is expected for a Higgs boson mass of 100 GeV and $\tan(\beta) = 50$, we achieve 100 signal over 100 background events, and obtain for a $\tan(\beta)$ measurement: $\Delta(\tan(\beta)) / \tan(\beta) = 0.07$. This measurement requires a high-luminosity future collider as proposed in the TESLA project.

Published
2000

4. Six jet production at $e^+ e^-$ linear colliders

Author

Moretti, Massimiliano

Subjects
perturbation theory [quantum chromodynamics], channel cross section, multiple production [jet], final state: (6jet), (6jet) [final state], annihilation [electron positron], electron positron: annihilation, Lund 1998/06/28 [talk], jet: sphericity, mass spectrum, talk: Lund 1998/06/28, jet: multiple production, 500 GeV-cms, sphericity [jet], tree approximation, quantum chromodynamics: perturbation theory, numerical calculations, thrust [jet], jet: thrust
Abstract

6 pp. (1999)., The calculation of the tree-level QCD processes $e^+e^- \to qqgggg$, $qqqqgg$ and $qqqqqq$ has recently been accomplished. We highlight here the relevance of such reactions for some of the physics at future electron-positron linear accelerators.

Published
1999
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5. CP violation studies in b decays at the TESLA Z factory

Author

Hawkings, Richard

Subjects
positron: polarized beam, polarized beam [electron], electroproduction [Z0], electron: polarized beam, hadronic decay [B/s], B: hadronic decay, DESY TESLA Linac, bottom: pair production, annihilation [electron positron], electron positron: annihilation, violation [CP], mass spectrum, CP: violation, Z0: hadronic decay, hadronic decay [B], hadronic decay [Z0], two-particle [final state], background, differential cross section: angular dependence, Monte Carlo [numerical calculations], approx. 91 GeV-cms, pair production [bottom], angular dependence [differential cross section], B/s: hadronic decay, polarized beam [positron], CKM matrix: unitarity, final state: two-particle, numerical calculations: Monte Carlo, thrust [jet], unitarity [CKM matrix], Z0: electroproduction, jet: thrust
Abstract

14 pp. (1999).

Published
1999

6. A Note on the QCD corrections to forward - backward asymmetries of heavy quark jets in $Z$ decays

Author

Djouadi, A., Lampe, B., and Zerwas, P. M.

Subjects
annihilation: electron positron, angular distribution: asymmetry, electroproduction [Z0], correction [quantum chromodynamics], annihilation [electron positron], electron positron: annihilation, quantum chromodynamics: correction, Z0: nonleptonic decay, nonleptonic decay: Z0, quark [pair production], ddc:530, nonleptonic decay [Z0], heavy quark, numerical calculations, electroproduction: Z0, electron positron [annihilation], Z0 [electroproduction], quark: pair production, pair production: quark, asymmetry [angular distribution], pair production [quark], Z0 [nonleptonic decay], angular distribution [asymmetry], asymmetry: angular distribution, thrust [jet], Z0: electroproduction, jet: thrust
Abstract

11 pp. (1995)., The measurement of the forward-backward asymmetries of heavy quarks provides one of the most precise determinations of $\sin~2\theta_W$ in $Z$ decays. We discuss in detail the one--loop QCD radiative corrections to these asymmetries. Results are given for single heavy--quark jet asymmetries and asymmetries of the thrust axis, as well as for heavy--quark two--jet final states.}

Published
1995

7. Studies of multihadronic final states in photon-photon interactions

Author

Behrend, H. J., Criegee, L., Field, J. H., Franke, G., Jung, H., Meyer, J., Podobrin, O., Schroder, V., Winter, G. G., Bussey, P. J., Campbell, A. J., Hendry, D., Lumsdon, S., Skillicorn, I. O., Ahme, J., Blobel, V., Feindt, M., Fenner, H., Harjes, J., Kohne, J., Peters, J. H., Spitzer, H., Weihrich, T., Apel, W. D., Engler, J., Flugge, G., Fries, D. C., Fuster, J., Gamerdinger, K., Grosse-Wiesmann, P., Kuster, H., Muller, H., Ranitzsch, K. H., Schneider, H., de Boer, W., Buschhorn, G., Grindhammer, Guenter, Gunderson, B., Kiesling, Christian M., Kotthaus, R., Kroha, H., Luers, D., Oberlach, H., Schacht, P., Scholz, S., Wiedenmann, W., Davier, M., Grivaz, J. F., Haissinski, J., Journe, V., Le Diberder, F., Veillet, J. J., Blohm, K., George, R., Goldberg, M., Hamon, O., Kapusta, Frederic, Poggioli, L., Rivoal, M., d'Agostini, G., Ferrarotto, F., Iacovacci, M., Shooshtari, G., Stella, B., Cozzika, G., Ducros, Y., Alexander, G., Beck, A., Bella, G., Grunhaus, J., Klatchko, A., Levy, A., Milstene, C., and CELLO Collaboration

Subjects
two-photon [exchange], fragmentation [model], vector dominance, momentum transfer [cross section], jet [electroproduction], interaction [photon photon], photon photon: interaction, jet: electroproduction, cross section: momentum transfer, hadron: multiple production, spectrum: transverse momentum, ddc:530, angular distribution, electron positron [colliding beams], hadron [multiple production], multiple production [hadron], electroproduction [jet], exchange: two-photon, photon photon [interaction], quark model parton, electron positron: colliding beams, transverse momentum [spectrum], ((4, electroproduction: jet, interaction: photon photon, multiple production: hadron, transverse momentum: spectrum, colliding beams: electron positron, model: fragmentation, DESY PETRA Stor, colliding beams [electron positron], two-photon: exchange, CELLO, spectrum [transverse momentum], thrust [jet], jet: thrust, exchange [two-photon], experimental results
Abstract

24 pp. (1991)., We have measured the cross section and $Q^2$-dependence of the reaction γγ→ multihadrons, using the CELLO detector at DESY, for visible final-state masses between 4 and 9 GeV. The data are well fitted by an incoherent sum of Generalised Vector Meson Dominance and Quark Parton Model terms, but at lowQ2 require the addition of a third component which resembles the QPM but is less two-jet-like. With and without this term, the GVDM cross section atQ2=0 is found to be 200±20 and 250±25 nb, respectively.

Published
1991

8. HIGH-ENERGY e+ e- INTERACTIONS

Author

Wolf, Guenter

Subjects
ELECTROPRODUCTION: LAMBDA, VALIDITY TEST [QUANTUM CHROMODYNAMICS], EXCITED ELECTRON: MASS, DIFFERENTIAL CROSS SECTION: X-DEPENDENCE, GLUON: BREMSSTRAHLUNG, LEPTON [ELECTROPRODUCTION], PHOTON: PAIR PRODUCTION, +MUON%2B+MUON%22">ELECTRON POSITRON --> MUON+ MUON, MASS [LOWER LIMIT], DESY PETRA STOR, SEARCH FOR [HEAVY LEPTON], EXCITED MUON: MASS, LOWER LIMIT [MASS], ANGULAR DEPENDENCE [DIFFERENTIAL CROSS SECTION], SPECTRUM [INCLUSIVE REACTION], QUANTUM ELECTRODYNAMICS: VALIDITY TEST, DIFFERENTIAL CROSS SECTION: SCALING, ENERGY DEPENDENCE: TOTAL CROSS SECTION, TAU: PAIR PRODUCTION, MOMENTUM: DIFFERENTIAL CROSS SECTION, K: ELECTROPRODUCTION, EXCITED ELECTRON [MASS], SUPERSYMMETRY [POSTULATED PARTICLE], LEPTON: ELECTROPRODUCTION, ENERGY LOSS: SPECTRUM, CHARGED PARTICLE: MULTIPLICITY, TOTAL CROSS SECTION: ENERGY DEPENDENCE, ELECTROPRODUCTION [K], ENERGY DEPENDENCE [TOTAL CROSS SECTION], PAIR PRODUCTION: TAU, PI: ELECTROPRODUCTION, ANNIHILATION: ELECTRON POSITRON, PAIR PRODUCTION [TAU], JET: SPHERICITY, RAPIDITY [SPECTRUM], SPHERICITY [JET], FINAL STATE [(3JET)], DALITZ PLOT [MULTIDIMENSIONAL ANALYSIS], ELECTRON POSITRON [ELASTIC SCATTERING], +ANTI-K0+ANYTHING%22">ELECTRON POSITRON --> ANTI-K0 ANYTHING, ELECTRON POSITRON [ANNIHILATION], ELECTROPRODUCTION: P, FRAGMENTATION [GLUON], ELECTROPRODUCTION: K, ELASTIC SCATTERING [ELECTRON POSITRON], ANNIHILATION [ELECTRON POSITRON], EXCHANGE [ONE-PHOTON], MASS: EXCITED MUON, QUARK: FRAGMENTATION, X-DEPENDENCE [DIFFERENTIAL CROSS SECTION], TRANSVERSE MOMENTUM: SPECTRUM, MULTIPLE PRODUCTION [HADRON], EXCITED MUON [MASS], NEUTRAL CURRENT, ELECTROPRODUCTION [PI], EXCITED LEPTON [SEARCH FOR], X-DEPENDENCE: DIFFERENTIAL CROSS SECTION, TAU: LIFETIME, (3JET) [FINAL STATE], DIFFERENTIAL CROSS SECTION: ASYMMETRY, MASS SPECTRUM: (MUON PHOTON), COUPLING CONSTANT: STRONG INTERACTION, LAMBDA [ELECTROPRODUCTION], ASYMMETRY: DIFFERENTIAL CROSS SECTION, STRONG INTERACTION [COUPLING CONSTANT], COLLIDING BEAMS: ELECTRON POSITRON, SCALING [DIFFERENTIAL CROSS SECTION], +K0+ANYTHING%22">ELECTRON POSITRON --> K0 ANYTHING, GLUON: FRAGMENTATION, +LAMBDA+ANYTHING%22">ELECTRON POSITRON --> LAMBDA ANYTHING, DIFFERENTIAL CROSS SECTION [SCALING], JET: ELECTROPRODUCTION, ONE-PHOTON: EXCHANGE, DIFFERENTIAL CROSS SECTION [X-DEPENDENCE], (MUON PHOTON): MASS SPECTRUM, SPECTRUM [RAPIDITY], INCLUSIVE REACTION: SPECTRUM, VALIDITY TEST [QUANTUM ELECTRODYNAMICS], SPECTRUM: INCLUSIVE REACTION, ELECTRON POSITRON [COLLIDING BEAMS], EXCHANGE: ONE-PHOTON, +TAU%2B+TAU%22">ELECTRON POSITRON --> TAU+ TAU, DIFFERENTIAL CROSS SECTION: ANGULAR DEPENDENCE, STRONG INTERACTION: COUPLING CONSTANT, MUON [PAIR PRODUCTION], DIFFERENTIAL CROSS SECTION [ASYMMETRY], LAMBDA: ELECTROPRODUCTION, RAPIDITY: SPECTRUM, +ANTILAMBDA+ANYTHING%22">ELECTRON POSITRON --> ANTILAMBDA ANYTHING, P [ELECTROPRODUCTION], ENERGY DEPENDENCE [CHANNEL CROSS SECTION], ELECTRON POSITRON: ANNIHILATION, LOWER LIMIT: MASS, PAIR PRODUCTION [MUON], ENERGY LOSS [SPECTRUM], MASS: EXCITED ELECTRON, FRAGMENTATION [QUARK], EXCHANGE: Z0, DIFFERENTIAL CROSS SECTION [MOMENTUM], EXPERIMENTAL RESULTS [REVIEW], BIBLIOGRAPHY, (3JET): FINAL STATE, ELECTROPRODUCTION [P], MULTIPLE PRODUCTION: HADRON, ELECTROPRODUCTION: PI, DIFFERENTIAL CROSS SECTION: MOMENTUM, ONE-PHOTON [EXCHANGE], +2PHOTON%22">ELECTRON POSITRON --> 2PHOTON, INCLUSIVE REACTION [SPECTRUM], PI [ELECTROPRODUCTION], QUARK: SEARCH FOR, GLUON [SPIN], THRUST [JET], ELECTROPRODUCTION [LAMBDA], JET: THRUST, GLUON [BREMSSTRAHLUNG], SPIN: GLUON, EXCHANGE [Z0], JET [ELECTROPRODUCTION], FINAL STATE: (3JET), SEARCH FOR [QUARK], ELECTRON POSITRON: INCLUSIVE REACTION, ELECTROPRODUCTION: JET, COLLIDING BEAMS [ELECTRON POSITRON], HADRON [MULTIPLE PRODUCTION], Weinberg angle, MULTIPLICITY [CHARGED PARTICLE], MOMENTUM [DIFFERENTIAL CROSS SECTION], ANGULAR DEPENDENCE: DIFFERENTIAL CROSS SECTION, ELECTRON POSITRON: COLLIDING BEAMS, RATIO [TOTAL CROSS SECTION], REVIEW: EXPERIMENTAL RESULTS, ELASTIC SCATTERING: ELECTRON POSITRON, PHOTON [PAIR PRODUCTION], MASS: LOWER LIMIT, QUANTUM CHROMODYNAMICS: VALIDITY TEST, ELECTROPRODUCTION [JET], SPECTRUM: ENERGY LOSS, MULTIDIMENSIONAL ANALYSIS: DALITZ PLOT, SPECTRUM: TRANSVERSE MOMENTUM, MASS SPECTRUM [(MUON PHOTON)], PAIR PRODUCTION: PHOTON, SPECTRUM [ENERGY LOSS], SPIN [GLUON], POSTULATED PARTICLE: SUPERSYMMETRY, Z0 [EXCHANGE], BREMSSTRAHLUNG: GLUON, RADIATIVE CORRECTION, DIFFERENTIAL CROSS SECTION [ANGULAR DEPENDENCE], RATIO: TOTAL CROSS SECTION, LECTURES, LIFETIME [TAU], TOTAL CROSS SECTION [RATIO], MASS [EXCITED ELECTRON], COUPLING CONSTANT [STRONG INTERACTION], ELECTRON POSITRON: ELASTIC SCATTERING, MUON: PAIR PRODUCTION, CHANNEL CROSS SECTION: ENERGY DEPENDENCE, BREMSSTRAHLUNG [GLUON], TAU [PAIR PRODUCTION], P: ELECTROPRODUCTION, TOTAL CROSS SECTION [ENERGY DEPENDENCE], TOTAL CROSS SECTION: RATIO, ELECTROPRODUCTION: LEPTON, GLUON: SPIN, MASS [EXCITED MUON], SPECTRUM [TRANSVERSE MOMENTUM], MODEL: QUARK PARTON, HADRON: MULTIPLE PRODUCTION, PAIR PRODUCTION: MUON, INCLUSIVE REACTION [ELECTRON POSITRON], (MUON PHOTON) [MASS SPECTRUM], SEARCH FOR: EXCITED LEPTON, ELECTROPRODUCTION [LEPTON], PAIR PRODUCTION [PHOTON], QUARK PARTON [MODEL], Z0: EXCHANGE, SCALING: DIFFERENTIAL CROSS SECTION, TRANSVERSE MOMENTUM [SPECTRUM], 27.4-36.7 GEV-CMS, HEAVY LEPTON: SEARCH FOR, K [ELECTROPRODUCTION], SPECTRUM: RAPIDITY, ASYMMETRY [DIFFERENTIAL CROSS SECTION]
Abstract

107 pp. (1981).

Published
1981

9. Experimental Study of Inclusive Muon Spectra at PETRA

Author

Adeva, B., Barber, D. P., Chang, C. C., Chen, H. S., Chen, M., Chen, M. L., Chen, M. Y., Chu, Y. S., Clare, R., Deffur, E., Demarteau, M., Duinker, P., Becker, U., Feng, Z. Y., Fesefeldt, H. S., Fong, D., Fukushima, M., Harting, D., Hebbeker, T., Herten, G., Ho, M. C., Ilyas, M. M., Jiang, D. Z., Berdugo, J., Krenz, W., Kuijer, P., Li, Q. Z., Luckey, David, Luit, E. J., Mana, C., Marquina, M. A., Massaro, G. G. G., Mount, R., Newman, H., Berghoff, G., Pohl, M., Poschmann, F. P., Rau, R. R., Revol, J. P., Rodriguez, S., Rohde, M., Rubio, J. A., Rykaczewski, H., Salicio, J., Schulz, I., Bohm, A., Sinram, K., Steuer, M., Swider, G. M., Tang, H. W., Teuchert, D., Ting, Samuel C. C., Tung, K. L., Wang, M. Q., White, M., Wu, H. G., Branson, J. G., Wu, S. X., Wyslouch, B., Zhou, B., Zhu, R. Y., Zhu, Y. C., Aachen-DESY-Annecy, Burger, J. D., Capell, M., and Cerrada, M.

Subjects
BRANCHING RATIO [BOTTOM PARTICLE], MUON [ELECTROPRODUCTION], FRAGMENTATION [QUARK], SEARCH FOR: NEW PARTICLE, MASS [LOWER LIMIT], DESY PETRA STOR, +2JET+MUON%22">ELECTRON POSITRON --> 2JET MUON, LOWER LIMIT [MASS], BOTTOM PARTICLE [SEMILEPTONIC DECAY], ddc:550, MUON: ELECTROPRODUCTION, THRUST [JET], BOTTOM PARTICLE: SEMILEPTONIC DECAY, JET: THRUST, SEMILEPTONIC DECAY [CHARMED PARTICLE], JET [ELECTROPRODUCTION], SEMILEPTONIC DECAY [BOTTOM PARTICLE], SEARCH FOR: HIGGS PARTICLE, COLLIDING BEAMS [ELECTRON POSITRON], ELECTRON POSITRON: INCLUSIVE REACTION, ELECTROPRODUCTION: JET, SEMILEPTONIC DECAY: CHARMED PARTICLE, HIGGS PARTICLE [SEARCH FOR], ELECTRON POSITRON: COLLIDING BEAMS, BRANCHING RATIO [CHARMED PARTICLE], MASS: LOWER LIMIT, ELECTROPRODUCTION [JET], SPECTRUM: TRANSVERSE MOMENTUM, QUARK: FRAGMENTATION, SEMILEPTONIC DECAY: BOTTOM PARTICLE, SEARCH FOR: HEAVY LEPTON, TRANSVERSE MOMENTUM: SPECTRUM, ELECTROPRODUCTION: MUON, CHARMED PARTICLE: BRANCHING RATIO, CHARMED PARTICLE [SEMILEPTONIC DECAY], 33.00-38.54 GEV-CMS, BOTTOM PARTICLE: BRANCHING RATIO, MOMENTUM SPECTRUM, ELECTROPRODUCTION [MUON], heavy quark, COLLIDING BEAMS: ELECTRON POSITRON, EXPERIMENTAL RESULTS, SPECTRUM [TRANSVERSE MOMENTUM], JET: ELECTROPRODUCTION, ELECTRON POSITRON [COLLIDING BEAMS], INCLUSIVE REACTION [ELECTRON POSITRON], CHARMED PARTICLE: SEMILEPTONIC DECAY, NEW PARTICLE [SEARCH FOR], TRANSVERSE MOMENTUM [SPECTRUM], MARK J, HEAVY LEPTON [SEARCH FOR], LOWER LIMIT: MASS
Abstract

(1983). doi:10.1103/PhysRevLett.51.443, The results of a high-statistics study of inclusive muon spectra at PETRA are reported. Improved mass limits have been obtained for heavy quarks, heavy leptons, and charged Higgs particles. It is shown that the fragmentation properties of b quarks and c quarks are different, with the mean fragmentation variables 〈zb〉=0.75±0.03±0.06, 〈zc〉=0.46±0.02±0.05 and the average semileptonic branching ratio for the B and C hadrons R(B)=(10.5±1.5±1.3)%, R(C)=(11.5±1.0±1.7)%.

Published
1983
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10. A QCD analysis of jets in $E^+E^−$ annihilation

Author

Ali, Ahmed

Subjects
JET: ACOPLANARITY, Astrophysics::High Energy Astrophysical Phenomena, HIGHER-TWIST [EFFECT], RATIO [CHANNEL CROSS SECTION], TRANSVERSE MOMENTUM [DIFFERENTIAL CROSS SECTION], (3JET): FINAL STATE, QUARK: MASS, COUPLING CONSTANT [MESON QUARK], DIFFERENTIAL CROSS SECTION: TRANSVERSE MOMENTUM, (3JET) [FINAL STATE], EFFECT: HIGHER-TWIST, CHANNEL CROSS SECTION: RATIO, NUMERICAL CALCULATIONS, THRUST [JET], MESON QUARK: COUPLING CONSTANT, (4JET): FINAL STATE, JET: THRUST, JET: ELECTROPRODUCTION, COUPLING CONSTANT: MESON QUARK, JET [ELECTROPRODUCTION], FINAL STATE: (4JET), QUANTUM CHROMODYNAMICS: PERTURBATION THEORY, FINAL STATE: (3JET), ELECTROPRODUCTION: JET, MESON QUARK [COUPLING CONSTANT], MASS [QUARK], ANNIHILATION: ELECTRON POSITRON, TRANSVERSE MOMENTUM: DIFFERENTIAL CROSS SECTION, MASS: QUARK, QUARK [MASS], FINAL STATE [(3JET)], ELECTRON POSITRON [ANNIHILATION], FINAL STATE [(4JET)], ANNIHILATION [ELECTRON POSITRON], ELECTROPRODUCTION [JET], PERTURBATION THEORY [QUANTUM CHROMODYNAMICS], High Energy Physics::Experiment, (4JET) [FINAL STATE], DIFFERENTIAL CROSS SECTION [TRANSVERSE MOMENTUM], ACOPLANARITY [JET], ELECTRON POSITRON: ANNIHILATION
Abstract

9 pp. (1980)., Jets in e+e− annihilation are discussed in the context of perturbative Quantum Chromodynamics. Topics discussed include higher twist contribution, effects of quark masses and fragmentation on the 3 and 4 jet rates and some distributions bearing on the experimental verification of 4 jet events at the PETRA/PEP energies.

Published
1980
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11. e+ e- COLLIDING BEAM EXPERIMENTS

Author

Wiik, B. H.

Subjects
ELECTROPRODUCTION [RESONANCE], PSI MESONS: ELECTROPRODUCTION, CORRELATION [CHARGE], +2RHO%28770%290+POSITRON+ELECTRON%22">ELECTRON POSITRON --> 2RHO(770)0 POSITRON ELECTRON, PRODUCTION [BOTTOM MESON], BOTTOM MESON: PRODUCTION, ELECTROPRODUCTION [HADRON], RADIATIVE DECAY: J/PSI(3100), CHARMED MESON [PRODUCTION], NEUTRAL PARTICLE [ELECTROPRODUCTION], CHARGED PARTICLE: MULTIPLICITY, PRODUCTION [CHARMED MESON], HADRON [ELECTROPRODUCTION], TWO-PHOTON: EXCHANGE, CHARMED MESON: LIFETIME, ELECTROWEAK INTERACTION [EFFECT], ANNIHILATION: ELECTRON POSITRON, JET: SPHERICITY, PHOTON PHOTON: INTERACTION, SPHERICITY [JET], ELECTRON POSITRON [ELASTIC SCATTERING], ELECTRON POSITRON [ANNIHILATION], FRAGMENTATION [GLUON], ELASTIC SCATTERING [ELECTRON POSITRON], ANNIHILATION [ELECTRON POSITRON], Glashow-Iliopoulos-Maiani model, NEUTRAL PARTICLE: ELECTROPRODUCTION, QUARK: FRAGMENTATION, ELECTROPRODUCTION [UPSILON MESONS], MULTIPLE PRODUCTION [HADRON], QUARKONIUM [QUARK], CHARMED MESON: PRODUCTION, ELECTROPRODUCTION: NEUTRAL PARTICLE, INTERACTION: PHOTON PHOTON, COUPLING CONSTANT: STRONG INTERACTION, PSI MESONS [ELECTROPRODUCTION], STRONG INTERACTION [COUPLING CONSTANT], COLLIDING BEAMS: ELECTRON POSITRON, GLUON: FRAGMENTATION, TWO-PHOTON [EXCHANGE], JET: ELECTROPRODUCTION, J/PSI(3100) [RADIATIVE DECAY], ELECTRON POSITRON [COLLIDING BEAMS], EXCHANGE: TWO-PHOTON, STRONG INTERACTION: COUPLING CONSTANT, ELECTRON POSITRON: ANNIHILATION, PRODUCTION: BOTTOM MESON, FRAGMENTATION [QUARK], BOTTOM MESON [PRODUCTION], BIBLIOGRAPHY, INTERACTION [PHOTON PHOTON], HADRON: ELECTROPRODUCTION, MULTIPLE PRODUCTION: HADRON, JET [GLUON], POSTULATED PARTICLE: F, RESONANCE: ELECTROPRODUCTION, ELECTROPRODUCTION: UPSILON MESONS, GLUON [SPIN], ELECTROPRODUCTION: HADRON, THRUST [JET], JET: THRUST, SPIN: GLUON, JET [ELECTROPRODUCTION], EXCHANGE [TWO-PHOTON], EFFECT: ELECTROWEAK INTERACTION, COLLIDING BEAMS [ELECTRON POSITRON], HADRON [MULTIPLE PRODUCTION], ELECTROPRODUCTION: JET, MULTIPLICITY [CHARGED PARTICLE], RADIATIVE DECAY [J/PSI(3100)], F [POSTULATED PARTICLE], RATIO [TOTAL CROSS SECTION], ELECTRON POSITRON: COLLIDING BEAMS, ELECTROWEAK INTERACTION: EFFECT, ELASTIC SCATTERING: ELECTRON POSITRON, ELECTROPRODUCTION [PSI MESONS], ELECTROPRODUCTION [NEUTRAL PARTICLE], ELECTROPRODUCTION [JET], CHARGE: CORRELATION, SPIN [GLUON], J/PSI(3100): RADIATIVE DECAY, ELECTROPRODUCTION: PSI MESONS, ELECTROPRODUCTION: RESONANCE, RATIO: TOTAL CROSS SECTION, PRODUCTION: CHARMED MESON, TOTAL CROSS SECTION [RATIO], LECTURES, COUPLING CONSTANT [STRONG INTERACTION], ELECTRON POSITRON: ELASTIC SCATTERING, GLUON: JET, TOTAL CROSS SECTION: RATIO, GLUON: SPIN, LIFETIME [CHARMED MESON], EFFECT [ELECTROWEAK INTERACTION], HADRON: MULTIPLE PRODUCTION, QUARK: QUARKONIUM, RESONANCE [ELECTROPRODUCTION], PHOTON PHOTON [INTERACTION], UPSILON MESONS [ELECTROPRODUCTION], UPSILON MESONS: ELECTROPRODUCTION
Abstract

100 pp. (1980).

Published
1980
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12. Angular Asymmetries of $e^+ e^-$ Annihilation to Three Jets

Author

Koller, K., Sander, H. G., Walsh, T. F., and Zerwas, P. M.

Subjects
GLUON: BREMSSTRAHLUNG, EFFECT: NONPERTURBATIVE, +PI+ANYTHING%22">ELECTRON POSITRON --> PI ANYTHING, (3JET): FINAL STATE, HADRON: ELECTROPRODUCTION, ELECTROPRODUCTION: PI, ANGULAR DEPENDENCE [DIFFERENTIAL CROSS SECTION], ELECTROPRODUCTION [HADRON], NUMERICAL CALCULATIONS, PI [ELECTROPRODUCTION], ELECTROPRODUCTION: HADRON, THRUST [JET], Nuclear Experiment, JET: THRUST, GLUON [BREMSSTRAHLUNG], (JET): ANGULAR DISTRIBUTION, HADRON [ELECTROPRODUCTION], QUANTUM CHROMODYNAMICS, ANGULAR DISTRIBUTION: (JET), JET [ELECTROPRODUCTION], FINAL STATE: (3JET), ELECTROPRODUCTION: JET, PI: ELECTROPRODUCTION, ANNIHILATION: ELECTRON POSITRON, ANGULAR DEPENDENCE: DIFFERENTIAL CROSS SECTION, FINAL STATE [(3JET)], ELECTRON POSITRON [ANNIHILATION], ANNIHILATION [ELECTRON POSITRON], ELECTROPRODUCTION [JET], BREMSSTRAHLUNG: GLUON, Astrophysics::High Energy Astrophysical Phenomena, DIFFERENTIAL CROSS SECTION [ANGULAR DEPENDENCE], ELECTROPRODUCTION [PI], BREMSSTRAHLUNG [GLUON], (JET) [ANGULAR DISTRIBUTION], +QUARK+ANTIQUARK+GLUON%22">ELECTRON POSITRON --> QUARK ANTIQUARK GLUON, (3JET) [FINAL STATE], DIFFERENTIAL CROSS SECTION: ASYMMETRY, ANGULAR DISTRIBUTION [(JET)], ddc:530, ASYMMETRY: DIFFERENTIAL CROSS SECTION, JET: ELECTROPRODUCTION, High Energy Physics::Phenomenology, DIFFERENTIAL CROSS SECTION: ANGULAR DEPENDENCE, DIFFERENTIAL CROSS SECTION [ASYMMETRY], NONPERTURBATIVE [EFFECT], High Energy Physics::Experiment, ELECTRON POSITRON: ANNIHILATION, ASYMMETRY [DIFFERENTIAL CROSS SECTION]
Abstract

(1980). doi:10.1007/BF01588839, We discuss the angular asymmetries of 3-jet events ine+e− annihilation, originating from hard gluon bremsstrahlung off quarks. Lepton beam polarization helps to disentangle the various helicity components of the bremsstrahlung cross section. They are sensitive to the spin of the radiated quantum but are otherwise parameter-free.

Published
1979

13. Experimental search for Upsilon decay into 3 gluons

Author

Berger, Christoph, Genzel, H., Ackermann, H., Alexander, G., Barreiro, F., Burger, J., Criegee, L., Dehne, H. C., Devenish, R., Flugge, G., Franke, G., Gabriel, W., Grigull, R., Gerke, C., Horlitz, G., Knies, G., Lehmann, E., Mertiens, H. D., Pape, K. H., Reich, H. D., Stella, B., Timm, U., Waloschek, P., Lackas, W., Winter, G. G., Wolff, S., Zimmermann, W., Achterberg, O., Blobel, V., Boesten, L., Kapitza, H., Koppitz, B., Luhrsen, W., Maschuw, R., Raupach, F., van Staa, R., Spitzer, H., Chang, C. Y., Glasser, R. G., Kellogg, R. G., Lau, K. H., Sechi-Zorn, B., Skuja, A., Welch, G., Zorn, G. T., Wagner, W., Backer, A., Brandt, S., Derikum, K., Grupen, C., Meyer, H. J., Neumann, B., Rost, M., Zech, Gunter, Azemoon, T., Daum, H. J., Klovning, A., Meyer, H., Meyer, O., Rossler, M., Schmidt, D., Wacker, K., PLUTO Collaboration, Lillestol, E., Lillethun, E., and Skard, J. A.

Subjects
HADRONIC DECAY [UPSILON(9500)], 9.46 GEV-CM, High Energy Physics::Lattice, Nuclear Theory, (3JET): FINAL STATE, (3JET) [FINAL STATE], PLUTO, HADRONIC DECAY: UPSILON(9500), THRUST [JET], TRIPLICITY [JET], Nuclear Experiment, COLLIDING BEAMS: ELECTRON POSITRON, EXPERIMENTAL RESULTS, UPSILON(9500): HADRONIC DECAY, JET: THRUST, Particle Physics - Phenomenology, +3GLUON%22">UPSILON(9500) --> 3GLUON, DESY DORIS STOR, High Energy Physics::Phenomenology, FINAL STATE: (3JET), COLLIDING BEAMS [ELECTRON POSITRON], ANNIHILATION: ELECTRON POSITRON, ELECTRON POSITRON [COLLIDING BEAMS], ELECTRON POSITRON: COLLIDING BEAMS, FINAL STATE [(3JET)], ELECTRON POSITRON [ANNIHILATION], ANNIHILATION [ELECTRON POSITRON], UPSILON(9500) [HADRONIC DECAY], High Energy Physics::Experiment, JET: TRIPLICITY, ELECTRON POSITRON: ANNIHILATION
Abstract

7 pp. (1979)., The triplicity method was used to search for triple jets in the decay of T(9.46) into charged and neutral hadrons as an indication of the 3-gluon decay of the T. A comparison of the results with phase space, qij and 3-gluon predictions shows that the data is best described by a 3-gluon decay model.

Published
1979

14. High-energy trends in $e^{+}e^{-}$ physics

Author

Wolf, G

Subjects
ENERGY DEPENDENCE: SPHERICITY, EXPERIMENTAL RESULTS [REVIEW], DESY PETRA STOR, BIBLIOGRAPHY, Y-DEPENDENCE: DIFFERENTIAL CROSS SECTION, SPECTRUM [INCLUSIVE REACTION], EXPERIMENTAL RESULTS: REVIEW, TOP [SEARCH FOR], INCLUSIVE REACTION [SPECTRUM], THRUST [JET], SPHERICITY [ENERGY DEPENDENCE], JET: THRUST, EFFECT [QUANTUM CHROMODYNAMICS], TWO-PHOTON: EXCHANGE, JET [ELECTROPRODUCTION], EXCHANGE [TWO-PHOTON], ELECTRON POSITRON: INCLUSIVE REACTION, ELECTROPRODUCTION: JET, COLLIDING BEAMS [ELECTRON POSITRON], ANNIHILATION: ELECTRON POSITRON, REVIEW [EXPERIMENTAL RESULTS], JET: SPHERICITY, RAPIDITY [SPECTRUM], ELECTRON POSITRON: COLLIDING BEAMS, RATIO [TOTAL CROSS SECTION], SPHERICITY [JET], REVIEW: EXPERIMENTAL RESULTS, ELECTRON POSITRON [ANNIHILATION], ANNIHILATION [ELECTRON POSITRON], ELECTROPRODUCTION [JET], RATIO: TOTAL CROSS SECTION, top, TOTAL CROSS SECTION [RATIO], CHARGED PARTICLE: MULTIPLE PRODUCTION, CHARGED PARTICLE [MULTIPLE PRODUCTION], ENERGY DEPENDENCE [MULTIPLICITY], QUANTUM CHROMODYNAMICS: EFFECT, Y-DEPENDENCE [DIFFERENTIAL CROSS SECTION], TOTAL CROSS SECTION: RATIO, COLLIDING BEAMS: ELECTRON POSITRON, Particle Physics - Phenomenology, TWO-PHOTON [EXCHANGE], JET: ELECTROPRODUCTION, DIFFERENTIAL CROSS SECTION [Y-DEPENDENCE], MULTIPLICITY: ENERGY DEPENDENCE, TOP: JET, MULTIPLE PRODUCTION [CHARGED PARTICLE], High Energy Physics::Phenomenology, SPECTRUM [RAPIDITY], INCLUSIVE REACTION: SPECTRUM, SPECTRUM: INCLUSIVE REACTION, ELECTRON POSITRON [COLLIDING BEAMS], INCLUSIVE REACTION [ELECTRON POSITRON], Physics::History of Physics, JET [TOP], SEARCH FOR: TOP, EXCHANGE: TWO-PHOTON, MULTIPLE PRODUCTION: CHARGED PARTICLE, DIFFERENTIAL CROSS SECTION: Y-DEPENDENCE, RAPIDITY: SPECTRUM, High Energy Physics::Experiment, SCALING, ELECTRON POSITRON: ANNIHILATION, SPECTRUM: RAPIDITY
Abstract

25 pp. (1979)., Discusses the progress in e/sup +/e/sup -/ annihilation at PETRA energies including jets, tau heavy leptons and the separation of two photon events.

Published
1979

15. ENERGY DEPENDENCE OF EVENT SHAPES IN e+ e- ANNIHILATION AT center-of-mass ENERGIES FROM 7.7-GeV TO 31.6-GeV

Author

Burger, J., Berger, Christoph, Ackermann, H., Alexander, G., Criegee, L., Eskreys, A., Franke, G., Gabriel, W., Gerke, C., Knies, G., Lehmann, E., Mertiens, H. D., Genzel, H., Michelsen, U., Pape, K. H., Reich, H. D., Scarr, J. M., Stella, B., Timm, U., Winter, G. G., Zimmermann, W., Achterberg, O., Blobel, V., Grigull, R., Boesten, L., Hepp, V., Kapitza, H., Koppitz, B., Lewendel, B., Luhrsen, W., van Staa, R., Spitzer, H., Chang, C. Y., Glasser, R. G., Lackas, W., Kellogg, R. G., Lau, K. H., Polvado, R. O., Sechi-Zorn, B., Skuja, A., Welch, G., Zorn, G. T., Backer, A., Barreiro, F., Brandt, S., Raupach, F., Derikum, K., Grupen, C., Meyer, H. J., Neumann, B., Rost, M., Zech, Gunter, Daum, H. J., Meyer, H., Meyer, O., Rossler, M., Wagner, W., Schmidt, D., PLUTO Collaboration, Klovning, A., Lillestol, E., and Skard, J. A.

Subjects
MULTIPLE PRODUCTION [HADRON], SPECTRUM [ENERGY DEPENDENCE], JET [MASS], DESY PETRA STOR, COUPLING CONSTANT [STRONG INTERACTION], MASS: JET, TALK, (3JET): FINAL STATE, MULTIPLE PRODUCTION: HADRON, (3JET) [FINAL STATE], PLUTO, EVENT SHAPE ANALYSIS, SPECTRUM: ENERGY DEPENDENCE, COUPLING CONSTANT: STRONG INTERACTION, THRUST [JET], STRONG INTERACTION [COUPLING CONSTANT], COLLIDING BEAMS: ELECTRON POSITRON, EXPERIMENTAL RESULTS, JET: THRUST, JET: ELECTROPRODUCTION, DESY DORIS STOR, MASS [JET], JET [ELECTROPRODUCTION], FINAL STATE: (3JET), COLLIDING BEAMS [ELECTRON POSITRON], HADRON [MULTIPLE PRODUCTION], ELECTROPRODUCTION: JET, HADRON: MULTIPLE PRODUCTION, ANNIHILATION: ELECTRON POSITRON, ELECTRON POSITRON [COLLIDING BEAMS], JET: SPHERICITY, ENERGY DEPENDENCE [SPECTRUM], SPHERICITY [JET], FINAL STATE [(3JET)], ELECTRON POSITRON: COLLIDING BEAMS, ELECTRON POSITRON [ANNIHILATION], JET: MASS, 7.7-31.6 GEV-CMS, ANNIHILATION [ELECTRON POSITRON], STRONG INTERACTION: COUPLING CONSTANT, ELECTROPRODUCTION [JET], ENERGY DEPENDENCE: SPECTRUM, ELECTRON POSITRON: ANNIHILATION
Abstract

7 pp. (1981).

Published
1981
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16. Higher Order QCD Corrections to the Three Jet Cross-Sections: Bare Versus Dressed Jets

Author

Gutbrod, F., Kramer, G., and Schierholz, G.

Subjects
DIFFERENTIAL CROSS SECTION: X-DEPENDENCE, Astrophysics::High Energy Astrophysical Phenomena, (3JET): FINAL STATE, X-DEPENDENCE: DIFFERENTIAL CROSS SECTION, (3JET) [FINAL STATE], HIGHER-ORDER [PERTURBATION THEORY], NUMERICAL CALCULATIONS, ddc:530, THRUST [JET], (4JET): FINAL STATE, JET: THRUST, QUANTUM CHROMODYNAMICS, DIFFERENTIAL CROSS SECTION [X-DEPENDENCE], FINAL STATE: (4JET), FINAL STATE: (3JET), ANNIHILATION: ELECTRON POSITRON, PERTURBATION THEORY: HIGHER-ORDER, FINAL STATE [(3JET)], ELECTRON POSITRON [ANNIHILATION], FINAL STATE [(4JET)], ANNIHILATION [ELECTRON POSITRON], High Energy Physics::Experiment, (4JET) [FINAL STATE], X-DEPENDENCE [DIFFERENTIAL CROSS SECTION], ELECTRON POSITRON: ANNIHILATION
Abstract

(1984). doi:10.1007/BF01577037, We report results for the three-jet cross section to order αs2 using a jet resolution criterion depending on the jet mass and study the sum of three-and four-jet cross sections inO(αs2) as a function of the resolution parameters in order to obtain the limit of infinite resolution.

Published
1983
Full Text
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17. HIGHER ORDER QCD CORRECTIONS FOR e+ e- ANNIHILATION JET CROSS-SECTIONS: A REEVALUATION

Author

Kramer, Gustav

Subjects
MULTIPLE PRODUCTION [HADRON], PHASE SPACE [KINEMATICS], KINEMATICS: PHASE SPACE, INTERPRETATION OF EXPERIMENTS [NUMERICAL CALCULATIONS], HIGHER-ORDER [CORRECTION], COUPLING CONSTANT [STRONG INTERACTION], CLUSTER [MODEL], (3JET): FINAL STATE, Y-DEPENDENCE: DIFFERENTIAL CROSS SECTION, MULTIPLE PRODUCTION: HADRON, MODEL: CLUSTER, (3JET) [FINAL STATE], COUPLING CONSTANT: STRONG INTERACTION, NUMERICAL CALCULATIONS: INTERPRETATION OF EXPERIMENTS, Y-DEPENDENCE [DIFFERENTIAL CROSS SECTION], THRUST [JET], STRONG INTERACTION [COUPLING CONSTANT], (4JET): FINAL STATE, JET: THRUST, JET: ELECTROPRODUCTION, QUANTUM CHROMODYNAMICS, DIFFERENTIAL CROSS SECTION [Y-DEPENDENCE], CHANNEL CROSS SECTION, FINAL STATE: (4JET), JET [ELECTROPRODUCTION], FINAL STATE: (3JET), ELECTROPRODUCTION: JET, HADRON [MULTIPLE PRODUCTION], HADRON: MULTIPLE PRODUCTION, CORRECTION: HIGHER-ORDER, ANNIHILATION: ELECTRON POSITRON, FINAL STATE [(3JET)], ELECTRON POSITRON [ANNIHILATION], FINAL STATE [(4JET)], STRONG INTERACTION: COUPLING CONSTANT, ANNIHILATION [ELECTRON POSITRON], DIFFERENTIAL CROSS SECTION: Y-DEPENDENCE, ELECTROPRODUCTION [JET], (4JET) [FINAL STATE], ELECTRON POSITRON: ANNIHILATION
Abstract

39 pp. (1982).

Published
1982

18. New $e^+e^−$ physics

Author

Wiik, B. H.

Subjects
EXPERIMENTAL RESULTS [REVIEW], INCLUSIVE REACTION: DIFFERENTIAL CROSS SECTION, ELECTROPRODUCTION [RESONANCE], BIBLIOGRAPHY, INTERACTION [PHOTON PHOTON], HADRON: ELECTROPRODUCTION, MULTIPLE PRODUCTION: HADRON, ELECTROPRODUCTION [HADRON], RESONANCE: ELECTROPRODUCTION, GLUON [SPIN], ELECTROPRODUCTION: HADRON, THRUST [JET], CHARGED PARTICLE: MULTIPLICITY, JET: THRUST, NUMERICAL CALCULATIONS: MONTE CARLO, SPIN: GLUON, TOP: FRAGMENTATION, HADRON [ELECTROPRODUCTION], MONTE CARLO [NUMERICAL CALCULATIONS], DEEP INELASTIC SCATTERING [PHOTON ELECTRON], TWO-PHOTON: EXCHANGE, JET [ELECTROPRODUCTION], EXCHANGE [TWO-PHOTON], COLLIDING BEAMS [ELECTRON POSITRON], HADRON [MULTIPLE PRODUCTION], DIFFERENTIAL CROSS SECTION [INCLUSIVE REACTION], ELECTROPRODUCTION: JET, ELECTRON POSITRON: INCLUSIVE REACTION, MULTIPLICITY [CHARGED PARTICLE], ANNIHILATION: ELECTRON POSITRON, JET: SPHERICITY, PHOTON PHOTON: INTERACTION, HEAVY LEPTON: POSTULATED PARTICLE, SPHERICITY [JET], RATIO [TOTAL CROSS SECTION], ELECTRON POSITRON: COLLIDING BEAMS, ELECTRON POSITRON [ANNIHILATION], REVIEW: EXPERIMENTAL RESULTS, NEUTRAL PARTICLE: ENERGY, FRAGMENTATION [GLUON], ANNIHILATION [ELECTRON POSITRON], ELECTROPRODUCTION [JET], ELECTROWEAK INTERACTION, ENERGY [NEUTRAL PARTICLE], SPIN [GLUON], MULTIPLE PRODUCTION [HADRON], INCLUSIVE REACTION [DIFFERENTIAL CROSS SECTION], PHOTON ELECTRON [DEEP INELASTIC SCATTERING], FRAGMENTATION [TOP], ELECTROPRODUCTION: RESONANCE, RATIO: TOTAL CROSS SECTION, POSTULATED PARTICLE [HEAVY LEPTON], top, TOTAL CROSS SECTION [RATIO], COUPLING CONSTANT [STRONG INTERACTION], INTERACTION: PHOTON PHOTON, COUPLING CONSTANT: STRONG INTERACTION, DIFFERENTIAL CROSS SECTION: INCLUSIVE REACTION, STRONG INTERACTION [COUPLING CONSTANT], TOTAL CROSS SECTION: RATIO, COLLIDING BEAMS: ELECTRON POSITRON, GLUON: SPIN, GLUON: FRAGMENTATION, TWO-PHOTON [EXCHANGE], JET: ELECTROPRODUCTION, DEEP INELASTIC SCATTERING: PHOTON ELECTRON, HADRON: MULTIPLE PRODUCTION, ELECTRON POSITRON [COLLIDING BEAMS], INCLUSIVE REACTION [ELECTRON POSITRON], EXCHANGE: TWO-PHOTON, RESONANCE [ELECTROPRODUCTION], STRONG INTERACTION: COUPLING CONSTANT, PHOTON ELECTRON: DEEP INELASTIC SCATTERING, PHOTON PHOTON [INTERACTION], ELECTRON POSITRON: ANNIHILATION
Abstract

54 pp. (1980)., Scitation is the online home of leading journals and conference proceedings from AIP Publishing and AIP Member Societies

Published
1980
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19. Discovery of Three Jet Events and a Test of Quantum Chromodynamics at PETRA Energies

Author

Barber, D. P., Becker, U., Chen, M., Cheng, C. P., Chu, Y. S., Clare, R., Duinker, P., Fang, G. Y., Fesefeldt, H., Fong, D., Fukushima, M., Guo, J. C., Benda, H., Hariri, A., Herten, G., Ho, M. C., Hsu, H. K., Hsu, T. T., Kadel, R. W., Krenz, W., Li, J., Li, Q. Z., Lu, M., Boehm, A., Luckey, David, Ma, D. A., Ma, C. M., Massaro, G. G. G., Matsuda, T., Newman, H., Paradiso, Joseph A., Poschmann, F. P., Revol, J. P., Rohde, M., Branson, J. G., Rykaczewski, H., Sinram, K., Tang, H. W., Tang, L. G., Ting, Samuel C. C., Tung, K. L., Vannucci, F., Wang, X. R., Wei, P. S., White, M., Bron, J., Wu, G. H., Wu, T. W., Xi, J. P., Yang, P. C., Yu, X. H., Zhang, N. L., Zhu, R. Y., Mark-J Collaboration, Buikman, D., Burger, J., Chang, C. C., and Chen, H. S.

Subjects
MULTIPLE PRODUCTION [HADRON], VALIDITY TEST [QUANTUM CHROMODYNAMICS], JET [QUARK], +QUARK+ANTIQUARK%22">ELECTRON POSITRON --> QUARK ANTIQUARK, High Energy Physics::Lattice, ENERGY [JET], DESY PETRA STOR, QUARK ANTIQUARK [PAIR PRODUCTION], (3JET) [FINAL STATE], +QUARK+ANTIQUARK+GLUON%22">ELECTRON POSITRON --> QUARK ANTIQUARK GLUON, JET [GLUON], ddc:550, THRUST [JET], EXPERIMENTAL RESULTS, PAIR PRODUCTION [QUARK ANTIQUARK], High Energy Physics::Phenomenology, JET [ELECTROPRODUCTION], COLLIDING BEAMS [ELECTRON POSITRON], HADRON [MULTIPLE PRODUCTION], MARK J [MAGNETIC SPECTROMETER], ELECTRON POSITRON [COLLIDING BEAMS], ENERGY SPECTRUM, ELECTRON POSITRON [ANNIHILATION], ANNIHILATION [ELECTRON POSITRON], ELECTROPRODUCTION [JET], +%28N%29HADRON%22">ELECTRON POSITRON --> (N)HADRON, High Energy Physics::Experiment, INTERPRETATION OF EXPERIMENTS, 27.4: 30.0: 31.6 GEV-CM: ((3)): ((4)) [17.0]
Abstract

We report the analysis of the spatial energy distribution of data for e+e−→hadrons obtained with the MARK-J detector at PETRA. We define the quantity 'oblateness' to describe the flat shape of the energy configuration and the three-jet structure which is unambiguously observed for the first time. Our data can be explained by quantum chromodynamic predictions for the production of quark-antiquark pairs accompanied by hard noncollinear gluons.

Published
1979

20. Recent Results from PETRA: Search for New Particles

Author

Buerger, Jochen

Subjects
EXCITED ELECTRON: MASS, SUPERSYMMETRY: POSTULATED PARTICLE, PHOTON: PAIR PRODUCTION, SEARCH FOR [NEW PARTICLE], +EXCITED+ELECTRON+NEUTRINO%22">ELECTRON POSITRON --> EXCITED ELECTRON NEUTRINO, DESY PETRA STOR, MASS [LOWER LIMIT], SEARCH FOR [HEAVY LEPTON], LOWER LIMIT [MASS], +QUARK+ANTIQUARK+ANYTHING%22">ELECTRON POSITRON --> QUARK ANTIQUARK ANYTHING, ANGULAR DEPENDENCE [DIFFERENTIAL CROSS SECTION], EXCITED MUON [POSTULATED PARTICLE], ENERGY DEPENDENCE: TOTAL CROSS SECTION, MUON: ELECTROPRODUCTION, EXCITED ELECTRON [MASS], TOTAL CROSS SECTION: ENERGY DEPENDENCE, ENERGY DEPENDENCE [TOTAL CROSS SECTION], POSTULATED PARTICLE: HEAVY ELECTRON, HEAVY ELECTRON [POSTULATED PARTICLE], SCALAR [LEPTON], ANNIHILATION: ELECTRON POSITRON, ELECTRON POSITRON [ANNIHILATION], DECAY: INCLUSIVE REACTION, ANNIHILATION [ELECTRON POSITRON], QUARK [PAIR PRODUCTION], +2MUON+PHOTON%22">ELECTRON POSITRON --> 2MUON PHOTON, +MUON%2B+MUON-+ANYTHING%22">BOTTOM MESON --> MUON+ MUON- ANYTHING, BOTTOM MESON: BRANCHING RATIO, THRESHOLD: TOPONIUM, BOTTOM MESON: SEMILEPTONIC DECAY, MASS SPECTRUM: (MUON PHOTON), SEMILEPTONIC DECAY [BOTTOM MESON], ELECTROPRODUCTION [MUON], COLLIDING BEAMS: ELECTRON POSITRON, BOTTOM MESON: LIFETIME, (MUON PHOTON): MASS SPECTRUM, SEMILEPTONIC DECAY: BOTTOM MESON, LEPTON: POSTULATED PARTICLE, ELECTRON POSITRON [COLLIDING BEAMS], DECAY [INCLUSIVE REACTION], +MUON%2B+MUON-+2PHOTON%22">ELECTRON POSITRON --> MUON+ MUON- 2PHOTON, DIFFERENTIAL CROSS SECTION: ANGULAR DEPENDENCE, BOTTOM MESON [SEMILEPTONIC DECAY], EXCITED ELECTRON [POSTULATED PARTICLE], +%28N%29HADRON+MUON%22">ELECTRON POSITRON --> (N)HADRON MUON, ELECTRON POSITRON: ANNIHILATION, LEPTON: SCALAR, LOWER LIMIT: MASS, MASS: EXCITED ELECTRON, MUON [ELECTROPRODUCTION], NEW PARTICLE: SEARCH FOR, EXPERIMENTAL RESULTS [REVIEW], BIBLIOGRAPHY, MODEL: TECHNICOLOR, POSTULATED PARTICLE [SUPERSYMMETRY], +2PHOTON%22">ELECTRON POSITRON --> 2PHOTON, INCLUSIVE REACTION: DECAY, UPPER LIMIT [BRANCHING RATIO], QUARK: SEARCH FOR, THRUST [JET], POSTULATED PARTICLE: TECHNIPION, JET: THRUST, TOPONIUM [THRESHOLD], UPPER LIMIT [LIFETIME], (MUON) [TRANSVERSE MOMENTUM], SEARCH FOR [QUARK], ELECTRON POSITRON: INCLUSIVE REACTION, COLLIDING BEAMS [ELECTRON POSITRON], POSTULATED PARTICLE: EXCITED ELECTRON, ANGULAR DEPENDENCE: DIFFERENTIAL CROSS SECTION, ELECTRON POSITRON: COLLIDING BEAMS, RATIO [TOTAL CROSS SECTION], REVIEW: EXPERIMENTAL RESULTS, PHOTON [PAIR PRODUCTION], MASS: LOWER LIMIT, INCLUSIVE REACTION [DECAY], TECHNICOLOR [MODEL], LIFETIME: UPPER LIMIT, MASS SPECTRUM [(MUON PHOTON)], PAIR PRODUCTION: PHOTON, LIFETIME [BOTTOM MESON], QUARK: PAIR PRODUCTION, TRANSVERSE MOMENTUM: (MUON), +QUARK+ANTIQUARK%22">ELECTRON POSITRON --> QUARK ANTIQUARK, PAIR PRODUCTION [QUARK], ELECTROPRODUCTION: MUON, DIFFERENTIAL CROSS SECTION [ANGULAR DEPENDENCE], RATIO: TOTAL CROSS SECTION, top, TOTAL CROSS SECTION [RATIO], MASS [EXCITED ELECTRON], TOTAL CROSS SECTION [ENERGY DEPENDENCE], BRANCHING RATIO [BOTTOM MESON], +MUON%2B+ANYTHING%22">BOTTOM MESON --> MUON+ ANYTHING, TOTAL CROSS SECTION: RATIO, POSTULATED PARTICLE [LEPTON], TECHNIPION [POSTULATED PARTICLE], BRANCHING RATIO: UPPER LIMIT, PAIR PRODUCTION: QUARK, INCLUSIVE REACTION [ELECTRON POSITRON], (MUON PHOTON) [MASS SPECTRUM], PAIR PRODUCTION [PHOTON], POSTULATED PARTICLE: EXCITED MUON, HEAVY LEPTON: SEARCH FOR, 27.6-36.7 GEV-CMS
Abstract

21 pp. (1981).

Published
1981

21. Results from pluto at petra

Author

Berger, Christoph, Genzel, H., Ackermann, H., Alexander, G., Barreiro, F., Burger, J., Criegee, L., Dehne, H. C., Devenish, R., Flugge, G., Franke, G., Gabriel, W., Grigull, R., Gerke, C., Horlitz, G., Knies, G., Lehmann, E., Mertiens, H. D., Pape, K. H., Reich, H. D., Stella, B., Timm, U., Waloschek, P., Lackas, W., Winter, G. G., Wolff, S., Zimmermann, W., Achterberg, O., Blobel, V., Boesten, L., Kapitza, H., Koppitz, B., Luhrsen, W., Maschuw, R., Raupach, F., van Staa, R., Spitzer, H., Chang, C. Y., Glasser, R. G., Kellogg, R. G., Lau, K. H., Sechi-Zorn, B., Skuja, A., Welch, G., Zorn, G. T., Wagner, W., Backer, A., Brandt, S., Derikum, K., Grupen, C., Meyer, H. J., Neumann, B., Rost, M., Zech, Gunter, Azemoon, T., Daum, H. J., Klovning, A., Meyer, H., Meyer, O., Rossler, M., Schmidt, D., Wacker, K., PLUTO Collaboration, Lillestol, E., Lillethun, E., and Skard, J. A.

Subjects
PAIR PRODUCTION [MUON], 13.0: 17.0: 27.4 GEV-CM, PHOTON: PAIR PRODUCTION, DESY PETRA STOR, BIBLIOGRAPHY, INTERACTION [PHOTON PHOTON], HADRON: ELECTROPRODUCTION, ELECTROPRODUCTION [HADRON], ONE-PHOTON [EXCHANGE], PLUTO, ELECTROPRODUCTION [BOTTOM MESON], QUANTUM ELECTRODYNAMICS: VALIDITY TEST, ENERGY DEPENDENCE: TOTAL CROSS SECTION, MESON RESONANCE: ELECTROPRODUCTION, GLUON [SPIN], ELECTROPRODUCTION: HADRON, THRUST [JET], QUARK: TOP, ELECTROPRODUCTION: MESON RESONANCE, JET: THRUST, ENERGY DEPENDENCE [TOTAL CROSS SECTION], TOTAL CROSS SECTION: ENERGY DEPENDENCE, SPIN: GLUON, HADRON [ELECTROPRODUCTION], INELASTIC SCATTERING: ELECTRON POSITRON, DEEP INELASTIC SCATTERING [PHOTON ELECTRON], TWO-PHOTON: EXCHANGE, JET [ELECTROPRODUCTION], EXCHANGE [TWO-PHOTON], COLLIDING BEAMS [ELECTRON POSITRON], Weinberg angle, ELECTROPRODUCTION: JET, INELASTIC SCATTERING [ELECTRON POSITRON], ANNIHILATION: ELECTRON POSITRON, PHOTON PHOTON: INTERACTION, ELECTRON POSITRON: COLLIDING BEAMS, ELECTRON POSITRON [ELASTIC SCATTERING], ELECTRON POSITRON [ANNIHILATION], PHOTON [PAIR PRODUCTION], ELASTIC SCATTERING: ELECTRON POSITRON, ELASTIC SCATTERING [ELECTRON POSITRON], 17.0: 27.4 GEV-CM [13.0], ANNIHILATION [ELECTRON POSITRON], EXCHANGE [ONE-PHOTON], ELECTROPRODUCTION [JET], BOTTOM MESON: ELECTROPRODUCTION, PAIR PRODUCTION: PHOTON, SPIN [GLUON], CROSS SECTION: HADRONIC, TOP [QUARK], ELECTRON POSITRON [INELASTIC SCATTERING], PHOTON ELECTRON [DEEP INELASTIC SCATTERING], HADRONIC [CROSS SECTION], MESON RESONANCE [ELECTROPRODUCTION], LECTURES, ELECTRON POSITRON: INELASTIC SCATTERING, MUON: PAIR PRODUCTION, ELECTRON POSITRON: ELASTIC SCATTERING, INTERACTION: PHOTON PHOTON, ELECTROPRODUCTION: BOTTOM MESON, TOTAL CROSS SECTION [ENERGY DEPENDENCE], STRUCTURE FUNCTION [PHOTON], COLLIDING BEAMS: ELECTRON POSITRON, EXPERIMENTAL RESULTS, GLUON: SPIN, TWO-PHOTON [EXCHANGE], BOTTOM MESON [ELECTROPRODUCTION], JET: ELECTROPRODUCTION, ONE-PHOTON: EXCHANGE, DEEP INELASTIC SCATTERING: PHOTON ELECTRON, VALIDITY TEST [QUANTUM ELECTRODYNAMICS], < 36 GEV-CMS, PAIR PRODUCTION: MUON, ELECTRON POSITRON [COLLIDING BEAMS], ELECTROPRODUCTION [MESON RESONANCE], EXCHANGE: ONE-PHOTON, PAIR PRODUCTION [PHOTON], EXCHANGE: TWO-PHOTON, MUON [PAIR PRODUCTION], PHOTON: STRUCTURE FUNCTION, PHOTON ELECTRON: DEEP INELASTIC SCATTERING, PHOTON PHOTON [INTERACTION], ELECTRON POSITRON: ANNIHILATION
Abstract

7 pp. (1979).

Published
1979
Full Text
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22. GLUON FRAGMENTATION IN upsilon (1S) DECAYS

Author

Bienlein, J. K. and LENA Collaboration

Subjects
UPSILON(9460) [DECAY], FRAGMENTATION [QUARK], +3GLUON%22">UPSILON(9460) --> 3GLUON, STRING [MODEL], ENERGY: MOMENT, DESY PETRA STOR, MAGNETIC DETECTOR: LENA, 9.45 GEV-CMS, ELECTROPRODUCTION: UPSILON(9460), DECAY [UPSILON(9460)], +UPSILON%289460%29%22">ELECTRON POSITRON --> UPSILON(9460), THRUST [JET], COLLIDING BEAMS: ELECTRON POSITRON, EXPERIMENTAL RESULTS, CHARGED PARTICLE: MULTIPLICITY, MODEL: STRING, JET: THRUST, GLUON: FRAGMENTATION, ELECTROPRODUCTION [UPSILON(9460)], PHOTON: ENERGY, DECAY: UPSILON(9460), COLLIDING BEAMS [ELECTRON POSITRON], ENERGY [PHOTON], MULTIPLICITY [CHARGED PARTICLE], LENA [MAGNETIC DETECTOR], ANNIHILATION: ELECTRON POSITRON, UPSILON(9460): ELECTROPRODUCTION, JET: SPHERICITY, ELECTRON POSITRON [COLLIDING BEAMS], ELECTRON POSITRON: COLLIDING BEAMS, SPHERICITY [JET], ELECTRON POSITRON [ANNIHILATION], UPSILON(9460) [ELECTROPRODUCTION], MODEL: FRAGMENTATION, FRAGMENTATION [GLUON], MOMENT [ENERGY], ANNIHILATION [ELECTRON POSITRON], QUARK: FRAGMENTATION, UPSILON(9460): DECAY, ELECTRON POSITRON: ANNIHILATION, FRAGMENTATION [MODEL]
Abstract

8 pp. (1983).

Published
1983

23. Recent Results from DORIS

Author

Bienlein, J. K.

Subjects
(2JET): FINAL STATE, HADRONIC DECAY [UPSILON(9460)], EXPERIMENTAL RESULTS [REVIEW], HADRON: YIELD, RADIATIVE DECAY: UPSILON(10020), 7.4-7.5: 8.6-10.1 GEV, (3JET): FINAL STATE, +UPSILON%289460%29+2PHOTON%22">UPSILON(10020) --> UPSILON(9460) 2PHOTON, HADRON: ELECTROPRODUCTION, SPECTRUM [INCLUSIVE REACTION], ELECTROPRODUCTION: UPSILON(9460), ELECTROPRODUCTION [HADRON], ANGULAR CORRELATION: TWO-PARTICLE, JET [GLUON], UPSILON(10020) [CASCADE DECAY], BRANCHING RATIO [UPSILON(10020)], UPSILON(9460) [LEPTONIC DECAY], UPSILON(9460): HADRONIC DECAY, INCLUSIVE REACTION [SPECTRUM], TWO-PARTICLE [ANGULAR CORRELATION], ELECTROPRODUCTION: HADRON, GLUON [SPIN], THRUST [JET], UPSILON(10020): BRANCHING RATIO, JET: THRUST, ELECTROPRODUCTION [UPSILON(9460)], 8.6-10.1 GEV [7.4-7.5], ELECTROPRODUCTION: UPSILON(10020), SPIN: GLUON, HADRON [ELECTROPRODUCTION], YIELD [HADRON], JET [ELECTROPRODUCTION], FINAL STATE: (3JET), HADRONIC DECAY [UPSILON(10020)], ELECTRON POSITRON: INCLUSIVE REACTION, ELECTROPRODUCTION: JET, COLLIDING BEAMS [ELECTRON POSITRON], ANNIHILATION: ELECTRON POSITRON, UPSILON(9460): ELECTROPRODUCTION, JET: SPHERICITY, ELECTRON POSITRON: COLLIDING BEAMS, FINAL STATE [(3JET)], SPHERICITY [JET], REVIEW: EXPERIMENTAL RESULTS, ELECTRON POSITRON [ANNIHILATION], FRAGMENTATION [GLUON], CHARGED PARTICLE [MULTIPLICITY], FINAL STATE: (2JET), ANNIHILATION [ELECTRON POSITRON], ELECTROPRODUCTION [JET], SPIN [GLUON], LEPTONIC DECAY: UPSILON(9460), JET [QUARK], DIFFERENTIAL CROSS SECTION, CASCADE DECAY: UPSILON(10020), COUPLING CONSTANT [STRONG INTERACTION], (2JET) [FINAL STATE], (3JET) [FINAL STATE], UPSILON(10020): CASCADE DECAY, MULTIPLICITY: CHARGED PARTICLE, COUPLING CONSTANT: STRONG INTERACTION, GLUON: JET, FINAL STATE [(2JET)], UPSILON(10020) [ELECTROPRODUCTION], STRONG INTERACTION [COUPLING CONSTANT], COLLIDING BEAMS: ELECTRON POSITRON, UPSILON(9460) [HADRONIC DECAY], GLUON: SPIN, UPSILON(10020) [HADRONIC DECAY], HADRONIC DECAY: UPSILON(10020), QUARK: JET, UPSILON(10020): HADRONIC DECAY, GLUON: FRAGMENTATION, UPSILON(10020): RADIATIVE DECAY, JET: ELECTROPRODUCTION, UPSILON(10020) [RADIATIVE DECAY], DESY DORIS STOR, INCLUSIVE REACTION: SPECTRUM, SPECTRUM: INCLUSIVE REACTION, RADIATIVE DECAY [UPSILON(10020)], CASCADE DECAY [UPSILON(10020)], UPSILON(10020): ELECTROPRODUCTION, INCLUSIVE REACTION [ELECTRON POSITRON], ELECTRON POSITRON [COLLIDING BEAMS], UPSILON(9460) [ELECTROPRODUCTION], STRONG INTERACTION: COUPLING CONSTANT, UPSILON(9460): LEPTONIC DECAY, HADRONIC DECAY: UPSILON(9460), ELECTROPRODUCTION [UPSILON(10020)], LEPTONIC DECAY [UPSILON(9460)], ELECTRON POSITRON: ANNIHILATION
Abstract

14 pp. (1981).

Published
1981

24. Jet Cross-Sections in $e^+ e^-$ Annihilation

Author

Kramer, G. and Lampe, B.

Subjects
(2JET): FINAL STATE, DIFFERENTIAL CROSS SECTION, (3JET): FINAL STATE, (2JET) [FINAL STATE], (3JET) [FINAL STATE], NUMERICAL CALCULATIONS, THRUST [JET], FINAL STATE [(2JET)], (4JET): FINAL STATE, JET: THRUST, JET: ELECTROPRODUCTION, FINAL STATE: (4JET), JET [ELECTROPRODUCTION], FINAL STATE: (3JET), QUANTUM CHROMODYNAMICS: PERTURBATION THEORY, ELECTROPRODUCTION: JET, ANNIHILATION: ELECTRON POSITRON, FINAL STATE [(3JET)], ELECTRON POSITRON [ANNIHILATION], FINAL STATE [(4JET)], FINAL STATE: (2JET), ANNIHILATION [ELECTRON POSITRON], ELECTROPRODUCTION [JET], PERTURBATION THEORY [QUANTUM CHROMODYNAMICS], (4JET) [FINAL STATE], ELECTRON POSITRON: ANNIHILATION, CROSS SECTION
Abstract

138 pp. (1986).

Published
1986

25. Jet-Achsen beim $\Upsilon$(1S)-Zerfall

Author

Bartels, Hans-Werner

Subjects
NONLEPTONIC DECAY [UPSILON(9460)], VALIDITY TEST [QUANTUM CHROMODYNAMICS], +3GLUON%22">UPSILON(9460) --> 3GLUON, PLANARITY [EVENT SHAPE ANALYSIS], FRAGMENTATION [JET], THESIS, ELECTROPRODUCTION: UPSILON(9460), JET [GLUON], GLUON [SPIN], GLUON: JET, THRUST [JET], COLLIDING BEAMS: ELECTRON POSITRON, EXPERIMENTAL RESULTS, GLUON: SPIN, JET: THRUST, DESY DORIS II STOR, ELECTROPRODUCTION [UPSILON(9460)], UPSILON(9460) [NONLEPTONIC DECAY], SPIN: GLUON, NONLEPTONIC DECAY: UPSILON(9460), EVENT SHAPE ANALYSIS: PLANARITY, COLLIDING BEAMS [ELECTRON POSITRON], ANNIHILATION: ELECTRON POSITRON, JET: FRAGMENTATION, UPSILON(9460): ELECTROPRODUCTION, JET: SPHERICITY, ELECTRON POSITRON [COLLIDING BEAMS], UPSILON(9460): NONLEPTONIC DECAY, ELECTRON POSITRON: COLLIDING BEAMS, SPHERICITY [JET], ELECTRON POSITRON [ANNIHILATION], UPSILON(9460) [ELECTROPRODUCTION], QUANTUM CHROMODYNAMICS: VALIDITY TEST, ANNIHILATION [ELECTRON POSITRON], 9.46 GEV-CMS, ANGULAR DISTRIBUTION, SPIN [GLUON], Crystal Ball, ELECTRON POSITRON: ANNIHILATION
Abstract

41 pp. (1986).

Published
1986

26. JET PRODUCTION IN e+ e- ANNIHILATION AND DECAYS OF THE upsilon (9.46) RESONANCE: RESULTS FROM PLUTO

Author

Knies, Gerhard

Subjects
DECAY: UPSILON(9500), CHANNEL CROSS SECTION [HADRONIC], EXPERIMENTAL RESULTS [REVIEW], MOMENTUM SPECTRUM: ENERGY DEPENDENCE, UPSILON(9500): DECAY, DESY PETRA STOR, CHANNEL CROSS SECTION: HADRONIC, EXPERIMENTAL RESULTS: REVIEW, PLUTO, SPECTRUM [X-DEPENDENCE], DECAY [UPSILON(9500)], HADRONIC: CHANNEL CROSS SECTION, THRUST [JET], JET: THRUST, QUANTUM CHROMODYNAMICS, EXCHANGE: THREE-GLUON, JET [ELECTROPRODUCTION], HADRONIC [CHANNEL CROSS SECTION], ELECTROPRODUCTION: JET, COLLIDING BEAMS [ELECTRON POSITRON], SPECTRUM: X-DEPENDENCE, ANNIHILATION: ELECTRON POSITRON, REVIEW [EXPERIMENTAL RESULTS], JET: SPHERICITY, RAPIDITY [SPECTRUM], ELECTRON POSITRON: COLLIDING BEAMS, SPHERICITY [JET], DALITZ PLOT [MULTIDIMENSIONAL ANALYSIS], REVIEW: EXPERIMENTAL RESULTS, ELECTRON POSITRON [ANNIHILATION], THREE-GLUON [EXCHANGE], FRAGMENTATION [GLUON], ANNIHILATION [ELECTRON POSITRON], ELECTROPRODUCTION [JET], MULTIDIMENSIONAL ANALYSIS: DALITZ PLOT, SPECTRUM: TRANSVERSE MOMENTUM, ENERGY DEPENDENCE [MOMENTUM SPECTRUM], ANGULAR DISTRIBUTION, TRANSVERSE MOMENTUM: SPECTRUM, PAIR PRODUCTION: QUARK ANTIQUARK, X-DEPENDENCE: SPECTRUM, X-DEPENDENCE [SPECTRUM], QUARK ANTIQUARK [PAIR PRODUCTION], EXCHANGE [THREE-GLUON], bottom, THREE-GLUON: EXCHANGE, 3.10-5.00: 7.70: 9.40: 9.45: 13.00: 17.00 GEV-CM, UPSILON(9500) [DECAY], COLLIDING BEAMS: ELECTRON POSITRON, SPECTRUM [TRANSVERSE MOMENTUM], GLUON: FRAGMENTATION, PAIR PRODUCTION [QUARK ANTIQUARK], JET: ELECTROPRODUCTION, DESY DORIS STOR, SPECTRUM [RAPIDITY], ELECTRON POSITRON [COLLIDING BEAMS], TRANSVERSE MOMENTUM [SPECTRUM], 7.70: 9.40: 9.45: 13.00: 17.00 GEV-CM [3.10-5.00], QUARK ANTIQUARK: PAIR PRODUCTION, RAPIDITY: SPECTRUM, ELECTRON POSITRON: ANNIHILATION, SPECTRUM: RAPIDITY
Abstract

30 pp. (1979).

Published
1979

27. Evidence on the gluon

Author

P. Söding

Subjects
(2JET): FINAL STATE, CORRECTION [QUANTUM CHROMODYNAMICS], HADRONIC DECAY [UPSILON(9460)], High Energy Physics::Lattice, Electron–positron annihilation, EXPERIMENTAL RESULTS [REVIEW], Continuum (design consultancy), BIBLIOGRAPHY, DESY PETRA STOR, Jet (particle physics), +%28N%29HADRON%22">UPSILON(9460) --> (N)HADRON, (3JET): FINAL STATE, MULTIPLE PRODUCTION: HADRON, ASYMMETRY [SPECTRUM], ELECTROPRODUCTION: UPSILON(9460), EFFECT: HIGHER-TWIST, JET: ENERGY FLOW, JET [GLUON], Bibliography, ENERGY DEPENDENCE: TOTAL CROSS SECTION, UPSILON(9460): HADRONIC DECAY, THRUST [JET], JET: THRUST, ELECTROPRODUCTION [UPSILON(9460)], ENERGY DEPENDENCE [TOTAL CROSS SECTION], Physics, Quantum chromodynamics, TOTAL CROSS SECTION: ENERGY DEPENDENCE, CORRELATION [ENERGY], +%28N%29HADRON%22">ELECTRON POSITRON --> (N)HADRON, JET [ELECTROPRODUCTION], FINAL STATE: (3JET), COLLIDING BEAMS [ELECTRON POSITRON], HADRON [MULTIPLE PRODUCTION], ELECTROPRODUCTION: JET, ANNIHILATION: ELECTRON POSITRON, TRANSVERSE MOMENTUM: DIFFERENTIAL CROSS SECTION, JET [ANGULAR CORRELATION], UPSILON(9460): ELECTROPRODUCTION, JET: SPHERICITY, FINAL STATE [(3JET)], SPHERICITY [JET], RATIO [TOTAL CROSS SECTION], DALITZ PLOT [MULTIDIMENSIONAL ANALYSIS], Short distance, ELECTRON POSITRON: COLLIDING BEAMS, ENERGY: CORRELATION, ELECTRON POSITRON [ANNIHILATION], REVIEW: EXPERIMENTAL RESULTS, +UPSILON%289460%29%22">ELECTRON POSITRON --> UPSILON(9460), ENERGY FLOW [JET], FINAL STATE: (2JET), ANNIHILATION [ELECTRON POSITRON], ELECTROPRODUCTION [JET], MULTIDIMENSIONAL ANALYSIS: DALITZ PLOT, ANGULAR DISTRIBUTION, MULTIPLE PRODUCTION [HADRON], JET [QUARK], Particle physics, RATIO: TOTAL CROSS SECTION, HIGHER-TWIST [EFFECT], TOTAL CROSS SECTION [RATIO], TRANSVERSE MOMENTUM [DIFFERENTIAL CROSS SECTION], ASYMMETRY: SPECTRUM, (2JET) [FINAL STATE], Nuclear physics, DIFFERENTIAL CROSS SECTION: TRANSVERSE MOMENTUM, (3JET) [FINAL STATE], TOTAL CROSS SECTION [ENERGY DEPENDENCE], Angular distribution, QUANTUM CHROMODYNAMICS: CORRECTION, SPECTRUM [ASYMMETRY], ANGULAR CORRELATION: JET, FINAL STATE [(2JET)], GLUON: JET, TOTAL CROSS SECTION: RATIO, UPSILON(9460) [HADRONIC DECAY], COLLIDING BEAMS: ELECTRON POSITRON, QUARK: JET, JET: ELECTROPRODUCTION, High Energy Physics::Phenomenology, HADRON: MULTIPLE PRODUCTION, ELECTRON POSITRON [COLLIDING BEAMS], SPECTRUM: ASYMMETRY, Gluon, UPSILON(9460) [ELECTROPRODUCTION], DIFFERENTIAL CROSS SECTION [TRANSVERSE MOMENTUM], High Energy Physics::Experiment, HADRONIC DECAY: UPSILON(9460), ELECTRON POSITRON: ANNIHILATION
Abstract

Gluons 28 pp. (1981)., The production of hard noncollinear gluons in short distance processes is disussed, with emphasis on recent results from e+e− interactions. The jet phenomena observed in the e+e− continuum and in Υ decay are consistently described as due to the emission of QCD gluons while alternative explanations fail. The vector and color‐nonsinglet nature of the radiated quanta is directly verified.

Published
1981
Full Text
View/download PDF

28. SELECTED TOPICS IN e+ e- PHYSICS

Author

Wu, Sau Lan

Subjects
D: LIFETIME, HIGH [TRANSVERSE MOMENTUM], RADIATIVE DECAY: J/PSI(3100), CHARGED PARTICLE: MULTIPLICITY, (4JET): FINAL STATE, TWO-PHOTON: EXCHANGE, ANNIHILATION: ELECTRON POSITRON, JET: SPHERICITY, CHARMED PARTICLE: ELECTROPRODUCTION, PHOTON PHOTON: INTERACTION, SPHERICITY [JET], ELECTRON POSITRON [ANNIHILATION], ANNIHILATION [ELECTRON POSITRON], ELECTROPRODUCTION [UPSILON MESONS], JET [QUARK], ELECTRON POSITRON [INELASTIC SCATTERING], TAU: ELECTROPRODUCTION, MASS: UPSILON(10570), UPSILON(10570): MASS, INTERACTION: PHOTON PHOTON, (4ET): FINAL STATE, COUPLING CONSTANT: STRONG INTERACTION, UPSILON(10570) [DECAY WIDTH], ddc:530, DECAY WIDTH: UPSILON(10570), STRONG INTERACTION [COUPLING CONSTANT], COLLIDING BEAMS: ELECTRON POSITRON, ELECTROPRODUCTION [TAU], TWO-PHOTON [EXCHANGE], JET: ELECTROPRODUCTION, UPSILON(10570): DECAY WIDTH, J/PSI(3100) [RADIATIVE DECAY], FINAL STATE: (4JET), DECAY MODES [TAU], ELECTRON POSITRON [COLLIDING BEAMS], UPSILON(10570) [NEW PARTICLE], EXCHANGE: TWO-PHOTON, CHARMED PARTICLE [ELECTROPRODUCTION], STRONG INTERACTION: COUPLING CONSTANT, (4ET) [FINAL STATE], ELECTROPRODUCTION [CHARMED PARTICLE], DECAY MODES: TAU, TAU: DECAY MODES, UPSILON(10570) [MASS], ELECTRON POSITRON: ANNIHILATION, FINAL STATE: (4ET), TAU [ELECTROPRODUCTION], EXPERIMENTAL RESULTS [REVIEW], DECAY WIDTH [UPSILON(10570)], BIBLIOGRAPHY, INTERACTION [PHOTON PHOTON], JET [GLUON], ELECTROPRODUCTION: UPSILON MESONS, GLUON [SPIN], THRUST [JET], MASS [UPSILON(10570)], FINAL STATE [(4ET)], JET: THRUST, MULTIPLE PRODUCTION [FRAGMENTATION], ELECTROPRODUCTION: CHARMED PARTICLE, SPIN: GLUON, POSTULATED PARTICLE: ETA(C), INELASTIC SCATTERING: ELECTRON POSITRON, FRAGMENTATION [MULTIPLE PRODUCTION], JET [ELECTROPRODUCTION], EXCHANGE [TWO-PHOTON], ELECTROPRODUCTION: JET, COLLIDING BEAMS [ELECTRON POSITRON], MULTIPLICITY [CHARGED PARTICLE], INELASTIC SCATTERING [ELECTRON POSITRON], RADIATIVE DECAY [J/PSI(3100)], ELECTRON POSITRON: COLLIDING BEAMS, RATIO [TOTAL CROSS SECTION], FRAGMENTATION: MULTIPLE PRODUCTION, REVIEW: EXPERIMENTAL RESULTS, ETA(C) [POSTULATED PARTICLE], ELECTROPRODUCTION [JET], PERTURBATION THEORY [QUANTUM CHROMODYNAMICS], MULTIPLE PRODUCTION: FRAGMENTATION, (4JET) [FINAL STATE], SPIN [GLUON], J/PSI(3100): RADIATIVE DECAY, VECTOR DOMINANCE [MODEL], RATIO: TOTAL CROSS SECTION, LECTURES, TOTAL CROSS SECTION [RATIO], ELECTRON POSITRON: INELASTIC SCATTERING, COUPLING CONSTANT [STRONG INTERACTION], bottom, NEW PARTICLE: UPSILON(10570), ELECTROPRODUCTION: TAU, TAU [DECAY MODES], GLUON: JET, TOTAL CROSS SECTION: RATIO, STRUCTURE FUNCTION [PHOTON], GLUON: SPIN, QUARK: JET, QUANTUM CHROMODYNAMICS: PERTURBATION THEORY, TRANSVERSE MOMENTUM: HIGH, MODEL: QUARK PARTON, QUARK PARTON [MODEL], FINAL STATE [(4JET)], MODEL: VECTOR DOMINANCE, PHOTON: STRUCTURE FUNCTION, LIFETIME [D], PHOTON PHOTON [INTERACTION], UPSILON MESONS: ELECTROPRODUCTION, UPSILON MESONS [ELECTROPRODUCTION]
Abstract

(1982). doi:10.1088/0031-8949/25/1B/011, Selected topics of recent experimental results from the high-energy electron-position storage rings are presented. The topics include some of the τ and charm physics from SPEAR, the upsilon physics from DORIS and CESR, and the γγ physics and quark and gluon physics from the PLUTO and TASSO Collaborations at PETRA. Related data from the JADE and MARK J Collaborations at PETRA are discussed in separate papers at this School.

Published
1981

29. SEARCH FOR NEW PARTICLES AT PETRA

Author

Bohm, Albrecht

Subjects
VALIDITY TEST [QUANTUM CHROMODYNAMICS], SEARCH FOR: EXCITED ELECTRON, LEPTON: EXCITED STATE, EXPERIMENTAL RESULTS [REVIEW], TECHNIPION [SEARCH FOR], < 36.7 GEV-CMS, DESY PETRA STOR, BIBLIOGRAPHY, SEARCH FOR: TECHNIPION, SEARCH FOR [HEAVY LEPTON], SEARCH FOR [top], SLEPTON [POSTULATED PARTICLE], PLUTO, EXCITED STATE [LEPTON], TASSO, ENERGY DEPENDENCE: TOTAL CROSS SECTION, SEARCH FOR: EXCITED MUON, THRUST [JET], SUPERSYMMETRY [POSTULATED PARTICLE], POSTULATED PARTICLE: TECHNIPION, JET: THRUST, TOTAL CROSS SECTION: ENERGY DEPENDENCE, ENERGY DEPENDENCE [TOTAL CROSS SECTION], EXCITED LEPTON: MASS, SEARCH FOR: FRACTIONALLY CHARGED, MASS [BOUNDARY CONDITION], BOUNDARY CONDITION: MASS, SEARCH FOR: HIGGS PARTICLE, COLLIDING BEAMS [ELECTRON POSITRON], HIGGS PARTICLE [SEARCH FOR], ANNIHILATION: ELECTRON POSITRON, ELECTRON POSITRON: COLLIDING BEAMS, REVIEW: EXPERIMENTAL RESULTS, ELECTRON POSITRON [ANNIHILATION], top: SEARCH FOR, QUANTUM CHROMODYNAMICS: VALIDITY TEST, ANNIHILATION [ELECTRON POSITRON], EXCITED ELECTRON [SEARCH FOR], MASS SPECTRUM [(MUON PHOTON)], SEARCH FOR [HIGGS PARTICLE], EXCITED MUON [SEARCH FOR], CROSS SECTION: HADRONIC, POSTULATED PARTICLE: SUPERSYMMETRY, RATIO: TOTAL CROSS SECTION, HADRONIC [CROSS SECTION], CHARGED PARTICLE: HIGGS PARTICLE, TOTAL CROSS SECTION [RATIO], POSTULATED PARTICLE: SLEPTON, MASS SPECTRUM: (MUON PHOTON), TOTAL CROSS SECTION [ENERGY DEPENDENCE], MASS: EXCITED LEPTON, COLLIDING BEAMS: ELECTRON POSITRON, HIGGS PARTICLE: SEARCH FOR, FRACTIONALLY CHARGED [SEARCH FOR], TECHNIPION [POSTULATED PARTICLE], MASS [EXCITED LEPTON], EXCITED LEPTON [MASS], (MUON PHOTON): MASS SPECTRUM, 33-37 GEV-CMS, ELECTRON POSITRON [COLLIDING BEAMS], (MUON PHOTON) [MASS SPECTRUM], HEAVY LEPTON: SEARCH FOR, JADE, BOUNDARY CONDITION [MASS], MARK J, CELLO, HIGGS PARTICLE [CHARGED PARTICLE], MASS: BOUNDARY CONDITION, ELECTRON POSITRON: ANNIHILATION
Abstract

12 pp. (1982).

Published
1982

30. THEORY OF JETS IN ELECTRON - POSITRON ANNIHILATION

Author

Kramer, Gustav

Subjects
DIFFERENTIAL CROSS SECTION: X-DEPENDENCE, FRAGMENTATION [QUARK], GLUON: BREMSSTRAHLUNG, RENORMALIZATION, MODEL: PARTON, (3JET): FINAL STATE, MULTIPLE PRODUCTION: HADRON, GLUON: SCALAR, THRUST [JET], (4JET): FINAL STATE, JET: THRUST, GLUON [BREMSSTRAHLUNG], POLARIZED BEAM, JET [ELECTROPRODUCTION], FINAL STATE: (3JET), HADRON [MULTIPLE PRODUCTION], ELECTROPRODUCTION: JET, ANNIHILATION: ELECTRON POSITRON, FINAL STATE [(3JET)], ELECTRON POSITRON [ANNIHILATION], FRAGMENTATION [GLUON], ANNIHILATION [ELECTRON POSITRON], ELECTROPRODUCTION [JET], PERTURBATION THEORY [QUANTUM CHROMODYNAMICS], X-DEPENDENCE [DIFFERENTIAL CROSS SECTION], (4JET) [FINAL STATE], QUARK: FRAGMENTATION, ANGULAR DISTRIBUTION, MULTIPLE PRODUCTION [HADRON], BREMSSTRAHLUNG: GLUON, COUPLING CONSTANT [STRONG INTERACTION], X-DEPENDENCE: DIFFERENTIAL CROSS SECTION, BREMSSTRAHLUNG [GLUON], (3JET) [FINAL STATE], +QUARK+ANTIQUARK+GLUON%22">ELECTRON POSITRON --> QUARK ANTIQUARK GLUON, COUPLING CONSTANT: STRONG INTERACTION, STRONG INTERACTION [COUPLING CONSTANT], GLUON: FRAGMENTATION, JET: ELECTROPRODUCTION, DIFFERENTIAL CROSS SECTION [X-DEPENDENCE], FINAL STATE: (4JET), QUANTUM CHROMODYNAMICS: PERTURBATION THEORY, HADRON: MULTIPLE PRODUCTION, SCALAR [GLUON], FINAL STATE [(4JET)], HADRON: MULTIPLICITY, TOTAL CROSS SECTION, STRONG INTERACTION: COUPLING CONSTANT, MULTIPLICITY [HADRON], PARTON [MODEL], ELECTRON POSITRON: ANNIHILATION
Abstract

231 pp. (1983).

Published
1983
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31. RECENT e+ e- RESULTS FROM PETRA

Author

Sau Lan Wu

Subjects
PAIR PRODUCTION [MUON], DIFFERENTIAL CROSS SECTION [MOMENTUM], EXPERIMENTAL RESULTS [REVIEW], +ANTI-P+ANYTHING%22">ELECTRON POSITRON --> ANTI-P ANYTHING, Z0 [POSTULATED PARTICLE], DESY PETRA STOR, BIBLIOGRAPHY, RATIO [CHANNEL CROSS SECTION], ELECTROPRODUCTION [P], ANGULAR DEPENDENCE [DIFFERENTIAL CROSS SECTION], HIGH [TRANSVERSE MOMENTUM], JET [GLUON], GLUON [SPIN], +P+ANYTHING%22">ELECTRON POSITRON --> P ANYTHING, THRUST [JET], ELECTROPRODUCTION [LAMBDA], (JET) [MASS SPECTRUM], 30-36 GEV-CMS [12], UPPER LIMIT [LIFETIME], ELECTROPRODUCTION [ANTILAMBDA], EXCHANGE [Z0], JET [ELECTROPRODUCTION], EXCHANGE [TWO-PHOTON], COLLIDING BEAMS [ELECTRON POSITRON], Weinberg angle, INELASTIC SCATTERING [ELECTRON POSITRON], MULTIPLICITY [CHARGED PARTICLE], MOMENTUM [DIFFERENTIAL CROSS SECTION], ANTI-P [ELECTROPRODUCTION], RAPIDITY [SPECTRUM], FINAL STATE [(3JET)], ELECTRON POSITRON [ANNIHILATION], +2PI%2B+2PI-+POSITRON+ELECTRON%22">ELECTRON POSITRON --> 2PI+ 2PI- POSITRON ELECTRON, ENERGY FLOW [JET], ANNIHILATION [ELECTRON POSITRON], +%28N%29HADRON+POSITRON+ELECTRON%22">ELECTRON POSITRON --> (N)HADRON POSITRON ELECTRON, ELECTROPRODUCTION [JET], X-DEPENDENCE [DIFFERENTIAL CROSS SECTION], LIFETIME [BOTTOM MESON], SPIN [GLUON], (NEUTRAL PARTICLE) [ENERGY SPECTRUM], Z0 [EXCHANGE], JET [QUARK], ELECTRON POSITRON [INELASTIC SCATTERING], PRODUCTION [ASYMMETRY], DIFFERENTIAL CROSS SECTION [ANGULAR DEPENDENCE], CHARGE [CORRELATION], LIFETIME [TAU], (2JET) [FINAL STATE], MASS SPECTRUM [(P PI)], (3JET) [FINAL STATE], LAMBDA [ELECTROPRODUCTION], +2RHO%28770%290+POSITRON+ELECTRON%22">ELECTRON POSITRON --> 2RHO(770)0 POSITRON ELECTRON, FINAL STATE [(2JET)], MASS SPECTRUM [(JET)], ASYMMETRY [PRODUCTION], STRUCTURE FUNCTION [PHOTON], +LAMBDA+ANYTHING%22">ELECTRON POSITRON --> LAMBDA ANYTHING, ENERGY SPECTRUM [(NEUTRAL PARTICLE)], TWO-PHOTON [EXCHANGE], DIFFERENTIAL CROSS SECTION [X-DEPENDENCE], SPECTRUM [RAPIDITY], ELECTRON POSITRON [COLLIDING BEAMS], INCLUSIVE REACTION [ELECTRON POSITRON], RHO(770)0 [PAIR PRODUCTION], ELECTROPRODUCTION [ANTI-P], MUON [PAIR PRODUCTION], +ANTILAMBDA+ANYTHING%22">ELECTRON POSITRON --> ANTILAMBDA ANYTHING, P [ELECTROPRODUCTION], (P PI) [MASS SPECTRUM], PAIR PRODUCTION [RHO(770)0], ANTILAMBDA [ELECTROPRODUCTION], ENERGY DEPENDENCE [CHANNEL CROSS SECTION]

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