Search

Your search keyword '"X-DEPENDENCE: DIFFERENTIAL CROSS SECTION"' showing total 11 results
Start Over Descriptor "X-DEPENDENCE: DIFFERENTIAL CROSS SECTION" Topic electron positron: annihilation
11 results on '"X-DEPENDENCE: DIFFERENTIAL CROSS SECTION"'

1. Recent Results from PETRA on R, on Hadronic Final States and on Inclusive Hadron Spectra

Author

Felst, Rolf-Dieter

Subjects
ELECTROPRODUCTION: LAMBDA, DIFFERENTIAL CROSS SECTION: X-DEPENDENCE, EXPERIMENTAL RESULTS [REVIEW], K0 [PAIR PRODUCTION], DESY PETRA STOR, ELECTROPRODUCTION [K0], HADRON: ELECTROPRODUCTION, SPECTRUM [INCLUSIVE REACTION], ELECTROPRODUCTION [HADRON], PAIR PRODUCTION [K0], INCLUSIVE REACTION [SPECTRUM], ELECTROPRODUCTION: HADRON, CHARGED PARTICLE: MULTIPLICITY, K0 [ELECTROPRODUCTION], ELECTROPRODUCTION [LAMBDA], HADRON [ELECTROPRODUCTION], QUANTUM CHROMODYNAMICS, ELECTRON POSITRON: INCLUSIVE REACTION, COLLIDING BEAMS [ELECTRON POSITRON], MULTIPLICITY [CHARGED PARTICLE], ANNIHILATION: ELECTRON POSITRON, ELECTRON POSITRON: COLLIDING BEAMS, RATIO [TOTAL CROSS SECTION], REVIEW: EXPERIMENTAL RESULTS, ELECTRON POSITRON [ANNIHILATION], ELECTROPRODUCTION: K0, K0: PAIR PRODUCTION, ANNIHILATION [ELECTRON POSITRON], WEINBERG ANGLE [WEAK INTERACTION], K0: ELECTROPRODUCTION, X-DEPENDENCE [DIFFERENTIAL CROSS SECTION], WEAK INTERACTION [WEINBERG ANGLE], NEUTRAL CURRENT, RATIO: TOTAL CROSS SECTION, TOTAL CROSS SECTION [RATIO], COUPLING CONSTANT [STRONG INTERACTION], X-DEPENDENCE: DIFFERENTIAL CROSS SECTION, COUPLING CONSTANT: STRONG INTERACTION, LAMBDA [ELECTROPRODUCTION], TOTAL CROSS SECTION: RATIO, LUMINOSITY: ENERGY DEPENDENCE, STRONG INTERACTION [COUPLING CONSTANT], COLLIDING BEAMS: ELECTRON POSITRON, KNO [SCALING], PAIR PRODUCTION: K0, DIFFERENTIAL CROSS SECTION [X-DEPENDENCE], INCLUSIVE REACTION: SPECTRUM, WEAK INTERACTION: WEINBERG ANGLE, ENERGY DEPENDENCE [LUMINOSITY], SCALING: KNO, SPECTRUM: INCLUSIVE REACTION, ELECTRON POSITRON [COLLIDING BEAMS], INCLUSIVE REACTION [ELECTRON POSITRON], WEINBERG ANGLE: WEAK INTERACTION, STRONG INTERACTION: COUPLING CONSTANT, 12.0-36.8 GEV-CMS, LAMBDA: ELECTROPRODUCTION, ELECTRON POSITRON: ANNIHILATION
Abstract

15 pp. (1981).

Published
1981
Full Text
View/download PDF

2. Inklusive Erzeugung Geladener Pionen in der $e^{+} e^{-}$-Annihilation

Author

Riethmüller, Rolf

Subjects
DIFFERENTIAL CROSS SECTION: X-DEPENDENCE, DIFFERENTIAL CROSS SECTION [MOMENTUM], INCLUSIVE REACTION: DIFFERENTIAL CROSS SECTION, CHERENKOV COUNTER: AEROGEL, BIBLIOGRAPHY, DESY PETRA STOR, DIFFERENTIAL CROSS SECTION: ENERGY DEPENDENCE, +PI-+ANYTHING%22">ELECTRON POSITRON --> PI- ANYTHING, ELECTROPRODUCTION: PI, ELECTROPRODUCTION [PI-], ELECTROPRODUCTION: PI+, DIFFERENTIAL CROSS SECTION: MOMENTUM, THESIS, TASSO, PI-: ELECTROPRODUCTION, DIFFERENTIAL CROSS SECTION [ENERGY DEPENDENCE], MOMENTUM: DIFFERENTIAL CROSS SECTION, PI+: ELECTROPRODUCTION, +PI%2B+ANYTHING%22">ELECTRON POSITRON --> PI+ ANYTHING, PARTICLE IDENTIFICATION [HADRON], COLLIDING BEAMS [ELECTRON POSITRON], DIFFERENTIAL CROSS SECTION [INCLUSIVE REACTION], ELECTRON POSITRON: INCLUSIVE REACTION, MOMENTUM [DIFFERENTIAL CROSS SECTION], ANNIHILATION: ELECTRON POSITRON, MULTIPLICITY [PI], ELECTRON POSITRON: COLLIDING BEAMS, ELECTRON POSITRON [ANNIHILATION], ANNIHILATION [ELECTRON POSITRON], X-DEPENDENCE [DIFFERENTIAL CROSS SECTION], AEROGEL [CHERENKOV COUNTER], PI+ [ELECTROPRODUCTION], INCLUSIVE REACTION [DIFFERENTIAL CROSS SECTION], ENERGY DEPENDENCE: DIFFERENTIAL CROSS SECTION, PI- [ELECTROPRODUCTION], ELECTROPRODUCTION [PI+], X-DEPENDENCE: DIFFERENTIAL CROSS SECTION, DIFFERENTIAL CROSS SECTION: INCLUSIVE REACTION, COLLIDING BEAMS: ELECTRON POSITRON, PI: MULTIPLICITY, EXPERIMENTAL RESULTS, HADRON: PARTICLE IDENTIFICATION, DIFFERENTIAL CROSS SECTION [X-DEPENDENCE], 14.0-36.7 GEV-CMS, ELECTRON POSITRON [COLLIDING BEAMS], INCLUSIVE REACTION [ELECTRON POSITRON], ENERGY DEPENDENCE [DIFFERENTIAL CROSS SECTION], ELECTRON POSITRON: ANNIHILATION
Abstract

88 pp. (1982).

Published
1982
Full Text
View/download PDF

3. 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
Full Text
View/download PDF

4. QUARK FRAGMENTATION IN e+ e- JETS

Author

Mattig, Peter

Subjects
DIFFERENTIAL CROSS SECTION: X-DEPENDENCE, FRAGMENTATION [QUARK], DESY PETRA STOR, TALK, X-DEPENDENCE: DIFFERENTIAL CROSS SECTION, JET: RAPIDITY, CORRELATION [MULTIPLICITY], TASSO, COLLIDING BEAMS: ELECTRON POSITRON, EXPERIMENTAL RESULTS, CHARGED PARTICLE: MULTIPLICITY, SPECTRUM [TRANSVERSE MOMENTUM], 22: 34 GEV-CMS [14], KNO [SCALING], JET: ELECTROPRODUCTION, DIFFERENTIAL CROSS SECTION [X-DEPENDENCE], JET [ELECTROPRODUCTION], ELECTRON POSITRON: INCLUSIVE REACTION, ELECTROPRODUCTION: JET, COLLIDING BEAMS [ELECTRON POSITRON], MULTIPLICITY: CORRELATION, SCALING: KNO, MULTIPLICITY [CHARGED PARTICLE], ANNIHILATION: ELECTRON POSITRON, JET: SPHERICITY, ELECTRON POSITRON [COLLIDING BEAMS], INCLUSIVE REACTION [ELECTRON POSITRON], ELECTRON POSITRON: COLLIDING BEAMS, SPHERICITY [JET], ELECTRON POSITRON [ANNIHILATION], TRANSVERSE MOMENTUM [SPECTRUM], 14: 22: 34 GEV-CMS, ANNIHILATION [ELECTRON POSITRON], RAPIDITY [JET], ELECTROPRODUCTION [JET], SPECTRUM: TRANSVERSE MOMENTUM, QUARK: FRAGMENTATION, X-DEPENDENCE [DIFFERENTIAL CROSS SECTION], TRANSVERSE MOMENTUM: SPECTRUM, ELECTRON POSITRON: ANNIHILATION
Abstract

19 pp. (1983).

Published
1983
Full Text
View/download PDF

5. The hadronic final state in $e^{+}e^{-}$ annihilation at c.m. energies of 13, 17 and 27.4 GeV

Author

Cashmore, R. J., Brandelik, R., Sander, H. G., Schmitz, D., Schultz von Dratzig, A., Trines, D., Wallraff, W., Boerner, H., Fischer, H. M., Hartmann, H., Hilger, E., Hillen, W., Braunschweig, W., Knop, G., Korbach, W., Lohr, B., Roth, F., Ruhmer, W., Wedemeyer, R., Wermes, N., Wollstadt, M., Buhring, R., Heyland, D., Gather, K., Hultschig, H., Joos, P., Koch, W., Kotz, U., Kowalski, H., Ladage, A., Luke, D., Lynch, H. L., Mikenberg, G., Notz, D., Jaax, B., Pyrlik, J., Riethmuller, R., Schliwa, M., Soding, P., Wiik, B. H., Wolf, G., Fohrmann, R., Poelz, G., Ringel, J., Romer, O., Kadansky, V., Rusch, R., Schmueser, Peter, Binnie, D. M., Dornan, P. J., Downie, N. A., Garbutt, D. A., Jones, W. G., Lloyd, S. L., Pandoulas, D., Youngman, C., Lubelsmeyer, K., Barlow, Roger J., Illingworth, J., Ogg, M., Salmon, G. L., Bell, Kenneth Watson, Chinowsky, W., Foster, B., Hart, J. C., Proudfoot, J., Quarrie, D. R., Martyn, H. U., Saxon, D. H., Woodworth, P. L., TASSO Collaboration, Peise, G., and Rimkus, J.

Subjects
DIFFERENTIAL CROSS SECTION: X-DEPENDENCE, 13.0: 17.0: 27.4 GEV-CM, High Energy Physics::Lattice, DESY PETRA STOR, DIFFERENTIAL CROSS SECTION: ENERGY DEPENDENCE, HADRON: ELECTROPRODUCTION, MULTIPLE PRODUCTION: HADRON, ELECTROPRODUCTION [HADRON], TASSO, ENERGY DEPENDENCE: TOTAL CROSS SECTION, DIFFERENTIAL CROSS SECTION [ENERGY DEPENDENCE], ELECTROPRODUCTION: HADRON, Nuclear Experiment, ENERGY DEPENDENCE [TOTAL CROSS SECTION], TOTAL CROSS SECTION: ENERGY DEPENDENCE, HADRON [ELECTROPRODUCTION], JET [ELECTROPRODUCTION], COLLIDING BEAMS [ELECTRON POSITRON], HADRON [MULTIPLE PRODUCTION], ELECTRON POSITRON: INCLUSIVE REACTION, ELECTROPRODUCTION: JET, ANNIHILATION: ELECTRON POSITRON, TRANSVERSE MOMENTUM: DIFFERENTIAL CROSS SECTION, JET: SPHERICITY, RATIO [TOTAL CROSS SECTION], SPHERICITY [JET], ELECTRON POSITRON: COLLIDING BEAMS, ONE-PARTICLE: SPECTRUM, ELECTRON POSITRON [ANNIHILATION], SPECTRUM: ONE-PARTICLE, 17.0: 27.4 GEV-CM [13.0], ANNIHILATION [ELECTRON POSITRON], ELECTROPRODUCTION [JET], X-DEPENDENCE [DIFFERENTIAL CROSS SECTION], MULTIPLE PRODUCTION [HADRON], ENERGY DEPENDENCE: DIFFERENTIAL CROSS SECTION, RATIO: TOTAL CROSS SECTION, TOTAL CROSS SECTION [RATIO], TRANSVERSE MOMENTUM [DIFFERENTIAL CROSS SECTION], X-DEPENDENCE: DIFFERENTIAL CROSS SECTION, DIFFERENTIAL CROSS SECTION: TRANSVERSE MOMENTUM, TOTAL CROSS SECTION [ENERGY DEPENDENCE], TOTAL CROSS SECTION: RATIO, COLLIDING BEAMS: ELECTRON POSITRON, EXPERIMENTAL RESULTS, Particle Physics - Phenomenology, ONE-PARTICLE [SPECTRUM], JET: ELECTROPRODUCTION, DIFFERENTIAL CROSS SECTION [X-DEPENDENCE], High Energy Physics::Phenomenology, MULTIPLICITY, HADRON: MULTIPLE PRODUCTION, ELECTRON POSITRON [COLLIDING BEAMS], INCLUSIVE REACTION [ELECTRON POSITRON], ENERGY DEPENDENCE [DIFFERENTIAL CROSS SECTION], SPECTRUM [ONE-PARTICLE], High Energy Physics::Experiment, DIFFERENTIAL CROSS SECTION [TRANSVERSE MOMENTUM], ELECTRON POSITRON: ANNIHILATION
Abstract

10 pp. (1979)., Results on the hadronic final state in e/sup +/e/sup -/ annihilation at 13, 17 and 27.4 GeV are presented. There is no compelling evidence for the existence of the t quark in these data, which are in general agreement with a simple quark parton model. Some tentative indications of QCD effects are observed in the p/sub T//sup 2/ distributions.

Published
1979
Full Text
View/download PDF

6. CHARMED QUARK FRAGMENTATION INTO CHARMED HADRONS

Author

Jones, L. M. and Migneron, R.

Subjects
DIFFERENTIAL CROSS SECTION: X-DEPENDENCE, FRAGMENTATION [QUARK], MODEL: PRODUCTION, ELECTROPRODUCTION [LAMBDA/C(2260)], High Energy Physics::Lattice, Nuclear Theory, LAMBDA/C(2260) [ELECTROPRODUCTION], X-DEPENDENCE: DIFFERENTIAL CROSS SECTION, DEPENDENCE: MOMENTUM TRANSFER, PRODUCTION [RATIO], D: ELECTROPRODUCTION, X-DEPENDENCE [FRAGMENTATION FUNCTION], QUARK: CHARM, JET: PARTON, NUMERICAL CALCULATIONS, MODEL: QUARK RECOMBINATION, RATIO [PRODUCTION], ddc:530, ELECTROPRODUCTION [D], PRODUCTION: MODEL, Nuclear Experiment, PARTON [JET], DIFFERENTIAL CROSS SECTION [X-DEPENDENCE], PRODUCTION [MODEL], High Energy Physics::Phenomenology, ELECTROPRODUCTION: LAMBDA/C(2260), ANNIHILATION: ELECTRON POSITRON, RATIO: PRODUCTION, FRAGMENTATION FUNCTION: X-DEPENDENCE, QUARK RECOMBINATION [MODEL], ELECTRON POSITRON [ANNIHILATION], MOMENTUM TRANSFER [DEPENDENCE], MODEL [PRODUCTION], ANNIHILATION [ELECTRON POSITRON], LAMBDA/C(2260): ELECTROPRODUCTION, High Energy Physics::Experiment, X-DEPENDENCE [DIFFERENTIAL CROSS SECTION], QUARK: FRAGMENTATION, PRODUCTION: RATIO, D [ELECTROPRODUCTION], CHARM [QUARK], ELECTRON POSITRON: ANNIHILATION, ELECTROPRODUCTION: D
Abstract

(1983). doi:10.1103/PhysRevD.27.2063, We show that in a model where fragmentation functions are created from jet calculus followed by recombination, the fragmentation function of charmed quarks into D mesons will fail to peak at low x at currently accessible values of Q2. Likewise, the fragmentation of a c quark into a Λc is much less peaked toward small x than the production of protons by u quarks. The model predicts a magnitude for the fragmentation function much smaller than is experimentally observed.

Published
1982
Full Text
View/download PDF

7. 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
View/download PDF

8. Recent Results from TASSO at PETRA

Author

Lüke, Dieter and TASSO Collaboration

Subjects
ELECTROPRODUCTION: LAMBDA, DIFFERENTIAL CROSS SECTION: X-DEPENDENCE, BRANCHING RATIO [F(1515)], PAIR PRODUCTION [LEPTON], DESY PETRA STOR, DIFFERENTIAL CROSS SECTION: ENERGY DEPENDENCE, MASS SPECTRUM [(2K0(S))], MASS SPECTRUM: (2PI+ 2PI-), ANGULAR DEPENDENCE [DIFFERENTIAL CROSS SECTION], DIFFERENTIAL CROSS SECTION [ENERGY DEPENDENCE], (K+ K-) [MASS SPECTRUM], K: ELECTROPRODUCTION, ELECTROPRODUCTION [K], TWO-PHOTON: EXCHANGE, MASS ENHANCEMENT: (2100), SEARCH FOR: HIGGS PARTICLE, PI: ELECTROPRODUCTION, ANNIHILATION: ELECTRON POSITRON, PHOTON PHOTON: INTERACTION, ELECTRON POSITRON [ELASTIC SCATTERING], ELECTRON POSITRON [ANNIHILATION], ELECTROPRODUCTION: P, ELECTROPRODUCTION: K, ELASTIC SCATTERING [ELECTRON POSITRON], ANNIHILATION [ELECTRON POSITRON], 12.0-14.0: 22.0-36.7 GEV-CMS, CHARGED PARTICLE [D*(2010)], X-DEPENDENCE [DIFFERENTIAL CROSS SECTION], POSTULATED PARTICLE: HIGGS PARTICLE, ELECTRON POSITRON [INELASTIC SCATTERING], ENERGY DEPENDENCE: DIFFERENTIAL CROSS SECTION, ELECTROPRODUCTION [PI], 22.0-36.7 GEV-CMS [12.0-14.0], X-DEPENDENCE: DIFFERENTIAL CROSS SECTION, INTERACTION: PHOTON PHOTON, BOTTOM: SEMILEPTONIC DECAY, LAMBDA [ELECTROPRODUCTION], ELECTROMAGNETIC DECAY: F(1515), ddc:530, F(1515) [ELECTROMAGNETIC DECAY], (2PI+ 2PI-): MASS SPECTRUM, MASS SPECTRUM: (2K0(S)), COLLIDING BEAMS: ELECTRON POSITRON, PAIR PRODUCTION: LEPTON, TWO-PHOTON [EXCHANGE], DIFFERENTIAL CROSS SECTION [X-DEPENDENCE], LEPTON: PAIR PRODUCTION, ELECTRON POSITRON [COLLIDING BEAMS], ENERGY DEPENDENCE [DIFFERENTIAL CROSS SECTION], EXCHANGE: TWO-PHOTON, DIFFERENTIAL CROSS SECTION: ANGULAR DEPENDENCE, LAMBDA: ELECTROPRODUCTION, ELECTROPRODUCTION: RHO(770)0, P [ELECTROPRODUCTION], ELECTRON POSITRON: ANNIHILATION, ELECTROMAGNETIC DECAY [F(1515)], EXPERIMENTAL RESULTS [REVIEW], D*(2010) [ELECTROPRODUCTION], INTERACTION [PHOTON PHOTON], (2PI+ 2PI-) [MASS SPECTRUM], ELECTROPRODUCTION [P], BRANCHING RATIO [HIGGS PARTICLE], ELECTROPRODUCTION: PI, RHO(770)0: ELECTROPRODUCTION, TASSO, SEMILEPTONIC DECAY: BOTTOM, PI [ELECTROPRODUCTION], HIGGS PARTICLE [POSTULATED PARTICLE], MASS SPECTRUM [(2PI+ 2PI-)], POSTULATED PARTICLE: TECHNIPION, ELECTROPRODUCTION [LAMBDA], YIELD [CHARGED PARTICLE], INELASTIC SCATTERING: ELECTRON POSITRON, EXCHANGE [TWO-PHOTON], ELECTRON POSITRON: INCLUSIVE REACTION, COLLIDING BEAMS [ELECTRON POSITRON], INELASTIC SCATTERING [ELECTRON POSITRON], F(1515): BRANCHING RATIO, HIGGS PARTICLE [SEARCH FOR], (K+ K-): MASS SPECTRUM, ANGULAR DEPENDENCE: DIFFERENTIAL CROSS SECTION, ELECTRON POSITRON: COLLIDING BEAMS, REVIEW: EXPERIMENTAL RESULTS, CHARGED PARTICLE: YIELD, ELASTIC SCATTERING: ELECTRON POSITRON, ASYMMETRY [CHARGED PARTICLE], ELECTROPRODUCTION [D*(2010)], SEMILEPTONIC DECAY [BOTTOM], DIFFERENTIAL CROSS SECTION [ANGULAR DEPENDENCE], HIGGS PARTICLE: BRANCHING RATIO, D*(2010): ELECTROPRODUCTION, ELECTRON POSITRON: INELASTIC SCATTERING, ELECTRON POSITRON: ELASTIC SCATTERING, ELECTROPRODUCTION [RHO(770)0], MASS SPECTRUM: (K+ K-), P: ELECTROPRODUCTION, ENERGY DEPENDENCE [MULTIPLICITY], BOTTOM [SEMILEPTONIC DECAY], CHARGED PARTICLE: ASYMMETRY, TECHNIPION [POSTULATED PARTICLE], (2K0(S)) [MASS SPECTRUM], MULTIPLICITY: ENERGY DEPENDENCE, MASS ENHANCEMENT [(2100)], LEPTON [PAIR PRODUCTION], ELECTROPRODUCTION: D*(2010), D*(2010): CHARGED PARTICLE, INCLUSIVE REACTION [ELECTRON POSITRON], MASS SPECTRUM [(K+ K-)], K [ELECTROPRODUCTION], F(1515): ELECTROMAGNETIC DECAY, RHO(770)0 [ELECTROPRODUCTION], (2100) [MASS ENHANCEMENT], (2100): MASS ENHANCEMENT, (2K0(S)): MASS SPECTRUM, PHOTON PHOTON [INTERACTION]
Abstract

(1982). doi:10.1051/jphyscol:1982313, Without abstract

Published
1982
Full Text
View/download PDF

9. NEW RESULTS IN e+ e- ANNIHILATION FROM PETRA

Author

Schopper, H.

Subjects
(2JET): FINAL STATE, DIFFERENTIAL CROSS SECTION: X-DEPENDENCE, +MUON%2B+MUON%22">ELECTRON POSITRON --> MUON+ MUON, GLUON: BREMSSTRAHLUNG, CHANNEL CROSS SECTION [HADRONIC], SPECTRUM [SPHERICITY], DESY PETRA STOR, CHANNEL CROSS SECTION: HADRONIC, SEARCH FOR [top], SPECTRUM [THRUST], ANGULAR DEPENDENCE [DIFFERENTIAL CROSS SECTION], EXPERIMENTAL RESULTS: REVIEW, QUANTUM ELECTRODYNAMICS: VALIDITY TEST, TAU: PAIR PRODUCTION, CHARGED PARTICLE: MULTIPLICITY, TWO-PHOTON: EXCHANGE, ENERGY DEPENDENCE: CHANNEL CROSS SECTION, PAIR PRODUCTION: TAU, PAIR PRODUCTION [TAU], ANNIHILATION: ELECTRON POSITRON, FINAL STATE [(3JET)], ELECTRON POSITRON [ELASTIC SCATTERING], ELECTRON POSITRON [ANNIHILATION], ELASTIC SCATTERING [ELECTRON POSITRON], SPECTRUM: SPHERICITY, FINAL STATE: (2JET), ANNIHILATION [ELECTRON POSITRON], X-DEPENDENCE [DIFFERENTIAL CROSS SECTION], TRANSVERSE MOMENTUM: SPECTRUM, TRANSVERSE MOMENTUM [DIFFERENTIAL CROSS SECTION], X-DEPENDENCE: DIFFERENTIAL CROSS SECTION, DIFFERENTIAL CROSS SECTION: TRANSVERSE MOMENTUM, (3JET) [FINAL STATE], ANGULAR DISTRIBUTION [(JET)], Y-DEPENDENCE [DIFFERENTIAL CROSS SECTION], FINAL STATE [(2JET)], COLLIDING BEAMS: ELECTRON POSITRON, SPECTRUM: THRUST, TWO-PHOTON [EXCHANGE], DIFFERENTIAL CROSS SECTION [Y-DEPENDENCE], JET: ELECTROPRODUCTION, TOP: JET, DIFFERENTIAL CROSS SECTION [X-DEPENDENCE], VALIDITY TEST [QUANTUM ELECTRODYNAMICS], ELECTRON POSITRON [COLLIDING BEAMS], +TAU%2B+TAU%22">ELECTRON POSITRON --> TAU+ TAU, EXCHANGE: TWO-PHOTON, DIFFERENTIAL CROSS SECTION: ANGULAR DEPENDENCE, MUON [PAIR PRODUCTION], UNIVERSALITY [LEPTON], DIFFERENTIAL CROSS SECTION: Y-DEPENDENCE, ENERGY DEPENDENCE [CHANNEL CROSS SECTION], ELECTRON POSITRON: ANNIHILATION, PAIR PRODUCTION [MUON], EXPERIMENTAL RESULTS [REVIEW], THRUST: SPECTRUM, (3JET): FINAL STATE, Y-DEPENDENCE: DIFFERENTIAL CROSS SECTION, SPHERICITY [SPECTRUM], JET [GLUON], HADRONIC: CHANNEL CROSS SECTION, GLUON [BREMSSTRAHLUNG], (JET): ANGULAR DISTRIBUTION, SPHERICITY: SPECTRUM, ANGULAR DISTRIBUTION: (JET), JET [ELECTROPRODUCTION], EXCHANGE [TWO-PHOTON], HADRONIC [CHANNEL CROSS SECTION], FINAL STATE: (3JET), COLLIDING BEAMS [ELECTRON POSITRON], ELECTROPRODUCTION: JET, MULTIPLICITY [CHARGED PARTICLE], REVIEW [EXPERIMENTAL RESULTS], TRANSVERSE MOMENTUM: DIFFERENTIAL CROSS SECTION, ANGULAR DEPENDENCE: DIFFERENTIAL CROSS SECTION, RATIO [TOTAL CROSS SECTION], ELECTRON POSITRON: COLLIDING BEAMS, REVIEW: EXPERIMENTAL RESULTS, ELASTIC SCATTERING: ELECTRON POSITRON, top: SEARCH FOR, ELECTROPRODUCTION [JET], SPECTRUM: TRANSVERSE MOMENTUM, CHANNEL CROSS SECTION [ENERGY DEPENDENCE], BREMSSTRAHLUNG: GLUON, DIFFERENTIAL CROSS SECTION [ANGULAR DEPENDENCE], LEPTON: UNIVERSALITY, RATIO: TOTAL CROSS SECTION, TOTAL CROSS SECTION [RATIO], ELECTRON POSITRON: ELASTIC SCATTERING, MUON: PAIR PRODUCTION, CHANNEL CROSS SECTION: ENERGY DEPENDENCE, (2JET) [FINAL STATE], (JET) [ANGULAR DISTRIBUTION], BREMSSTRAHLUNG [GLUON], TAU [PAIR PRODUCTION], GLUON: JET, THRUST [SPECTRUM], TOTAL CROSS SECTION: RATIO, SPECTRUM [TRANSVERSE MOMENTUM], 17.0-31.6 GEV-CM, PAIR PRODUCTION: MUON, JET [TOP], TRANSVERSE MOMENTUM [SPECTRUM], DIFFERENTIAL CROSS SECTION [TRANSVERSE MOMENTUM]
Abstract

34 pp. (1979).

Published
1979
Full Text
View/download PDF

10. Charged Hadron Composition of the Final State in e+ e- Annihilation at High-Energies

Author

Althoff, M., Brandelik, R., Schmitz, D., Venkataramania, H., Wicklund, E., Wu, Sau Lan, Zobernig, G., TASSO Collaboration, Siebke, H., Trines, D., Wallraff, W., Boerner, H., Fischer, H. M., Hartmann, H., Hilger, E., Hillen, W., Knop, G., Braunschweig, W., Kopke, L., Kolanoski, H., Kuck, H., Wedemeyer, R., Wermes, N., Wollstadt, M., Burkhardt, H., Cooper, S., Franzke, J., Hultschig, H., Gather, K., Joos, P., Koch, W., Kotz, U., Kowalski, H., Ladage, A., Lohr, B., Luke, D., Mattig, Peter, Mess, K. H., Notz, D., Kirschfink, F. J., Pyrlik, J., Quarrie, D. R., Riethmuller, R., Schutte, W., Soding, P., Wolf, G., Yekutieli, G., Fohrmann, R., Krasemann, H. L., Leu, P., Lubelsmeyer, K., Lohrmann, E., Pandoulas, D., Poelz, G., Romer, O., Schmueser, Peter, Wiik, B. H., Al-Agil, I., Beuselinck, R., Binnie, D. M., Campbell, A. J., Martyn, H. U., Dornan, P. J., Garbutt, D. A., Jones, T. D., Jones, W. G., Lloyd, S. L., McCardle, J., Sedgbeer, J. K., Bell, Kenneth Watson, Bowler, M. G., Brock, I. C., Peise, G., Cashmore, R. J., Carnegie, R., Clarke, P. E. L., Devenish, R., Grossmann, P., Illingworth, J., Salmon, G. L., Thomas, J., Wyatt, T. R., Youngman, C., Rimkus, J., Foster, B., Hart, J. C., Harvey, J., Proudfoot, J., Saxon, D. H., Woodworth, P. L., Heyland, D., Holder, M., Duchovni, E., Eisenberg, Y., Sander, H. G., Karshon, U., Mikenberg, G., Revel, D., Ronat, E., Shapira, A., Barklow, T., Freeman, J., Lecomte, P., Meyer, T., and Rudolph, G.

Subjects
DIFFERENTIAL CROSS SECTION: X-DEPENDENCE, DIFFERENTIAL CROSS SECTION [MOMENTUM], Nuclear Theory, +ANTI-P+ANYTHING%22">ELECTRON POSITRON --> ANTI-P ANYTHING, INCLUSIVE REACTION: DIFFERENTIAL CROSS SECTION, +K%2B+ANYTHING%22">ELECTRON POSITRON --> K+ ANYTHING, DESY PETRA STOR, +PI-+ANYTHING%22">ELECTRON POSITRON --> PI- ANYTHING, ELECTROPRODUCTION [P], ELECTROPRODUCTION: PI, ELECTROPRODUCTION [PI-], ELECTROPRODUCTION: PI+, DIFFERENTIAL CROSS SECTION: MOMENTUM, TABLES, PRODUCTION [RATIO], ANGULAR CORRELATION, TASSO, PI-: ELECTROPRODUCTION, ELECTROPRODUCTION: ANTI-P, +P+ANYTHING%22">ELECTRON POSITRON --> P ANYTHING, PRODUCTION: YIELD, MOMENTUM: DIFFERENTIAL CROSS SECTION, Nuclear Experiment, PI+: ELECTROPRODUCTION, +PI%2B+ANYTHING%22">ELECTRON POSITRON --> PI+ ANYTHING, +K-+ANYTHING%22">ELECTRON POSITRON --> K- ANYTHING, COLLIDING BEAMS [ELECTRON POSITRON], DIFFERENTIAL CROSS SECTION [INCLUSIVE REACTION], ELECTRON POSITRON: INCLUSIVE REACTION, K- [ELECTROPRODUCTION], MOMENTUM [DIFFERENTIAL CROSS SECTION], ANNIHILATION: ELECTRON POSITRON, ANTI-P [ELECTROPRODUCTION], ELECTROPRODUCTION [K-], ELECTRON POSITRON: COLLIDING BEAMS, K-: ELECTROPRODUCTION, ELECTROPRODUCTION: K, ELECTRON POSITRON [ANNIHILATION], ELECTROPRODUCTION: P, ANNIHILATION [ELECTRON POSITRON], 14: 22: 34 GEV-CMS, K+: ELECTROPRODUCTION, ELECTROPRODUCTION: K+, YIELD: PRODUCTION, X-DEPENDENCE [DIFFERENTIAL CROSS SECTION], PI+ [ELECTROPRODUCTION], INCLUSIVE REACTION [DIFFERENTIAL CROSS SECTION], PI- [ELECTROPRODUCTION], ANTI-P: ELECTROPRODUCTION, ELECTROPRODUCTION [PI+], X-DEPENDENCE: DIFFERENTIAL CROSS SECTION, P: ELECTROPRODUCTION, RATIO [PRODUCTION], ENERGY DEPENDENCE [MULTIPLICITY], DIFFERENTIAL CROSS SECTION: INCLUSIVE REACTION, ddc:530, COLLIDING BEAMS: ELECTRON POSITRON, EXPERIMENTAL RESULTS, K+ [ELECTROPRODUCTION], YIELD [PRODUCTION], 22: 34 GEV-CMS [14], MULTIPLICITY: ENERGY DEPENDENCE, DIFFERENTIAL CROSS SECTION [X-DEPENDENCE], RATIO: PRODUCTION, ELECTRON POSITRON [COLLIDING BEAMS], INCLUSIVE REACTION [ELECTRON POSITRON], ELECTROPRODUCTION [K+], ELECTROPRODUCTION [ANTI-P], PRODUCTION [YIELD], High Energy Physics::Experiment, P [ELECTROPRODUCTION], PRODUCTION: RATIO, ELECTRON POSITRON: ANNIHILATION
Abstract

(1983). doi:10.1007/BF01577813, The inclusive production of π± andK± mesons and of protons and antiprotons ine+e− annihilation has been measured at c.m. energies ofW=14, 22 and 34GeV. Using time of flight measurements and Cerenkov counters the full momentum range has been covered. Differential cross sections and total particle yields are given. At particle momenta of 0.4 GeV/c more than 90% of the charged hadrons are pions. With increasing momentum the fraction of pions among the charged hadrons decreases. AtW=34 GeV and a momentum of 5 GeV/c the particle fractions are approximately π±:K±:p,\(\bar p = 0.55:0.3:0.15\). On average an event atW=34 GeV contains 10.3±0.4π±, 2.0±0.2K± and 0.8±0.1p,\(\bar p\). In addition, we present results on baryon correlations using a sample of events where two or more protons and/or antiprotons are observed in the final state.

Published
1982
Full Text
View/download PDF

11. 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
Full Text
View/download PDF

Catalog

Books, media, physical & digital resources
See catalog results