Search

Your search keyword '"Posnecker, K"' showing total 3 results
Start Over Author "Posnecker, K" Topic annihilation: electron positron
3 results on '"Posnecker, K"'

1. Determination of $\alpha_s$ in First and Second Order {QCD} From $e^+ e^-$ Annihilation Into Hadrons

Author

Althoff, M., Braunschweig, W., Eisenmann, J., Takashima, M., Venkataramania, H., Wicklund, E., Wu, Sau Lan, Zobernig, G., TASSO Collaboration, Fischer, H. M., Hartmann, H., Jocksch, A., Knop, G., Kopke, L., Kolanoski, H., Kuck, H., Mertens, V., Wedemeyer, R., Kirschfink, F. J., Eskreys, A., Gather, K., Hultschig, H., Joos, P., Kotz, U., Kowalski, H., Ladage, A., Lohr, B., Luke, D., Mattig, Peter, Lubelsmeyer, K., Notz, D., Nowak, R. J., Pyrlik, J., Rushton, M., Schutte, W., Trines, D., Tymieniecka, T., Wolf, G., Yekutieli, G., Xiao, C., Martyn, H. U., Fohrmann, R., Hilger, E., Kracht, T., Krasemann, H. L., Leu, P., Lohrmann, E., Pandoulas, D., Poelz, G., Posnecker, K. U., Wiik, B. H., Rosskamp, P., Beuselinck, R., Binnie, D. M., Dornan, P. J., Foster, B., Garbutt, D. A., Jenkins, Colin, Jones, T. D., Jones, W. G., McCardle, J., Sedgbeer, J. K., Sander, H. G., Thomas, J., Wan Abdullah, W. A. T., Bell, Kenneth Watson, Bowler, M. G., Bull, P., Cashmore, R. J., Clarke, P. E. L., Devenish, R., Grossmann, P., Hawkes, C. M., Schmitz, D., Lloyd, S. L., Youngman, C., Forden, G. E., Hart, J. C., Harvey, J., Hasell, D. K., Saxon, D. H., Barreiro, F., Brandt, S., Dittmar, M., Siebke, H., Holder, M., Kreutz, G., Neumann, B., Duchovni, E., Eisenberg, Y., Karshon, U., Mikenberg, G., Mir, R., Revel, D., Ronat, E., Wallraff, W., Shapira, A., Winik, M., Baranko, G., Barklow, T., Caldwell, A., Cherney, Michael G., Izen, J. M., Mermikides, M., Rudolph, G., and Strom, David M.

Subjects
JET [MASS], DESY PETRA STOR, BIBLIOGRAPHY, THRUST [EVENT SHAPE ANALYSIS], HADRON: ELECTROPRODUCTION, MULTIPLE PRODUCTION: HADRON, ELECTROPRODUCTION [HADRON], JET [GLUON], TASSO, ELECTROPRODUCTION: HADRON, EVENT SHAPE ANALYSIS: THRUST, CORRELATION [ENERGY], HADRON [ELECTROPRODUCTION], MASS [JET], JET [ELECTROPRODUCTION], MULTIDIMENSIONAL ANALYSIS: CLUSTER, ELECTROPRODUCTION: JET, COLLIDING BEAMS [ELECTRON POSITRON], HADRON [MULTIPLE PRODUCTION], PARAMETRIZATION [DIFFERENTIAL CROSS SECTION], ANNIHILATION: ELECTRON POSITRON, ELECTRON POSITRON: COLLIDING BEAMS, ENERGY: CORRELATION, ELECTRON POSITRON [ANNIHILATION], JET: MASS, 33.0-36.6 GEV-CMS, ANNIHILATION [ELECTRON POSITRON], PERTURBATION THEORY [QUANTUM CHROMODYNAMICS], ELECTROPRODUCTION [JET], ASYMMETRY, SPECTRUM: TRANSVERSE MOMENTUM, TRANSVERSE MOMENTUM: SPECTRUM, FRAGMENTATION [MODEL], MULTIPLE PRODUCTION [HADRON], MASS: JET, COUPLING CONSTANT [STRONG INTERACTION], DIFFERENTIAL CROSS SECTION: PARAMETRIZATION, DIFFERENTIAL CROSS SECTION [PARAMETRIZATION], COUPLING CONSTANT: STRONG INTERACTION, CLUSTER [MULTIDIMENSIONAL ANALYSIS], GLUON: JET, STRONG INTERACTION [COUPLING CONSTANT], COLLIDING BEAMS: ELECTRON POSITRON, EXPERIMENTAL RESULTS, SPECTRUM [TRANSVERSE MOMENTUM], JET: ELECTROPRODUCTION, QUANTUM CHROMODYNAMICS: PERTURBATION THEORY, HADRON: MULTIPLE PRODUCTION, ELECTRON POSITRON [COLLIDING BEAMS], MODEL: FRAGMENTATION, TRANSVERSE MOMENTUM [SPECTRUM], STRONG INTERACTION: COUPLING CONSTANT, PARAMETRIZATION: DIFFERENTIAL CROSS SECTION, ELECTRON POSITRON: ANNIHILATION
Abstract

60 pp. (1984).

Published
1984
Full Text
View/download PDF

2. Inclusive $\pi^0$ Production by $e^+ e^-$ Annihilation at 34.6 GeV Center-of-mass Energy

Author

Braunschweig, W., Gerhards, R., Kirschfink, F. J., Martyn, H. U., Rosskamp, P., Vogel, E., Wallraff, W., Bock, B., Eisenmann, J., Fischer, H. M., Hartmann, H., Hilger, E., Jocksch, A., Kolanoski, H., Kuck, H., Mertens, V., Wedemeyer, R., Foster, B., Martin, A. J., Bernardi, E., Eisenberg, Y., Eskreys, A., Gather, K., Hultschig, H., Joos, P., Klima, B., Kowalski, H., Ladage, A., Lohr, B., Luke, D., Mattig, Peter, Montag, A., Notz, D., Shapira, A., Trines, D., Tymieniecka, T., Tysarczyk, G., Walczak, R., Wolf, G., Yekutieli, G., Zeuner, W., Kracht, T., Krasemann, H. L., Kruger, J., Lohrmann, E., Poelz, G., Posnecker, K. U., Binnie, D. M., Dornan, P., Garbutt, D. A., Jenkins, Colin, Jones, W. G., Sedgbeer, J. K., Shulman, J., Su, D., Watson, A. P., Barreiro, F., Ros, E., Balkwill, C., Bowler, M. G., Burrows, P. N., Cashmore, R. J., Dauncey, Paul D., Devenish, R., Heath, G., Mellor, D. J., Ratoff, P., Tomalin, I., Yelton, J. M., Lloyd, S. L., Forden, G. E., Hart, J. C., Hasell, D. K., Saxon, D. H., Brandt, S., Holder, M., Labarga, L., Neumann, B., Karshon, U., Mikenberg, G., Mir, R., Revel, D., Ronat, E., Wainer, N., Baranko, G., Caldwell, A., Cherney, Michael G., Izen, J. M., Ritz, S., Strom, David M., Takashima, M., Wicklund, E., Wu, Sau Lan, Zobernig, G., and TASSO Collaboration

Subjects
PI0: ELECTROPRODUCTION, DIFFERENTIAL CROSS SECTION, ELECTRON POSITRON: INCLUSIVE REACTION, DESY PETRA STOR, ELECTROPRODUCTION: PI0, +PI0+ANYTHING%22">ELECTRON POSITRON --> PI0 ANYTHING, ANNIHILATION: ELECTRON POSITRON, PI0: MULTIPLICITY, ELECTRON POSITRON: COLLIDING BEAMS, TASSO, 34.6 GEV-CMS, ANGULAR DISTRIBUTION, COLLIDING BEAMS: ELECTRON POSITRON, EXPERIMENTAL RESULTS, ELECTRON POSITRON: ANNIHILATION
Abstract

The cross section for the processe+e−→π0+ anything has been measured at an average center of mass energy of 34.6 GeV for π0 energies between 0.7 and 17 GeV. The angular distribution for π0 energies larger than 2 GeV is of the formdσ/dΩ∼1+Acos2θ, withA=1.2±0.5. The ratio of π0 to π± production in the measured energy range is 2σ(π0)/(σ(π+)+σ(π−))=1.13±0.18

Published
1986
Full Text
View/download PDF

3. A Detailed Study of Strange Particle Production in $e^+ e^-$ Annihilation at High-energy

Author

Althoff, M., Braunschweig, W., Kirschfink, F. J., Lubelsmeyer, K., Martyn, H. U., Rosskamp, P., Schmitz, D., Siebke, H., Wallraff, W., Eisenmann, J., Fischer, H. M., Hartmann, H., Jocksch, A., Knop, G., Kolanoski, H., Kuck, H., Mertens, V., Wedemeyer, R., Foster, B., Eskreys, A., Gather, K., Hildebrandt, M., Hultschig, H., Joos, P., Kotz, U., Kowalski, H., Ladage, A., Lohr, B., Luke, D., Mattig, Peter, Notz, D., Nowak, R. J., Pyrlik, J., Ronat, E., Rushton, M., Schutte, W., Trines, D., Tymieniecka, T., Wolf, G., Yekutieli, G., Xiao, C., Fohrmann, R., Hilger, E., Kracht, T., Krasemann, H. L., Leu, P., Lohrmann, E., Pandoulas, D., Poelz, G., Posnecker, K. U., Wiik, B. H., Beuselinck, R., Binnie, D. M., Campbell, A. J., Dornan, P. J., Garbutt, D. A., Jenkins, Colin, Jones, T. D., Jones, W. G., McCardle, J., Sedgbeer, J. K., Thomas, J., Wan Abdullah, W. A. T., Bell, Kenneth Watson, Bowler, M. G., Bull, P., Cashmore, R. J., Clarke, P. E. L., Dauncey, Paul D., Devenish, R., Grossmann, P., Hawkes, C. M., Lloyd, S. L., Mellor, D., Youngman, C., Forden, G. E., Hart, J. C., Harvey, J., Hasell, D. K., Saxon, D. H., Woodworth, P. L., Barreiro, F., Brandt, S., Dittmar, M., Holder, M., Kreutz, G., Neumann, B., Duchovni, E., Eisenberg, Y., Karshon, U., Mikenberg, G., Mir, R., Revel, D., Shapira, A., Winik, M., Baranko, G., Caldwell, A., Cherney, Michael G., Izen, J. M., Mermikides, M., Ritz, S., Rudolph, G., Strom, David M., Takashima, M., Venkataramania, H., Wicklund, E., Wu, Sau Lan, and Zobernig, G.

Subjects
ELECTROPRODUCTION: LAMBDA, JET: ELECTROPRODUCTION, SCALING: VIOLATION, DIFFERENTIAL CROSS SECTION, POLARIZATION: LAMBDA, ELECTROPRODUCTION: JET, YIELD: (STRANGE PARTICLE), DESY PETRA STOR, ANNIHILATION: ELECTRON POSITRON, TRANSVERSE MOMENTUM, ELECTRON POSITRON: COLLIDING BEAMS, ELECTROPRODUCTION: K0, TASSO, 14: 22: 34 GEV-CMS, K0: ELECTROPRODUCTION, LAMBDA: ELECTROPRODUCTION, RAPIDITY: SPECTRUM, LAMBDA: POLARIZATION, COLLIDING BEAMS: ELECTRON POSITRON, EXPERIMENTAL RESULTS, ELECTRON POSITRON: ANNIHILATION, SPECTRUM: RAPIDITY
Abstract

The European physical journal / C 27(1), 27 - 37 (1985). doi:10.1007/BF01642477, Results onK0 and Λ production ine+e− annihilation at c.m. energies of 14, 22 and 34 GeV are presented. The shape of theK0 and Λ differential cross sections are very similar to each other and to those of π±,K± and\(p(\bar p)\). Scaling violations are observed forK0 production. We obtain a value for the probability to produce strange quark-antiquark pairs relative to that to produce up or down quark-antiquark pairs of 0.35±0.02±0.05. The value ofRh=σ(e+e-→hX)/σµµ is shown to rise steadily with c.m. energy for all particle species. At 34 GeV we find 1.48±0.05K0 and 0.31±0.03 Λ per event. We have searched for possible Λ polarization. The production ofK0's and Λ's in jets is examined as a function ofpT2 and rapidity and compared to that of all charged particles; the yields in two and three jets are also investigated. Results are presented from events with two baryons\((\Lambda ,\bar \Lambda ,por\bar p)\) observed., Published by Springer, Heidelberg

Published
1985
Full Text
View/download PDF

Catalog

Books, media, physical & digital resources
See catalog results