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1. Measurement and analysis of the reaction $\gamma\gamma\to\pi^+3\pi^-$

Author

Pust, R., Olsson, J., Clarke, D., Dieckmann, A., Duerdoth, I. P., Eckerlin, Guenter, Elsen, E., Felst, R., Finch, A. J., Foster, F., Greenshaw, T., Hagemann, J., Allison, John, Haidt, D., Heintze, J., Heinzelmann, G., Hellenbrand, K. H., Hill, P., Hughes, G., Kado, H., Kawagoe, K., Kleinwort, C., Knies, G., Ambrus, K., Komamiya, S., Krehbiel, H., von Krogh, J., Kuhlen, M., Loebinger, F. K., Macbeth, A. A., Magnussen, N., Marshall, R., Meinke, R., Middleton, R. P., Barlow, Roger J., Murphy, P. G., Naroska, B., Nye, J. M., Ould-Saada, F., Pitzl, D., Ramcke, R., Rieseberg, H., Sato, A., Schmidt, D., Smolik, L., Bartel, W., Schneekloth, U., Skard, J. A. J., Spitzer, J., Steffen, P., Stephens, K., Takeshita, T., Wagner, A., Walker, I. W., Weber, G., Zimmer, M., Bethke, S., Zorn, G. T., JADE Collaboration, Bowdery, C. K., Cartwright, S. L., and Chrin, J.

Subjects
two-photon [exchange], (pi+ pi-) [mass spectrum], pi [electroproduction], multiple production [pi], inelastic scattering: electron positron, rho(770)0 [electroproduction], electron positron [inelastic scattering], multiple production: pi, channel cross section: energy dependence, electron positron [colliding beams], electroproduction [pi], 36.4 GeV-cms, electroproduction [rho(770)0], electroproduction: rho(770)0, electron positron: colliding beams, boson: statistics, energy dependence [channel cross section], DESY PETRA Stor, colliding beams [electron positron], two-photon: exchange, two-pion [correlation function], electroproduction: pi, (pi+ pi-): mass spectrum, mass spectrum [(pi+ pi-)], statistics [boson], electron positron: inelastic scattering, correlation function: two-pion, exclusive reaction [photon photon], pi: electroproduction, +3pi%2B+3pi-+positron+electron%22">electron positron --> 3pi+ 3pi- positron electron, rho(770)0: multiplicity, ddc:530, +2rho%28770%290+pi%2B+pi-+positron+electron%22">electron positron --> 2rho(770)0 pi+ pi- positron electron, rho(770)0: electroproduction, exchange: two-photon, photon photon: exclusive reaction, pi: multiple production, inelastic scattering [electron positron], pi [multiple production], mass spectrum: (pi+ pi-), bibliography, +rho%28770%290+2pi%2B+2pi-+positron+electron%22">electron positron --> rho(770)0 2pi+ 2pi- positron electron, colliding beams: electron positron, JADE, multiplicity [rho(770)0], exchange [two-photon], experimental results
Abstract

22 pp. (1991)., The reactionγγ→3π+3π- has been studied usig the JADE detector at PETRA. The topological cross sectionσ(γγ→3π+3π-) was measured in the CM energy range 1.5–5.5 GeV. The production ofρ0,s was observed and the average number ofρ0,s per event measured. The contributions of the subprocessesγγ→ρ02π+2π-,γγ→ρ0ρ0π+2π- andγγ→ 3π+3π- (phase space) were studied and 95% C.L. upper limits for the cross sectionσ(γγ→ρ0ρ0π+π- determined. Finally the Bose-Einstein correlation for pairs of like signed pions was observed. A fit to a standard parametrization gave results consistent with other studies of this effect in pion systems.

Published
1991
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2. Inclusive Muon Production at c.m. Energies 12 to 31.6 GeV

Author

Berger, Ch., Genzel, H., Alexander, G., Barreiro, F., Bürger, J., Criegee, L., Dehne, H. C., Devenish, R., Eskreys, A., Flügge, G., Franke, G., Gabriel, W., Grigull, R., Gerke, Ch., Knies, G., Lehmann, E., Mertiens, H. D., Michelsen, U., Pape, K. H., Reich, H. D., Scarr, M., Stella, B., Swamy, T. N. Ranga, Lackas, W., Timm, U., Wagner, W., Waloschek, P., Winter, G. G., Zimmermann, W., Achterberg, O., Blobel, V., Boesten, L., Hepp, V., Kapitza, H., Raupach, F., Koppitz, B., Lewendel, B., Lührsen, W., van Staa, R., Spitzer, H., Chang, C. Y., Glasser, R. G., Kellogg, R. G., Lau, K. H., Polvado, R. O., Klovning, A., Sechi-Zorn, B., Skuja, A., Welch, G., Zorn, G. T., Bäcker, A., Brandt, S., Derikum, K., Diekmann, A., Grupen, C., Meyer, H. J., Lillestöl, E., Neumann, B., Rost, M., Zech, G., Azemoon, T., Daum, H. J., Meyer, H., Meyer, O., Rössler, M., Schmidt, D., Wacker, K., Lillethum, E., PLUTO Collaboration, Skard, J. A., and Ackermann, H.

Subjects
Semileptonic decay, Physics, Particle physics, Muon, Annihilation, Meson, High Energy Physics::Phenomenology, Hadron, Quark model, General Physics and Astronomy, Nuclear physics, Particle decay, ddc:550, High Energy Physics::Experiment, Nuclear Experiment, Lepton
Abstract

In this Letter, a measurement of inclusive muon production (p/sub u/>2 GeV/c) in e/sup +/e/sup -/ annihilation into hadrons at center-of-mass energies from ..sqrt..s-bar=12 to 31.6 GeV is reported. The results agree with the expected semileptonic decays from charmed and bottom mesons.

Published
1980

3. EVIDENCE FOR IOTA PRODUCTION IN HIGH-ENERGY $e^+ e^-$ ANNIHILATION

Author

Bartel, W., Becker, L., Cords, D., Felst, R., Haidt, D., Knies, G., Krehbiel, H., Laurikainen, P., Magnussen, N., Meinke, R., Naroska, B., Olsson, J., Schmidt, D., Steffen, P., Dietrich, G., Hagemann, J., Heinzelmann, G., Kado, H., Kawagoe, K., Kleinwort, C., Kuhlen, M., Petersen, A., Ramcke, R., Schneekloth, U., Weber, G., Ambrus, K., Bethke, S., Dieckmann, A., Elsen, E., Heintze, J., Hellenbrand, K. H., Komamiya, S., Von Krogh, J., Lennert, P., Matsumura, H., Rieseberg, H., Spitzer, J., Wagner, A., Bowdery, C. K., Finch, A. J., Foster, F., Hughes, G., Nye, J., Allison, John, Ball, A. H., Barlow, Roger J., Chrin, J., Duerdoth, I. P., Greenshaw, T., Hill, P., Loebinger, F. K., Macbeth, A. A., Mills, H. E., Murphy, P. G., Stephens, K., Warming, P., Glasser, R. G., Skard, J. A. J., Wagner, S. R., Zorn, G. T., Cartwright, S. L., Clarke, D., Marshall, R., Middleton, R. P., Kawamoto, T., Kobayashi, T., Takeda, H., Takeshita, T., Yamada, S., and JADE Collaboration

Subjects
MASS SPECTRUM [(K0(S) K- PI+)], (K0(S) K+ PI-): MASS SPECTRUM, DESY PETRA STOR, (K0(S) K- PI+) [MASS SPECTRUM], MASS SPECTRUM: (K0(S) K- PI+), (K0(S) K+ PI-) [MASS SPECTRUM], IOTA(1440) [ELECTROPRODUCTION], COLLIDING BEAMS: ELECTRON POSITRON, (K0(S) K- PI+): MASS SPECTRUM, ELECTROPRODUCTION: IOTA(1440), CHANNEL CROSS SECTION: BRANCHING RATIO, MASS SPECTRUM: (K0(S) K+ PI-), ELECTRON POSITRON: INCLUSIVE REACTION, COLLIDING BEAMS [ELECTRON POSITRON], ANNIHILATION: ELECTRON POSITRON, ELECTRON POSITRON [COLLIDING BEAMS], INCLUSIVE REACTION [ELECTRON POSITRON], +IOTA%281440%29+ANYTHING%22">ELECTRON POSITRON --> IOTA(1440) ANYTHING, ELECTRON POSITRON: COLLIDING BEAMS, ELECTRON POSITRON [ANNIHILATION], MASS SPECTRUM [(K0(S) K+ PI-)], ANNIHILATION [ELECTRON POSITRON], JADE, BRANCHING RATIO [CHANNEL CROSS SECTION], 36 GEV-CMS, ELECTRON POSITRON: ANNIHILATION, IOTA(1440): ELECTROPRODUCTION, ELECTROPRODUCTION [IOTA(1440)]
Abstract

6 pp. (1985).

Published
1985

4. Studies of proton-proton collisions at the CERN ISR with an identified charged hadron of high transverse momentum at 90$^0$ ; 3, jet-like structures

Author

Albrow, Michael G, Almehed, S, Booth, P S L, de Bouard, X, Bøggild, H, Carroll, L J, Catz, P, Dahl-Jensen, Erik, Dahl-Jensen, I, Damgaard, G, von Dardel, Guy F, Elverhaug, N, Hansen, K H, Jackson, J N, Jancso, G, Jarlskog, G, Jensen, H B, Jönsson, L B, Klovning, A, Lillethun, E, Lu, A, Lörstad, B, McCubbin, N A, Melin, A, Miettinen, H, Møller, R, Nielsen, B S, Nielsen, S Ø, Petersen, J O, Skard, J A J, and Villeneuve, P

Subjects
Astrophysics::High Energy Astrophysical Phenomena, High Energy Physics::Experiment, Nuclear Experiment, Particle Physics - Experiment
Abstract

For pt.II see ibid., vol.145, p.305 (1978). Results are reported from a study of proton-proton collisions at a c.m. energy of 52.6 GeV, in which a charged hadron with large transverse momentum is emitted near 90 degrees in the c.m.s. Pairs of particles opposite in azimuth to the trigger particle with transverse momenta above a fixed value show evidence for jet-like structures. Methods to isolate jet-like groups of particles are compared on the basis of a simple model of jet events. Results on the distribution and internal properties of jets from proton-proton collisions are presented, using one of these methods. The jets are found to be very similar in structure to jets observed in e/sup +/e/sup -/ annihilations and in nu p scattering, but have about 20% higher multiplicity mainly originating at small x/sub ///. The charge of the jets is correlated with the charge of the trigger particle. (23 refs).

Published
1979

5. 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

6. Hadron production from photon-photon interactions in the CM energy range from 1 to 5 $GeV$

Author

Berger, Ch., Genzel, H., Alexander, G., Barreiro, F., Bürger, J., Criegee, L., Dehne, H. C., Devenish, R., Eskreys, A., Flügge, G., Franke, G., Gabriel, W., Grigull, R., Gerke, Ch., Knies, G., Lehmann, E., Mertiens, H. D., Michelsen, U., Pape, K. H., Reich, H. D., Stella, B., Ranga Swamy, T. N., Timm, U., Lackas, W., Wagner, W., Waloschek, P., Winter, G. G., Zimmermann, W., Achterberg, O., Blobel, V., Boesten, L., Kapitza, H., Koppitz, B., Lührsen, W., Raupach, F., Maschuw, R., van Staa, R., Spitzer, H., Chang, C. Y., Glasser, R. G., Kellogg, R. G., Lau, K. H., Sechi-Zorn, B., Skuja, A., Welch, G., Klovning, A., Zorn, G. T., Bäcker, A., Brandt, S., Derikum, K., Diekmann, A., Grupen, C., Meyer, H. J., Neumann, B., Rost, M., Zech, G., Lillestöl, E., Azemoon, T., Daum, H. J., Meyer, H., Meyer, O., Rössler, M., Schmidt, D., Wacker, K., PLUTO Collaboration, Lillethun, E., Skard, J. A., and Ackermann, H.

Subjects
Physics, Nuclear and High Energy Physics, Particle physics, Annihilation, Photon, Scattering, Hadron, Detector, Nuclear physics, Pluto, Formalism (philosophy of mathematics), High Energy Physics::Experiment, ddc:530, Storage ring
Abstract

We present the first data on photon-photon annihilation into hadrons for CM energies > 1 GeV obtained with the detector PLUTO at the e+e− storage ring PETRA. Cross sections are extracted using an inelastic eγ scattering formalism. The results are compared to expectations from Regge-like models.

Published
1979

7. Test of {QED} in the Reactions $e^+ e^- \to e^+ e^-$ and $e^+ e^- \to \mu^+ \mu^-$ at {CMS} Energies From 9.4-{GeV} to 31.6-{GeV}

Author

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

Subjects
PAIR PRODUCTION [MUON], MUON [ELECTROPRODUCTION], RADIATIVE CORRECTION, ELECTROPRODUCTION: MUON, SYMMETRY: CROSSING, ELECTRON MUON: UNIVERSALITY, ENERGY DEPENDENCE: DIFFERENTIAL CROSS SECTION, +MUON%2B+MUON%22">ELECTRON POSITRON --> MUON+ MUON, CROSSING [SYMMETRY], DIFFERENTIAL CROSS SECTION [ANGULAR DEPENDENCE], DESY PETRA STOR, DIFFERENTIAL CROSS SECTION: ENERGY DEPENDENCE, ELECTRON POSITRON: ELASTIC SCATTERING, MUON: PAIR PRODUCTION, ANGULAR DEPENDENCE [DIFFERENTIAL CROSS SECTION], PLUTO, QUANTUM ELECTRODYNAMICS: VALIDITY TEST, ELECTROPRODUCTION [MUON], MUON: ELECTROPRODUCTION, DIFFERENTIAL CROSS SECTION [ENERGY DEPENDENCE], COLLIDING BEAMS: ELECTRON POSITRON, EXPERIMENTAL RESULTS, DESY DORIS STOR, COLLIDING BEAMS [ELECTRON POSITRON], VALIDITY TEST [QUANTUM ELECTRODYNAMICS], PAIR PRODUCTION: MUON, UNIVERSALITY [ELECTRON MUON], ANNIHILATION: ELECTRON POSITRON, 9.4-31.6 GEV-CM, ELECTRON POSITRON [COLLIDING BEAMS], ANGULAR DEPENDENCE: DIFFERENTIAL CROSS SECTION, ELECTRON POSITRON: COLLIDING BEAMS, ELECTRON POSITRON [ELASTIC SCATTERING], ELECTRON POSITRON [ANNIHILATION], ENERGY DEPENDENCE [DIFFERENTIAL CROSS SECTION], ELASTIC SCATTERING: ELECTRON POSITRON, DIFFERENTIAL CROSS SECTION: ANGULAR DEPENDENCE, ELASTIC SCATTERING [ELECTRON POSITRON], ANNIHILATION [ELECTRON POSITRON], MUON [PAIR PRODUCTION], ELECTRON POSITRON: ANNIHILATION
Abstract

22 pp. (1980).

Published
1980

8. 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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9. 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
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10. Two-particle correlations in $e^+$$e^−$ annihilation

Author

Berger, Ch., Genzel, H., Alexander, G., Barreiro, F., Bürger, J., Criegee, L., Dehne, H. C., Devenish, R., Eskreys, A., Flügge, G., Franke, G., Gabriel, W., Grigull, R., Gerke, Ch., Knies, G., Lehmann, E., Mertiens, H. D., Michelsen, U., Pape, K. H., Reich, H. D., Stella, B., Ranga Swamy, T. N., Timm, U., Lackas, W., Wagner, W., Waloschek, P., Winter, G. G., Zimmermann, W., Achterberg, O., Blobel, V., Boesten, L., Hepp, V., Kapitza, H., Koppitz, B., Raupach, F., Lewendel, B., Lührsen, W., Maschuw, R., Van Staa, R., Spitzer, H., Chang, C. Y., Glasser, R. G., Kellogg, R. G., Lau, K. H., Polvado, R. O., Klovning, A., Sechi-Zorn, B., Skuja, A., Welch, G., Zorn, G. T., Bäcker, A., Brandt, S., Derikum, K., Diekmann, A., Grupen, C., Meyer, H. J., Lillestöl, E., Neumann, B., Rost, M., Zech, G., Azemoon, T., Daum, H. J., Meyer, H., Meyer, O., Rössler, M., Schmidt, D., Wacker, K., Lillethun, E., PLUTO Collaboration, Skard, J. A., and Ackermann, H.

Subjects
Physics, Nuclear and High Energy Physics, Particle physics, Annihilation, High Energy Physics::Phenomenology, Hadron, Perturbative QCD, Nuclear physics, Particle, High Energy Physics::Experiment, ddc:530, High order, Nuclear Experiment, Energy (signal processing)
Abstract

We present measurements of two-particle angular correlations in hadron jets produced in e + e − annihilation between 7.7 and 31.6 GeV c.m. energy. The data are compared to predictions of high order perturbative QCD calculations.

Published
1980

12. Studies of proton-proton collisions at the CERN ISR with an identified charged hadron of high transverse momentum at 90$^0$ ; 2, on the distribution of charged particles in the central region

Author

Albrow, M G, Almehed, S, Bøggild, H, Booth, P S L, Carroll, L J, Catz, P, Dahl-Jensen, Erik, Dahl-Jensen, I, Damgaard, G, de Bouard, X, Elverhaug, N, Hansen, K H, Jackson, J N, Jancso, G, Jarlskog, G, Jensen, H B, Jönsson, L B, Klovning, A, Lillethun, E, Lörstad, B, Lu, A, McCubbin, N A, Miettinen, H, Møller, R, Morris, J V, Nielsen, S O, Petersen, J O, Skard, J A J, Villeneuve, P, and von Dardel, Guy F

Subjects
Nuclear Experiment, Particle Physics - Experiment
Abstract

For pt.I see ibid., vol.B135, p.461 (1978). Results are reported from an investigation of proton-proton collisions at a c.m. energy of 52.6 GeV, in which a charged hadron with large transverse momentum is produced near 90 degrees in the c.m.s. The momentum and charge correlations between identified high- rho /sub T/ trigger particles and other charged particles in the central region (rapidity mod y mod

Published
1978

14. Inelastic electron photon scattering at moderate four-momentum transfers

Author

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

Subjects
ddc:530
Published
1980
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15. Inclusive π0 production in pp collisions at the CERN ISR

Author

Albrow, M. G., Almehed, S., Booth, P. S.L., De Bouard, X., Bøggild, H., Catz, P., Dahl-Jensen, E., Dahl-Jensen, I., Damgaard, G., von Dardel, G., Elverhaug, N., Jackson, J. N., Jancso, G., Jarlskog, G., Klovning, A., Lillethun, E., Lu, A., Lörstad, B., McCubbin, N. A., Miettinen, H. E., Nielsen, B. S., Peterson, J. O., Skard, J. A.J., Villeneuve, P., Albrow, M. G., Almehed, S., Booth, P. S.L., De Bouard, X., Bøggild, H., Catz, P., Dahl-Jensen, E., Dahl-Jensen, I., Damgaard, G., von Dardel, G., Elverhaug, N., Jackson, J. N., Jancso, G., Jarlskog, G., Klovning, A., Lillethun, E., Lu, A., Lörstad, B., McCubbin, N. A., Miettinen, H. E., Nielsen, B. S., Peterson, J. O., Skard, J. A.J., and Villeneuve, P.

Abstract

The inclusive production of ρ{variant}0 mesons in pp collisions has been measured at five c.m. energies from √s = 23.6 to 63.0 GeV. The cross sections and the production spectra as a function of transverse momentum and rapidity are discussed.

Published
1979

16. Studies of proton-proton collisions at the CERN ISR with an identified charged hadron of high transverse momentum at 90°. (III). Jet-like structures

Author

Albrow, M. G., Almehed, S., Booth, P. S.L., De Bouard, X., Bøggild, H., Catz, P., Dahl-Jensen, E., Dahl-Jensen, I., Damgaard, G., Von Dardel, G., Elverhaug, N., Jackson, J. N., Jancso, G., Jarlskog, G., Klovning, A., Lillethun, E., Lu, A., Lörstad, B., McCubbin, N. A., Miettinen, H. E., Nielsen, B. S., Skard, J. A.J., Villeneuve, P., Albrow, M. G., Almehed, S., Booth, P. S.L., De Bouard, X., Bøggild, H., Catz, P., Dahl-Jensen, E., Dahl-Jensen, I., Damgaard, G., Von Dardel, G., Elverhaug, N., Jackson, J. N., Jancso, G., Jarlskog, G., Klovning, A., Lillethun, E., Lu, A., Lörstad, B., McCubbin, N. A., Miettinen, H. E., Nielsen, B. S., Skard, J. A.J., and Villeneuve, P.

Abstract

Results are reported from a study of photon-proton collisions at a c.m. energy of 52.6 GeV, in which a charged hadron with large transverse momentum is emitted near 90° in the c.m.s. Paris of particles opposite in azimuth to the trigger particle with transverse momenta above a fixed value show evidence for jet-like structures. Methods to isolate jet-like groups of particles are compared on the basis of a simple model of jet events. Results on the distribution and internal properties of jets from proton-proton collisions are presented, using one of these methods. The jets are found to be very similar in structure to jets observed in e+e- annihilations and in %nu;p scattering, but have about 20% higher multiplicity mainly originating at small x{norm of matrix}. The charge of the jets is correlated with the charge of the trigger particle.

Published
1979

17. Evidence for dominant vector-meson production in inelastic proton-proton collisions at 53 GeV c.m. energy

Author

Jancso, G., Albrow, M. G., Almehed, S., Booth, P. S.L., De Bouard, X., Burger, J., Bøggild, H., Catz, P., Dahl-Jensen, E., Dahl-Jensen, I., Damgaard, G., Von Dardel, G., Elverhaug, N., Guillerminet, B., Herbsleb, P., Jackson, J. N., Jarlskog, G., Klovning, A., Lillethun, E., Little, R., Lohse, E., Lu, A., Lörstad, B., Mccubbin, N. A., Miettinen, H. E., Morris, J. V., Nielsen, B. S., Sanford, T., Skard, J. A.J., Villeneuve, P., Jancso, G., Albrow, M. G., Almehed, S., Booth, P. S.L., De Bouard, X., Burger, J., Bøggild, H., Catz, P., Dahl-Jensen, E., Dahl-Jensen, I., Damgaard, G., Von Dardel, G., Elverhaug, N., Guillerminet, B., Herbsleb, P., Jackson, J. N., Jarlskog, G., Klovning, A., Lillethun, E., Little, R., Lohse, E., Lu, A., Lörstad, B., Mccubbin, N. A., Miettinen, H. E., Morris, J. V., Nielsen, B. S., Sanford, T., Skard, J. A.J., and Villeneuve, P.

Abstract

The Split Field Magnet facility at the CERN ISR has been used to measure inclusive resonance production in inelastic p-p collisions at a c.m. energy of 53 GeV. The mass spectrum of pairs of oppositely charged hadrons shows a strong correlation, which can be explained as a consequence of dominant vector meson production, accounting for more than 60% of all pions and kaons produced.

Published
1977

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