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15 results on '"J/PSI(3100) [ELECTROPRODUCTION]"'

1. Color octet contributions to $J/\psi$ photoproduction

Author

Cacciari, Matteo and Kramer, Michael

Subjects
energy spectrum [J/psi(3100)], octet [color], Feynman graph, Nuclear Theory, High Energy Physics::Phenomenology, J/psi(3100) [photoproduction], nonrelativistic [quantum chromodynamics], energy dependence [channel cross section], electroproduction [J/psi(3100)], DESY HERA Stor, photoproduction [J/psi(3100)], interpretation of experiments [numerical calculations], inclusive reaction [photon p], ddc:550, High Energy Physics::Experiment, inclusive reaction [electron p], J/psi(3100) [electroproduction], J/psi(3100) [energy spectrum]
Abstract

We have calculated the leading color-octet contributions to the production of $J/\psi$ particles in photon-proton collisions. Using the values for the color-octet matrix elements extracted from fits to prompt $J/\psi$ data at the Tevatron, we demonstrate that distinctive color-octet signatures should be visible in $J/\psi$ photoproduction. However, these predictions appear at variance with recent experimental data obtained at HERA, indicating that the phenomenological importance of the color-octet contributions is smaller than expected from theoretical considerations and suggested by the Tevatron fits.

Published
1996

2. QCD corrections to inelastic J/$\psi$ photoproduction

Author

Krämerr, Michael

Subjects
bremsstrahlung: gluon, renormalization: dependence, gluon [bremsstrahlung], J/psi(3100) [photoproduction], electron p: inclusive reaction, energy spectrum, correction [quantum chromodynamics], fusion: photon gluon, gluon: bremsstrahlung, electroproduction: J/psi(3100), quantum chromodynamics: correction, photon quark [interaction], numerical calculations: interpretation of experiments, photoproduction [J/psi(3100)], interpretation of experiments [numerical calculations], inclusive reaction [photon p], J/psi(3100): photoproduction, spectrum: transverse momentum, ddc:530, higher-order [Feynman graph], interaction [photon quark], channel cross section: energy dependence, bremsstrahlung [gluon], J/psi(3100) [electroproduction], J/psi(3100): electroproduction, exchange [one-photon], Feynman graph: higher-order, perturbation theory: higher-order, dependence [renormalization], photoproduction: J/psi(3100), bibliography, one-photon: exchange, transverse momentum [spectrum], energy dependence [channel cross section], interaction: photon quark, electroproduction [J/psi(3100)], higher-order [perturbation theory], photon gluon [fusion], DESY HERA Stor, transverse momentum: spectrum, one-photon [exchange], spectrum [transverse momentum], inclusive reaction [electron p], photon p: inclusive reaction, photon quark: interaction, exchange: one-photon
Abstract

42 pp. (1996)., We present a complete calculation of the higher-order perturbative QCD corrections to inelastic photoproduction of J / ψ particles. A comprehensive analysis of total cross sections and differential distributions for the energy range of the fixed-target experiments and for inelastic J/ψ photoproduction at HERA is performed. The cross section and the J / ψ energy spectrum are compared wth the available photoproduction data including first results from HERA. This analysis will not only provide information on the gluon distribution of the proton but appears to be a clean test for the underlying picture of quarkonium production as developed so far in the perturbative QCD sector.

Published
1996
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3. Photoproduction of J /$\psi$ mesons at HERA

Author

Ahmed, T., Aid, S., Andreev, V., Andrieu, B., Appuhn, R. D., Arpagaus, M., Babaev, A., Bahr, J., Ban, J., Baranov, P., Barrelet, E., Bartel, W., Barth, M., Bassler, U., Beck, H. P., Behrend, H. J., Belousov, A., Berger, Christoph, Bergstein, H., Bernardi, G., Bernet, R., Bertrand-Coremans, G., Besancon, M., Beyer, R., Biddulph, P., Bizot, J. C., Blobel, V., Borras, K., Botterweck, F., Boudry, V., Braemer, A., Brasse, F., Braunschweig, W., Brisson, V., Bruncko, D., Brune, C., Buchholz, R., Bungener, L., Burger, J., Busser, F. W., Bunyatyan, A., Burke, Stephen, Buschhorn, G., Campbell, A. J., Carli, T., Charles, F., Clarke, D., Clegg, Arthur B., Colombo, M., Contreras, J. G., Coughlan, J. A., Courau, A., Coutures, C., Cozzika, G., Criegee, L., Cussans, D. G., Cvach, J., Dagoret, S., Dainton, J. B., Danilov, M., Dau, W. D., Daum, K., David, M., Deffur, E., Delcourt, B., Del Buono, L., de Roeck, A., De Wolf, E. A., Di Nezza, P., Dollfus, C., Dowell, J. D., Dreis, H. B., Duboc, J., Duellmann, Dirk, Dunger, O., Duhm, H., Ebert, J., Ebert, T. R., Eckerlin, Guenter, Efremenko, V., Egli, S., Ehrlichmann, H., Eichenberger, S., Eichler, R., Eisele, F., Eisenhandler, E., Ellison, R. J., Elsen, E., Erdmann, M., Erdmann, W., Evrard, E., Favart, L., Fedotov, A., Feeken, D., Felst, R., Feltesse, J., Ferencei, J., Ferrarotto, F., Flamm, K., Fleischer, M., Flieser, M., Flugge, G., Fomenko, A., Fominykh, B., Forbush, M., Formanek, J., Foster, J. M., Franke, G., Fretwurst, E., Gabathuler, E., Gabathuler, K., Gamerdinger, K., Garvey, J., Gayler, Joerg, Gebauer, M., Gellrich, A., Genzel, H., Gerhards, R., Goerlach, U., Goerlich, L., Gogitidze, N., Goldberg, M., Goldner, D., Gonzalez-Pineiro, B., Goodall, A. M., Gorelov, I., Gorichev, P., Grab, C., Grassler, H., Grassler, R., Greenshaw, T., Grindhammer, Guenter, Gruber, A., Gruber, C., Haack, J., Haidt, D., Hajduk, L., Hamon, O., Hampel, M., Hanlon, E. M., Hapke, M., Haynes, W. J., Heatherington, J., Hedberg, V., Heinzelmann, G., Henderson, R. C. W., Henschel, H., Herma, R., Herynek, I., Hess, M. F., Hildesheim, W., Hill, P., Hiller, K. H., Hilton, C. D., Hladky, J., Hoeger, K. C., Hoppner, M., Horisberger, R., Huet, P., Hufnagel, H., Ibbotson, M., Itterbeck, H., Jabiol, M. A., Jacholkowska, A., Jacobsson, C., Jaffre, M., Janoth, J., Jansen, T., Jonsson, L., Johannsen, K., Johnson, D. P., Johnson, L., Jung, H., Kalmus, P. I. P., Kant, D., Kaschowitz, R., Kasselmann, P., Kathage, U., Kaufmann, H. H., Ghazaryan, Samvel, Kenyon, I. R., Kermiche, S., Keuker, C., Kiesling, Christian M., Klein, M., Kleinwort, C., Knies, G., Ko, W., Kohler, T., Kolanoski, H., Kole, F., Kolya, S. D., Korbel, V., Korn, M., Kostka, P., Kotelnikov, S. K., Krasny, M. W., Krehbiel, H., Krucker, D., Kruger, U., Kruner-Marquis, U., Kubenka, J. P., Kuster, H., Kuhlen, M., Kurca, T., Kurzhofer, J., Kuznik, B., Lacour, D., Lamarche, F., Lander, R., Landon, M. P. J., Lange, W., Lanius, P., Laporte, J. F., Lebedev, A., Leverenz, C., Levonian, S., Ley, C., Lindner, A., Lindstrom, G., Linsel, F., Lipinski, J., List, B., Loch, P., Lohmander, H., Lopez, G. C., Luke, D., Magnussen, N., Malinovski, E., Mani, S., Maracek, R., Marage, P., Marks, J., Marshall, R., Martens, J., Martin, R., Martyn, H. U., Martyniak, J., Masson, S., Mavroidis, T., Maxfield, S. J., McMahon, S. J., Mehta, A., Meier, K., Mercer, D., Merz, T., Meyer, C. A., Meyer, H., Meyer, J., Mikocki, S., Milstead, D., Moreau, F., Morris, J. V., Muller, G., Muller, K., Murin, P., Nagovizin, V., Nahnhauer, R., Naroska, B., Naumann, T., Newman, Paul R., Newton, D., Neyret, D., Nguyen, H. K., Niebergall, F., Niebuhr, C., Nisius, R., Nowak, G., Noyes, G. W., Nyberg-Werther, M., Oberlack, H., Obrock, U., Olsson, J. E., Panaro, E., Panitch, A., Pascaud, C., Patel, G. D., Peppel, E., Perez, E., Phillips, J. P., Pichler, C., Pitzl, D., Pope, G., Prell, Soeren A., Prosi, R., Radel, G., Raupach, F., Reimer, P., Reinshagen, S., Ribarics, P., Riech, V., Riedlberger, J., Riess, S., Rietz, M., Robertson, S. M., Robmann, P., Roloff, H. E., Roosen, R., Rosenbauer, K., Rostovtsev, A., Rouse, F., Royon, C., Ruter, K., Rusakov, S., Rybicki, K., Rylko, R., Sahlmann, N., Sanchez, E., Sankey, D. P., Savitsky, M., Schacht, P., Schiek, S., Schleper, P., von Schlippe, W., Schmidt, C., Schmidt, D., Schmitz, G., Schoning, A., Schroder, V., Schuhmann, E., Schwab, B., Schwind, A., Seehausen, U., Sefkow, F., Seidel, M., Sell, R., Semenov, A., Chekelian, V. I., Sheviakov, I., Shooshtari, H., Shtarkov, L. N., Siegmon, G., Siewert, U., Sirois, Y., Skillicorn, I. O., Smirnov, P., Smith, J. R., Solovev, Ya., Spitzer, H., Starosta, R., Steenbock, M., Steffen, P., Steinberg, R., Stella, B., Stephens, K., Stier, J., Stiewe, J., Stosslein, U., Strachota, J., Straumann, U., Struczinski, W., Sutton, J. P., Tapprogge, S., Taylor, Richard E., Chernyshov, V., Thiebaux, C., Thompson, Graham, Tikhomirov, I., Truoel, Peter, Turnau, J., Tutas, J., Ulkes, P., Usik, A., Valkar, S., Valkarova, A., Vallee, C., Van Esch, P., Van Mechelen, P., Vartapetian, A., Vazdik, Y., Vecko, M., Verrecchia, P., Villet, G., Wacker, K., Wagener, A., Wagener, M., Walker, I. W., Walther, A., Weber, G., Weber, M., Wegener, D., Wegner, A., Wellisch, H. P., West, L. R., Willard, S., Winde, M., Winter, G. G., Wright, A. E., Wunsch, E., Wulff, N., Yiou, T. P., Zacek, J., Zarbock, D., Zhang, Z., Zimmer, M., Zimmermann, W., Zomer, F., Zuber, K., and H1 Collaboration

Subjects
spectrum: momentum transfer, electron p: inclusive reaction, J/psi(3100) [photoproduction], electroproduction: J/psi(3100), +muon%2B+muon%22">J/psi(3100) --> muon+ muon, momentum transfer [spectrum], transverse momentum [differential cross section], 296 GeV-cms, +positron+electron%22">J/psi(3100) --> positron electron, leptonic decay: J/psi(3100), differential cross section [transverse momentum], photoproduction [J/psi(3100)], J/psi(3100): photoproduction, inclusive reaction [photon p], transverse momentum: differential cross section, +J%2Fpsi%283100%29+anything%22">electron p --> J/psi(3100) anything, ddc:530, channel cross section: energy dependence, J/psi(3100) [electroproduction], J/psi(3100): electroproduction, colliding beams [electron p], DESY DESY HERA Stor Stor, photoproduction: J/psi(3100), electron p [colliding beams], energy dependence [channel cross section], J/psi(3100) [leptonic decay], electroproduction [J/psi(3100)], colliding beams: electron p, J/psi(3100): leptonic decay, electron p: colliding beams, differential cross section: transverse momentum, H1, momentum transfer: spectrum, spectrum [momentum transfer], leptonic decay [J/psi(3100)], photon p: inclusive reaction, inclusive reaction [electron p], experimental results
Abstract

13 pp. (1994)., We present a study of J ψ meson production in collisions of 26.7 GeV electrons with 820 GeV protons, performed with the H1-detector at the HERA collider at DESY. The J ψ mesons are detected via their leptonic decays both to electrons and muons. Requiring exactly two particles in the detector, a cross section of σ(ep → J ψ X) = (8.8±2.0±2.2) nb is determined for 30 GeV ≤ W γp ≤ 180 GeV and Q 2 ≲ 4 GeV 2 . Using the flux of quasi-real photons with Q 2 ≲ 4 GeV 2 , a total production cross section of σ ( γp → J / ψX ) = (56±13±14) nb is derived at an average W γp =90 GeV. The distribution of the squared momentum transfer t from the proton to the J ψ can be fitted using an exponential exp(− b ∥ t ∥) below a ∥ t ∥ of 0.75 GeV 2 yielding a slope parameter of b = (4.7±1.9) GeV −2 .

Published
1994

4. Measurement of the branching ratios for the decays $J\psi (3.1) \to f\omega$ and $J\psi (3.1) \to B\pi$

Author

Burmester, J., Criegee, L., Horlitz, G., Kahl, T., Knies, G., Rossler, M., Schmitz, R., Timm, U., Wahl, H., Waloschek, P., Winter, G. G., Wolff, S., Dehne, H. C., Zimmermann, W., Blobel, V., Koppitz, B., Lohrmann, E., Luhrsen, W., Backer, A., Burger, J., Grupen, C., Zech, Gunter, Meyer, H., Derikum, K., Wacker, K., PLUTO Collaboration, Devenish, R., Flugge, G., Fox, J. D., Franke, G., Gerke, C., and Harms, P.

Subjects
J/PSI(3100): ELECTROPRODUCTION, ELECTROPRODUCTION [J/PSI(3100)], FINAL STATE [PI0], J/PSI(3100): BRANCHING RATIO, J/PSI(3100): NONLEPTONIC DECAY, B(1235), PLUTO, +F%281260%29+OMEGA%28784%29%22">J/PSI(3100) --> F(1260) OMEGA(784), FINAL STATE [PI+], J/PSI(3100) [NONLEPTONIC DECAY], +2PI%2B+2PI-+PI0%22">ELECTRON POSITRON --> 2PI+ 2PI- PI0, BRANCHING RATIO [J/PSI(3100)], +B%281235%29+PI%22">J/PSI(3100) --> B(1235) PI, PI0 [FINAL STATE], COLLIDING BEAMS [ELECTRON POSITRON], PI+ [FINAL STATE], ANNIHILATION: ELECTRON POSITRON, ELECTROPRODUCTION: J/PSI(3100), ELECTRON POSITRON: COLLIDING BEAMS, ELECTRON POSITRON [ANNIHILATION], ANNIHILATION [ELECTRON POSITRON], PI+: FINAL STATE, PI0: FINAL STATE, J/PSI(3100) [ELECTROPRODUCTION], PI-: FINAL STATE, FINAL STATE: PI, FINAL STATE: PI0, MASS SPECTRUM, PI [FINAL STATE], NONLEPTONIC DECAY [J/PSI(3100)], FINAL STATE [PI-], OMEGA(784), ddc:530, COLLIDING BEAMS: ELECTRON POSITRON, EXPERIMENTAL RESULTS, FINAL STATE: PI+, 3.1 GEV-CMS, DESY DORIS STOR, ELECTRON POSITRON [COLLIDING BEAMS], PI: FINAL STATE, F(1260), FINAL STATE [PI], NONLEPTONIC DECAY: J/PSI(3100), PI- [FINAL STATE], ELECTRON POSITRON: ANNIHILATION
Abstract

(1977). doi:10.1016/0370-2693(77)90080-6, Decays of the J/ψ (3.1) resonance into final states with four charged and one neutral pion have been investigated. We measured the branching ratios J/ ψ (3.1) → f ω /all = 0.40 ± 0.14)% and J/ ψ (3.1) → (B + π − + B − π + )/all = (0.28 ± 0.07)%.

Published
1977
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5. MUON - NUCLEON SCATTERING: QCD RELATED EXPERIMENTAL RESULTS

Author

Brasse, F. W.

Subjects
VALIDITY TEST [QUANTUM CHROMODYNAMICS], MULTIPLE PRODUCTION: MUON, TRANSVERSE MOMENTUM [HADRON], DIFFERENTIAL CROSS SECTION, J/PSI(3100): ELECTROPRODUCTION, ELECTROPRODUCTION [J/PSI(3100)], EXPERIMENTAL RESULTS [SPECTROMETER], DIMUON [FINAL STATE], D: PAIR PRODUCTION, FINAL STATE: TRIMUON, HADRON: ELECTROPRODUCTION, MUON: MULTIPLE PRODUCTION, DIMUON: FINAL STATE, D: ELECTROPRODUCTION, ELECTROPRODUCTION [HADRON], FUSION: PHOTON GLUON, MULTIPLE PRODUCTION [MUON], ELECTROPRODUCTION [D], ELECTROPRODUCTION: HADRON, HADRON: TRANSVERSE MOMENTUM, MUON [MULTIPLE PRODUCTION], DEEP INELASTIC SCATTERING: MUON NUCLEON, SPECTROMETER: EXPERIMENTAL RESULTS, HADRON [ELECTROPRODUCTION], MUON NUCLEON: DEEP INELASTIC SCATTERING, STRUCTURE FUNCTION, SCALING: VIOLATION, VIOLATION [SCALING], FINAL STATE: DIMUON, FINAL STATE [DIMUON], 250: 280 GEV [120], ELECTROPRODUCTION: J/PSI(3100), CERN SPS, DEEP INELASTIC SCATTERING [MUON NUCLEON], PHOTON GLUON [FUSION], QUANTUM CHROMODYNAMICS: VALIDITY TEST, PAIR PRODUCTION: D, FINAL STATE [TRIMUON], J/PSI(3100) [ELECTROPRODUCTION], D [ELECTROPRODUCTION], TRIMUON [FINAL STATE], TRIMUON: FINAL STATE, PAIR PRODUCTION [D], 120: 250: 280 GEV, MUON NUCLEON [DEEP INELASTIC SCATTERING], D [PAIR PRODUCTION], ELECTROPRODUCTION: D
Abstract

15 pp. (1980). doi:10.3204/PUBDB-2017-13056

Published
1980
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6. Charm Spectroscopy using e+ e- Storage Rings

Author

Bartel, Wulfrin

Subjects
PSI(3700): WIDTH, DECAY MODES [PSI(3700)], PSI MESONS [HADRONIC DECAY], J/PSI(3100): ELECTROPRODUCTION, ELECTROPRODUCTION [J/PSI(3100)], LEPTONIC DECAY: CHARMED MESON, IIZUKA-OKUBO-ZWEIG [SELECTION RULE], SPIN [D], violation [CP], ELECTROPRODUCTION [HADRON], EXPERIMENTAL RESULTS: REVIEW, WIDTH [PSI(3700)], CASCADE DECAY [PSI(3700)], SPIN: D, QUANTUM NUMBER: J/PSI(3100), PSI MESONS: HADRONIC DECAY, CHARMONIUM [QUARK], HADRON [ELECTROPRODUCTION], STORAGE RING [ELECTRON POSITRON], PSI(3700) [QUANTUM NUMBER], ANNIHILATION: ELECTRON POSITRON, ELECTRON POSITRON [ANNIHILATION], ELECTROPRODUCTION [PSI(3700)], J/PSI(3100): QUANTUM NUMBER, D: PRODUCTION, ANNIHILATION [ELECTRON POSITRON], MASS [D], PSI MESONS: SPIN, ELECTROPRODUCTION [VECTOR MESON], D [MASS], PRODUCTION [D], ASSOCIATED PRODUCTION [D], DECAY MODES [J/PSI(3100)], WIDTH [J/PSI(3100)], J/PSI(3100) [DECAY MODES], D [DECAY MODES], HADRONIC DECAY: PSI MESONS, J/PSI(3100): WIDTH, CHARMED MESON: LEPTONIC DECAY, CP: violation, D [PRODUCTION], COLLIDING BEAMS: ELECTRON POSITRON, D: SPIN, CASCADE DECAY: PSI(3700), CHARMED MESON [LEPTONIC DECAY], D [SEMILEPTONIC DECAY], SYMMETRY: SU(3), LEPTONIC DECAY [CHARMED MESON], ELECTRON POSITRON [COLLIDING BEAMS], D: DECAY MODES, LUMINOSITY, PSI(3700) [ELECTROPRODUCTION], QUANTUM NUMBER [PSI(3700)], ELECTRON POSITRON: ANNIHILATION, SU(3) [SYMMETRY], PSI(3700) [CASCADE DECAY], QUARK: CHARMONIUM, EXPERIMENTAL RESULTS [REVIEW], HADRON: ELECTROPRODUCTION, PSI(3700): DECAY MODES, PSI MESONS [SPIN], DECAY MODES [D], ELECTROPRODUCTION: HADRON, DECAY MODES: PSI(3700), POSTULATED PARTICLE: ETA(C), DECAY MODES: J/PSI(3100), D [ASSOCIATED PRODUCTION], COLLIDING BEAMS [ELECTRON POSITRON], DECAY MODES: D, REVIEW [EXPERIMENTAL RESULTS], ELECTROPRODUCTION: J/PSI(3100), J/PSI(3100) [QUANTUM NUMBER], D: MASS, RATIO [TOTAL CROSS SECTION], ELECTRON POSITRON: COLLIDING BEAMS, D: SEMILEPTONIC DECAY, REVIEW: EXPERIMENTAL RESULTS, ELECTRON POSITRON: STORAGE RING, ETA(C) [POSTULATED PARTICLE], SELECTION RULE: IIZUKA-OKUBO-ZWEIG, PRODUCTION: D, MASS: D, VECTOR MESON [ELECTROPRODUCTION], ELECTROPRODUCTION: VECTOR MESON, J/PSI(3100) [ELECTROPRODUCTION], HADRONIC DECAY [PSI MESONS], ASSOCIATED PRODUCTION: D, RATIO: TOTAL CROSS SECTION, PSI(3700): ELECTROPRODUCTION, D: ASSOCIATED PRODUCTION, TOTAL CROSS SECTION [RATIO], QUANTUM NUMBER [J/PSI(3100)], LECTURES, D [SPIN], SPIN: PSI MESONS, SEMILEPTONIC DECAY: D, SEMILEPTONIC DECAY [D], PSI(3700) [DECAY MODES], PSI(3700): QUANTUM NUMBER, TOTAL CROSS SECTION: RATIO, ELECTROPRODUCTION: PSI(3700), SPIN [PSI MESONS], VECTOR MESON: ELECTROPRODUCTION, QUANTUM NUMBER: PSI(3700), J/PSI(3100): DECAY MODES, PSI(3700): CASCADE DECAY
Abstract

86 pp. (1980).

Published
1980
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7. Untersuchung von Zerfällen der $J/\psi(3.1)$-Resonanz in Baryonenpaare mit dem magnetischen Detektor PLUTO

Author

Harms, Petra

Subjects
ANTILAMBDA: FINAL STATE, LAMBDA [FINAL STATE], J/PSI(3100): ELECTROPRODUCTION, ELECTROPRODUCTION [J/PSI(3100)], BRANCHING RATIO: BOUNDARY CONDITION, FINAL STATE [PHOTON], +P+ANTI-P%22">J/PSI(3100) --> P ANTI-P, FINAL STATE: ANTI-P, J/PSI(3100): BRANCHING RATIO, J/PSI(3100): NONLEPTONIC DECAY, MOMENTUM [ENERGY SPECTRUM], THESIS, PLUTO, BOUNDARY CONDITION [BRANCHING RATIO], +P+ANTI-P+PI%2B+PI%22">J/PSI(3100) --> P ANTI-P PI+ PI, FINAL STATE [PI+], J/PSI(3100) [NONLEPTONIC DECAY], ENERGY SPECTRUM: MOMENTUM, BRANCHING RATIO [J/PSI(3100)], ENERGY DEPENDENCE [TOTAL CROSS SECTION], TOTAL CROSS SECTION: ENERGY DEPENDENCE, P [FINAL STATE], COLLIDING BEAMS [ELECTRON POSITRON], PI+ [FINAL STATE], ANNIHILATION: ELECTRON POSITRON, ELECTROPRODUCTION: J/PSI(3100), FINAL STATE [SIGMA0], LAMBDA: FINAL STATE, ELECTRON POSITRON: COLLIDING BEAMS, ELECTRON POSITRON [ANNIHILATION], ANGULAR DEPENDENCE [MOMENTUM SPECTRUM], ANNIHILATION [ELECTRON POSITRON], FINAL STATE: P, FINAL STATE [ANTISIGMA0], PI+: FINAL STATE, J/PSI(3100) [ELECTROPRODUCTION], ANGULAR DISTRIBUTION, FINAL STATE [ANTI-P], PI-: FINAL STATE, FINAL STATE: PI, FINAL STATE: SIGMA0, PHOTON [FINAL STATE], MASS SPECTRUM, FINAL STATE [P], ANTI-P [FINAL STATE], ANTISIGMA0: FINAL STATE, P: FINAL STATE, +SIGMA0%28P+PI-+PHOTON%29+ANTISIGMA0%28ANTI-P+PI%22">J/PSI(3100) --> SIGMA0(P PI- PHOTON) ANTISIGMA0(ANTI-P PI, FINAL STATE [LAMBDA], ANTILAMBDA [FINAL STATE], ANTI-P: FINAL STATE, NONLEPTONIC DECAY [J/PSI(3100)], MOMENTUM SPECTRUM: ANGULAR DEPENDENCE, FINAL STATE [PI-], FINAL STATE: ANTILAMBDA, PHOTON: FINAL STATE, +LAMBDA%28P+PI-%29+ANTILAMBDA%28ANTI-P+PI%2B%29%22">J/PSI(3100) --> LAMBDA(P PI-) ANTILAMBDA(ANTI-P PI+), SIGMA0 [FINAL STATE], COLLIDING BEAMS: ELECTRON POSITRON, EXPERIMENTAL RESULTS, FINAL STATE: PI+, ANTISIGMA0 [FINAL STATE], +J%2FPSI%283100%29%22">ELECTRON POSITRON --> J/PSI(3100), FINAL STATE [ANTILAMBDA], FINAL STATE: PHOTON, DESY DORIS STOR, FINAL STATE: LAMBDA, +2PI%2B+2PI%22">J/PSI(3100) --> 2PI+ 2PI, ELECTRON POSITRON [COLLIDING BEAMS], FINAL STATE: ANTISIGMA0, 3.1 GEV-CM, NONLEPTONIC DECAY: J/PSI(3100), PI- [FINAL STATE], SIGMA0: FINAL STATE, ELECTRON POSITRON: ANNIHILATION
Abstract

46 pp. (1978).

Published
1978
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8. Inclusive J$\psi$ production in $e^+ e^-$ annihilation in the energy range from 4.0-GeV to 5.0-GeV

Author

Burmester, J., Criegee, L., Kahl, T., Knies, G., Rossler, M., Schmitz, Ruediger, Timm, U., Wahl, H., Waloschek, P., Winter, G. G., Wolf, S., Zimmermann, W., Dehne, H. C., Blobel, V., Jensing, H., Koppitz, B., Lohrmann, E., Luhrsen, W., Backer, A., Burger, J., Grupen, C., Rost, M., Zech, Gunter, Derikum, K., Meyer, H., Wacker, K., PLUTO Collaboration, Devenish, R., Flugge, G., Fox, J. D., Franke, G., Gerke, C., and Horlitz, G.

Subjects
+J%2FPSI%283100%29+%28N%29CHARGED+PARTICLE%22">ELECTRON POSITRON --> J/PSI(3100) (N)CHARGED PARTICLE, J/PSI(3100): ELECTROPRODUCTION, ELECTROPRODUCTION [J/PSI(3100)], MUON+ [FINAL STATE], VIOLATION [SELECTION RULE], IIZUKA-OKUBO-ZWEIG [SELECTION RULE], +MUON%2B+MUON%22">J/PSI(3100) --> MUON+ MUON, PLUTO, DIRECT PRODUCTION [CHANNEL CROSS SECTION], ddc:530, FINAL STATE [MUON+], COLLIDING BEAMS: ELECTRON POSITRON, EXPERIMENTAL RESULTS, FINAL STATE [MUON-], SEARCH FOR: ENHANCEMENT, DESY DORIS STOR, FINAL STATE: MUON, PSI(3700): BACKGROUND, CHANNEL CROSS SECTION: DIRECT PRODUCTION, FINAL STATE: MUON+, ELECTRON POSITRON: INCLUSIVE REACTION, COLLIDING BEAMS [ELECTRON POSITRON], MUON-: FINAL STATE, ANNIHILATION: ELECTRON POSITRON, ELECTROPRODUCTION: J/PSI(3100), INCLUSIVE REACTION [ELECTRON POSITRON], ELECTRON POSITRON [COLLIDING BEAMS], RADIATIVE DECAY [PSI(3700)], BACKGROUND [PSI(3700)], ELECTRON POSITRON: COLLIDING BEAMS, J/PSI(3100): DIRECT PRODUCTION, ELECTRON POSITRON [ANNIHILATION], ENHANCEMENT [SEARCH FOR], SELECTION RULE: IIZUKA-OKUBO-ZWEIG, MUON+: FINAL STATE, SELECTION RULE: VIOLATION, ANNIHILATION [ELECTRON POSITRON], DIRECT PRODUCTION [J/PSI(3100)], MUON- [FINAL STATE], J/PSI(3100) [ELECTROPRODUCTION], PSI(3700): RADIATIVE DECAY, 4.0-5.0 GEV-CMS, ELECTRON POSITRON: ANNIHILATION
Abstract

(1977). doi:10.1016/0370-2693(77)90289-1, We report on inclusive production of J ψ (3.1)-mesons observed in e + e − -annihilation in the energy range s = 4.0–5.0 GeV . After substraction of the radiative tail of the ψ(3.7) direct production of the J ψ (3.1) is found to be in the order of 0.1% of the total hadronic cross section. No enhancements are seen at s = 4.03 GeV and 4.4 GeV. The level is in agreement with expectations from violation of the Zweig-rule.

Published
1977

9. Recent results on $e^+ e^-$ annihilation from PLUTO at DORIS

Author

Meyer, Hinrich

Subjects
MUON [ELECTROPRODUCTION], ELECTROPRODUCTION: MUON, K0(S): ELECTROPRODUCTION, J/PSI(3100): ELECTROPRODUCTION, ELECTROPRODUCTION [J/PSI(3100)], DIMUON [FINAL STATE], HADRON: ELECTROPRODUCTION, ELECTROPRODUCTION [HADRON], HEAVY LEPTON [ELECTROPRODUCTION], PLUTO, CHARMED MESON: ELECTROPRODUCTION, ELECTROPRODUCTION [MUON], ELECTROPRODUCTION: K0(S), MUON: ELECTROPRODUCTION, ELECTROPRODUCTION: HADRON, ELECTROPRODUCTION [HEAVY LEPTON], COLLIDING BEAMS: ELECTRON POSITRON, ELECTROPRODUCTION [K0(S)], CHARMED MESON [ELECTROPRODUCTION], HADRON [ELECTROPRODUCTION], FINAL STATE: (MUON ELECTRON), FINAL STATE: DIMUON, COLLIDING BEAMS [ELECTRON POSITRON], ELECTRON POSITRON: INCLUSIVE REACTION, ELECTROPRODUCTION: CHARMED MESON, ANNIHILATION: ELECTRON POSITRON, ELECTROPRODUCTION: J/PSI(3100), ELECTRON POSITRON [COLLIDING BEAMS], INCLUSIVE REACTION [ELECTRON POSITRON], ELECTROPRODUCTION [CHARMED MESON], ELECTRON POSITRON: COLLIDING BEAMS, ELECTRON POSITRON [ANNIHILATION], HEAVY LEPTON: ELECTROPRODUCTION, TOTAL CROSS SECTION, ELECTROPRODUCTION: HEAVY LEPTON, ANNIHILATION [ELECTRON POSITRON], J/PSI(3100) [ELECTROPRODUCTION], (MUON ELECTRON) [FINAL STATE], INTERPRETATION OF EXPERIMENTS, ELECTRON POSITRON: ANNIHILATION, K0(S) [ELECTROPRODUCTION]
Abstract

36 pp. (1977).

Published
1977
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10. Radiative decays of the J/$\psi$ and evidence for a new heavy resonance

Author

Braunschweig, W., Martyn, H.-U., Hultschig, H., Joos, P., Koch, W., Kotz, U., Krehbiel, H., Kreinick, D., McNeely, W. A., Moffeit, K. C., Petersen, A., Schliwa, M., Sander, H. G., Wiik, B. H., Wolf, G., Grindhammer, Guenter, Ludwig, J., Mess, K. H., Poelz, G., Ringel, J., Sauerberg, K., Schmueser, Peter, de Boer, W., Schmitz, Daniel, Buschhorn, G., Gunderson, B., Kotthaus, R., Lierl, H., Oberlack, H., Pretzl, K., Orito, S., Suda, T., Totsuka, Y., Yamada, S., Sturm, W., DASP Collaboration, Wallraff, W., Berkelman, Karl, Cords, D., Felst, R., and Gadermann, E.

Subjects
RADIATIVE DECAY: WIDTH, J/PSI(3100): ELECTROPRODUCTION, ELECTROPRODUCTION [J/PSI(3100)], FINAL STATE [PHOTON], ETA(549), (3PHOTON) [FINAL STATE], J/PSI(3100): BRANCHING RATIO, FINAL STATE [PI0], EXPERIMENTAL RESULTS [DESY DORIS STOR], EXPERIMENTAL RESULTS: DESY DORIS STOR, +X%282830%29+PHOTON%22">J/PSI(3100) --> X(2830) PHOTON, WIDTH: RADIATIVE DECAY, BRANCHING RATIO [J/PSI(3100)], +3PHOTON%22">J/PSI(3100) --> 3PHOTON, +ETA%28958%29+PHOTON%22">J/PSI(3100) --> ETA(958) PHOTON, +PI0+PHOTON%22">J/PSI(3100) --> PI0 PHOTON, PI0 [FINAL STATE], COLLIDING BEAMS [ELECTRON POSITRON], FINAL STATE: (3PHOTON), RADIATIVE DECAY [J/PSI(3100)], ANNIHILATION: ELECTRON POSITRON, ELECTROPRODUCTION: J/PSI(3100), ETA(958), ELECTRON POSITRON: COLLIDING BEAMS, ELECTRON POSITRON [ANNIHILATION], +ETA%28549%29+PHOTON%22">J/PSI(3100) --> ETA(549) PHOTON, ANNIHILATION [ELECTRON POSITRON], PI0: FINAL STATE, J/PSI(3100) [ELECTROPRODUCTION], X(2830), J/PSI(3100): RADIATIVE DECAY, MAGNETIC SPECTROMETER: DASP, FINAL STATE: PI0, PHOTON [FINAL STATE], PHOTON: FINAL STATE, WIDTH [RADIATIVE DECAY], DESY DORIS STOR [EXPERIMENTAL RESULTS], ddc:530, DESY DORIS STOR: EXPERIMENTAL RESULTS, COLLIDING BEAMS: ELECTRON POSITRON, 3.1 GEV-CMS, FINAL STATE: PHOTON, DASP [MAGNETIC SPECTROMETER], ELECTRON POSITRON [COLLIDING BEAMS], RADIATIVE DECAY [WIDTH], High Energy Physics::Experiment, ELECTRON POSITRON: ANNIHILATION
Abstract

(1977). doi:10.1016/0370-2693(77)90114-9, The three photon final state produced in e + e − collisions has been measured at the mass of the J ψ resonance using the nonmagnetic part of the double arm spectrometer DASP. The decays J ψ → ηγ, η'γ and π o γ were observed and their branching ratios are given. A four standard deviation signal was observed in the γγ mass spectrum at a mass of (2.83 ± 0.03) GeV. An upper limit is given for the direct decay J ψ → 3γ .

Published
1977

11. CORRELATIONS IN ELECTRON - POSITRON, LEPTON - HADRON AND HADRON - HADRON COLLISIONS

Author

Koch, Wolfgang

Subjects
CORRELATION: TWO-PARTICLE, 53 GEV-CMS [34], FRAGMENTATION [QUARK], CHARGED PARTICLE [ELECTROPRODUCTION], EXPERIMENTAL RESULTS [REVIEW], COLLIDING BEAMS [P P], J/PSI(3100): ELECTROPRODUCTION, ELECTROPRODUCTION [J/PSI(3100)], HADRONIC DECAY: J/PSI(3100), COLLIDING BEAMS [ANTI-P P], QUARK: FLAVOR, ANTI-P P [COLLIDING BEAMS], ASYMMETRY [MULTIPLE PRODUCTION], CORRELATION FUNCTION: RAPIDITY, CHARGED PARTICLE: MULTIPLICITY, COLLIDING BEAMS: ANTI-P P, MULTIPLE PRODUCTION [ASYMMETRY], COLLIDING BEAMS [ELECTRON POSITRON], HADROPRODUCTION: CHARGED PARTICLE, CORRELATION [BARYON ANTIBARYON], MULTIPLICITY [CHARGED PARTICLE], ANNIHILATION: ELECTRON POSITRON, BARYON ANTIBARYON: CORRELATION, ELECTROPRODUCTION: J/PSI(3100), ELECTRON POSITRON: COLLIDING BEAMS, ELECTRON POSITRON [ANNIHILATION], REVIEW: EXPERIMENTAL RESULTS, ANTI-P P [INTERACTION], P P [COLLIDING BEAMS], ANTI-P P: INTERACTION, ANNIHILATION [ELECTRON POSITRON], CHARGED PARTICLE: ELECTROPRODUCTION, RAPIDITY [CORRELATION FUNCTION], 34: 53 GEV-CMS, J/PSI(3100) [ELECTROPRODUCTION], P P: COLLIDING BEAMS, QUARK: FRAGMENTATION, INTERACTION [ANTI-P P], ANGULAR DEPENDENCE [MULTIPLICITY], INTERACTION: ANTI-P P, FLAVOR [QUARK], HADRONIC DECAY [J/PSI(3100)], J/PSI(3100) [HADRONIC DECAY], ELECTROPRODUCTION [CHARGED PARTICLE], CHARGED PARTICLE: MULTIPLE PRODUCTION, CHARGED PARTICLE [MULTIPLE PRODUCTION], TWO-PARTICLE [CORRELATION], ELECTROPRODUCTION: CHARGED PARTICLE, P P [INTERACTION], INTERACTION: P P, MULTIPLE PRODUCTION: ASYMMETRY, COLLIDING BEAMS: P P, COLLIDING BEAMS: ELECTRON POSITRON, MULTIPLICITY: ANGULAR DEPENDENCE, P P: INTERACTION, CHARGED PARTICLE: HADROPRODUCTION, MULTIPLE PRODUCTION [CHARGED PARTICLE], INTERACTION [P P], JET: CHARGE CORRELATION, J/PSI(3100): HADRONIC DECAY, ELECTRON POSITRON [COLLIDING BEAMS], ANTI-P P: COLLIDING BEAMS, CHARGE CORRELATION [JET], MULTIPLE PRODUCTION: CHARGED PARTICLE, ASYMMETRY: MULTIPLE PRODUCTION, CHARGED PARTICLE [HADROPRODUCTION], HADROPRODUCTION [CHARGED PARTICLE], ELECTRON POSITRON: ANNIHILATION
Abstract

30 pp. (1982).

Published
1982
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12. Results on two-body decays of the (3100)-resonance

Author

Criegee, L., Dehne, H. C., Waloschek, P., Winter, G. G., Wolff, S., Zimmermann, W., Fox, J., Franke, G., Horlitz, G., Knies, G., Lohrmann, E., Schmitz, R., Ranga Swamy, T. N., and Timm, U.

Subjects
WEAK INTERACTION [MODEL], DECAY MODES [J/PSI(3100)], FINAL STATE [P], ANTI-P [FINAL STATE], +P+ANTI-P+P%22">J/PSI(3100) --> P ANTI-P P, J/PSI(3100) [DECAY MODES], J/PSI(3100): ELECTROPRODUCTION, ELECTROPRODUCTION [J/PSI(3100)], P: FINAL STATE, MAGNETIC FIELD, FINAL STATE: ANTI-P, MUON+ [FINAL STATE], DECAY [BACKSCATTER], ANTI-P: FINAL STATE, PROPORTIONAL CHAMBER: EXPERIMENTAL RESULTS, BACKSCATTER: DECAY, +MUON%2B+MUON%22">J/PSI(3100) --> MUON+ MUON, BACKSCATTER [DECAY], EXPERIMENTAL RESULTS: PROPORTIONAL CHAMBER, FINAL STATE [MUON+], COLLIDING BEAMS: ELECTRON POSITRON, FINAL STATE [MUON-], MODEL: WEAK INTERACTION, P [FINAL STATE], DESY DORIS STOR, DECAY MODES: J/PSI(3100), FINAL STATE: MUON, FINAL STATE: MUON+, COLLIDING BEAMS [ELECTRON POSITRON], MUON-: FINAL STATE, FOUR-PI-DETECTOR, ELECTROPRODUCTION: J/PSI(3100), ELECTRON POSITRON [COLLIDING BEAMS], DECAY: FORWARD SCATTERING, ELECTRON POSITRON: COLLIDING BEAMS, PROPORTIONAL CHAMBER [EXPERIMENTAL RESULTS], J/PSI(3100): DECAY MODES, MUON+: FINAL STATE, FINAL STATE: P, MUON- [FINAL STATE], DECAY: BACKSCATTER, J/PSI(3100) [ELECTROPRODUCTION], FINAL STATE [ANTI-P], FORWARD SCATTERING [DECAY], EXPERIMENTAL RESULTS [PROPORTIONAL CHAMBER]
Abstract

10 pp. (1975).

Published
1975
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13. SELECTED TOPICS ON e+ e- PHYSICS

Author

Wolf, Guenter E.

Subjects
SPECTRUM [LONGITUDINAL MOMENTUM], TAU [ELECTROPRODUCTION], J/PSI(3100): ELECTROPRODUCTION, PSI MESONS, ELECTROPRODUCTION [J/PSI(3100)], BIBLIOGRAPHY, (3JET): FINAL STATE, HADRON: ELECTROPRODUCTION, LONGITUDINAL MOMENTUM [SPECTRUM], ELECTROPRODUCTION [HADRON], ONE-PHOTON [EXCHANGE], QUANTUM ELECTRODYNAMICS: VALIDITY TEST, UPSILON MESONS, TOP [SEARCH FOR], FORM FACTOR: HADRON, ELECTROPRODUCTION: HADRON, HADRON [ELECTROPRODUCTION], LECTURES: EXPERIMENTAL RESULTS, JET [ELECTROPRODUCTION], FINAL STATE: (3JET), ELECTROPRODUCTION: JET, SPECTRUM: LONGITUDINAL MOMENTUM, COLLIDING BEAMS [ELECTRON POSITRON], STORAGE RING [ELECTRON POSITRON], HADRON [FORM FACTOR], ANNIHILATION: ELECTRON POSITRON, ELECTROPRODUCTION: J/PSI(3100), EXPERIMENTAL RESULTS: LECTURES, ELECTRON POSITRON: COLLIDING BEAMS, RATIO [TOTAL CROSS SECTION], FINAL STATE [(3JET)], ELECTRON POSITRON: STORAGE RING, ELECTRON POSITRON [ANNIHILATION], ELECTROPRODUCTION [PSI(3700)], ANNIHILATION [ELECTRON POSITRON], EXCHANGE [ONE-PHOTON], ELECTROPRODUCTION [JET], SPECTRUM: TRANSVERSE MOMENTUM, EXPERIMENTAL RESULTS [LECTURES], J/PSI(3100) [ELECTROPRODUCTION], TRANSVERSE MOMENTUM: SPECTRUM, LECTURES [EXPERIMENTAL RESULTS], FORM FACTOR [HADRON], CHARMED PARTICLE, TAU: ELECTROPRODUCTION, RATIO: TOTAL CROSS SECTION, PSI(3700): ELECTROPRODUCTION, top, TOTAL CROSS SECTION [RATIO], (3JET) [FINAL STATE], HADRON: FORM FACTOR, CHARMONIUM, ELECTROPRODUCTION: TAU, TOTAL CROSS SECTION: RATIO, COLLIDING BEAMS: ELECTRON POSITRON, ELECTROPRODUCTION [TAU], SPECTRUM [TRANSVERSE MOMENTUM], JET: ELECTROPRODUCTION, ONE-PHOTON: EXCHANGE, ELECTROPRODUCTION: PSI(3700), VALIDITY TEST [QUANTUM ELECTRODYNAMICS], MODEL: QUARK PARTON, ELECTRON POSITRON [COLLIDING BEAMS], EXCHANGE: ONE-PHOTON, QUARK PARTON [MODEL], SEARCH FOR: TOP, TRANSVERSE MOMENTUM [SPECTRUM], PSI(3700) [ELECTROPRODUCTION], LONGITUDINAL MOMENTUM: SPECTRUM, ELECTRON POSITRON: ANNIHILATION
Abstract

182 pp. (1980).

Published
1980

14. Untersuchung von Bhabhastreuung und kollinearen Photonpaaren für Schwerpunktsenergien von 3.1 und 3.7 GeV und von Strahlungszerfällen der $J/\psi$-Resonanz in pseudoskalare Mesonen am Speicherring DORIS

Author

Ludwig, Jens

Subjects
ELECTRON [FINAL STATE], +POSITRON+ELECTRON%22">PSI(3700) --> POSITRON ELECTRON, PHOTON: PAIR PRODUCTION, J/PSI(3100): ELECTROPRODUCTION, ELECTROPRODUCTION [J/PSI(3100)], FINAL STATE [PHOTON], ETA(549), ELECTROMAGNETIC DECAY [J/PSI(3100)], (3PHOTON) [FINAL STATE], FINAL STATE [PI0], THESIS, +2PHOTON%22">ELECTRON POSITRON --> 2PHOTON, FINAL STATE: POSITRON, +POSITRON+ELECTRON%22">J/PSI(3100) --> POSITRON ELECTRON, FINAL STATE [ELECTRON], +ETA%28958%29+PHOTON%22">J/PSI(3100) --> ETA(958) PHOTON, +PI0+PHOTON%22">J/PSI(3100) --> PI0 PHOTON, PI0 [FINAL STATE], COLLIDING BEAMS [ELECTRON POSITRON], FINAL STATE: (3PHOTON), RADIATIVE DECAY [J/PSI(3100)], POSITRON: FINAL STATE, ANNIHILATION: ELECTRON POSITRON, ELECTROPRODUCTION: J/PSI(3100), ETA(958), POSITRON [FINAL STATE], FINAL STATE: ELECTRON, ELECTRON POSITRON: COLLIDING BEAMS, ELECTRON POSITRON [ELASTIC SCATTERING], J/PSI(3100): ELECTROMAGNETIC DECAY, ELECTRON POSITRON [ANNIHILATION], ELECTROPRODUCTION [PSI(3700)], 3.1: 3.7 GEV-CMS, PHOTON [PAIR PRODUCTION], +ETA%28549%29+PHOTON%22">J/PSI(3100) --> ETA(549) PHOTON, ELASTIC SCATTERING: ELECTRON POSITRON, ELASTIC SCATTERING [ELECTRON POSITRON], ANNIHILATION [ELECTRON POSITRON], PI0: FINAL STATE, J/PSI(3100) [ELECTROPRODUCTION], PAIR PRODUCTION: PHOTON, MAGNETIC SPECTROMETER: DASP, J/PSI(3100): RADIATIVE DECAY, FINAL STATE: PI0, PHOTON [FINAL STATE], PSI(3700): ELECTROPRODUCTION, ELECTRON POSITRON: ELASTIC SCATTERING, PHOTON: FINAL STATE, PSI(3700): ELECTROMAGNETIC DECAY, MAGNETIC SPECTROMETER: EXPERIMENTAL RESULTS, COLLIDING BEAMS: ELECTRON POSITRON, ELECTROMAGNETIC DECAY [PSI(3700)], MAGNETIC SPECTROMETER [EXPERIMENTAL RESULTS], ELECTRON: FINAL STATE, FINAL STATE: PHOTON, DESY DORIS STOR, DASP [MAGNETIC SPECTROMETER], 3.7 GEV-CMS [3.1], ELECTROPRODUCTION: PSI(3700), ELECTRON POSITRON [COLLIDING BEAMS], PAIR PRODUCTION [PHOTON], PSI(3700) [ELECTROPRODUCTION], FINAL STATE [POSITRON], EXPERIMENTAL RESULTS: MAGNETIC SPECTROMETER, EXPERIMENTAL RESULTS [MAGNETIC SPECTROMETER], ELECTRON POSITRON: ANNIHILATION
Abstract

58 pp. (1976).

Published
1976
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15. Measurement of the $J\psi$ radiative decay into $F_0$ (1270) $\gamma$

Author

Alexander, G., Criegee, L., Horlitz, G., Kahl, T., Knies, G., Rossler, M., Schmitz, R., Timm, U., Wahl, H., Waloschek, P., Winter, Graeme, Wolff, S., Dehne, H. C., Zimmermann, W., Blobel, V., Koppitz, B., Lohrmann, E., Luhrsen, W., Backer, A., Burger, J., Grupen, C., Zech, Gunter, Meyer, H., Derikum, K., Wacker, K., PLUTO Collaboration, Devenish, R., Flugge, G., Fox, J. D., Franke, G., Gerke, C., and Harms, P.

Subjects
+F%281260%29+PHOTON%22">J/PSI(3100) --> F(1260) PHOTON, J/PSI(3100): ELECTROPRODUCTION, ELECTROPRODUCTION [J/PSI(3100)], FINAL STATE [PHOTON], FINAL STATE [PI0], J/PSI(3100): BRANCHING RATIO, J/PSI(3100): NONLEPTONIC DECAY, PLUTO, FINAL STATE [PI+], J/PSI(3100) [NONLEPTONIC DECAY], BRANCHING RATIO [J/PSI(3100)], +RHO%28770%29+PI0%22">J/PSI(3100) --> RHO(770) PI0, PI0 [FINAL STATE], COLLIDING BEAMS [ELECTRON POSITRON], +PI%2B+PI%22">F(1260) --> PI+ PI, RADIATIVE DECAY [J/PSI(3100)], PI+ [FINAL STATE], ANNIHILATION: ELECTRON POSITRON, ELECTROPRODUCTION: J/PSI(3100), ELECTRON POSITRON: COLLIDING BEAMS, ELECTRON POSITRON [ANNIHILATION], ANNIHILATION [ELECTRON POSITRON], PI+: FINAL STATE, PI0: FINAL STATE, J/PSI(3100) [ELECTROPRODUCTION], PI-: FINAL STATE, J/PSI(3100): RADIATIVE DECAY, +PI%2B+PI%22">RHO(770) --> PI+ PI, FINAL STATE: PI, (PI+ PI-) [MASS SPECTRUM], FINAL STATE: PI0, PHOTON [FINAL STATE], NONLEPTONIC DECAY [J/PSI(3100)], FINAL STATE [PI-], MASS SPECTRUM: (PI+ PI-), PHOTON: FINAL STATE, ddc:530, COLLIDING BEAMS: ELECTRON POSITRON, EXPERIMENTAL RESULTS, FINAL STATE: PI+, 3.1 GEV-CMS, FINAL STATE: PHOTON, DESY DORIS STOR, ELECTRON POSITRON [COLLIDING BEAMS], F(1260), NONLEPTONIC DECAY: J/PSI(3100), PI- [FINAL STATE], ELECTRON POSITRON: ANNIHILATION, RHO(770)
Abstract

(1978). doi:10.1016/0370-2693(78)90742-6, The J/ψ decay modes f 0 (1270)γ and ρπ have been studied in e + e − collision at 3.1 GeV center of mass energy leading to the π + π − γ and π + π − π 0 final states. The f 0 γ decay branching ratio is measured to be (0.20 ± 0.07) × 10 −2 , a value comparable to the J/ψ radiative decay rates into the ηγ and η′γ channels. The J/ψ decay branching ratio into ϱπ is measured to be (1.6 ± 0.4) × 10 −2 .

Published
1977
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