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12 results on '"Mark-J Collaboration"'

1. Search for the Production of a New Quark Flavor at the c.m.-System Energies between 33 and 35.8 GeV

Author

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

Subjects
Quark, Particle physics, MUON [ELECTROPRODUCTION], High Energy Physics::Lattice, Electron–positron annihilation, Hadron, General Physics and Astronomy, DESY PETRA STOR, Elementary particle, TOTAL CROSS SECTION [RATIO], SPECTRUM [THRUST], Nuclear physics, ELECTROPRODUCTION [HADRON], TOTAL CROSS SECTION [ENERGY DEPENDENCE], ddc:550, TOP [SEARCH FOR], ELECTROPRODUCTION [MUON], THRUST [SPECTRUM], Nuclear Experiment, EXPERIMENTAL RESULTS, ENERGY DEPENDENCE [TOTAL CROSS SECTION], Quantum chromodynamics, Physics, HADRON [ELECTROPRODUCTION], Annihilation, Muon, JET [ELECTROPRODUCTION], High Energy Physics::Phenomenology, Quark model, COLLIDING BEAMS [ELECTRON POSITRON], ELECTRON POSITRON [COLLIDING BEAMS], INCLUSIVE REACTION [ELECTRON POSITRON], RATIO [TOTAL CROSS SECTION], ELECTRON POSITRON [ANNIHILATION], ANNIHILATION [ELECTRON POSITRON], ELECTROPRODUCTION [JET], MARK J, High Energy Physics::Experiment, 35.0: 35.8 GEV-CM [33.0]
Abstract

This paper reports the results of a study of hadron production in e/sup +/e/sup -/ collisions at c.m. energies of 33, 35, and 35.8 GeV. Production of a new quark flavor has been sought. The measured values of the total cross section, the thrust distributions, and the study of inclusive muon production show no evidence for the production of a new charge-2/3e quark near threshold. In addition, during an energy scan in the region 29.9< or =..sqrt..s< or =31.6 GeV, no hadron resonance indicating the existence of a bound state composed of charge-2/3e quarks has been found.

Published
1980
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2. Measurement of the Relative Total Hadronic Cross Section $R$ at PETRA

Author

Barber, D., Becker, U., Cheng, C. P., Chu, Y. S., Clare, R., Duinker, P., Fesefeldt, H., Fong, H., Fukushima, M., Ho, M. C., Hsu, T. T., Kadel, R., Benda, H., Luckey, D., Ma, C. M., Massaro, G., Matsuda, T., Newman, H., Paradiso, J., Revol, J. P., Rohde, M., Rykaczewski, H., Sinram, K., Boehm, A., Tang, H. W., Ting, Samuel C. C., Tung, K. L., Vannucci, F., White, M., Wu, T. W., Yang, P. C., Yu, C. C., Mark-J Collaboration, Branson, J. G., Bron, J., Buikman, D., Burger, J., Chang, C. C., Chen, M., Institut de Physique Nucléaire d'Orsay (IPNO), and Université Paris-Sud - Paris 11 (UP11)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS)

Subjects
Physics, Particle physics, Muon, 010308 nuclear & particles physics, Hadron, General Physics and Astronomy, 01 natural sciences, Nuclear physics, Cross section (physics), Angular distribution, 0103 physical sciences, [PHYS.HEXP]Physics [physics]/High Energy Physics - Experiment [hep-ex], ddc:550, 010306 general physics, Lepton
Abstract

Physical review letters 42(17), 1113 - 1117 (1979). doi:10.1103/PhysRevLett.42.1113, Published by APS, College Park, Md.

Published
1979
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3. Search for the Supersymmetric Partners of the $Z^0$ and $W^±$

Author

Adeva, B., Barber, D. P., Chang, Y. H., Chen, H. S., Chen, M., Chen, M. L., Chen, M. Y., Deffur, E., Demarteau, M., Dong, B. Z., Duinker, P., Fesefeldt, H. S., Becker, U., Fong, D., Fukushima, M., Garrido, L., Han, R. D., Harting, D., Herten, G., Ho, M. C., Hussain, M., Ilyas, M. M., Jiang, C. H., Berdugo, J., Jiang, D. Z., Krenz, W., Kuijer, P., Li, Q. Z., Linnhöfer, D., Luckey, D., Luit, E. J., Mana, C., Marquina, M. A., Martinez, M., Boehm, A., Massaro, G. G. G., Mnich, J., Mount, R., Nadeem, K., Newman, H., Pohl, M., Poschmann, F. P., Rau, R. R., Rodriguez, S., Rohde, M., Branson, J. G., Rubio, J. A., Rykaczewski, H., Salicio, J., Schröder, U., Stone, H., Swider, G. M., Tang, H. W., Teuchert, D., Ting, Samuel C. C., Tung, K. L., Burger, J. D., Wang, M. Q., White, M., Wu, H. G., Wu, S. X., Wyslouch, B., Yang, B. X., Zhou, B., Zhu, R. Y., Zhu, Y. C., Mark-J Collaboration, Capell, M., Cerrada, M., and Chang, C. C.

Subjects
ddc:550
Abstract

Physical review letters 53(19), 1806 - 1809 (1984). doi:10.1103/PhysRevLett.53.1806, Published by APS, College Park, Md.

Published
1984
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4. Measurement of $e ^+$$ e^ − $ $\to$ $\mu^ +$$ \mu^ −$ : A Test of Electroweak Theories

Author

Adeva, B., Becker, U., Chang, Y. H., Chen, H. S., Chen, M., Chen, M. L., Chen, M. Y., Chu, Y. S., Deffur, E., Deiters, K., Demarteau, M., Dong, B. Z., Becker-Szendy, R., Duinker, P., Fesefeldt, H. S., Fong, D., Fukushima, M., Garrido, L., Han, R. D., Harting, D., Herten, G., Ho, M. C., Hueser, D., Berdugo, J., Hussain, M., Ilyas, M. M., Jiang, D. Z., Klein, M., Krenz, W., Kuijer, P., Leiste, R., Li, Q. Z., Linnhoefer, D., Luckey, D., Boehm, A., Luit, E. J., Mana, C., Marquina, M. A., Martinez, M., Massaro, G. G. G., Mnich, J., Mount, R., Nadeem, K., Newman, H., Nowak, W. D., Branson, J. G., Pohl, M., Poschmann, F. P., Rau, R. R., Rodriguez, S., Rohde, M., Rubio, J. A., Rykaczewski, H., Sachwitz, M., Salicio, J., Schreiber, H. J., Burger, J. D., Schroeder, U., Schug, J., Stone, H., Swider, G. M., Tang, H. W., Teuchert, D., Ting, Samuel C. C., Tung, K. L., Vogt, H., Wang, M. Q., Capell, M., White, M., Wu, H. G., Wu, S. X., Wyslouch, B., Yang, B. X., Zhou, B., Zhu, R. Y., Mark-J Collaboration, Cerrada, M., and Chang, C. C.

Subjects
ddc:550
Abstract

Physical review letters 55(7), 665 - 668 (1985). doi:10.1103/PhysRevLett.55.665, Published by APS, College Park, Md.

Published
1985
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5. Discovery of Three Jet Events and a Test of Quantum Chromodynamics at PETRA Energies

Author

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

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

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

Published
1979
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6. Test of Universality of Charged Leptons

Author

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

Subjects
Elastic scattering, Physics, Particle physics, Muon, Electron–positron annihilation, General Physics and Astronomy, Elementary particle, Fermion, Nuclear physics, Pair production, TheoryofComputation_ANALYSISOFALGORITHMSANDPROBLEMCOMPLEXITY, ddc:550, Bhabha scattering, Lepton
Abstract

Physical review letters 43(26), 1915 - 1918 (1979). doi:10.1103/PhysRevLett.43.1915, Published by APS, College Park, Md.

Published
1979
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7. RECENT MEASUREMENTS OF TWO PHOTON MUON PAIR PROCESS FROM MARK-J AT $\sqrt{s}$ UP TO 46.78-GeV

Author

Zhang, C. C. and MARK-J Collaboration

Subjects
two-photon [exchange], 14.00-46.78 GeV-cms, electron positron: inelastic scattering, transverse momentum [differential cross section], +muon%2B+muon-+positron+electron%22">electron positron --> muon+ muon- positron electron, validity test [quantum electrodynamics], search for [new particle], interaction [photon photon], photon photon: interaction, 14.0-46.8 GEV-CMS, muon: electroproduction, pair production [muon], asymmetry [charge], total cross section, exchange: two-photon, (muon+ muon-) [mass spectrum], inelastic scattering [electron positron], +MUON%2B+MUON-+POSITRON+ELECTRON%22">ELECTRON POSITRON --> MUON+ MUON- POSITRON ELECTRON, perturbation theory: higher-order, quantum electrodynamics: validity test, electron positron: colliding beams, new particle: search for, higher-order [perturbation theory], muon: pair production, mass spectrum: (muon+ muon-), differential cross section: transverse momentum, charge: asymmetry, MARK J, DESY PETRA Stor, colliding beams [electron positron], electroproduction [muon], talk, experimental results
Abstract

28 pp. (1985).

Published
1985
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8. Experimental Study of Heavy Charged Leptons and Search for Scalar Partners of Muons at PETRA $( 12 GeV <~ E c . m . <~ 36.7 GeV )$

Author

Barber, D. P., Becker, U., Chang, C. C., Chen, H. S., Chen, M., Cheng, C. P., Chu, Y. S., Clare, R., Duinker, P., Fang, G. Y., Feng, Z. Y., Fesefeldt, H. S., Bei, G. D., Fong, D., Fukushima, M., Guo, J. C., Hariri, A., Herten, G., Ho, M. C., Hsu, T. T., Jiang, D. Z., Kadel, R. W., Krenz, W., Berghoff, G., Li, J., Li, Q. Z., Luckey, D., Luit, E. J., Ma, C. M., Ma, D. A., Massaro, G. G. G., Matsuda, T., Newman, H., Pohl, M., Boehm, A., Poschmann, F. P., Revol, J. P., Rohde, M., Rykaczewski, H., Schulz, I., Sinram, K., Steuer, M., Tang, H. W., Tang, L. G., Teuchert, D., Branson, J. G., Ting, Samuel C. C., Tung, K. L., Vannucci, F., Wang, X. R., Wang, Y. X., Warnock, J., White, M., Wu, G. H., Wu, S. X., Wu, T. W., Bron, J., Yang, P. C., Yu, C. C., Zhang, N. L., Zhu, R. Y., Mark-J Collaboration, Buikman, D., Burger, J. D., and Capell, M.

Subjects
ddc:550
Abstract

Physical review letters 45(24), 1904 - 1907 (1980). doi:10.1103/PhysRevLett.45.1904, Published by APS, College Park, Md.

Published
1980
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9. Study of electron-positron collisions at center-of-mass energies of 27.4 and 27.7 GeV at Petra

Author

Barber, D. P., Becker, U., Cheng, C. P., Chu, Y. S., Clare, R., Duinker, P., Fesefeldt, H., Fong, D., Fukushima, M., Herten, G., Ho, M. C., Hsu, H. K., Benda, H., Hsu, T. T., Kadel, R. W., Krenz, W., Luckey, D., Ma, C. M., Massaro, G. G. G., Matsuda, T., Newman, H., Paradiso, J., Poschmann, F. P., Boehm, A., Revol, J. P., Rohde, M., Rykaczewski, H., Sinram, K., Tang, H. W., Ting, Samuel C. C., Tung, K. L., Vannucci, F., White, M., Wu, T. W., Branson, J. G., Yang, P. C., Mark-J Collaboration, Bron, J., Buikman, D., Burger, J., Chang, C. C., Chen, M., BOMBAR, Claudine, Laboratoire d'Annecy de Physique des Particules (LAPP), and Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université Savoie Mont Blanc (USMB [Université de Savoie] [Université de Chambéry])-Centre National de la Recherche Scientifique (CNRS)

Subjects
Physics, Particle physics, Annihilation, [PHYS.HEXP] Physics [physics]/High Energy Physics - Experiment [hep-ex], 010308 nuclear & particles physics, Quark model, Hadron, General Physics and Astronomy, Elementary particle, Electron, 01 natural sciences, Positron, 0103 physical sciences, ddc:550, [PHYS.HEXP]Physics [physics]/High Energy Physics - Experiment [hep-ex], High Energy Physics::Experiment, Production (computer science), Center of mass, 010306 general physics
Abstract

Physical review letters 43(13), 901 - 903 (1979). doi:10.1103/PhysRevLett.43.901, Published by APS, College Park, Md.

Published
1979
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10. Search for New Particles in $e^ +$$ e^ −$ Annihilation from 39.79 to 45.52 $GeV$

Author

Adeva, B., Barber, D. P., Chen, M., Chen, M. L., Chen, M. Y., Chu, Y. S., Deffur, E., Demarteau, M., Dong, B. Z., Duinker, P., Fesefeldt, H. S., Fong, D., Becker, U., Fukushima, M., Han, R. D., Harting, D., Hebbeker, T., Herten, G., Hussain, M., Ilyas, M. M., Jiang, C. H., Jiang, D. Z., Krenz, W., Berdugo, J., Kuijer, P., Luckey, D., Luit, E. J., Mana, C., Marquina, M. A., Massaro, G. G. G., Mount, R., Nadeem, K., Newman, H., Pohl, M., Boehm, A., Poschmann, F. P., Rau, R. R., Rodriguez, S., Rohde, M., Rubio, J. A., Rykaczewski, H., Salicio, J., Schulz, I., Stone, H., Swider, G. M., Branson, J. G., Tang, H. W., Teuchert, D., Ting, Samuel C. C., Tung, K. L., Wang, M. Q., White, M., Wu, H. G., Wu, S. X., Wyslouch, B., Yang, B. X., Burger, J. D., Chang, C. C., Zhou, B., Zhu, R. Y., Zhu, Y. C., Mark-J Collaboration, Capell, M., Cerrada, M., and Chen, H. S.

Subjects
ddc:550
Abstract

Physical review letters 53(2), 134 - 137 (1984). doi:10.1103/PhysRevLett.53.134, Published by APS, College Park, Md.

Published
1984
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11. Test of Quantum Electrodynamics at $s^ {1/ 2}$ = $13$ and 17 $GeV$

Author

Barber, D., Becker, U., Cheng, C. P., Chu, Y. S., Clare, R., Duinker, P., Fesefeldt, H., Fong, D., Fukushima, M., Ho, M. C., Hsu, T. T., Kadel, R., Benda, H., Luckey, D., Ma, C. M., Massaro, G., Matsuda, T., Newman, H., Paradiso, J., Revol, J. P., Rohde, M., Rykaczewski, H., Sinram, K., Boehm, A., Tang, H. W., Ting, Samuel C. C., Tung, K. L., Vannucci, F., White, M., Wu, T. W., Yang, P. C., Yu, C. C., Mark-J Collaboration, Branson, J. G., Bron, J., Buikman, D., Burger, J., Chang, C. C., and Chen, M.

Subjects
ddc:550
Abstract

Physical review letters 42(17), 1110 - 1113 (1979). doi:10.1103/PhysRevLett.42.1110, Published by APS, College Park, Md.

Published
1979
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12. Measurement of Strong-Coupling Constant $\alpha_ s$ to Second Order for $22$ $\leqq$ $\sqrt{s}$ $\leqq$ $ 46.78 GeV$

Author

Adeva, B., Becker, U., Chang, Y. H., Chen, H. S., Chen, M., Chen, M. L., Chen, M. Y., Deffur, E., Demarteau, M., Dong, B. Z., Duinker, P., Fesefeldt, H. S., Becker-Szendy, R., Fong, D., Fukushima, M., Garrido, L., Han, R. D., Harting, D., Herten, G., Ho, M. C., Hueser, D., Hussain, M., Ilyas, M. M., Berdugo, J., Jiang, D. Z., Krenz, W., Kuijer, P., Li, Q. Z., Linnhoefer, D., Luckey, D., Luit, E. J., Mana, C., Marquina, M. A., Martinez, M., Boehm, A., Massaro, G. G. G., Mnich, J., Mount, R., Nadeem, K., Newman, H., Pohl, M., Poschmann, F. P., Rau, R. R., Rodriguez, S., Rohde, M., Branson, J. G., Rubio, J. A., Rykaczewski, H., Salicio, J., Schroeder, U., Stone, H., Swider, G. M., Tang, H. W., Teuchert, D., Ting, Samuel C. C., Tung, K. L., Burger, J. D., Wang, M. Q., White, M., Wu, H. G., Wu, S. X., Wyslouch, B., Yang, B. X., Zhou, B., Zhu, R. Y., Mark-J Collaboration, Capell, M., Cerrada, M., and Chang, C. C.

Subjects
ddc:550
Abstract

Physical review letters 54(16), 1750 - 1753 (1985). doi:10.1103/PhysRevLett.54.1750, Published by APS, College Park, Md.

Published
1985
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