Author: "Kracht, T / Topic: nuclear physics - Searchworks@Jio Institute Digital Library Search Results

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1. AN IMPROVED MEASUREMENT OF ELECTROWEAK COUPLINGS FROM E+E--]E+E- AND E+E--]MU+MU

Author: K. Lübelsmeyer, H. M. Fischer, Gl Salmon, M. Wollstadt, R. J. Cashmore, T. D. Jones, H. U. Martyn, T. Barklow, Walter Dr. Hillen, D. H. Saxon, D. Trines, E.E. Ronat, W. Koch, G. Peise, H. Siebke, B. Foster, D. M. Binnie, U. Kötz, Guenter Wolf, M. Althoff, D. Notz, G. Poelz, J. McCardle, D. A. Garbutt, T. R. Wyatt, Michael Dittmar, G. Yekutieli, R.C.E. Devenish, Georg Zobernig, A. Jocksch, Y. Eisenberg, G. Knop, W. Braunschweig, T. Kracht, D. Strom, W. Wallraff, H. Hartmann, Hermann Kolanoski, J. K. Sedgbeer, M. Rushton, A. Shapira, Norbert Wermes, K. Gather, A. Ladage, G. Rudolph, H. Kück, H. Kowalski, H. Venkataramania, J. Harvey, J. Proudfoot, R. Wedemeyer, H. Burkhardt, J. Pyrlik, C. Youngman, I. C. Brock, G. Mikenberg, D. K. Hasell, E. Hilger, R. Beuselinck, A. Caldwell, Ch. Xiao, C. Jenkins, Ehud Duchovni, D. Pandoulas, Joseph Izen, M. G. Bowler, D. R. Quarrie, F. J. Kirschfink, M. Holder, P. Grossmann, B. Löhr, H. Hultschig, K. W. Bell, P. Mättig, P. Joos, W. G. Jones, P. L. Woodworth, J. Rimkus, B. H. Wiik, W. Schütte, John Hart, E. Wicklund, Sau Lan Wu, W. A. T. Wan Abdullah, Fernando Barreiro, P. E. L. Clarke, P. Rosskamp, M. Mermikides, D. Revel, R. Mir, Hl Krasemann, L. Köpke, M. Cherney, E. Lohrmann, B. Neumann, H. G. Sander, D.W. Schmitz, U. Karshon, P. J. Dornan, A. J. Campbell, R. Fohrmann, Juergen Thomas, D. Lüke, S. L. Llyod, and P. Leu
Subjects: Physics, Particle physics, Muon, Physics and Astronomy (miscellaneous), High Energy Physics::Phenomenology, Electroweak interaction, Elementary particle, Weinberg angle, Fermion, Nuclear physics, Pair production, High Energy Physics::Experiment, Engineering (miscellaneous), Bhabha scattering, Lepton
Abstract: We present an analysis of electroweak leptonic couplings from high statistics experiments on Bhabha scattering and μ pair production at an energy of 34.5 GeV. The forward-backward charge asymmetry of the μ pairs was measured to be −0.098±0.023±0.005. The data were found to agree well with the standard theory of electroweak interaction giving sin2θW=0.27±0.07. The leptonic weak couplings were determined to begv=0.000±0.170 andgA=−0.481±0.055. The data were also used to investigate a class of composite models for leptons.
Published: 2016

2. A STUDY OF 3-JET EVENTS IN E+E- ANNIHILATION INTO HADRONS AT 34.6 GEV CM ENERGY

Author: G. Baranko, Y. Eisenberg, W. Braunschweig, A. Caldwell, C. M. Hawkes, Stephen Lloyd, V. Mertens, Michael Dittmar, G. Yekutieli, R. Mir, P. Mättig, D. K. Hasell, K. W. Bell, H. Kowalski, M. Holder, D. M. Binnie, H. Siebke, H. Hultschig, M. Takashima, Wolfram Dietrich Zeuner, E. Bernardi, John Hart, Joseph Izen, D. H. Saxon, H. M. Fischer, G. Poelz, Ehud Duchovni, R. Rosskamp, D. Trines, S. L. Wu, B. Löhr, R.C.E. Devenish, A. Eskreys, H. Venkataramania, Georg Zobernig, P. Joos, B. Foster, D. Strom, J. Pyrlik, E. Hilger, U. Karshon, G. Mikenberg, H. Hartmann, G. P. Heath, Hl Krasemann, W. Wallraff, Philip Bull, M. G. Bowler, W. G. Jones, Stephanie Brandt, E. Lohrmann, A. Montag, E. Wicklund, M. Cherney, D. J. Mellor, R. Wedemeyer, G. Rudolph, J. Jocksch, K. U. Pösnecker, B. Neumann, H. U. Martyn, Luis Labarga, M. Althoff, J. Thomas, J. Eisenmann, A. T. Wood, D. Notz, P. D. Dauncey, T. Tymieniecka, G. Kreutz, A. Shapira, U. Kötz, D. Su, W. Schütte, A. Ladage, Fernando Barreiro, D. A. Garbutt, Gy. Wolf, F. J. Kirschfink, M. Mermikides, D. Revel, E.E. Ronat, G. E. Forden, G. Knop, C. Jenkins, Rj Cashmore, T. Kracht, D. Lüke, S. Ritz, K. Gather, E. Ros, Boaz Klima, W. A. T. Wan Abdullan, D. Pandoulas, M. Hildebrandt, H. Kück, D.W. Schmitz, P. J. Dornan, R. Fohrmann, Hermann Kolanoski, and J. K. Sedgbeer
Subjects: Physics, Quantum chromodynamics, Particle physics, Annihilation, Physics and Astronomy (miscellaneous), Astrophysics::High Energy Astrophysical Phenomena, Electron–positron annihilation, Nuclear Theory, Quark model, Hadron, Elementary particle, Gluon, Nuclear physics, Color model, High Energy Physics::Experiment, Nuclear Experiment, Engineering (miscellaneous)
Abstract: Three-jet events produced by e+e- annihilation into hadrons at 34.6 GeV c.m. energy were studied by comparing them with 2nd order QCD and two different models of fragmentation. The distribution of low energy particles in the 3-jet plane is found to be better described by the LUND color string model than by the independent jet model. The opposite is true for more energetic particles flowing between the 3 jets. The average transverse momenta in jets can be described with values of σq between 350 and 500 MeV/c for the gluon jet. © 1985 Springer-Verlag.
Published: 2016

3. STRANGE MESON PRODUCTION IN E+E- ANNIHILATION

Author: Janusz Chwastowski, M. E. Veitch, B. Löhr, P. Joos, B. Foster, M. Takashima, D. H. Saxon, Eduardo Ros, R. J. Cashmore, Ian R Tomalin, P. Mättig, A. Leites, D. Muller, Fernando Barreiro, D. Strom, J. M. Pawlak, G. Poelz, A. Caldwell, John Hassard, A. Montag, J. Krüger, H. Hartmann, T. Kracht, J. Del Peso, D. Revel, K. Gather, G. Mikenberg, E. Hilger, D. Trines, A. Watson, R. Wedemeyer, D. Notz, H. M. Fischer, U. Karshon, Luis Hervas, D. Su, N. Wainer, Guenter Wolf, A. Ladage, A. J. Martin, Hermann Kolanoski, E. Lohrmann, J. Shulman, Georg Zobernig, Wolfram Dietrich Zeuner, K. U. Pösnecker, A. Shapira, A. Eskreys, L. Labarga, G. Yekutieli, Y. Eisenberg, R. Walczak, K. Genser, M. G. Bowler, W. Braunschweig, A. Jocksch, D. Lüke, S. Ritz, Philip Burrows, R. Gerhards, F. J. Kirschfink, M. Holder, H. Hultschig, John Hart, Sau Lan Wu, J. Fdez de Trocóniz, E.E. Ronat, G. Cases, Jens Hartmann, E. Bernardi, Stephanie Brandt, H. Kowalski, and H. U. Martyn
Subjects: Physics, Particle physics, Annihilation, Meson production, Physics and Astronomy (miscellaneous), Meson, Nuclear Theory, Multiplicity (mathematics), Sphericity, Nuclear physics, Rapidity, High Energy Physics::Experiment, Nuclear Experiment, Engineering (miscellaneous)
Abstract: The full TASSO data have been used to study the inclusive production of strange mesons in e+e- annihilations. Differential and total cross sections have been measured in the centre of mass energy range 14 to 44 GeV for K0, {Mathematical expression} and 34.5 to 44 GeV for K*± (892). We have investigated the strange meson production properties in jets by studying the rapidity and pt2 distributions as well as the evolution of the multiplicities as a function of the event sphericity. We find no evidence that the strange meson yields increase with increasing sphericity faster than the total charged multiplicity. © 1990 Springer-Verlag.
Published: 2016
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4. MEASUREMENT OF THE PHOTON STRUCTURE-FUNCTION F2-GAMMA AT Q2 FROM 7 TO 70 (GEV/C)2

Author: W. Wallraff, Philip Bull, C. Jenkins, Rj Cashmore, H. M. Fischer, H. Venkataramania, R. Wedemeyer, Wolfram Dietrich Zeuner, A. Ladage, K. U. Pösnecker, D. Strom, E. Hilger, S. Ritz, A. Montag, G. Baranko, M. Cherney, D. H. Saxon, A. Shapira, J. Thomas, P. J. Dornan, A. Eskreys, L. Labarga, A. Jocksch, P. Mättig, J. Krüger, R. Mir, Michael Dittmar, Georg Zobernig, Walter Dr. Hillen, D. M. Binnie, D. Trines, B. Bock, G. Yekutieli, Giora Mikenberg, H. Hartmann, T. Kracht, P. D. Dauncey, T. Tymieniecka, Fernando Barreiro, M. G. Bowler, Hermann Kolanoski, J. K. Sedgbeer, D. A. Garbutt, K. Gather, R. Gerhards, E. Ros, D. Revel, H. Kück, Boaz Klima, E.E. Ronat, B. Neumann, A. Caldwell, Stephen Lloyd, D. K. Hasell, V. Mertens, Gy. Wolf, Joseph Izen, D. Lueke, M. Takashima, G. P. Heath, G. E. Forden, Hl Krasemann, B. Löhr, U. Karshon, P. Joos, B. Foster, E. Wicklund, E. Lohrmann, D. J. Mellor, Y. Eisenberg, R. Walczak, R.C.E. Devenish, J. Eisenmann, W. Braunschweig, M. Althoff, D. Notz, P. Rosskamp, F. J. Kirschfink, M. Holder, H. Hultschig, John Hart, Sau Lan Wu, G. Poelz, Stephanie Brandt, H. Kowalski, H. U. Martyn, W. G. Jones, D. Su, W. A. T. Wan Abdullah, and E. Bernardi
Subjects: Quantum chromodynamics, Quark, Physics, Particle physics, Photon, Physics and Astronomy (miscellaneous), High Energy Physics::Phenomenology, Hadron, Parton, Electron, Lambda, Photon structure function, Nuclear physics, High Energy Physics::Experiment, Nuclear Experiment, Engineering (miscellaneous)
Abstract: We have measured the processe + e −→e + e −+hadrons, where one of the scattered electrons was detected at large angles, withQ 2 ranging from 7 to 70 (VeV/c)2. The photon structure functionF 2 γ (x, Q2) was determined at an averageQ 2 of 23 (GeV/c)2. The measurements were compared to theoretical predictions of the Quark Parton Model and Quantum Chromodynamics. In both models a hadronic part was added. Within the errors the data are in agreement with the QPM using quark masses of 300 MeV/c2 for the light quarks. The data also agree with a QCD calculation including higher order corrections. A fit yielded a $$\Lambda _{\overline {MS} } $$ value of 140 −65 +190 MeV, where the errors include statistical and systematic uncertainties.
Published: 2016

5. EVIDENCE FOR DIRECT PHOTONS FROM QUARKS IN ELECTRON-POSITRON ANNIHILATION

Author: A. J. Sephton, Y. Eisenberg, R. Walczak, G. E. Forden, B. Bock, W. Braunschweig, T. Kracht, K. U. Pösnecker, A. Shapira, D. Trines, W. Gerhardt, Janusz Chwastowski, J. F. Hassard, Giora Mikenberg, G. Tysarczyk, Stephanie Brandt, G. Yekutieli, Jens Hartmann, H. M. Fischer, A. J. Martin, I. R. Tomalin, Hermann Kolanoski, Fernando Barreiro, Wolfram Dietrich Zeuner, U. Karshon, H. Kowalski, A. Ladage, Georg Zobernig, E. Hilger, D. Su, M. E. Veitch, J. M. Pawlak, K. Gather, I. M. Silvester, P. Rehders, D. Muller, E. Lohrmann, P. Mättig, R. Wedemeyer, J. Shulman, E. Bernardi, H. U. Martyn, D. Revel, G. P. Heath, A. Montag, J. Del Peso, M. Takashima, Eduardo Ros, T. Tymieniecka, A. Eskreys, L. Labarga, Gy. Wolf, J. Krüger, H. Hartmann, Philip Burrows, D. Notz, D. Lüke, S. Ritz, B. Löhr, P. Joos, B. Foster, A. Leites, N. Wainer, D. H. Saxon, P. N. Ratoff, G. Poelz, K. Genser, M. G. Bowler, M. Holder, H. Hultschig, A. Jocksch, John Hart, Sau Lan Wu, R. Gerhards, F. J. Kirschfink, E.E. Ronat, C. Balkwill, and D. Strom
Subjects: Physics, Quark, Particle physics, Photon, Physics and Astronomy (miscellaneous), Astrophysics::High Energy Astrophysical Phenomena, media_common.quotation_subject, Electron–positron annihilation, Hadron, Bremsstrahlung, Jet (particle physics), Asymmetry, Nuclear physics, Positron, High Energy Physics::Experiment, Nuclear Experiment, Engineering (miscellaneous), media_common
Abstract: Hadronic events from e+e--annihilations with a high energy isolated photon have been investigated at C.M. energies between 14 GeV and 44 GeV. A forward-backward asymmetry Aγ of the positively charged jet with respect to the incident positron direction has been found:Aγγ=-0.32±0.07, providing evidence for photon bremsstrahlung from quarks. The forward-backward asymmetry of all hadronic events at C.M. energies between 30 GeV and 36 GeV has been measured. The value, corrected for the limited polar angle acceptance of the detector, is:A=+0.021±0.005. © 1988 Springer-Verlag.
Published: 2016

6. EVIDENCE FOR LOCAL COMPENSATION OF BARYON NUMBER IN E+E- ANNIHILATION

Author: Althoff, M., Braunschweig, W., Wallraff, W., Cherney, M., Izen, J. M., Mermikides, M., Rudolph, G., Strom, D., Takashima, M., Venkataramania, H., Wicklund, E., Wu, Sau Lan, Zobernig, G., Fischer, H. M., TASSO Collaboration, Hartmann, H., Jocksch, A., Knop, G., Köpke, L., Kolanoski, H., Kück, H., Mertens, V., Wedemeyer, R., Kirschfink, F. J., Wollstadt, M., Eisenberg, Y., Gather, K., Hultschig, H., Joos, P., Kötz, U., Kowalski, H., Ladage, A., Löhr, B., Lüke, D., Lübelsmeyer, K., Mättig, P., Mess, K. H., Notz, D., Nowak, R. J., Pyrlik, J., Riethmüller, R., Rushton, M., Schütte, W., Trines, D., Wolf, G., Martyn, H.-U., Xiao, Ch., Fohrmann, R., Hilger, E., Kracht, T., Krasemann, H. L., Leu, P., Lohrmann, E., Pandoulas, D., Poelz, G., Pösnecker, K. U., Rimkus, J., Schmüser, P., Wiik, B. H., Beuselinck, R., Binnie, D. M., Campbell, A. J., Dornan, P. J., Foster, B., Garbutt, D. A., Jenkins, C., Jones, T. D., Rosskamp, P., Jones, W. G., McCardle, J., Sedgbeer, J. K., Thomas, J., Wan Abdullah, W. A. T., Bell, K. W., Bowler, M. G., Bull, P., Cashmore, R. J., Clarke, P. E. L., Sander, H. G., Devenish, R., Grossmann, P., Hawkes, C. M., Lloyd, S. L., Salmon, G. L., Wyatt, T. R., Youngman, C., Forden, G. E., Hart, J. C., Harvey, J., Schmitz, D., Hasell, D. K., Proudfoot, J., Saxon, D. H., Woodworth, P. L., Barreiro, F., Dittmar, M., Holder, M., Kreutz, G., Neumann, B., Duchovni, E., Siebke, H., Karshon, U., Mikenberg, G., Mir, R., Revel, D., Ronat, E., Shapira, A., Yekutieli, G., Baranko, G., Barklow, T., and Caldwell, A.
Subjects: Physics, Nuclear and High Energy Physics, Particle physics, Range (particle radiation), Annihilation, Proton, Electron–positron annihilation, Hadron, Nuclear Theory, Nuclear physics, Momentum, Antiproton, Physics::Accelerator Physics, ddc:530, High Energy Physics::Experiment, Baryon number, Nuclear Experiment
Abstract: Physics letters / B 139(1-2), 126 - 132 (1984). doi:10.1016/0370-2693(84)90047-9, Published by North-Holland Publ., Amsterdam
Published: 2016
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7. COMPARISON OF INCLUSIVE FRACTIONAL MOMENTUM DISTRIBUTIONS OF QUARK AND GLUON JETS PRODUCED IN E+E- ANNIHILATION

Author: H. Hartmann, M. Holder, Eduardo Ros, R. J. Cashmore, John Hart, D. Notz, Sau Lan Wu, M. Takashima, U. Karshon, Fernando Barreiro, G. Yekutieli, D. Trines, H. Kowalski, Janusz Chwastowski, E. Hilger, E.E. Ronat, H. Hulschig, B. Bock, Y. Eisenberg, E. Lohrmann, D. Strom, T. Kracht, R. Walczak, W. Braunschweig, D. Revel, G. Poelz, K. Genser, Hermann Kolanoski, E. Bernardi, Guenter Wolf, John Hassard, K. U. Pösnecker, Stephanie Brandt, A. Montag, Philip Burrows, K. Gather, J. Del Peso, J. Shulman, G. Mikenberg, H. M. Fischer, R. Gerhards, A. Ladage, H. U. Martyn, Jens Hartmann, A. J. Martin, J. M. Pawlak, Georg Zobernig, F. J. Kirschfink, D. Su, G. P. Heath, R. Wedemeyer, Wolfram Dietrich Zeuner, A. Eskreys, M. E. Veitch, Ian R Tomalin, P. Mättig, D. Muller, D. Lüke, S. Ritz, B. Löhr, P. Joos, B. Foster, A. Leites, A. Shapira, N. Wainer, M. G. Bowler, A. Jocksch, D. H. Saxon, and J. Krüger
Subjects: Quark, Physics, Particle physics, Annihilation, Physics and Astronomy (miscellaneous), Astrophysics::High Energy Astrophysical Phenomena, High Energy Physics::Phenomenology, Hadron, Parton, Jet (particle physics), Charged particle, Gluon, Nuclear physics, Momentum, High Energy Physics::Experiment, Nuclear Experiment, Engineering (miscellaneous)
Abstract: Inclusive charged particle production ine + e − annihilation into hadrons is studied in terms of the particle fractional momentumx p . Thex p distribution for gluon jets is extracted by comparing two data samples measured in the TASSO detector: nearly symmetric three jet events at centre-of-mass energyW∼35 GeV and two jet events atW∼22 GeV, yielding quark and gluon jets of similar energies (∼11.5 GeV). No significant difference is observed between quark and gluon jets. Monte Carlo models based on parton showers describe the trend and energy variation of the data better than a model with second order matrix element in α s .
Published: 2016

8. Experimental study of the orientation of three-jet events ine + e ? annihilation at PETRA

Author: D. Strom, R. Gerhards, E. Lohrmann, G. Yekutieli, H. Kowalski, A. Leites, K. Genser, Philip Burrows, T. Kracht, E.E. Ronat, M. G. Bowler, J. Körner, Stephanie Brandt, Jens Hartmann, K. U. Pösnecker, K. Gather, A. Ladage, Guenter Wolf, Wolfram Dietrich Zeuner, B. Löhr, H. M. Fischer, H. U. Martyn, G. Mikenberg, E. Hilger, A. J. Martin, P. Joos, B. Foster, Y. Eisenberg, R. Walczak, A. Jocksch, J. M. Pawlak, W. Braunschweig, D. Su, Fernando Barreiro, M. E. Veitch, J. Krüger, A. Shapira, M. Holder, Eduardo Ros, H. Hartmann, D. Revel, R. J. Cashmore, G. Cases, D. Muller, R. Wedemeyer, H. Hultschig, N. Wainer, John Hart, D. Lüke, S. Ritz, A. Montag, Sau Lan Wu, E. Bernardi, Janusz Chwastowski, J. Del Peso, A. Watson, G. Poelz, D. Notz, D. H. Saxon, Ian R Tomalin, P. Mättig, F. J. Kirschfink, M. Takashima, D. Trines, Hermann Kolanoski, J. Shulman, A. Eskreys, L. Labarga, A. Caldwell, John Hassard, U. Karshon, Luis Hervas, and Georg Zobernig
Subjects: Quantum chromodynamics, Physics, Particle physics, Annihilation, Physics and Astronomy (miscellaneous), Hadron, Elementary particle, Jet (particle physics), Nuclear physics, Azimuth, High Energy Physics::Experiment, Polar coordinate system, Engineering (miscellaneous), Lepton
Abstract: The full TASSO data have been used to study the orientation of three-jet events ine+e− annihilation. The polar angle distributions of the normal to the three-jet plane as well as the polar angle distribution of the most energetic jet have been measured as a function of the thrust cut-off used to select the three-jet sample. The data corrected for radiation and detector effects are compared to QCD predictions and fair agreement is found. As a consistency check we also present measurements of the azimuthal correlations between the lepton and hadron planes. A significant azimuthal dependence is found, consistent again with the QCD predictions.
Published: 1990
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9. Production of charmed mesons in γγ interactions

Author: Ehud Duchovni, J. Pawlak, A. Eskreys, D. H. Saxon, Gy. Wolf, E. Ros, A. Ladage, E. Lohrmann, M. Holder, B. Bock, T. Kracht, H. Hultschig, R. Wedemeyer, R. Gerhards, John Hart, K. U. Pösnecker, Sau Lan Wu, G. Poelz, E. Bernardi, J. Krüger, K. Genser, R. Walczak, H. Hartmann, D. Lüke, S. Ritz, Y. Eisenberg, Stephanie Brandt, W. Braunschweig, U. Karshon, Jens Hartmann, H. U. Martyn, Wolfram Dietrich Zeuner, A. Montag, F. J. Kirschfink, E. Hilger, D. Su, E.E. Ronat, M. Takashima, A. Jocksch, J. Del Peso, D. Notz, Fernando Barreiro, D. Muller, D. Revel, D. Strom, B. Löhl, D. Trines, A. Leites, D. Hochman, H. Kowalski, P. Joos, B. Foster, N. Wainer, J. Chwastowski, J. F. Hassard, H. M. Fischer, A. J. Martin, L. Lyons, Hermann Kolanoski, Georg Zobernig, Ian R Tomalin, and J. Shulman
Subjects: Physics, Particle physics, Antiparticle, Physics and Astronomy (miscellaneous), Meson, Hadron, Nuclear Theory, High Energy Physics::Phenomenology, Elementary particle, Nuclear physics, Particle decay, Pair production, Pion, High Energy Physics::Experiment, Nuclear Experiment, Engineering (miscellaneous), Lepton
Abstract: Production of charmed mesons in γγ-interactions at PETRA energies has been observed in the TASSO detector. Cross sections for inclusive D*± and {Mathematical expression} production have been measured. Neutral and charged meson pairs are estimated to be produced with comparable cross sections, and their sum seems to account for a sizeable fraction of σtot(γγ→hadrons) near the {Mathematical expression} threshold. © 1990 Springer-Verlag.
Published: 1990

10. Observation of hard processes in collisions of two quasi-real photons

Author: Walter Dr. Hillen, G. Peise, A. Shapira, J. McCardle, D. Lüke, H. Kück, K. Gather, D. Trines, W. Schütte, G. Yekutieli, Fernando Barreiro, G. E. Forden, Giora Mikenberg, R. Beuselinck, W. Wallraff, Philip Bull, H. U. Martyn, D.W. Schmitz, Hermann Kolanoski, V. Mertens, Gl Salmon, J. K. Sedgbeer, R.C.E. Devenish, M. Wollstadt, W. G. Jones, P. J. Dornan, J. Harvey, M. Dittmar, D. Strom, D. Pandoulas, M. Rushton, K. Lübelsmeyer, R. Fohrmann, G. Rudolph, M. Mermikides, D. Revel, T. Kracht, P. L. Woodworth, R. Mir, C. Youngman, B. Löhr, Y. Eisenberg, H. Siebke, A. Ladage, P. Grossmann, W. Braunschweig, T. R. Wyatt, P. Joos, J. Rimkus, B. Foster, C. M. Hawkes, Norbert Wermes, P. Leu, E. Wicklund, H. Kowalsi, Jakita O. Thomas, H. Venkataramania, D. H. Saxon, C. Jenkins, Rj Cashmore, W. Koch, W. A. T. Wan Abdullah, M. G. Bowler, J. Pyrlik, M. Althoff, D. Notz, E. Hilger, D. M. Binnie, U. Kötz, L. Köpke, P. E. L. Clarke, M. Cherney, Ehud Duchovni, G. Poelz, A. Jocksch, K. W. Bell, P. Mättig, D. A. Garbutt, H. G. Sander, R. J. Nowak, H. Hartmann, J. Proudfoot, Ch. Xiao, T. Barklow, Alan Campbell, M. Holder, H. Hultschig, B. H. Wiik, John Hart, Sau Lan Wu, E.E. Ronat, G. Knop, P. Rosskamp, R. Wedemeyer, F. J. Kirschfink, H. M. Fischer, A. Caldwell, Stephen Lloyd, Georg Zobernig, D. K. Hasell, Joseph Izen, D. R. Quarrie, Gy. Wolf, B. Neumann, U. Karshon, E. Lohrmann, Tegid Jones, and Hl Krasemann
Subjects: Nuclear physics, Physics, Nuclear and High Energy Physics, Range (particle radiation), Particle physics, Photon, Angular distribution, Yield (chemistry), Hadron, High Energy Physics::Experiment, Electron, Nuclear Experiment, Term (time)
Abstract: Hard processes in photon-photon collisions are studied using high statistics data without requiring an electron tag. A high yield of hadrons with p t in the range 1.5–3.0 GeV/ c is observed. This yield exceeds the expectation of the Born term by a factor of four.
Published: 1984
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11. Jet fragmentation and QCD models ine + e − annihilation at c.m. energies between 12.0 and 41.5 GeV

Author: R. Walczak, I. M. Silvester, W. Braunschweig, Fernando Barreiro, F. J. Kirschfink, D. Revel, A. Montag, J. Del Peso, M. Holder, G. Yekutieli, H. Hultschig, John Hart, Sau Lan Wu, Jens Hartmann, J. F. Hassard, M. Takashima, U. Karshon, H. Kowalski, K. U. Pösnecker, A. Eskreys, G. Poelz, H. M. Fischer, L. Labarga, E.E. Ronat, B. Löhr, A. J. Martin, Rj Cashmore, C. Balkwill, Georg Zobernig, D. Su, Giora Mikenberg, J. M. Pawlak, P. Joos, B. Foster, A. Shapira, Gy. Wolf, D. Notz, A. Jocksch, A. Ladage, R. Wedemeyer, I. R. Tomalin, D. Strom, A. J. Sephton, J. Krüger, Stephanie Brandt, R. Gerhards, G. P. Heath, H. Hartmann, N. Wainer, E. Lohrmann, H. U. Martyn, B. Bock, A. Leites, D. Muller, E. Bernardi, T. Kracht, K. Genser, M. G. Bowler, Wolfram Dietrich Zeuner, Eduardo Ros, E. Hilger, D. H. Saxon, P. N. Ratoff, Janusz Chwastowski, K. Gather, G. E. Forden, M. E. Veitch, P. Mättig, J. Shulman, D. Trines, Hermann Kolanoski, D. Lüke, S. Ritz, Philip Burrows, and Y. Eisenberg
Subjects: Quantum chromodynamics, Physics, Particle physics, Annihilation, Physics and Astronomy (miscellaneous), Electron–positron annihilation, Hadron, Perturbative QCD, Observable, Nuclear physics, Fragmentation (mass spectrometry), High Energy Physics::Experiment, Nuclear Experiment, Engineering (miscellaneous)
Abstract: The large amount of data accumulated by the TASSO detector at 35 GeV c.m. energy has been compared with the predictions of the latest generation of perturbative QCD+fragmentation models. By adjustment of the arbitrary parameters of these models, a very good description of the global properties of hadronic events was obtained. No one model gave the best description of all features of the data, each model being better than the others for some observables and worse in other quantities. We interpret these results in terms of the underlying QCD and hadronisation schemes. The trends of the data across the energy range 12.0≦W≦41.5 GeV are generally well reproduced by the models with the parameters optimised at 35 GeV.
Published: 1988
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12. The production and decay of Tau leptons ine + e ? annihilation at PETRA energies

Author: J. McCardle, A. Caldwell, K. Gather, Stephen Lloyd, T. D. Jones, Y. Eisenberg, R. Beuselinck, P. Dauncey, W. Wallraff, Philip Bull, Malte Hildebrandt, D.W. Schmitz, W. Braunschweig, P. Rosskamp, J. Harvey, Ehud Duchovni, M. Holder, C. M. Hawkes, H. Hultschig, P. J. Dornan, A. J. Campbell, H. U. Martyn, R. Wedemeyer, G. Baranko, B. H. Wiik, John Hart, Sau Lan Wu, V. Mertens, C. Youngman, A. Ladage, R. Fohrmann, A. Eskreys, E. Lohrmann, Michael Dittmar, G. Yekutieli, D. Pandoulas, G. Poelz, M. Althoff, J. Eisenmann, P. Grossmann, B. Neumann, T. Tymieniecka, Gy. Wolf, D. Notz, K. U. Pösnecker, H. M. Fischer, U. Kötz, H. Venkataramania, D. A. Garbutt, W. G. Jones, U. Karshon, R. J. Nowak, P. Leu, D. H. Saxon, R.C.E. Devenish, J. Pyrlik, H. Kowalski, C. Jenkins, Rj Cashmore, F. J. Kirschfink, E. Hilger, G. Kreutz, A. Shapira, Hl Krasemann, E.E. Ronat, M. G. Bowler, G. Knop, H. Kück, H. Siebke, D. Lüke, S. Ritz, D. M. Binnie, P. L. Woodworth, K. Lübelsmeyer, H. Hartmann, D. Strom, M. Rushton, G. Rudolph, Ch. Xiao, A. Jocksch, Stephanie Brandt, Georg Zobernig, T. Kracht, M. Takashima, W. A. T. Wan Abdullah, P. E. L. Clarke, D. K. Hasell, Joseph Izen, G. E. Forden, G. Mikenberg, M. Cherney, J. Thomas, W. Schütte, Fernando Barreiro, K. W. Bell, P. Mättig, D. Trines, M. Mermikides, D. Revel, R. Mir, Hermann Kolanoski, J. K. Sedgbeer, B. Löhr, P. Joos, B. Foster, E. Wicklund, and D. J. Mellor
Subjects: Nuclear physics, Physics, Particle decay, Pair production, Pion, Annihilation, Physics and Astronomy (miscellaneous), Branching fraction, Electron–positron annihilation, Engineering (miscellaneous), Charged particle, Lepton
Abstract: We have observed τ pair production at average CM energies of 13.9, 22.3, 34.5 and 43.1 GeV. The cross-sections are consistent with QED, the cut off parameters beingΛ +>161 GeV andΛ −169 GeV (95% CL). The topological branching fraction of the τ to 1 charged particle,B 1, is 0.847±0.011 (stat) −0.013 +0.016 (syst) and no decays to 5 charged particles were observed resulting inB 5
Published: 1985
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13. Photon pair production bye + e ? annihilation and search for supersymmetric photinos at energies greater than 40 GeV

Author: J. Harvey, C. Youngman, W. Schütte, Fernando Barreiro, H. U. Martyn, H. Venkataramania, J. Pyrlik, E. Hilger, H. Siebke, W. G. Jones, G. Baranko, M. Mermikides, D. Revel, M. Winik, V. Mertens, Ehud Duchovni, H. Kück, D. M. Binnie, A. Jocksch, F. J. Kirschfink, G. Poelz, A. Eskreys, T. D. Jones, R. Rosskamp, M. Cherney, E.E. Ronat, H. M. Fischer, Stephanie Brandt, A. Ladage, W. A. T. Wan Abdullah, P. D. Dauncey, R.C.E. Devenish, J. Thomas, T. Tymieniecka, Michael Dittmar, G. Yekutieli, G. Knop, P. Grossmann, R. Wedemeyer, B. Neumann, A. Caldwell, D. Pandoulas, Stephen Lloyd, U. Kötz, J. McCardle, H. Kowalski, P. E. L. Clarke, Georg Zobernig, R. Mir, D. A. Garbutt, M. G. Bowler, K. Gather, M. Holder, H. Hultschig, D. H. Saxon, B. H. Wiik, R. Beuselinck, R. J. Nowak, John Hart, Sau Lan Wu, U. Karshon, T. Kracht, Giora Mikenberg, D. K. Hasell, E. Lohrmann, K. U. Pösnecker, C. Jenkins, Rj Cashmore, K. Lübelsmeyer, Gy. Wolf, J. Eisenmann, A. Shapira, Joseph Izen, Y. Eisenberg, Ch. Xiao, W. Braunschweig, G. E. Forden, Hl Krasemann, K. W. Bell, P. Mättig, C. M. Hawkes, D. Strom, D. Trines, M. Rushton, G. Rudolph, Hermann Kolanoski, J. K. Sedgbeer, G. Kreutz, D. Lüke, S. Ritz, H. Hartmann, D.W. Schmitz, M. Althoff, P. J. Dornan, D. Notz, R. Fohrmann, M. Takashima, B. Löhr, P. Joos, B. Foster, E. Wicklund, D. J. Mellor, P. Leu, W. Wallraff, and Philip Bull
Subjects: Physics, Nuclear physics, Cross section (physics), Particle physics, Selectron tube, Photon, Missing energy, Annihilation, Pair production, Physics and Astronomy (miscellaneous), High Energy Physics::Experiment, Engineering (miscellaneous), Photino
Abstract: The cross section for the processe + e −→γγ has been measured for c.m. energies 39.5 61 GeV and Λ+> GeV (95% confidence level) have been determined. A search for two photon final states with missing energy provided lower limits on the masses of the photino and selectron.
Published: 1984
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14. Inclusive electron production from heavy quarks in e+e− annihilation at 34.6 GeV center of mass energy

Author: Althoff, M., Braunschweig, W., Eisenmann, J., Strom, D., Takashima, M., Venkataramania, H., Wicklund, E., Wu, Sau Lan, Zobernig, G., TASSO Collaboration, Fischer, H. M., Hartmann, H., Jocksch, A., Knop, G., Köpke, L., Kolanoski, H., Kück, H., Mertens, V., Wedemeyer, R., Kirschfink, F. J., Eskreys, A., Gather, K., Hultschig, H., Joos, P., Kötz, U., Kowalski, H., Ladage, A., Löhr, B., Lüke, D., Mättig, P., Lübelsmeyer, K., Notz, D., Nowak, R. J., Pyrlik, J., Rushton, M., Schütte, W., Trines, D., Tymieniecka, T., Wolf, G., Yekutieli, G., Xiao, Ch., Martyn, H.-U., Fohrmann, R., Hilger, E., Kracht, T., Krasemann, H. L., Leu, P., Lohrmann, E., Pandoulas, D., Poelz, G., Pösnecker, K.-U., Wiik, B. H., Rosskamp, P., Beuselinck, R., Binnie, D. M., Dornan, P. J., Foster, B., Garbutt, D. A., Jenkins, C., Jones, T. D., Jones, W. G., McCardle, J., Sedgbeer, J. K., Sander, H. G., Thomas, J., Abdullah, W. A. T. Wan, Bell, K. W., 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, M., Izen, J. M., Mermikides, M., Ritz, S., and Rudolph, G.
Subjects: Quark, Physics, Nuclear and High Energy Physics, Particle physics, Annihilation, Electron–positron annihilation, Hadron, Bottom quark, Nuclear physics, ddc:530, Center of mass, Charm (quantum number), Lepton
Abstract: Physics letters / B 146(6), 443 - 449 (1984). doi:10.1016/0370-2693(84)90157-6, Published by North-Holland Publ., Amsterdam
Published: 1984
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15. Inclusive? 0 production bye + e ? annihilation at 34.6 GeV center of mass energy

Author: H. Kowalski, A. Jocksch, J. Krueger, W. G. Jones, G. Tysarczyk, G. Baranko, R. Mir, B. Löhr, E. Hilger, Greg P Heath, P. Joos, B. Foster, Philip Burrows, J. M. Yelton, D. Notz, P. N. Ratoff, A. Shapira, E. Wicklund, D. J. Mellor, H. U. Martyn, R. Wedemeyer, D. K. Hasell, S. L. Lloyd, M. G. Bowler, D. Strom, G. Poelz, P. J. Dornan, K. Gather, E. Ros, A. Montag, Joseph Izen, M. Cherney, E. Bernardi, A. Ladage, Boaz Klima, G. Mikenberg, R.C.E. Devenish, D. Trines, Paul Dauncey, H. Kück, M. Takashima, K. U. Poesnecker, G. E. Forden, C. Jenkins, A. P. Watson, Fernando Barreiro, Guenter Wolf, H. M. Fischer, A. J. Martin, W. Wallraff, D. H. Saxon, D. Su, N. Wainer, A. Caldwell, Hermann Kolanoski, J. K. Sedgbeer, Wolfram Dietrich Zeuner, E.E. Ronat, Georg Zobernig, H. Hartmann, D. Revel, R. Gerhards, D. Lüke, D. M. Binnie, S. Ritz, J. Shulman, R. J. Cashmore, T. Tymieniecka, Ian R Tomalin, P. Mättig, C. Balkwill, D. A. Garbutt, A. Eskreys, E. Vogel, L. Labarga, B. Bock, T. Kracht, P. Rosskamp, V. Mertens, M. Holder, H. Hultschig, John Hart, Sau Lan Wu, F. J. Kirschfink, B. Neumann, U. Karshon, Stephanie Brandt, G. Yekutieli, Y. Eisenberg, R. Walczak, W. Braunschweig, E. Lohrmann, J. Eisenmann, and Hl Krasemann
Subjects: Nuclear physics, Physics, Range (particle radiation), Cross section (physics), Particle physics, Annihilation, Physics and Astronomy (miscellaneous), Electron–positron annihilation, Production (computer science), Center of mass, Multiplicity (chemistry), Engineering (miscellaneous), Energy (signal processing)
Abstract: The cross section for the process e+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 form dσ/dΩ∼1+Acos2θ, with A=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 The form of the differential cross sections agrees within the errors. The mean π0 multiplicity is 5.8±0.9. © 1986 Springer-Verlag.
Published: 1986
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16. Upper limits on the production rate of the decuplet baryons Δ andΣ* ine + e − annihilation at 34.4 GeV

Author: H. Siebke, M. Winik, C. Youngman, H. M. Fischer, W. G. Jones, R. Riethmüller, H. Venkataramania, J. Pyrlik, H. Kowalski, E. Hilger, M. Takashima, Ehud Duchovni, R.C.E. Devenish, R. J. Cashmore, P. L. Woodworth, T. Tymieniecka, D. Trines, J. McCardle, E.E. Ronat, U. Kötz, H. U. Martyn, B. Löhr, M. G. Bowler, Stephanie Brandt, Philip Bull, D. A. Garbutt, A. Eskreys, R. J. Nowak, W. Wallraff, Hermann Kolanoski, J. K. Sedgbeer, P. Joos, K. Gather, J. Harvey, Georg Zobernig, G. Knop, D. Pandoulas, W. A. T. Wan Abdullah, T. Kracht, G. Mikenberg, H. Hartmann, R. Beuselinck, P. Schmüser, P. E. L. Clarke, C. Jenkins, E. Wicklund, Gy. Wolf, K. W. Bell, P. Mättig, U. Karshon, W. Scütte, A. Caldwell, V. Mertens, Stephen Lloyd, A. Jocksch, K. H. Mess, A. Ladage, G. Baranko, T. D. Jones, G. Poelz, M. Althoff, Ch. Xiao, D. K. Hasell, G. Kreutz, P. Rosskamp, D. Notz, P. J. Dorman, H. Kück, K. U. Pösnecker, B. Foster, D. M. Binnie, P. Grossmann, Joseph Izen, R. Wedemeyer, D. Strom, A. Shapira, K. Lübelsmeyer, M. Rushton, G. Rudolph, B. Neumann, F. J. Kirschfink, M. Holder, H. Hultschig, Michael Dittmar, B. H. Wiik, John Hart, G. Yekutieli, Sau Lan Wu, Y. Eisenberg, W. Braunschweig, C. M. Hawkes, Fernando Barreiro, E. Lohrmann, J. Eisenmann, Hl Krasemann, M. Mermikides, D. Revel, R. Mir, D. H. Saxon, L. Köpke, M. Cherney, P. Leu, J. Thomas, H. G. Sander, G. E. Forden, D. Lüke, S. Ritz, D.W. Schmitz, A. J. Campbell, and R. Fohrmann
Subjects: Physics, Nuclear physics, Baryon, Particle physics, Annihilation, Physics and Astronomy (miscellaneous), Octet, Electron–positron annihilation, Invariant mass, Strangeness, Spectral line, Production rate
Abstract: Samples of ∼1,900 identified protons and ∼500 Λ have been used to search for decuplet baryon production ine+e− annihilation at a c.m. energy of 34.4 GeV. Thep π+ and Λ π± invariant mass spectra contain no Δ orΣ* signals. Upper limits, at 95% confidence level, are that less than 12% of allp and less than 26% of all Λ come from the decay of doubly charged Δ and singly chargedΣ* states respectively. These limits correspond to production rates of
Published: 1984
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17. A measurement of theD s lifetime

Author: A. Montag, M. Takashima, M. Cherney, J. Del Peso, G. Yekutieli, P. D. Dauncey, T. Tymieniecka, D. Muller, F. J. Kirschfink, D. Strom, M. Holder, G. Baranko, H. Hultschig, John Hart, A. J. Sephton, Sau Lan Wu, R. Mir, E.E. Ronat, J. Shulman, C. Balkwill, A. Jocksch, R. Wedemeyer, K. U. Poesnecker, G. Poelz, J. M. Yelton, R. Gerhards, N. Wainer, D. Notz, A. Caldwell, K. Genser, Stephen Lloyd, V. Mertens, Fernando Barreiro, M. G. Bowler, A. Leites, A. Shapira, J. Krüger, J. Pawlak, D. Revel, E. Lohrmann, H. Hartmann, Y. Eisenberg, K. Gather, A. Eskreys, E. Ros, I. R. Tomalin, Wolfram Dietrich Zeuner, L. Labarga, Boaz Klima, W. Braunschweig, P. Mättig, J. Eisenmann, B. Löhr, A. Watson, E. Hilger, P. Joos, B. Foster, D. Trines, E. Wicklund, P. Rosskamp, D. J. Mellor, J. K. Sedgbeer, B. Bock, T. Kracht, A. Kolanoski, H. M. Fischer, A. J. Martin, G. P. Heath, Georg Zobernig, U. Karshon, B. Neumann, R. Walczak, D. K. Hasell, Joseph Izen, Gy. Wolf, D. H. Saxon, G. E. Forden, P. N. Ratoff, Rj Cashmore, Giora Mikenberg, A. Ladage, H. U. Martyn, E. Bernardi, Stephanie Brandt, D. Su, H. Kowalski, D. M. Binnie, Philip Burrows, D. Lüke, and S. Ritz
Subjects: Nuclear physics, Physics, Particle physics, Physics and Astronomy (miscellaneous), Meson, Electron–positron annihilation, Detector, Engineering (miscellaneous), Vertex (geometry)
Abstract: The lifetime of theD s meson has been measured using the TASSO detector at PETRA and found to be (5.7 −2.6 +3.6 ±0.9)×10−13 s. The method used was to reconstruct fully the decay vertex of the channelD s →ϕπ±, ϕ→K + K −.
Published: 1987
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18. Production and decay of charmed mesions ine + e ? annihilation at $$\sqrt s > 28$$

Author: U. Karshon, H. U. Martyn, D. Trines, Eduardo Ros, Jens Hartmann, Guenter Wolf, K. U. Pösnecker, K. Gather, D. Su, Hermann Kolanoski, E. Hilger, G. Mikenberg, K. Genser, M. G. Bowler, J. Shulman, H. M. Fischer, F. J. Kirschfink, D. Strom, H. Kowalski, A. J. Martin, M. Holder, A. Montag, H. Hultschig, B. Löhr, John Hart, Sau Lan Wu, J. Del Peso, Georg Zobernig, E. Bernardi, Janusz Chwastowski, P. Joos, A. Shapira, A. Ladage, J. M. Pawlak, Fernando Barreiro, B. Foster, R. S. Galik, E. Lohrmann, M. E. Veitch, Stephanie Brandt, G. Poelz, E.E. Ronat, T. Kracht, D. H. Saxon, R. Wedemeyer, Ian R Tomalin, P. Mättig, Philip Burrows, D. Revel, Wolfram Dietrich Zeuner, D. Muller, N. Wainer, A. Jocksch, D. Lüke, S. Ritz, G. E. Forden, A. Leites, R. Gerhards, A. Eskreys, A. Caldwell, John Hassard, J. Krüger, H. Hartmann, A. Watson, M. Takashima, D. Notz, G. Yekutieli, Y. Eisenberg, R. Walczak, and W. Braunschweig
Subjects: Physics, Quark, Particle physics, Annihilation, Physics and Astronomy (miscellaneous), Meson, Electron–positron annihilation, Charm quark, Nuclear physics, Pair production, High Energy Physics::Experiment, Production (computer science), Charm (quantum number), Engineering (miscellaneous)
Abstract: We report on a study of inclusive production ofD *± mesons ine + e − annihilation at c.m. energies between 28 and 46.8 GeV using the TASSO detector at the PETRA storage ring. A hardD *± energy spectrum is measured with a maximum nearE D *± ≃0.6E beam. The measured cross section ratio $$(\sigma _{D^{* + } } + \sigma _{D^{* - } } )/\sigma _{\mu \mu } = 1.28 \pm 0.09 \pm 0.18$$ indicates thatD * production accounts for a large fraction of the observed charm production. Two complementary methods have been used to determine the forward-backward asymmetry of charm pair production due to electroweak interference. Combining both measurements the product of the axial vector couplings of the electron and the charm quark to the weak neutral current was determined to beg A e g A c =−(0.276±0.073), in agreement with the standard model prediction of −0.25. Using a sample of reconstructedD *± mesons, the relative strength of the strong interaction coupling of thec quark compared to that of an average of all flavours is measured as αs(c)/αs(all)=0.91±0.38±0.15, consistent with the coupling constant being flavour independent. An update of ourD 0 lifetime measurement is presented, based on a considerable increase in statistics, the final result being $$\tau _{D^0 = } (4.8 \pm _{0.9 - 0.7}^{1.0 + 0.5} )10^{ - 13} s$$ .
Published: 1989
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19. Differential cross sections for in the CM energy range from 2.0 to 3.1 GeV

Author: Georg Zobernig, Gy. Wolf, M. Wollstadt, H. Siebke, R. J. Cashmore, Ehud Duchovni, U. Kötz, T. R. Wyatt, D. A. Garbutt, T. Kracht, Ch. Xiao, E. Lohrmann, Joseph Izen, D. R. Quarrie, H. Kück, D. M. Binnie, D. Pandoulas, M. Dittmar, Tegid Jones, D. Heyland, P. Leu, R. Wedemeyer, R.C.E. Devenish, H. Venkataramania, Gl Salmon, L. Köpke, M. Cherney, T. Barklow, Juergen Thomas, J. Pyrlik, U. Karshon, E. Hilger, D.W. Schmitz, A. Shapira, G. Yekutieli, Hl Krasemann, A. Jocksch, D. Strom, H. Kowalski, H. G. Sander, P. J. Dornan, A. J. Campbell, W. Schütte, Fernando Barreiro, W. Koch, Norbert Wermes, G. Poelz, W. G. Jones, A. Ladage, I. Al-Agil, R. Fohrmann, A. Caldwell, Stephen Lloyd, K. H. Mess, M. Rushton, M. Mermikides, D. Revel, H. U. Martyn, R. Mir, G. Rudolph, B. Neumann, P. Rosskamp, P. L. Woodworth, M. G. Bowler, D. Lüke, K. W. Bell, P. Mättig, J. Rimkus, C. Youngman, D. Trines, Walter Dr. Hillen, G. Peise, I. C. Brock, P. E. L. Clarke, W. Wallraff, Hermann Kolanoski, J. K. Sedgbeer, K. Lübelsmeyer, S. J. Cooper, Y. Eisenberg, W. Braunschweig, H. Hartmann, J. Proudfoot, M. Althoff, D. Notz, D. H. Saxon, J. McCardle, K. Gather, G. Mikenberg, R. Beuselinck, F. J. Kirschfink, E.E. Ronat, P. Grossmann, G. Knop, B. Löhr, P. Joos, M. Holder, B. Foster, H. Hultschig, B. H. Wiik, John Hart, E. Wicklund, Sau Lan Wu, J. Harvey, and H. M. Fischer
Subjects: Physics, Nuclear physics, Nuclear and High Energy Physics, Angular range, Range (particle radiation), Cross section (physics), Angular distribution, Scattering, High Energy Physics::Experiment, Atomic physics, Nuclear Experiment, Storage ring
Abstract: Exclusive production of proton-antiproton pairs by two photon scattering at CM energies between 2.0 GeV and 3.1 GeV has been measured with the TASSO detector at the e + e − storage ring PETRA. The angular distribution is flat within the accepted CM angular range | cos Θ ∗ |⩽0.7 . The integrated cross section (| cos Θ ∗ |⩽0.6) drops from about 4 nb at 2 GeV to less than 0.5 nb above 3 GeV. For the two-photon production of the η c (2984) and its subsequent decay into proton-antiproton the upper limit Γ(η c →γγ)· B (η c → p p ) keV (95% CL) is found.
Published: 1983
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20. Properties of charm jets produced in e+e− annihilation near 34 GeV

Author: Gl Salmon, M. Althoff, D. Notz, U. Karshon, R. J. Nowak, M. Wollstadt, T. D. Jones, D.W. Schmitz, W. Koch, P. Rosskamp, A. Ladage, G. Poelz, R. Wedemeyer, H. Hartmann, T. Kracht, T. Barklow, W. Braunschweig, H. Kück, H. U. Martyn, A. Shapira, P. Grossmann, H. Kowalski, Norbert Wermes, C. M. Hawkes, H. Venkataramania, R.C.E. Devenish, D. R. Quarrie, D. M. Binnie, R. Fohrmann, J. Proudfoot, P. L. Woodworth, U. Kötz, Gy. Wolf, Michael Dittmar, K. Gather, A. L. Campbell, G. Yekutieli, Rj Cashmore, E. Hilger, Giora Mikenberg, B. Neumann, W. G. Jones, W. A. T. Wan Abdullah, D. A. Garbutt, J. Thomas, J. Sedgbeer, F. J. Kirschfink, M. Holder, D. Lüke, P. E. L. Clarke, H. Hultschig, B. H. Wiik, John Hart, Sau Lan Wu, P. J. Dornan, C. Jenkins, D. Pandoulas, J. Rimkus, K. Lübelsmeyer, H. Siebke, E.E. Ronat, T. R. Wyatt, G. Knop, P. Leu, Ch. Xiao, R. Mir, G. E. Forden, W. Schütte, Fernando Barreiro, Y. Eisenberg, M. Mermikides, D. Revel, L. Köpke, M. Cherney, M. G. Bowler, H. G. Sander, A. Jocksch, C. Youngman, J. McCardle, A. Caldwell, Stephen Lloyd, Ehud Duchovni, D. Strom, M. Rushton, G. Rudolph, B. Löhr, Walter Dr. Hillen, G. Peise, H. M. Fischer, Georg Zobernig, D. K. Hasell, P. Mättig, Joseph Izen, P. Joos, B. Foster, E. Wicklund, D. Trines, W. Wallraff, Philip Bull, J. Harvey, R. Beuselinck, K. W. Bell, D. H. Saxon, J. Pyrlik, Hermann Kolanoski, Hl Krasemann, and E. Lohrmann
Subjects: Quark, Physics, Nuclear and High Energy Physics, Particle physics, Annihilation, Meson, Astrophysics::High Energy Astrophysical Phenomena, Electron–positron annihilation, High Energy Physics::Phenomenology, Hadron, Elementary particle, Charged particle, Nuclear physics, High Energy Physics::Experiment, Nuclear Experiment, Boson
Abstract: D ∗± production via e + e − → D ∗± X was studied at CM energies near 34 GeV. The charged particles produced in the hemisphere opposite to that of the D ∗ were used to investigate the fragmentation of charm jets. All spectra studied show a close similarity between the charm jet and the average jet obtained by summing over all quark flavours. The spectra of particles produced in the D ∗ hemisphere were used to study separately first rank and higher rank fragmentation.
Published: 1984
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21. A study of jets fromb quarks produced ine + e − annihilations at $$\sqrt s = 35 - 46$$ GeV

Author: Guenter Wolf, A. Jocksch, B. Bock, J. Krüger, D. Lüke, H. M. Fischer, S. Ritz, H. Hartmann, G. Yekutieli, U. Karshon, A. T. Belk, N. Wainer, T. Kracht, Jens Hartmann, W. Schütte, A. J. Martin, Fernando Barreiro, P. N. Ratoff, K. Gather, J. M. Yelton, K. U. Pösnecker, D. Notz, G. Mikenberg, S. L. Lloyd, A. Ladage, R. Gerhards, D. Su, A. Leites, D. H. Saxon, Georg Zobernig, H. Kowalski, G. Poelz, M. Takashima, A. Shapira, A. Eskreys, L. Labarga, E. Bernardi, Wolfram Dietrich Zeuner, Janusz Chwastowski, D. Revel, E. Hilger, K. Genser, J. M. Pawlak, M. G. Bowler, B. Löhr, E. Lohrmann, P. Joos, A. Montag, B. Foster, G. E. Forden, J. Del Peso, Y. Eisenberg, I. M. Silvester, R. Wedemeyer, R. Walczak, Philip Burrows, Eduardo Ros, R. J. Cashmore, G. P. Heath, W. Braunschweig, John Hassard, D. M. Binnie, Stephanie Brandt, H. U. Martyn, D. Strom, M. E. Veitch, A. J. Sephton, F. J. Kirschfink, E.E. Ronat, C. Balkwill, M. Holder, P. Mättig, H. Hultschig, John Hart, Sau Lan Wu, J. Shulman, I. R. Tomalin, D. Trines, Hermann Kolanoski, and D. Muller
Subjects: Quark, Physics, Particle physics, Physics and Astronomy (miscellaneous), Electron–positron annihilation, High Energy Physics::Phenomenology, Hadron, Monte Carlo method, Strong interaction, Relative strength, Nuclear physics, High Energy Physics::Experiment, Rapidity, Multiplicity (chemistry), Nuclear Experiment, Engineering (miscellaneous)
Abstract: Ab enrichment technique using the longB lifetime has been developed, by which ∼600 hadronic events with >65%b purity are obtained. The properties of the associated jets are studied, with comparisons made between them and those in hadronic data in whichb quarks make up only 10% of the total, and jets in Monte Carlo events. The distributions in rapidity and multiplicity yield two new determinations of the fragmentation variablez forb hadrons and confirm that theb fragmentation function is hard. We also present the first measurement of the relative strength of the strong interaction coupling of theb quark compared with the average of all flavours.
Published: 1989
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22. Determination of α s in first and second order QCD frome + e − annihilation into hadrons

Author: E.E. Ronat, V. Mertens, G. Knop, D.W. Schmitz, H. Venkataramania, B. Neumann, P. J. Dornan, M. Holder, H. Hultschig, E. Hilger, B. H. Wiik, R. Mir, C. Youngman, R. Fohrmann, John Hart, Sau Lan Wu, W. Wallraff, Philip Bull, E. Lohrmann, C. Jenkins, Rj Cashmore, J. Harvey, R. Wedemeyer, Ehud Duchovni, G. E. Forden, G. Baranko, K. U. Pösnecker, D. Strom, A. Ladage, J. Eisenmann, D. Lüke, P. Rosskamp, W. Schütte, Fernando Barreiro, T. Barklow, T. D. Jones, U. Karshon, M. Takashima, R. J. Nowak, D. H. Saxon, M. Rushton, A. Eskreys, G. Rudolph, D. Pandoulas, H. U. Martyn, B. Löhr, F. J. Kirschfink, A. Shapira, P. Joos, U. Kötz, P. Grossmann, H. Siebke, D. A. Garbutt, E. Wicklund, M. G. Bowler, J. Pyrlik, J. McCardle, M. Winik, H. Kowalski, M. Mermikides, D. Revel, T. Kracht, Giora Mikenberg, P. Leu, D. K. Hasell, K. J. Sedgbeer, Hl Krasemann, P. Mättig, Hermann Kolanoski, R. Beuselinck, M. Althoff, D. Notz, L. Köpke, B. Foster, D. M. Binnie, M. Cherney, Gy. Wolf, Stephanie Brandt, A. Caldwell, J. Thomas, A. Jocksch, G. Yekutieli, K. W. Bell, H. G. Sander, Joseph Izen, Stephen Lloyd, Ch. Xiao, H. M. Fischer, H. Hartmann, G. Kreutz, D. Trines, Michael Dittmar, K. Gather, Georg Zobernig, H. Kück, Y. Eisenberg, W. Braunschweig, C. M. Hawkes, T. Tymieniecka, K. Lübelsmeyer, W. G. Jones, W. A. T. Wan Abdullah, P. E. L. Clarke, R.C.E. Devenish, and G. Poelz
Subjects: Quantum chromodynamics, Physics, Particle physics, Annihilation, Physics and Astronomy (miscellaneous), Electron–positron annihilation, media_common.quotation_subject, Hadron, Asymmetry, Spectral line, Gluon, Nuclear physics, Bibliography, High Energy Physics::Experiment, media_common
Abstract: Multihadron events produced bye+e− annihilation at a c.m. energy of 34.6 GeV have been used to determine αs. The predictions of 1 st and 2nd order QCD models with independent jet and string fragmentation have been compared to a large variety of kinematic variables such as event shapes, transverse momentum spectra, jet masses, 3-cluster thrust and the asymmetry of energy-energy correlations. The value of αs has been found to depend on the variables used, on the fragmentation model and on the treatment of soft gluons in the 2nd order QCD calculation. Within the models considered αs has been found in complete 2nd order QCD to lie between 0.12 and 0.23.
Published: 1984
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23. Determination of the average lifetime of bottom hadrons

Author: B. Löhr, P. Joos, B. Foster, W. Schütte, Fernando Barreiro, H. Siebke, M. Takashima, E. Wicklund, Y. Eisenberg, Malte Hildebrandt, D. Strom, D. J. Mellor, W. Braunschweig, K. W. Bell, P. Mättig, C. M. Hawkes, Gy. Wolf, Ehud Duchovni, D. Trines, G. Baranko, M. Rushton, G. Poelz, M. Mermikides, D. Revel, C. Jenkins, Rj Cashmore, D. K. Hasell, G. Rudolph, P. Leu, A. Eskreys, R. Mir, A. Ladage, D. H. Saxon, M. G. Bowler, H. Hartmann, Hermann Kolanoski, J. K. Sedgbeer, H. Venkataramania, R.C.E. Devenish, U. Karshon, P. Rosskamp, D.W. Schmitz, T. D. Jones, J. Pyrlik, G. Yekutieli, P. J. Dornan, A. J. Campbell, E. Hilger, R. Fohrmann, M. Althoff, A. Jocksch, P. Grossmann, D. Notz, M. Cherney, Joseph Izen, T. Kracht, G. E. Forden, A. Caldwell, J. Thomas, G. Kreutz, J. McCardle, H. M. Fischer, Wolfram Dietrich Zeuner, D. Lüke, Stephen Lloyd, S. Ritz, K. Gather, T. Tymieniecka, D. Pandoulas, U. Kötz, V. Mertens, Giora Mikenberg, R. Beuselinck, D. A. Garbutt, C. Youngman, R. J. Nowak, P. Dauncey, Georg Zobernig, B. Neumann, R. Wedemeyer, W. Wallraff, Philip Bull, H. Kück, H. U. Martyn, J. Harvey, K. U. Pösnecker, E.E. Ronat, G. Knop, A. Shapira, M. Dittmar, M. Holder, H. Hultschig, John Hart, Sau Lan Wu, E. Lohrmann, J. Eisenmann, F. J. Kirschfink, S. Brandt, H. Kowalski, Hl Krasemann, D. M. Binnie, W. G. Jones, W. A. T. Wan Abdullah, and P. E. L. Clarke
Subjects: Nuclear physics, Physics, Quark, Semileptonic decay, Nuclear and High Energy Physics, Particle physics, Annihilation, Electron–positron annihilation, High Energy Physics::Phenomenology, Hadron, High Energy Physics::Experiment
Abstract: We have determined the average lifetime of hadrons containing b quarks produced in e+e− annihilation to be τ B = 1.83 +0.83 +0.37 − −0.34 ×10 −12 s . Our method uses charged decay products from both non-leptonic and semileptonic decay modes.
Published: 1984
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24. Observation of production in e+e− anihilation

Author: W. G. Jones, Ehud Duchovni, H. Venkataramania, B. Löhr, C. Youngman, D. Trines, P. Joos, F. J. Kirschfink, B. Foster, P. L. Woodworth, J. Harvey, J. Pyrlik, E. Wicklund, Gl Salmon, E. Hilger, W. Schütte, Fernando Barreiro, W. Wallraff, C. Jenkins, I. C. Brock, M. G. Bowler, M. Holder, H. Hultschig, Hermann Kolanoski, J. K. Sedgbeer, D. Strom, Joseph Izen, D. Lüke, A. Jocksch, J. Rimkus, M. Rushton, B. H. Wiik, John Hart, A. Ladage, D. M. Binnie, Y. Eisenberg, D. R. Quarrie, M. Dittmar, W. Braunschweig, M. Althoff, D. Notz, H. M. Fischer, G. Rudolph, Sau Lan Wu, R. Wedemeyer, E. Lohrmann, P. Grossmann, Georg Zobernig, J. McCardle, K. Gather, D. Pandoulas, Ch. Xiao, M. Mermikides, D. Revel, G. Mikenberg, R. Beuselinck, P. Rosskamp, W. Koch, R. Mir, B. Neumann, R. J. Cashmore, Gy. Wolf, T. Barklow, Tegid Jones, G. Poelz, U. Kötz, M. Wollstadt, Norbert Wermes, P. Leu, G. Yekutieli, E.E. Ronat, A. Caldwell, Stephen Lloyd, R.C.E. Devenish, H. Siebke, D. A. Garbutt, K. H. Mess, T. R. Wyatt, G. Knop, H. Hartmann, K. W. Bell, P. Mättig, D.W. Schmitz, A. Shapira, P. J. Dornan, Hl Krasemann, A. J. Campbell, J. Proudfoot, T. Kracht, L. Köpke, R. Fohrmann, M. Cherney, Walter Dr. Hillen, G. Peise, H. G. Sander, U. Karshon, K. Lübelsmeyer, D. H. Saxon, D. Heyland, Juergen Thomas, H. Kowalski, W. A. T. Wan Abdullah, P. E. L. Clarke, H. Kück, and H. U. Martyn
Subjects: Nuclear physics, Physics, Nuclear and High Energy Physics, Annihilation, Electron–positron annihilation, Hadron, Event (particle physics)
Abstract: We present evidence for the production of Ξ· − , Ξ − in e+e− annihilation into hadrons. Our measurements yields: 0.026 ± 0.008 (stat.) ± 0.009 (syst.) Ξ − , Ξ − per hadronic event at W ∼ 34 GeV. Using our previous measurements of Λ, Λ and p, p production we obtain the relative yields (Ξ − , Ξ − /(Λ, Λ = 0.087 ± 0.03 ( stat. ) ± 0.03 ( syst. ) and (Ξ − , Ξ − /( p , p = 0.033 ± 0.011 ( stat. ) ± 0.011 ( syst. ) .
Published: 1983
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25. Study of intermittency in electron-positron annihilation into hadrons

Author: J. Krüger, H. Hartmann, A. Ladage, H. U. Martyn, D. Trines, U. Karshon, J. M. Pawlak, R. Gerhards, Janusz Chwastowski, Y. Eisenberg, R. Wedemeyer, D. Notz, G. P. Heath, D. Muller, N. Wainer, R. Walczak, E. Lohrmann, J. F. Hassard, A. Jocksch, H. M. Fischer, W. Braunschweig, K. U. Pösnecker, A. Leites, Jens Hartmann, Philip Burrows, M. Takashima, G. Poelz, Giora Mikenberg, A. Montag, Georg Zobernig, A. Shapira, D. Su, G. Yekutieli, J. Del Peso, T. Kracht, D. M. Binnie, E. Bernardi, K. Genser, Fernando Barreiro, D. H. Saxon, D. Lüke, S. Ritz, B. Löhr, P. Joos, B. Foster, D. Revel, A. Eskreys, A. J. Martin, A. Caldwell, Gy. Wolf, Hermann Kolanoski, J. Shulman, M. E. Veitch, H. Kowalski, Ian R Tomalin, Stephanie Brandt, E.E. Ronat, F. J. Kirschfink, M. Holder, H. Hultschig, John Hart, Sau Lan Wu, Eduardo Ros, E. Hilger, and Wolfram Dietrich Zeuner
Subjects: Physics, Nuclear and High Energy Physics, Particle physics, Annihilation, Electron–positron annihilation, Hadron, Elementary particle, Sphericity, law.invention, Nuclear physics, Azimuth, law, Intermittency, High Energy Physics::Experiment, Rapidity, Nuclear Experiment
Abstract: Intermittency effects have been studied directly for the first time in e + e − annihilation, using 37 509 hadronic events at an average CM energy of 〈√ s 〉=35 GeV. The factorial moments F 2 , F 3 and F 4 are given for the rapidity distribution and for the two-dimensional distributions in rapidity and azimuthal angle. The effects of cuts in sphericity and particle momentum are large. Comparison with several fragmentation models are made; some models like the Lund model with O(α s 2 ) matrix element give a qualitative description of the phenomena. The importance of detector effects is demonstrated. The results are discussed in terms of various suggested interpretations of this effect.
Published: 1989
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26. A measurement of muon pair production ine + e ? annihilation at centre of mass energies 35.0? $$\sqrt s $$ ?46.8 GeV

Author: Janusz Chwastowski, Philip Burrows, M. E. Veitch, B. Bock, T. Kracht, I. R. Tomalin, P. Mättig, D. Strom, A. J. Sephton, H. M. Fischer, M. Takashima, Wolfram Dietrich Zeuner, Guenter Wolf, E. Hilger, D. Trines, K. Gather, J. M. Pawlak, A. J. Martin, E. Bernardi, G. Mikenberg, A. Leites, A. Ladage, A. Montag, K. U. Pösnecker, J. Krüger, J. Del Peso, P. N. Ratoff, K. Genser, D. Muller, Hermann Kolanoski, M. G. Bowler, H. Hartmann, D. Lüke, S. Ritz, A. N. Wainer, R. Wedemeyer, J. Shulman, Jens Hartmann, R. Gerhards, D. H. Saxon, B. Löhr, Georg Zobernig, Ehud Duchovni, A. Jocksch, Eduardo Ros, R. J. Cashmore, D. Notz, P. Joos, D. Su, B. Foster, M. Traseira, Fernando Barreiro, A. Eskreys, D. Revel, L. Labarga, G. E. Forden, I. M. Silvester, John Hassard, Y. Eisenberg, R. Walczak, W. Braunschweig, C. M. Hawkes, U. Karshon, Luis Hervas, F. J. Kirschfink, M. Holder, H. Hultschig, G. Yekutieli, John Hart, Sau Lan Wu, E. Lohrmann, E.E. Ronat, C. Balkwill, G. P. Heath, G. Poelz, Stephanie Brandt, H. Kowalski, and H. U. Martyn
Subjects: Physics, Particle physics, Muon, Annihilation, Physics and Astronomy (miscellaneous), media_common.quotation_subject, Electron–positron annihilation, Electroweak interaction, Weinberg angle, Asymmetry, Standard Model, Nuclear physics, Pair production, Engineering (miscellaneous), media_common
Abstract: The reactione+e−→µ+µ− has been studied at centre of mass energies between 35.0 and 46.8 GeV using the TASSO detector at PETRA. We present measurements of the forward-backward charge asymmetry (Aμμ) and cross section σμμ for this reaction at three energies. At 35.0 GeV we obtain a cross section relative to the QED prediction ofRμμ=σμμ/σo=0.932±0.018±0.044 andAμμ=(−10.6−2.3+2.2±0.5)%. At 38.3 GeV we findRμμ=0.951±0.072−0.057+0.063 andAμμ=(+1.7−8.6+8.5±0.5)%. At 43.6 GeV we measureRμμ=0.921±0.037±0.055 andAμμ=(−17.6−4.3+4.4±0.5)%. Our results are in good agreement with the predictions of the standard model. Including previous TASSO data we present improved determinations of muonic electroweak parameters. We also report on lower limits of possible contributions from contact interactions.
Published: 1988
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27. Measurement of R and search for the top quark in e+e− annihilation between 39.8 and 45.2 GeV

Author: Althoff, M., Braunschweig, W., Siebke, H., Mermikides, M., Rudolph, G., Strom, D., Takashima, M., Venkataramania, H., Wicklund, E., Wu, Sau Lan, Zobernig, G., TASSO Collaboration, Wallraff, W., Fischer, H. M., Hartmann, H., Hillen, W., Jocksch, A., Knop, G., Köpke, L., Kolanoski, H., Kück, H., Kirschfink, F. J., Mertens, V., Wedemeyer, R., Wollstadt, M., Eisenberg, Y., Gather, K., Hultschig, H., Joos, P., Kötz, U., Kowalski, H., Ladage, A., Lübelsmeyer, K., Löhr, B., Lüke, D., Mättig, P., Notz, D., Nowak, R. J., Pyrlik, J., Rushton, M., Schütte, W., Trines, D., Wolf, G., Martyn, H.-U., Xiao, Ch., Fohrmann, R., Hilger, E., Kracht, T., Krasemann, H. L., Leu, P., Lohrmann, E., Pandoulas, D., Poelz, G., Pösnecker, K. U., Peise, G., Wiik, B. H., Beuselinck, R., Binnie, D. M., Campbell, A. J., Dornan, P. J., Foster, B., Garbutt, D. A., Jenkins, C., Jones, T. D., Jones, W. G., Rimkus, J., McCardle, J., Sedgbeer, J. K., Thomas, J., Wan Abdullah, W. A. T., Bell, K. W., Bowler, M. G., Bull, P., Cashmore, R. J., Clarke, P. E. L., Devenish, R., Rosskamp, P., Grossmann, P., Hawkes, C. M., Lloyd, S. L., Salmon, G. L., Wyatt, T. R., Youngman, C., Forden, G. E., Hart, J. C., Harvey, J., Hasell, D. K., Sander, H. G., Proudfoot, J., Saxon, D. H., Barreiro, F., Dittmar, M., Holder, M., Kreutz, G., Neumann, B., Duchovni, E., Karshon, U., Mikenberg, G., Schmitz, D., Mir, R., Revel, D., Ronat, E., Shapira, A., Yekutieli, G., Baranko, G., Barklow, T., Caldwell, A., Cherney, M., and Izen, J. M.
Subjects: Quantum chromodynamics, Quark, Physics, Nuclear and High Energy Physics, Top quark, Particle physics, Annihilation, High Energy Physics::Lattice, Electron–positron annihilation, High Energy Physics::Phenomenology, Hadron, Electroweak interaction, Elementary particle, Nuclear physics, ddc:530, High Energy Physics::Experiment, Nuclear Experiment
Abstract: Physics letters / B 138(5-6), 441 - 448 (1984). doi:10.1016/0370-2693(84)91936-1, Published by North-Holland Publ., Amsterdam
Published: 1984
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28. A detailed study of strange particle production ine + e − annihilation at high energy

Author: G. Yekutieli, Ch. Xiao, Michael Dittmar, K. Gather, W. Wallraff, Philip Bull, Giora Mikenberg, W. Schütte, P. Dauncey, Stephanie Brandt, K. Lübelsmeyer, Y. Eisenberg, Ehud Duchovni, Fernando Barreiro, Hermann Kolanoski, J. K. Sedgbeer, J. Harvey, M. Althoff, E. Ronat, D. K. Hasell, W. Braunschweig, P. Mättig, J. McCardle, H. U. Martyn, D. Notz, V. Mertens, A. Eskreys, C. M. Hawkes, R. Wedemeyer, W. G. Jones, U. Kötz, Joseph Izen, H. M. Fischer, D. A. Garbutt, K. U. Pösnecker, D. H. Saxon, R. Beuselinck, P. L. Woodworth, Georg Zobernig, A. Ladage, D. M. Binnie, W. A. T. Wan Abdullah, A. Caldwell, G. Baranko, H. Hartmann, G. Knop, A. Shapira, Stephen Lloyd, G. Poelz, M. Mermikides, D. Revel, D. Strom, P. Grossmann, G. E. Forden, M. Rushton, R.C.E. Devenish, G. Rudolph, B. Löhr, Hl Krasemann, F. J. Kirschfink, K. W. Bell, U. Karshon, R. J. Nowak, M. Holder, M. Takashima, H. Hultschig, H. Venkataramania, B. H. Wiik, John Hart, E. Lohrmann, Sau Lan Wu, P. Leu, M. Cherney, J. Eisenmann, P. Joos, B. Foster, E. Wicklund, D. J. Mellor, J. Thomas, T. D. Jones, E. Hilger, R. Mir, H. Siebke, H. Kowalski, D. Pandoulas, D. Lüke, S. Ritz, C. Jenkins, B. Neumann, Rj Cashmore, J. Pyrlik, M. G. Bowler, D.W. Schmitz, C. Youngman, P. J. Dornan, A. J. Campbell, R. Fohrmann, P. Rosskamp, M. Hildebrandt, Gy. Wolf, A. Joksch, T. Kracht, H. Kück, P. E. L. Clarke, T. Tymieniecka, G. Kreutz, and D. Trines
Subjects: Baryon, Nuclear physics, Physics, Strange quark, Particle physics, Annihilation, Physics and Astronomy (miscellaneous), Electron–positron annihilation, Rapidity, Lambda, Engineering (miscellaneous), Scaling, Charged particle
Abstract: 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: 1985
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29. Observation of F meson production in high energy e+e− annihilation

Author: W. Schütte, D. K. Hasell, Fernando Barreiro, P. Mättig, Y. Eisenberg, M. Mermikides, D. Revel, Joseph Izen, C. Youngman, J. McCardle, Rj Cashmore, R. Mir, M. Holder, H. Hultschig, T. Barklow, H. M. Fischer, H. Kück, Georg Zobernig, B. H. Wiik, T. D. Jones, John Hart, V. Mertens, L. Köpke, H. Hartmann, M. Cherney, A. Jocksch, D. R. Quarrie, Sau Lan Wu, H. G. Sander, P. J. Dornan, H. Kowalski, G. Baranko, Ch. Xiao, W. Wallraff, Philip Bull, H. U. Martyn, J. Thomas, J. Harvey, J. Proudfoot, W. A. T. Wan Abdullah, D. M. Binnie, M. G. Bowler, R. Wedemeyer, D.W. Schmitz, D. H. Saxon, C. Jenkins, M. Althoff, D. Notz, Giora Mikenberg, E.E. Ronat, R. Beuselinck, M. Wollstadt, G. Knop, Gl Salmon, Walter Dr. Hillen, P. Grossmann, G. E. Forden, P. E. L. Clarke, G. Peise, P. Joos, U. Kötz, B. Foster, Hermann Kolanoski, W. Koch, T. Kracht, A. J. Campbell, D. A. Garbutt, W. G. Jones, E. Wicklund, A. Ladage, F. J. Kirschfink, G. Poelz, R. Fohrmann, D. Trines, K. W. Bell, R.C.E. Devenish, D. Strom, Gy. Wolf, M. Rushton, P. Leu, G. Rudolph, P. L. Woodworth, B. Löhr, Hl Krasemann, J. Rimkus, D. Lüke, H. Venkataramania, E. Hilger, P. Rosskamp, D. Pandoulas, J. Pyrlik, H. Siebke, T. R. Wyatt, J. Sedgbeer, Norbert Wermes, E. Lohrmann, A. Shapira, Michael Dittmar, K. Gather, G. Yekutieli, A. Caldwell, Stephen Lloyd, K. Lübelsmeyer, Ehud Duchovni, W. Braunschweig, C. M. Hawkes, U. Karshon, R. J. Nowak, and B. Neumann
Subjects: Physics, Nuclear physics, Nuclear and High Energy Physics, High energy, Meson production, Pair production, Annihilation, Meson, Branching fraction, Electron–positron annihilation, Yield (chemistry)
Abstract: Production of the F meson by e + e − annihilation at high energies has been obsrved in the ϕπ final state with a mass of 1.975 ± 0.009 ± 0.010 GeV and a width consistent with the mass resolution. The yield of F production times branching ratio relative to μ pair production is R F ( x ⩾ 0.3) B (F ± → ϕπ ± ) = 0.061 ± 0.012 ± 0.018.
Published: 1984
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30. A measurement of theD 0 lifetime

Author: J. Krüger, H. Hartmann, H. U. Martyn, Giora Mikenberg, K. Gather, E. Ros, A. Montag, B. Bock, A. Caldwell, Stephen Lloyd, M. Cherney, Boaz Klima, T. Kracht, A. Ladage, J. Thomas, J. Messersmith, V. Mertens, E. Hilger, U. Karshon, C. Jenkins, Rj Cashmore, R. Mir, W. G. Jones, G. Yekutieli, F. J. Kirschfink, P. Dauncey, D. M. Binnie, J. M. Yelton, M. Althoff, M. Holder, David DeMille, A. Eskreys, D. Notz, L. Labarga, H. Hultschig, G. Baranko, John Hart, T. Tymieniecka, Sau Lan Wu, B. Neumann, A. Jocksch, Stephanie Brandt, D. Strom, G. E. Forden, W. Schütte, Fernando Barreiro, D. A. Garbutt, Y. Eisenberg, E.E. Ronat, R. Walczak, W. Braunschweig, Gy. Wolf, P. Rosskamp, P. J. Dornan, R. Wedemeyer, D. Su, M. Takashima, H. Kowalski, K. U. Pösnecker, W. A. T. Wan Abdullah, D. Revel, R. Gerhards, E. Bernardi, A. Shapira, M. G. Bowler, D. Lüke, S. Ritz, Wolfram Dietrich Zeuner, R.C.E. Devenish, B. Löhr, P. Joos, G. Poelz, B. Foster, D. H. Saxon, D. Trines, E. Wicklund, D. J. Mellor, Hermann Kolanoski, J. K. Sedgbeer, P. Mättig, P. N. Ratoff, W. Wallraff, Philip Bull, D. K. Hasell, Joseph Izen, H. M. Fischer, E. Lohrmann, J. Eisenmann, Georg Zobernig, G. P. Heath, and Hl Krasemann
Subjects: Particle acceleration, Physics, Nuclear physics, Particle physics, Mass energy, Physics and Astronomy (miscellaneous), Meson, Electron–positron annihilation, Mass spectrum, Elementary particle, Center of mass, Engineering (miscellaneous)
Abstract: We have determined the D0 lifetime from reconstructed vertices of D0 mesons produced in e+e- annihilations at an average center of mass energy of 42.2 GeV. From fifteen events the D0 lifetime was determined to be (4.3-1.4+2.0±0.8)×10-13s. © 1986 Springer-Verlag.
Published: 1986
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31. A search for particles with magnetic charge produced ine +e− annihilations at 543-1543-1543-1GeV

Author: G. Baranko, Rj Cashmore, P. Mättig, V. Mertens, A. Ladage, D. H. Saxon, R. Wedemeyer, Joseph Izen, P. N. Ratoff, F. J. Kirschfink, E. Ros, H. Kowalski, R. Gerhards, D. M. Binnie, J. Shulman, E. Lohrmann, R. Walczak, J. F. Hassard, Giora Mikenberg, J. Eisenmann, C. Balkwill, H. M. Fischer, A. J. Martin, N. Wainer, U. Karshon, A. Caldwell, S. Strom, Georg Zobernig, B. Bock, J. Chwastowski, Stephen Lloyd, M. Holder, G. P. Heath, H. Hultschig, T. Kracht, P. Rosskamp, G. Poelz, John Hart, Sau Lan Wu, A. Leites, D. Su, P. Joos, Hermann Kolanoski, B. Foster, A. Eskreys, J. K. Sedgbeer, L. Labarga, J. Pawlak, T. Tymieniecka, E. Wicklund, D. J. Mellor, Stephanie Brandt, J. Krüger, H. Hartmann, A. Watson, A. Jocksch, E. Bernardi, J. M. Yelton, E. Ronat, D. Notz, A. Montag, D. Trines, G. E. Forden, K. Gather, G. Yekutieli, Philip Burrows, M. Takashima, K. Genser, M. Cherney, M. G. Bowler, J. Del Peso, Gy. Wolf, Fernando Barreiro, H. U. Martyn, Y. Eisenberg, D. Revel, E. Hilger, P. D. Dauncey, W. Braunschweig, D. Lüke, S. Ritz, Wolfram Dietrich Zeuner, K. U. Pösnecker, D. Muller, A. J. Sephton, A. Shapira, B. Löhr, and I. R. Tomalin
Subjects: Nuclear physics, Physics, Physics and Astronomy (miscellaneous), Bar (music), Electron–positron annihilation, Magnetic monopole, Engineering (miscellaneous), Charged particle, Magnetic field
Abstract: By seeking to identify magnetically charged particles by their trajectories in a magnetic field, we set limits on the production of monopoles and dyons, via the processe+e−→γ*→M$\bar M$, of masses up to 17 GeV and of magnetic charges between 10 e and 70 e
Published: 1988
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32. Search for two-photon production of resonances decaying intoK $$\bar K$$ andK $$\bar K$$ ?

Author: G. Yekutieli, V. Mertens, M. Holder, H. Hultschig, John Hart, A. Jocksch, K. U. Pösnecker, R. Rosskamp, S. L. Wu, D. H. Saxon, D. Su, H. U. Martyn, A. Caldwell, G. Mikenberg, G. Baranko, H. Venkataramania, R.C.E. Devenish, A. Montag, R. J. Cashmore, T. Kracht, M. Cherney, W. G. Jones, R. Mir, J. Thomas, U. Karshon, R. Wedemeyer, Guenter Wolf, E. Lohrmann, P. D. Dauncey, E. Hilger, T. Tymieniecka, K. W. Bell, D. Lüke, Ehud Duchovni, M. Hildebrandt, Fernando Barreiro, S. Ritz, W. A. T. Wan Abdullah, H. Kück, D. M. Binnie, M. G. Bowler, E. Bernardi, A. Shapira, E. Ronat, K. Gather, J. Eisenmann, H. Siebke, E. Ros, A. Eskreys, L. Labarga, Boaz Klima, A. Ladage, B. Neumann, H. Kowalski, C. Jenkins, Philip Bull, P. Mättig, D. A. Garbutt, Y. Eisenberg, S. L. Lloyd, A. T. Wood, D. Trines, R. Walczak, G. E. Forden, M. Mermikides, D. Revel, G. Poelz, D. Strom, W. Braunschweig, G. Kreutz, H. M. Fischer, Georg Zobernig, D. K. Hasell, W. Wallraff, Hermann Kolanoski, J. K. Sedgbeer, C. M. Hawkes, Joseph Izen, Stephanie Brandt, P. J. Dornan, G. P. Heath, Hl Krasemann, Michael Dittmar, Wolfram Dietrich Zeuner, B. Löhr, P. Joos, B. Foster, E. Wicklund, D. J. Mellor, M. Althoff, D. Notz, H. Hartmann, G. Knop, M. Takashima, and F. J. Kirschfink
Subjects: Physics, Nuclear physics, Photon, Physics and Astronomy (miscellaneous), Branching fraction, Product (mathematics), Resonance, Invariant mass, Production (computer science), Atomic physics, Engineering (miscellaneous), Bar (unit)
Abstract: An analysis of the production ofKS0KS0 andK±Ks0π∓ by two quasi-real photons is presented. The cross section forγγ→K0$\overline {K^0 } $, which is given for the γγ invariant mass range fromK$\bar K$ threshold to 2.5 GeV, is dominated by thef′(1525) resonance and an enhancement near theK$\bar K$ threshold. Upper limits on the product of the two-photon width times the branching ratio intoK$\bar K$ pairs are given forΘ(1700),h(2030), and ξ(2220). For exclusive two-photon production ofK±Ks0π∓ no significant signal was observed. Upper limits are given on the cross section ofγγ→K+$\overline {K^0 } $π− orK−K0π+ between 1.4 and 3.2 GeV and on the product of the γγ width times the branching ratio into theK$\bar K$π final states for theηc(2980) and the ι(1440), yieldingΓ(γγ)→i(1440))·BR(i(1440)→K$\bar K$π
Published: 1985
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33. DETERMINATION OF THE TAU-LIFETIME IN HIGH-ENERGY E+E- ANNIHILATIONS

Author: Althof, M., Braunschweig, W., Wallraff, W., Izen, J. M., Mermikides, M., Rudolph, G., Strom, D., Takashima, M., Venkataramania, H., Wicklund, E., Lan Wu, Sau, Zobernig, G., TASSO Collaboration, Fischer, H. M., Hartmann, H., Jocksch, A., Knop, G., Köpke, L., Kolanoski, H., Kück, H., Mertens, V., Wedemeyer, R., Kirschfink, F. J., Wollstadt, M., Eisenberg, Y., Eskreys, A., Gather, K., Hildebrandt, M., Hultschig, H., Joos, P., Kötz, U., Kowalski, H., Ladage, A., Lübelsmeyer, K., Löhr, B., Lüke, D., Mättig, P., Notz, D., Nowak, R. J., Pyrlik, J., Rushton, M., Schütte, W., Trines, D., Tymieniecka, T., Martyn, H.-U., Wolf, G., Xiao, Ch., Fohrmann, R., Hilger, E., Kracht, T., Krasemann, H. L., Leu, P., Lohrmann, E., Pandoulas, D., Poelz, G., Rimkus, J., Pösnecker, K. U., Wiik, B. H., Beuselinck, R., Binnie, D. M., Campbell, A. J., Dornan, P., Foster, B., Garbutt, D. A., Jenkins, C., Jones, T. D., Rosskamp, P., Jones, W. G., McCardle, J., Sedgbeer, J. K., Thomas, J., Wan Abdullah, W. A. T., Bell, K. W., Bowler, M. G., Bull, P., Cashmore, R. J., Clarke, P. E. L., Sander, H. G., Devenish, R., Grossmann, P., Hawkes, C. M., Lloyd, S. L., Salmon, G. L., Youngman, C., Forden, G. E., Hart, J. C., Harvey, J., Hasell, D. K., Schmitz, D., Proudfoot, J., Saxon, D. H., Barreiro, F., Brandt, S., Dittmar, M., Holder, M., Kreutz, G., Neumann, B., Duchovni, E., Karshon, U., Siebke, H., Mikenberg, G., Mir, R., Revel, D., Ronat, E., Shapira, A., Yekutieli, G., Baranko, G., Barklow, T., Caldwell, A., and Cherney, M.
Subjects: Physics, Nuclear physics, Coupling constant, Nuclear and High Energy Physics, High energy, Interaction point, Electron–positron annihilation, ddc:530, Atomic physics, Lepton
Abstract: Physics letters / B 141(3-4), 264 - 270 (1984). doi:10.1016/0370-2693(84)90214-4, Published by North-Holland Publ., Amsterdam
Published: 1984
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34. VECTOR-MESON PRODUCTION IN THE FINAL-STATE K+K-PI+PI- OF PHOTON-PHOTON COLLISIONS

Author: H. Kück, V. Mertens, M. Holder, H. Hultschig, W. G. Jones, John Hart, Sau Lan Wu, A. Ladage, S. Ritz, B. Löhr, P. Joos, B. Foster, E. Wicklund, G. Yekutieli, D. J. Mellor, K. W. Bell, D. M. Binnie, D. Strom, K. Gather, E. Ros, P. Mättig, Stephanie Brandt, Boaz Klima, G. Mikenberg, R. J. Cashmore, E.E. Ronat, M. Takashima, P. D. Dauncey, T. Tymieniecka, R. Wedemeyer, R. Mir, D. Trines, P. J. Dornan, D. Su, C. Jenkins, H. Kowalski, D. A. Garbutt, Guenter Wolf, G. Baranko, W. A. T. Wan Abdullah, B. Bock, W. Wallraff, R.C.E. Devenish, Hermann Kolanoski, J. Krüger, J. K. Sedgbeer, H. Hartmann, Y. Eisenberg, E. Bernardi, T. Kracht, R. Walczak, W. Braunschweig, H. U. Martyn, A. Montag, M. Cherney, Wolfram Dietrich Zeuner, J. Thomas, M. Althoff, D. Notz, A. Jocksch, Fernando Barreiro, K. U. Pösnecker, D. Revel, A. Shapira, P. Rosskamp, E. Hilger, S. L. Lloyd, M. G. Bowler, G. Poelz, R. Gerhards, G. P. Heath, Hl Krasemann, J.F. Kirschfink, A. Caldwell, E. Lohrmann, J. Eisenmann, Ehud Duchovni, A. Eskreys, U. Karshon, L. Labarga, B. Neumann, G. E. Forden, P. N. Ratoff, D. K. Hasell, Joseph Izen, H. M. Fischer, Georg Zobernig, D. H. Saxon, Philip Bull, and D. Lüke
Subjects: Nuclear physics, Physics, Particle physics, Antiparticle, Particle decay, Pion, Effective mass (solid-state physics), Pair production, Physics and Astronomy (miscellaneous), Meson, Elementary particle, Vector meson, Engineering (miscellaneous)
Abstract: Vector meson production is studied in the reaction γγ→K+K-π+π-. A clear Φ(1020) signal is seen in the K+K- mass distribution and a K*0 (890) signal is visible in the K±π∓ one. Both do not seem to be strongly correlated with quasi two body final states. Cross sections for the processes γγ→K+K-π+π-, γγ→Φπ+π-, γγ→K+0K±π∓ and upper limits for the production of Φp, ΦΦ and K*0 {Mathematical expression} are given as function of the invariant γγ mass. © 1986 Springer-Verlag.
Published: 1986

35. CHARGED MULTIPLICITY DISTRIBUTIONS AND CORRELATIONS IN E+E- ANNIHILATION AT PETRA ENERGIES

Author: B. Löhr, E. Hilger, D. Muller, Fernando Barreiro, P. Joos, B. Foster, K. U. Pösnecker, D. H. Saxon, D. Strom, A. Shapira, J. Shulman, A. Leites, D. Revel, A. Eskreys, A. Montag, Philip Burrows, J. Krüger, J. Del Peso, K. Gather, Stephanie Brandt, H. Hartmann, J. F. Hassard, R. Gerhards, H. U. Martyn, M. E. Veitch, Janusz Chwastowski, N. Wainer, G. E. Forden, A. Ladage, Wolfram Dietrich Zeuner, E. Bernardi, H. M. Fischer, A. J. Martin, K. Genser, F. J. Kirschfink, G. Poelz, M. G. Bowler, J. M. Pawlak, Georg Zobernig, U. Karshon, Eduardo Ros, T. Kracht, P. Mättig, H. Kowalski, D. Notz, D. Trines, Jens Hartmann, R. Wedemeyer, E.E. Ronat, Giora Mikenberg, D. Su, A. Caldwell, A. Jocksch, Hermann Kolanoski, Gy. Wolf, M. Takashima, M. Holder, D. Lüke, S. Ritz, H. Hultschig, John Hart, Sau Lan Wu, E. Lohrmann, Y. Eisenberg, R. Walczak, W. Braunschweig, and G. Yekutieli
Subjects: Physics, Quark, Particle physics, Annihilation, Physics and Astronomy (miscellaneous), Electron–positron annihilation, Hadron, Lund string model, Multiplicity (mathematics), Elementary particle, Charged particle, Nuclear physics, High Energy Physics::Experiment, Engineering (miscellaneous)
Abstract: We report on an analysis of the multiplicity distributions of charged particles produced in e+e- annihilation into hadrons at c.m. energies between 14 and 46.8 GeV. The charged multiplicity distributions of the whole event and single hemisphere deviate significantly from the Poisson distribution but follow approximate KNO scaling. We have also studied the multiplicity distributions in various rapidity intervals and found that they can be well described by the negative binomial distribution only for small central intervals. We have also analysed forward-backward multiplicity correlations for different energies and selections of particle charge and shown that they can be understood in terms of the fragmentation properties of the different quark flavours and by the production and decay of resonances. These correlations are well reproduced by the Lund string model. © 1989 Springer-Verlag.
Published: 1989

36. PARTICLE CORRELATION OBSERVED IN E+E- ANNIHILATIONS INTO HADRONS AT CM ENERGIES BETWEEN 29 AND 37 GEV

Author: H. Kowalski, U. Karshon, M. Takashima, Stephanie Brandt, H. U. Martyn, D. Su, B. Löhr, K. Gather, E. Ros, D. Strom, P. Joos, B. Foster, Boaz Klima, Luis Labarga, W. G. Jones, H. Venkataramania, H. Kück, E. Wicklund, B. Neumann, R. Rosskamp, G. E. Forden, D. J. Mellor, P. D. Dauncey, T. Tymieniecka, H. Hartmann, E. Hilger, U. Kötz, G. Baranka, D. Trines, R.C.E. Devenish, K. U. Pösnecker, H. Siebke, W. A. T. Wan Abdullah, P. J. Dornan, D. A. Garbutt, E. Bernardi, Y. Eisenberg, A. Shapira, M. Althoff, R. Wedemeyer, D. Notz, Fernando Barreiro, R. Fohrmann, W. Braunschweig, P. N. Ratoff, A. Jocksch, Hermann Kolanoski, T. Kracht, C. M. Hawkes, D. Lüke, J. K. Sedgbeer, C. Jenkins, Rj Cashmore, S. Ritz, G. Poelz, Michael Dittmar, Wolfram Dietrich Zeuner, G. Yekutieli, M. Hildebrandt, Gy. Wolf, D. H. Saxon, M. Mermikides, D. Revel, P. Mättig, W. Wallraff, Philip Bull, G. Kreutz, R. Mir, A. T. Wood, M. G. Bowler, G. Mikenberg, A. Montag, M. Cherney, F. J. Kirschfink, J. Thomas, E.E. Ronat, G. Knop, M. Holder, H. Hultschig, John Hart, A. Lagage, A. Caldwell, Stephen Lloyd, G. P. Heath, Hl Krasemann, D. K. Hasell, Ehud Duchovni, Joseph Izen, H. M. Fischer, E. Lohrmann, J. Eisenmann, A. Eskreys, Georg Zobernig, V. Mertens, K. W. Bell, S. L. Wu, and D. M. Binnie
Subjects: Quantum chromodynamics, Physics, Particle physics, Range (particle radiation), Physics and Astronomy (miscellaneous), Electron–positron annihilation, Hadron, Charge (physics), Charged particle, Nuclear physics, Particle, Rapidity, High Energy Physics::Experiment, Engineering (miscellaneous)
Abstract: We have studied the correlations between charged particles produced in e+e- annihilations into hadrons at c.m. energies between 29 and 37 GeV. We have analysed the correlations between the charged multiplicities of the jets and the two particle rapidity and charge correlations. No evidence for correlations between the multiplicities of the two jets is found. Two particle short range rapidity and charge correlations are observed, indicating that particles cluster in rapidity and that their charges compensate locally. An extensive study of these correlation effects by QCD Monte Carlo calculations was performed. Evidence for charge correlations due to Bose-Einstein statistics is also observed. © 1985 Springer-Verlag.
Published: 1985

37. JET PRODUCTION AND FRAGMENTATION IN E+E- ANNIHILATION AT 12-43 GEV

Author: Althoff, M., Braunschweig, W., Siebke, H., Caldwell, A., Cherney, M., Izen, J. M., Mermikides, M., Rudolph, G., Strom, D., Venkataramania, H., Wicklund, E., Wu, Sau Lan, Zobernig, G., Wallraff, W., TASSO Collaboration, Fischer, H. M., Hartmann, H., Hillen, W., Joksch, A., Knop, G., Köpke, L., Kolanoski, H., Kück, H., Kirschfink, F. J., Mertens, V., Wedemeyer, R., Wermes, N., Wollstadt, M., Eisenberg, Y., Gather, K., Hultschig, H., Joos, P., Koch, W., Kötz, U., Lübelsmeyer, K., Kowalski, H., Ladage, A., Löhr, B., Lüke, D., Mattig, P., Notz, D., Nowak, R. J., Pyrlik, J., Quarrie, D. R., Rushton, M., Martyn, H. -U., Schütte, W., Trines, D., Wolf, G., Xiao, Ch., Fohrmann, R., Hilger, E., Kracht, T., Krasemann, H. L., Leu, P., Lohrmann, E., Peise, G., Pandoulas, D., Poelz, G., Pösnecker, K. U., Wiik, B. H., Beuselinck, R., Binnie, D. M., Campbell, A. J., Dornan, P. J., Foster, B., Garbutt, D. A., Rimkus, J., Jenkins, C., Jones, T. D., Jones, W. G., McCardle, J., Sedgbeer, J. K., Thomas, J., Abdullah, W. A. T. Wan, Bell, K. W., Bowler, M. G., Bull, P., Rosskamp, P., Cashmore, R. J., Clarke, P. E. L., Devenish, R., Grossmann, P., Hawkes, C. M., Lloyd, S. L., Salmon, G. L., Wyatt, T. R., Youngman, C., Forden, G. E., Sander, H. G., Hart, J. C., Harvey, J., Hasell, D. K., Proudfoot, J., Saxon, D. H., Woodworth, P. L., Barreiro, F., Dittmar, M., Holder, M., Neumann, B., Schmitz, D., Duchovni, E., Karshon, U., Mikenberg, G., Mir, R., Revel, D., Ronat, E., Shapira, A., Yekutieli, G., Baranko, G., and Barklow, T.
Subjects: Quark, Physics, Particle physics, Annihilation, Physics and Astronomy (miscellaneous), Astrophysics::High Energy Astrophysical Phenomena, Electron–positron annihilation, Hadron, Bremsstrahlung, Charged particle, Gluon, Nuclear physics, Pair production, High Energy Physics::Experiment, ddc:530, Nuclear Experiment, Engineering (miscellaneous)
Abstract: The European physical journal / C 22(4), 307 - 340 (1984). doi:10.1007/BF01547419, Published by Springer, Berlin
Published: 1984
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38. SEARCH FOR SPINLESS BOSONS IN E+E- ANNIHILATION

Author: P. Mättig, V. Mertens, D. Trines, H. U. Martyn, Hermann Kolanoski, J. K. Sedgbeer, W. A. T. Wan Abdullah, T. D. Jones, A. Ladage, H. Siebke, H. Hartmann, J. McCardle, P. E. L. Clarke, Y. Eisenberg, W. Braunschweig, T. Kracht, W. Schütte, Fernando Barreiro, K. W. Bell, D. Lüke, S. Ritz, K. Gather, P. Dauncey, B. Neumann, C. M. Hawkes, H. Kück, M. Dittmar, Boaz Klima, T. Tymieniecka, Gy. Wolf, R. Beuselinck, D.W. Schmitz, B. Löhr, U. Kötz, M. Althoff, D. Notz, Giora Mikenberg, G. Yekutieli, P. Joos, B. Foster, U. Karshon, R. Wedemeyer, P. J. Dornan, D. A. Garbutt, G. E. Forden, R. J. Nowak, E. Wicklund, G. Baranko, D. Pandoulas, K. U. Pösnecker, W. G. Jones, D. Strom, D. J. Mellor, R. Fohrmann, M. Takashima, R. Rosskamp, M. Rushton, H. Venkataramania, R.C.E. Devenish, G. Rudolph, J. Pyrlik, A. Shapira, P. Leu, E. Hilger, M. Mermikides, D. Revel, R. Mir, C. Jenkins, Rj Cashmore, P. Grossmann, H. Kowalski, G. Poelz, Wolfram Dietrich Zeuner, W. Wallraff, Philip Bull, G. Kreutz, J. Harvey, D. M. Binnie, M. Cherney, D. H. Saxon, J. Thomas, C. Youngman, A. Jocksch, M. G. Bowler, M. Holder, H. Hultschig, John Hart, Sau Lan Wu, F. J. Kirschfink, E.E. Ronat, S. Brandt, Hl Krasemann, G. Knop, E. Lohrmann, J. Eisenmann, H. M. Fischer, Georg Zobernig, D. K. Hasell, Joseph Izen, A. Caldwell, Stephen Lloyd, Ehud Duchovni, and A. Eskreys
Subjects: Physics, Quark, Nuclear and High Energy Physics, Particle physics, Large Hadron Collider, Annihilation, Hadron, High Energy Physics::Phenomenology, law.invention, Nuclear physics, law, High Energy Physics::Experiment, Center of mass, Collider, Nuclear Experiment, Boson, Lepton
Abstract: We have measured the cross sections for e+e− → e+e−, e+e− → μ+μ−, e+e− → γγ and e+e− → hadrons in an energy scan at center of mass energies between 39.79 and 46.72 GeV in 30 MeV steps. New spinless bosons, whose existence has been postulated as a possible means to explain the anomalously large radiative width of the Z0 found at the CERN SPS p p collider, are ruled out in the scan region. The data are used to set limits on the couplings to lepton, photon and quark pairs of bosons with masses above 46.72 GeV.
Published: 1985

39. A study of Energy-Energy correlations between 12 and 46.8 GeV C.M. Energies

Author: Braunschweig, W., Gerhards, R., Jocksch, A., Mertens, V., Wedemeyer, R., Foster, B., Martin, A. J., Sephton, A. J., Barreiro, F., Bernardi, E., Chwastowski, J., Eisenberg, Y., Kirschfink, F. J., Eskreys, A., Gather, K., Hultschig, H., Genser, K., Joos, P., Kowalski, H., Ladage, A., Löhr, B., Lüke, D., Mättig, P., Martyn, H. -U., Montag, A., Notz, D., Pawlak, J., Ronat, E., Trines, D., Tymieniecka, T., Walczak, R., Wolf, G., Zeuner, W., Kolanoski, H., Rosskamp, P., Kracht, T., Krüger, J., Lohrmann, E., Poelz, G., Pösnecker, K. -U., Binnie, D. M., Sedgbeer, J. K., Shulman, J., Su, D., Watson, A. T., Bock, B., Leites, A., Peso, J., Ros, E., Balkwill, C., Bowler, M. G., Burrows, P. N., Cashmore, R. J., Dauncey, P., Heath, G. P., Mellor, D. J., Eisenmann, J., Ratoff, P., Tomalin, I., Yelton, J. M., Lloyd, S. L., Forden, G. E., Hart, J. C., Saxon, D. H., Brandt, S., Holder, M., Labarga, L., Fischer, H. M., Karshon, U., Mikenberg, G., Revel, D., Shapira, A., Wainer, N., Yekutieli, G., Baranko, G., Caldwell, A., Cherney, M., Izen, J. M., Hartmann, H., Muller, D., Ritz, S., Strom, D., Takashima, M., Wicklund, E., Wu, Sau Lan, Zobernig, G., TASSO Collaboration, and Hilger, E.
Subjects: Quantum chromodynamics, Physics, Particle physics, Annihilation, Physics and Astronomy (miscellaneous), media_common.quotation_subject, Electron–positron annihilation, Elementary particle, Lambda, Asymmetry, Nuclear physics, Angular dependence, ddc:530, Quantum field theory, Engineering (miscellaneous), media_common
Abstract: The European physical journal / C 36(3), 349 - 361 (1987). doi:10.1007/BF01573928, We present data on energy-energy correlations (EEC) and their related asymmetry (AEEC) ine$^+$e$^−$ annihilation in the centre of mass energy range 12$, Published by Springer, Berlin
Published: 1987
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40. PRODUCTION AND MUONIC DECAY OF HEAVY QUARKS IN E+E- ANNIHILATION AT 34.5 GEV

Author: H. Venkataramania, J. Pyrlik, E. Hilger, D. Trines, W. Koch, H. Kowalski, C. Youngman, G. Poelz, Hermann Kolanoski, J. K. Sedgbeer, W. A. T. Wan Abdullah, G. E. Forden, Walter Dr. Hillen, H. Hartmann, R. Mir, G. Peise, J. Proudfoot, A. L. Campbell, W. Jocksch, Michael Dittmar, G. Yekutieli, P. E. L. Clarke, R. Wedemeyer, T. Barklow, R.C.E. Devenish, K. W. Bell, P. Mättig, M. Althoff, D. Notz, B. Foster, D. M. Binnie, A. Shapira, M. Holder, Norbert Wermes, H. Hultschig, B. H. Wiik, John Hart, Sau Lan Wu, B. Löhr, P. Joos, E. Wicklund, K. Lübelsmeyer, Y. Eisenberg, W. Braunschweig, Hl Krasemann, C. M. Hawkes, Juergen Thomas, P. Leu, E. Lohrmann, D.W. Schmitz, D. Strom, P. J. Dornan, D. Pandoulas, H. Siebke, R. Fohrmann, H. U. Martyn, T. R. Wyatt, M. Rushton, G. Rudolph, W. Wallraff, Philip Bull, D. Lüke, L. Köpke, M. Cherney, U. Kötz, H. G. Sander, D. A. Garbutt, W. Schütte, R. J. Nowak, Fernando Barreiro, J. Harvey, J. Rimkus, M. Mermikides, D. Revel, Gy. Wolf, Ch. Xiao, P. Rosskamp, M. G. Bowler, C. Jenkins, Rj Cashmore, W. G. Jones, Ehud Duchovni, P. L. Woodworth, P. Grossmann, J. McCardle, K. Gather, T. D. Jones, R. Beuselinck, D. K. Hasell, D. Ronat, Gl Salmon, Joseph Izen, D. R. Quarrie, A. Ladage, F. J. Kirschfink, D. H. Saxon, A. Caldwell, U. Karshon, Stephen Lloyd, G. Knop, B. Neumann, H. M. Fischer, Georg Zobernig, Giora Mikenberg, H. Kück, M. Wollstadt, and T. Kracht
Subjects: Nuclear physics, Physics, Particle decay, Particle physics, Muon, Pair production, Annihilation, Physics and Astronomy (miscellaneous), Branching fraction, Electron–positron annihilation, Hadron, Engineering (miscellaneous), Lepton
Abstract: The production of prompt muons in e+e- annihilation has been studied at centre of mass energies near 34.5 GeV. The measured semi-muonic branching ratios of b and c quarks are B(b»Xμv) =0.117±0.028±0.01 and B(c→Xμv)=0.082 ±0.012a-0.01+0.02. The fragmentation functions of heavy quarks are hard, =0.85a-0.12-0.07+0.10+0.02 and =0.77a-0.07-0.11+0.05+0.03. Limits have been set on flavour changing neutral current decays:B(b→Xμ+μ-)
Published: 1984

41. A STUDY OF BHABHA SCATTERING AT PETRA ENERGIES

Author: H. U. Martyn, P. N. Ratoff, G. E. Forden, D. M. Binnie, R. Gerhards, J. Krüger, G. Baranko, Wolfram Dietrich Zeuner, P. Joos, B. Foster, J. P. Cerezo, P. D. Dauncey, E. Wicklund, D. J. Mellor, Rj Cashmore, B. Bock, T. Kracht, N. Wainer, J. Del Peso, D. Muller, D. Strom, A. Watson, P. Mättig, J. Chwastowski, A. J. Sephton, K. U. Pösnecker, K. Gather, G. Yekutieli, C. Balkwill, V. Mertens, J. Hartmann, M.A. Garcia, A. Leites, J. M. Yelton, B. Löhr, D. H. Saxon, E. Lohrmann, E. Ronat, D. Notz, G. Poelz, D. Lüke, Joseph Izen, R. Wedemeyer, A. Ladage, S. Ritz, H. M. Fischer, A. J. Martin, A. Shapira, Fernando Barreiro, Hermann Kolanoski, H. Hartmann, A. Eskreys, R. Walczak, J. K. Sedgbeer, A. Montag, L. Labarga, E. Ros, I. R. Tomalin, M. Holder, Georg Zobernig, D. Trines, H. Hultschig, W. Braunschweig, A. Jocksch, E. Hilger, J. Pawlak, Stephanie Brandt, D. Su, T. Tymieniecka, M. Takashima, John Hart, H. Kowalski, G. P. Heath, P. Rosskamp, Y. Eisenberg, D. Revel, Philip Burrows, Sau Lan Wu, J. F. de Trocóniz, J. Shulman, Gy. Wolf, A. Caldwell, E. Bernardi, K. Genser, M. G. Bowler, Stephen Lloyd, Giora Mikenberg, F. J. Kirschfink, and U. Karshon
Subjects: Physics, Particle physics, Physics and Astronomy (miscellaneous), Electroweak interaction, Elementary particle, Weinberg angle, Physics::History of Physics, Standard Model, Nuclear physics, Particle acceleration, High Energy Physics::Experiment, Center of mass, Quantum field theory, Engineering (miscellaneous), Bhabha scattering
Abstract: We report on high statistics Bhabha scattering data taken with the TASSO experiment at PETRA at center of mass energies from 12 GeV to 46.8 GeV. We present an analysis in terms of electroweak parameters of the standard model, give limits on QED cut-off parameters and look for possible signs of compositeness. © 1988 Springer-Verlag.
Published: 1988

42. EXPERIMENTAL-STUDY OF JET MASSES IN E+E- ANNIHILATION AT CM ENERGIES BETWEEN 12-GEV AND 43.5-GEV

Author: A. Montag, D. H. Saxon, G. Yekutieli, Hermann Kolanoski, J. Del Peso, Janusz Chwastowski, A. Caldwell, Guenter Wolf, M. E. Veitch, Wolfram Dietrich Zeuner, B. Löhr, Ian R Tomalin, K. U. Pösnecker, A. Jocksch, A. Hassard, J. Shulman, Eduardo Ros, B. Foster, R. J. Cashmore, G. Poelz, M. Takashima, J. M. Pawlak, Fernando Barreiro, K. Genser, D. Muller, M. G. Bowler, A. Leites, G. Mikenberg, R. Gerhards, L. Labarga, Y. Eisenberg, R. Walczak, E. Hilger, M. Holder, A. N. Wainer, R. Wedemeyer, T. Kracht, W. Braunschweig, D. Revel, H. M. Fischer, A. J. Martin, Stephanie Brandt, Georg Zobernig, John Hart, D. Notz, U. Karshon, Luis Hervas, Sau Lan Wu, H. Kowalski, J. Krüger, H. Hartmann, H. U. Martyn, E. Bernardi, E.E. Ronat, F. J. Kirschfink, G. P. Heath, Jens Hartmann, E. Lohrmann, D. Su, D. Lüke, S. Ritz, M. Traseira, and Philip Burrows
Subjects: Quantum chromodynamics, Physics, Particle physics, Annihilation, Physics and Astronomy (miscellaneous), Electron–positron annihilation, High Energy Physics::Phenomenology, Hadron, Elementary particle, Lambda, Hadronization, Nuclear physics, Mass spectrum, High Energy Physics::Experiment, Nuclear Experiment, Engineering (miscellaneous)
Abstract: Data on jet masses, resulting from the decomposition ofe + e − hadronic final states into two hemispheres, are presented at centre of mass energies between 12 and 43.5 GeV. Comparisons are made with bareO(α 2 ) QCD predictions as well as with QCD based fragmentation models. Values for α s and $$\Lambda _{\overline {MS} } $$ are determined, both with and without hadronization effects included. Upper and lower limits for $$\Lambda _{\overline {MS} } $$ independent of fragmentation models have been determined to be 0.480±0.025 GeV and 0.047±0.007 GeV respectively.

43. PION, KAON AND PROTON CROSS-SECTIONS IN E+E- ANNIHILATION AT 34 GEV AND 44 GEV CM ENERGY

Author: Guenter Wolf, I. M. Silvester, E.E. Ronat, C. Balkwill, D. M. Binnie, E. Lohrmann, H. Kowalski, M. Takashima, K. U. Pösnecker, A. Montag, J. Del Peso, P. Rehders, G. P. Heath, Hl Krasemann, M. Holder, H. Hultschig, J. Krüger, A. Shapira, John Hart, G. Tysarczyk, H. Hartmann, Sau Lan Wu, E. Bernardi, Stephanie Brandt, A. Jocksch, J. M. Pawlak, D. H. Saxon, W. Gerhardt, A. Eskreys, B. Bock, G. Poelz, L. Labarga, H. M. Fischer, H. U. Martyn, U. Karshon, A. J. Martin, Philip Burrows, T. Kracht, A. Leites, Fernando Barreiro, R. Wedemeyer, C. Winand, Jens Hartmann, Georg Zobernig, D. Notz, G. E. Forden, F. J. Kirschfink, D. Revel, A. Caldwell, John Hassard, D. Su, P. N. Ratoff, R. Gerhards, K. Genser, M. G. Bowler, N. Wainer, Y. Eisenberg, R. Walczak, W. Braunschweig, B. Löhr, P. Joos, B. Foster, E. Wicklund, A. Ladage, D. Lüke, S. Ritz, G. Yekutieli, Wolfram Dietrich Zeuner, Eduardo Ros, R. J. Cashmore, E. Hilger, Janusz Chwastowski, K. Gather, G. Mikenberg, M. E. Veitch, P. Mättig, J. Shulman, I. R. Tomalin, D. Muller, D. Strom, A. J. Sephton, D. Trines, and Hermann Kolanoski
Subjects: Physics, Particle physics, Annihilation, Physics and Astronomy (miscellaneous), Proton, Meson, Astrophysics::High Energy Astrophysical Phenomena, Electron–positron annihilation, Elementary particle, Nuclear physics, Pion, Antiproton, High Energy Physics::Experiment, Production (computer science), Nuclear Experiment, Engineering (miscellaneous)
Abstract: The inclusive production of π± andK± mesons and of protons and antiprotons ine+e− annihilations has been measured at 34 GeV and 44 GeV center of mass energy; in addition π± mesons have been measured at 44 GeV c.m. energy. Differential cross sections and particle yields are given. At 34 GeV average multiplicities are: $$\begin{gathered} \left\langle {n\left( {\pi ^ \pm } \right)} \right\rangle = 10.9 \pm 0.5,\left\langle {n\left( {K^ \pm } \right)} \right\rangle = 1.76 \pm 0.20, \hfill \\ \left\langle {n\left( {p + \bar p} \right)} \right\rangle = 0.67 \pm 0.06 \hfill \\ \end{gathered} $$ and at 44 GeV: $$\left\langle {n\left( {\pi ^ \pm } \right)} \right\rangle = 11.1 \pm 0.5,\left\langle {n\left( {\pi ^0 } \right)} \right\rangle = 5.4 \pm 1.0.$$

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