Zobrazeno 1 - 10
of 44
pro vyhledávání: '"H.D. Mertiens"'
Autor:
E. Lehmann, B. Stella, T. Azemoon, G. Knies, H. Spitzer, B. Sechi-Zorn, Fernando Barreiro, H. Genzel, Ch. Gerke, K. Lau, B. Lewendel, Stephanie Brandt, H. Kapitza, A. Klovning, R. G. Glasser, U. Timm, G. E. Welch, G. T. Zorn, L. Criegee, P. Waloschek, H. J. Meyer, M. Scarr, G. Franke, C. Y. Chang, H. J. Daum, H.D. Mertiens, K. Wacker, Günter Flügge, Ch. Berger, M. Rost, B. Koppitz, E. Lillestöl, W. Lackas, L. Boesten, Wolfgang Wagner, D. Schmidt, H. C. Dehne, W. Gabriel, R. Grigull, J. Bürger, H. Meyer, G. Zech, H. Ackermann, O. Meyer, K. H. Pape, H.D. Reich, Claus Grupen, U. Michelsen, W. Zimmermann, O. Achterberg, R. O. Polvado, J. A. Skard, Gideon Alexander, Volker Blobel, Andris Skuja, A. Eskreys, E. Lillethun, K. Derikum, W. Lühraen, Frank Raupach, A. Bäcker, T. N. Ranga Swamy, R. van Staa, B. Neumann, G. G. Winter, R.C.E. Devenish, V. Hepp, R. G. Kellog, M. Rössler
Publikováno v:
Physics Letters B. 95:313-317
Measurements of the charged multiplicities for hadron production in e+e− annihilation in the center of mass energy range 9–32 GeV have been made. The average charged multiplicity has an energy dependence much stronger than ln s and similar to tha
Autor:
L. Criegee, B. Sechi-Zorn, Fernando Barreiro, R. van Staa, Ch. Gerke, A. Klovning, M. Rössler, E. Lehmann, R. G. Glasser, U. Timm, G. G. Winter, W. Wagner, T. Azemoon, Stephanie Brandt, Claus Grupen, Frank Raupach, G. Knies, H. J. Daum, Andris Skuja, H. Spitzer, B. Koppitz, H. Kapitza, E. Lillestöl, H. C. Dehne, H. Genzel, P. Waloschek, G. E. Welch, G. T. Zorn, M. Rost, D. Schmidt, H. Meyer, C. Y. Chang, G. Franke, R. Grigull, K. Wacker, W. Lackas, A. Diekmann, H.D. Mertiens, K. Lau, L. Boesten, J. Bürger, B. Stella, G. Zech, R. Devenish, W. Gabriel, O. Achterberg, R. Maschuw, K. Derikum, W. Lührsen, Ch. Berger, G. Flügge, H.D. Reich, R. G. Kellogg, G. Alexander, H. Ackermann, Volker Blobel, W. Zimmermann, O. Meyer, K. H. Pape, J. A. Skard, A. Eskreys, E. Lillethun, T. N. Ranga Swamy, A. Bäcker, B. Neumann
Publikováno v:
Physics Letters B. 86:413-417
Results on e+e− annihilation into hadrons at c.m. energies between 22 and 31.6 GeV are presented. The data were accumulated with the PLUTO detector at PETRA. The events are dominantly of the two-jet type. The value of the relative hadronic cross se
Autor:
Andris Skuja, W. Gabriel, R. Maschuw, W. Lührsen, W. Lackas, Ch. Berger, P. Waloschek, Wolfgang Wagner, B. Sechi-Zorn, G. E. Welch, G. T. Zorn, R. van Staa, J. A. Skard, O. Achterberg, R. G. Glasser, U. Timm, G. Horlitz, B. Stella, R. Devenish, A. Klovning, K. Wacker, S. Wolff, H. Kapitza, K. Derikum, Claus Grupen, H. J. Daum, L. Boesten, M. Rost, Volker Blobel, B. Neumann, G. G. Winter, B. Koppitz, D. Schmidt, K. Lau, R. G. Kellog, R. Grigull, Frank Raupach, C. Y. Chang, E. Lillethun, O. Meyer, H. Genzel, G. Franke, K. H. Pape, J. Bürger, L. Criegee, Fernando Barreiro, M. Rössler, E. Lehmann, H. J. Meyer, G. Alexander, H. Ackermann, Ch. Gerke, A. Bäcker, T. Azemoon, G. Knies, G. Flügge, H.D. Reich, Stephanie Brandt, G. Zech, W. Zimmermann, H. C. Dehne, H. Spitzer, E. Lillestöl, H. Meyer, H.D. Mertiens
Publikováno v:
Physics Letters B. 81:410-415
First results from the magnetic detector PLUTO at the new e + e − storage ring PETRA are shown. The ratio R of the cross section for hadron production to that for μ-pair production has been measured to be R = 5.0 ± 0.5 at 13 GeV and 4.3 ±0.5 at
Autor:
E. Lehmann, T. Azemoon, G. Knies, C. Y. Chang, B. Sechi-Zorn, Claus Grupen, W. Lührsen, B. Neumann, O. Achterberg, Ch. Berger, A. Eskreys, H.D. Mertiens, U. Michelsen, H. Spitzer, E. Lillethun, R. G. Glasser, U. Timm, V. Hepp, H. C. Dehne, R. O. Polvado, H. Ackermann, H. Kapitza, Stephanie Brandt, J. A. Skard, Fernando Barreiro, P. Waloschek, H. Genzel, L. Criegee, Ch. Gerke, E. Lillestöl, B. Koppitz, G. Franke, A. Diekmann, K. Wacker, H. Meyer, B. Lewendel, W. Lackas, H. J. Meyer, A. Klovning, G. Flügge, Volker Blobel, H.D. Reich, R. Grigull, K. Lau, L. Boesten, M. Rost, W. Zimmermann, T. N. Ranga Swamy, J. Bürger, G. E. Welch, G. T. Zorn, A. Bäcker, G. Zech, R. G. Kellogg, O. Meyer, K. H. Pape, W. Wagner, H. J. Daum, D. Schmidt, W. Gabriel, Andris Skuja, R. van Staa, G. G. Winter, Frank Raupach, B. Stella, R. Devenish, K. Derikum, M. Rössler
Publikováno v:
Physics Letters B. 91:148-151
We have performed a search for narrow resonances in the center of mass energy range from 29.90 to 31.46 GeV using the e+e− storage ring PETRA at DESY. We present the total cross section for hadron production and an upper limit for resonance product
Autor:
Fernando Barreiro, H. Kapitza, Ch. Gerke, H. J. Meyer, L. Criegee, R. van Staa, H.D. Mertiens, G. Franke, K. Lau, P. Waloschek, Claus Grupen, W. Lührsen, B. Sechi-Zorn, U. Michelsen, E. Lillestöl, Ch. Berger, A. Klovning, V. Hepp, H. Meyer, H.D. Reich, M. Rost, L. Boesten, W. Gabriel, W. Wagner, M. Scarr, D. Schmidt, H. J. Daum, W. Zimmermann, K. Derikum, G. E. Welch, G. T. Zorn, H. Ackermann, G. Zech, W. Lackas, B. Lewendel, J. Bürger, A. Eskreys, H. C. Dehne, B. Neumann, Stephanie Brandt, R. G. Kellogg, O. Meyer, K. H. Pape, O. Achterberg, J. A. Skard, C. Y. Chang, Volker Blobel, R. O. Polvado, A. Bäcker, M. Rössler, E. Lehmann, G. Knies, Andris Skuja, Frank Raupach, R. Grigull, R. G. Glasser, U. Timm, B. Stella, H. Spitzer, H. Genzel, B. Koppitz, G. G. Winter
Publikováno v:
Physics Letters B. 99:287-291
We present new high statistics data on hadron production in photon-photon reactions. The data are analyzed in terms of an electron-photon scattering formalism. The dependence of the total cross section of Q 2 , the four-momentum transfer squared of t
Autor:
K. Derikum, B. Sechi-Zorn, H. Kapitza, R. G. Glasser, U. Timm, B. Koppitz, D. Schmidt, Richard G Kellogg, V. Hepp, B. Lewendel, Andris Skuja, E. Lillestöl, B. Stella, A. Eskreys, G. T. Zorn, G. Zech, M. Rössler, W. Wagner, G. G. Winter, Frank Raupach, R. van Staa, M. Scarr, E. Lehmann, W. Lührsen, H. Spitzer, H. J. Daum, K. H. Lau, H. Meyer, Ch. Berger, T. Azemoon, G. Knies, G. Flügge, H. Genzel, J. A. Skard, L. Boesten, H.D. Reich, A. Bäcker, Claus Grupen, W. Zimmermann, H. J. Meyer, U. Michelsen, W. Gabriel, C. Y. Chang, G. E. Welch, W. Lackas, Volker Blobel, H.D. Mertiens, O. Meyer, R. Grigull, K. H. Pape, O. Achterberg, R. O. Polvado, B. Neumann, H. Ackermann, G. Franke, Stephanie Brandt, A. Klovning, L. Criegee, Fernando Barreiro, Ch. Gerke, M. Rost, J. Bürger
Publikováno v:
Physics Letters B. 99:489-494
We have measured the reaction ee → μμ and ee → ττ at center of mass energies from 9.4 to 31.6 GeV. The production cross sections are in agreement with the predictions of quantum electrodynamics, resulting in cutoff parameter limits of 70–10
Autor:
H. Kapitza, Fernando Barreiro, Ch. Gerke, G. Alexander, H. Ackermann, E. Lillestöl, K. Wacker, M. Rössler, G. Flügge, H. Spitzer, H. Meyer, E. Lehmann, L. Boesten, A. Klovning, W. Lührsen, H.D. Reich, Ch. Berger, T. Azemoon, G. Knies, T. N. Ranga Swamy, Claus Grupen, O. Achterberg, V. Hepp, R. van Staa, G. G. Winter, D. Schmidt, W. Zimmermann, A. Eskreys, Andris Skuja, E. Lillethun, U. Michelsen, H. Genzel, R. O. Polvado, P. Waloschek, B. Sechi-Zorn, M. Rost, W. Gabriel, W. Lackas, C. Y. Chang, G. E. Welch, W. Wagner, M. Scarr, H. J. Daum, G. T. Zorn, K. H. Lau, H. C. Dehne, J. Bürger, B. Koppitz, Stephanie Brandt, G. Franke, H.D. Mertiens, R. Grigull, B. Lewendel, A. Diekmann, L. Criegee, G. Zech, R. G. Glasser, U. Timm, R. G. Kellogg, H. J. Meyer, O. Meyer, K. H. Pape, A. Bäcker, J. A. Skard, B. Neumann, Volker Blobel, Frank Raupach, K. Derikum, B. Stella, R. Devenish
Publikováno v:
Physics Letters B. 94:254-258
We have measured the production of charged particle pairs in e + e − initiated two-photon reactions. The observed rates and invariant mass spectra agree with expectations from QED if a resonant π + π − production at the f 0 mass is added. Assum
Autor:
T. Azemoon, F. Janata, H.D. Mertiens, H. Ackermann, Wolfgang Wagner, G. Dick, D. Schmidt, W. Gabriel, H.D. Reich, R. Grigull, R. Bühring, Ch. Berger
Publikováno v:
Physics Letters B. 70:471-474
We present the first data on the inclusive structure function for π0-electroproduction. The data are compared to charged pion electroproduction and charged pion production from electron-positron annihilation taking the quark-parton model as a guide.
Autor:
R. G. Kellogg, O. Meyer, K. H. Pape, L. Criegee, W. Gabriel, K. Derikum, Fernando Barreiro, B. Sechi-Zorn, Ch. Gerke, J. M. Scarr, E. Lillestöl, K. Lau, O. Achterberg, Gideon Bella, H. Meyer, C. Y. Chang, B. Lewendel, R. O. Polvado, L. Boesten, D. Schmidt, M. Rost, A. Eskreys, J. Bürger, G. Franke, B. Stella, V. Hepp, Claus Grupen, U. Michelsen, H. Spitzer, M. Rössler, H. Genzel, A. Bäcker, S. Brandt, E. Lehmann, G. Alexander, H. Ackermann, Andris Skuja, H.D. Reich, R. G. Glasser, U. Timm, A. Klovning, W. Zimmermann, R. Grigull, B. Koppitz, Wolfgang Wagner, H. Kapitza, Frank Raupach, H. J. Daum, H.D. Mertiens, G. E. Welch, G. T. Zorn, W. Lührsen, Ch. Berger, W. Lackas, H. J. Meyer, B. Neumann, Volker Blobel, G. Knies, J. A. Skard, G. Zech, R. van Staa, G. G. Winter
Publikováno v:
Physics Letters B. 107:168-172
Using data taken at PETRA we present results on deep inelastic electron photon scattering at momentum transfers 1 Q 2 2 . The results are expressed in terms of the photon structure function F 2 and are compared with QCD predictions and “hadronic”
Autor:
Ch. Berger, H. Genzel, R. Grigull, W. Lackas, F. Raupach, A. Klovning, E. Lillestöl, E. Lillethun, J.A. Skard, H. Ackermann, G. Alexander, F. Barreiro, J. Bürger, L. Criegee, H.C. Dehne, R. Devenish, A. Eskreys, G. Flügge, G. Franke, W. Gabriel, Ch. Gerke, G. Knies, E. Lehmann, H.D. Mertiens, U. Michelsen, K.H. Pape, H.D. Reich, M. Scarr, B. Stella, T.N. Ranga Swamy, U. Timm, W. Wagner, P. Waloschek, G.G. Winter, W. Zimmermann, O. Achterberg, V. Blobel, L. Boesten, V. Hepp, H. Kapitza, B. Koppitz, B. Lewendel, W. Lührsen, R. van Staa, H. Spitzer, C.Y. Chang, R.G. Glasser, R.G. Kellogg, K.H. Lau, R.O. Polvado, B. Sechi-Zorn, A. Skuja, G. Welch, G.T. Zorn, A. Bäcker, S. Brandt, K. Derikum, A. Diekmann, C. Grupen, H.J. Meyer, B. Neumann, M. Rost, G. Zech, T. Azemoon, H.J. Daum, H. Meyer, M. Rössler, D. Schmidt, K. Wacker
Publikováno v:
Physics Letters B. 94:87-90
The differential cross section for the reaction e + e − → γγ has been measured in the CMS energy range between 9.4 and 31.6 GeV. The results are found to be in agreement with the predictions of quantum electrodynamics up to momentum transfers-