Properties of multihadronic events with a final state photon at $$\sqrt s = M_{Z^0 } $$

A. Michelini, H. E. Stier, P. Igo-Kemenes, U. Binder, P. Schenk, P. Scharff-Hansen, R. P. Middleton, Michael Dittmar, R. Kowalewski, Stephen Lloyd, G. T. Zorn, R. J. Hemingway, Claude Leroy, M. S. Dixit, J. P. Martin, M. Yurko, J. Hart, P. Mättig, R. K. Carnegie, S. Rossberg, Paul Kyberd, W. G. Scott, H. J. Burckhart, M. Settles, Claudio Grandi, D. Pitman, Kiyotomo Kawagoe, Gideon Bella, M. J. Goodrick, G. W. Wilson, A. Astbury, Wolfram Dietrich Zeuner, Harold Nguyen, J. Becker, S. R. Hou, M. J. Losty, P. W. Jeffreys, G. J. Van Dalen, W. Gorn, W. R. Gibson, X. C. Lou, I. Zacharov, F. Lamarche, A. A. Carter, I. Wingerter, Takehiko Mori, D. C. Imrie, S. Levegrün, J. M. Roney, B. Nellen, Marcello Mannelli, B. C. Shen, C. J. Oram, N. I. Goddes, G. Maringer, B. Poli, P. Weber, D. E. Plane, M. Couch, A. Beck, G. M. Dallavalle, Shlomo Dado, Alessandro Montanari, J. Kroll, J. F. Kral, A. Rollnik, Giora Mikenberg, O. Ganel, P. Berlich, A. Jawahery, R. Van Kooten, W. Mohr, R. Mir, Marco Cuffiani, A. M. Rossi, P. Leblanc, M. F. Turner, A. J. Martin, A. M. Lee, James Letts, R. Yaari, H. Jeremie, K. Stephens, D. Strom, S. Orito, M. H. Lehto, M. Cooper, S. Weisz, F. X. Gentit, P. Poffenberger, Misao Sasaki, K. Riles, Peter R Hobson, P. F. Harrison, T. Kawamoto, I. J. Bloodworth, R. J. Barlow, L. Köpke, H. M. Fischer, B. W. Kennedy, J. von Krogh, S. W. O'Neale, T. P. Kokott, K. W. Bell, H. Kreutzmann, M. Hansroul, M. M. Deninno, C. P. Howarth, John Baines, Margret Fincke-Keeler, J. Gascon, P. Taras, Dave Robinson, P. Paschievici, B. Lorazo, J. C. Hill, Fabrizio Fabbri, Daniel Lellouch, R. Humbert, Alexander Wagner, D. Menszner, G. Giacomelli, B. Boden, J. R. Carter, R. D. Heuer, Rene Brun, F. Odorici, P. Debu, G. Transtromer, P. Teixeira-Dias, J. R. McNutt, P. D. Acton, R. M. Brown, D. R. Rust, Tohru Takeshita, G. N. Patrick, R. Ströhmer, D. R. Ward, T. W. Pritchard, Stephen Hillier, J. D. Gillies, G. A. Bahan, A. M. Smith, M. Ogg, G. Duckeck, John Hobbs, Y. Yang, S. Bethke, G. Vasseur, F. K. Loebinger, Austin Ball, D. Van den plas, V. H. Winterer, Silvia Arcelli, P. E.L. Clarke, C. P. Ward, J. Mildenberger, S. Wotton, L. A. del Pozo, R. G. Kellogg, M. Jimack, T. Mouthuy, Otmar Biebel, E. Ros, M. A. Whalley, D. G. Charlton, K. J. Anderson, P. S. Wells, Lorne Levinson, A. T. Watson, Claus Kleinwort, M. Kuwano, T. Kobayashi, P. Bock, S. J. Pawley, U. Maur, A. Dieckmann, H. Oh, John Allison, R. K. Keeler, C. Fukunaga, D. J. Miller, R. W. L. Jones, C. J. Virtue, G. Yekutieli, J. P. Walker, M. J. Oreglia, G. A. Snow, B. P. O'Neill, P. Le Du, M. Hauschild, S. Bougerolle, P. Singh, E. Heflin, H. Takeda, Sachio Komamiya, Gideon Alexander, B. Panzer-Steindel, H. Przysiezniak, F. S. Merritt, C. Y. Chang, G. Tysarczyk-Niemeyer, C. M. Hawkes, P. Jovanovic, G. D. Lafferty, A. Buijs, G. Eckerlin, Terry Richard Wyatt, S. W. Gensler, R. J. Homer, N. C. Wood, J. Goldberg, O. Schaile, B. B. Brabson, D. Hochman, P. A. Elcombe, I. Cohen, O. Runolfsson, P. Ashton, K. Runge, N. K. Watson, W. J. Collins, M. Weymann, Shlomit Tarem, Tetsuro Mashimo, B. Holl, Gareth J. Barker, T. J. McMahon, Jacqueline Batley, T. J. Smith, P. Pfister, H. Mes, C. Ho, M. Jobes, A. Simon, S. A. Robins, H. M. Bosch, N. J. Thackray, Mitsuaki Nozaki, J. Banks, V. Gibson, J. A. Wilson, G. G. Hanson, J. M. Lorah, J. E. Conboy, Georges Azuelos, P. M. Watkins, D. Axen, P. Lennert, Max Weber, J. L. Pinfold, T. Tsukamoto, W. J. Larson, H. von der Schmitt, A. K. Honma, C. Wahl, J. Ludwig, G. P. Siroli, Peter Sherwood, A. Pouladdej, D. E. Klem, J. P. Pansart, T. Behnke, D. G. Fong, M. Coupland, C. Moisan, Randall Sobie, F. C. Grant, J. E. Pilcher, Frans Meijers, M. Sproston, J. Schwiening, Horst Breuker, D. Karlen, S. Schreiber, M. W. Redmond, M. W. Moss, S. De Jong, D. A. Hinshaw, Ehud Duchovni, Andris Skuja, N. Wermes, P. M. Hattersley, P. Routenburg, J. Hagemann, J. A. McKenna, R. F. McGowan, D. L. Rees, J. W. Gary, S. Sanghera, F. G. Oakham, I. P. Duerdoth, H. O. Ogren, R. W. Springer, Erez Etzion, G. Beaudoin, H. Ihssen, W. Schappert, R. Shypit, Stefano Marcellini, C. K. Hargrove, M. Rosvick, G. Quast, Phillip Allport, E.J. Prebys, P. G. Estabrooks, A. Gaidot, A. C. Janissen, D. J.P. Dumas, A. D. Schaile, R. E. Hughes-Jones, J. G. Layter, Paolo Capiluppi, Christoph Geich-Gimbel

doi:10.1007/bf01566648

The properties of final state photons in multihadronic decays of theZ0 and those of the recoiling hadronic system are discussed and compared with theoretical expectations. The yield of two and three jet events with final state photons is found to be in good agreement with the expectation from a matrix element calculation ofO(ααs. Uncertainties in the interpretation of the theoretical calculation do not yet permit a final assessment of events with just one reconstructed jet. Comparing the rates of two jet events with a photon to those of three jet events in the inclusive multihadronic sample, the strong coupling constant in second order is determined asαs$(M_{Z^0 } )$=0.122±0.010, taking into account only the statistical and experimental systematic errors. It is found that an abelian model of the strong interaction does not describe the data. The comparison of the total yield and the jet rates with QCD shower programs shows better agreement with the ARIADNE model than with the JETSET model. Both programs are found to describe well the photon properties and the properties of the residual hadronic event.

Properties of multihadronic events with a final state photon at $$\sqrt s = M_{Z^0 } $$

Search this article

Description

Journal

Related Data

Details 詳細情報について

Export

Report a problem