1. Search for Dirac magnetic monopoles in e+e− collisions with the OPAL detector at LEP2
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G. ABBIENDI, C. AINSLEY, P. F. AKESSON, G. ALEXANDER, G. ANAGNOSTOU, K. J. ANDERSON, S. ASAI, D. AXEN, I. BAILEY, E. BARBERIO, T. BARILLARI, R. J. BARLOW, R. J. BATLEY, P. BECHTLE, T. BEHNKE, K. W. BELL, P. J. BELL, G. BELLA, A. BELLERIVE, G. BENELLI, S. BETHKE, O. BIEBEL, O. BOERIU, P. BOCK, M. BOUTEMEUR, S. BRAIBANT, R. M. BROWN, H. J. BURCKHART, S. CAMPANA, R. K. CARNEGIE, A. A. CARTER, J. R. CARTER, C. Y. CHANG, D. G. CHARLTON, C. CIOCCA, A. CSILLING, S. DADO, A. DE ROECK, E. A. DE WOLF, S, K. DESCH, B. DIENES, J. DUBBERT, E. DUCHOVNI, G. DUCKECK, I. P. DUERDOTH, E. ETZION, F. FABBRI, P. FERRARI, F. FIEDLER, I. FLECK, M. FORD, A. FREY, P. GAGNON, J. W. GARY, C. GEICH GIMBEL, P. GIACOMELLI, M. GIUNTA, J. GOLDBERG, E. GROSS, J. GRUNHAUS, M. GRUW, P. O. GUNTHER, A. GUPTA, C. HAJDU, M. HAMANN, G. G. HANSON, A. HAREL, M. HAUSCHILD, C. M. HAWKES, R. HAWKINGS, R. J. HEMINGWAY, G. HERTEN, R. D. HEUER, J. C. HILL, D. HORVATH, P. IGO KEMENES, K. ISHII, H. JEREMIE, P. JOVANOVIC, T. R. JUNK, J. KANZAKI, D. KARLEN, K. KAWAGOE, T. KAWAMOTO, R. K. KEELER, R. G. KELLOGG, B. W. KENNEDY, S. KLUTH, T. KOBAYASHI, M. KOBEL, S. KOMAMIYA, T. KRAMER, A. KRASZNAHORKAY, P. KRIEGER, J. VON KROGH, T. KUHL, M. KUPPER, G. D. LAFFERTY, H. LANDSMAN, D. LANSKE, D. LELLOUCH, J. LETTSO, L. LEVINSON, J. LILLICH, S. L. LLOYD, F. K. LOEBINGER, J. LU27, A. LUDWIG, J. LUDWIG, W. MADER, S. MARCELLINI, A. J. MARTIN, T. MASHIMO, P. MATTIGM, J. MCKENNA, R. A. MCPHERSON, F. MEIJERS, W. MENGES, F. S. MERRITT, H. MES, N. MEYER, A. MICHELINI, S. MIHARA, G. MIKENBERG, D. J. MILLER, W. MOHR, T. MORI, A. MUTTER, K. NAGAI, I. NAKAMURA, H. NANJO, H. A. NEAL, R. NISIUS, S. W. O’NEALE, A. OH, M. J. OREGLIA, S. ORITO, C. PAHL, G. PASZTOR, J. R. PATER, J. E. PILCHER, J. PINFOLD, D. E. PLANE, O. POOTH, M. PRZYBYCIEN, A. QUADT, K. RABBERTZ, C. REMBSER, P. RENKEL, J. M. RONEY, Y. ROZEN, K. RUNGE, K. SACHS, T. SAEKI, E. K. G. SARKISYAN, A. D. SCHAILE, O. SCHAILE, P. SCHARFF HANSEN, J. SCHIECK, T. SCHORNER SADENIUS, M. SCHRODER, M. SCHUMACHER, R. SEUSTER, T. G. SHEARS, B. C. SHEN, P. SHERWOOD, A. SKUJA, A. M. SMITH, R. SOBIE, S. SOLDNER REMBOLD, F. SPANO, A. STAHL, D. STROM, R. STROHMER, S. TAREM, M. TASEVSKY, R. TEUSCHER, M. A. THOMSON, E. TORRENCE, D. TOYA, P. TRAN, I. TRIGGER, Z. TROCSANYI, E. TSUR, M. F. TURNER WATSON, I. UEDA, B. UJVARI, C. F. VOLLMER, P. VANNEREM, R. VERTESI, M. VERZOCCHI, H. VOSS, J. VOSSEBELD, C. P. WARD, D. R. WARD, P. M. WATKINS, A. T. WATSON, N. K. WATSON, P. S. WELLS, T. WENGLER, N. WERMES, G. W. WILSON1, J. A. WILSON, G. WOLF, T. R. WYATT, S. YAMASHITA, D. ZER ZION, L. ZIVKOVIC, CAPILUPPI, PAOLO, CUFFIANI, MARCO, GIACOMELLI, GIORGIO MARIA, ROSSI, ANTONIO MARIA, G.ABBIENDI, C.AINSLEY, P.F.AKESSON, G.ALEXANDER, G.ANAGNOSTOU, K.J.ANDERSON, S.ASAI, D.AXEN, I.BAILEY, E.BARBERIO, T.BARILLARI, R.J.BARLOW, R.J.BATLEY, P.BECHTLE, T.BEHNKE, K.W.BELL, P.J.BELL, G.BELLA, A.BELLERIVE, G.BENELLI, S.BETHKE, O.BIEBEL, O.BOERIU, P.BOCK, M.BOUTEMEUR, S.BRAIBANT, R.M.BROWN, H.J.BURCKHART, S.CAMPANA, P.CAPILUPPI, R.K.CARNEGIE, A.A.CARTER, J.R.CARTER, C.Y.CHANG, D.G.CHARLTON, C.CIOCCA, A.CSILLING, M.CUFFIANI, S.DADO, A.DE ROECK, E.A.DE WOLF, K.DESCH, B.DIENES, J.DUBBERT, E.DUCHOVNI, G.DUCKECK, I.P.DUERDOTH, E.ETZION, F.FABBRI, P.FERRARI, F.FIEDLER, I.FLECK, M.FORD, A.FREY, P.GAGNON, J.W.GARY, C.GEICH-GIMBEL, G.GIACOMELLI, P.GIACOMELLI, M.GIUNTA, J.GOLDBERG, E.GROSS, J.GRUNHAUS, M.GRUW, P.O.GUNTHER, A.GUPTA, C.HAJDU, M.HAMANN, G.G.HANSON, A.HAREL, M.HAUSCHILD, C.M.HAWKES, R.HAWKINGS, R.J.HEMINGWAY, G.HERTEN, R.D.HEUER, J.C.HILL, D.HORVATH, P. IGO-KEMENES, K. ISHII, H. JEREMIE, P. JOVANOVIC, T.R. JUNK, J.KANZAKI, D.KARLEN, K.KAWAGOE, T.KAWAMOTO, R.K.KEELER, R.G.KELLOGG, B.W.KENNEDY, S.KLUTH, T.KOBAYASHI, M.KOBEL, S.KOMAMIYA, T.KRAMER, A.KRASZNAHORKAY, P.KRIEGER, J. VON KROGH, T.KUHL, M.KUPPER, G.D. LAFFERTY, H. LANDSMAN, D. LANSKE, D. LELLOUCH, J. LETTSO, L. LEVINSON, J. LILLICH, S.L. LLOYD, F.K. LOEBINGER, J. LU27, A. LUDWIG, J. LUDWIG, W.MADER, S.MARCELLINI, A.J.MARTIN, T.MASHIMO, P.MATTIGM, J.MCKENNA, R.A.MCPHERSON, F.MEIJERS, W.MENGES, F.S.MERRITT, H.MES, N.MEYER, A.MICHELINI, S.MIHARA, G.MIKENBERG, D.J.MILLER, W.MOHR, T.MORI, A.MUTTER, K.NAGAI, I.NAKAMURA, H.NANJO, H.A.NEAL, R.NISIUS, S.W.O’NEALE, A.OH, M.J.OREGLIA, S.ORITO, C.PAHL, G.PASZTOR, J.R.PATER, J.E.PILCHER, J.PINFOLD, D.E.PLANE, O.POOTH, M.PRZYBYCIEN, A.QUADT, K.RABBERTZ, C.REMBSER, P.RENKEL, J.M.RONEY, A.M.ROSSI, Y.ROZEN, K.RUNGE, K. SACHS, T. SAEKI, E.K.G. SARKISYAN, A.D. SCHAILE, O. SCHAILE, P. SCHARFF-HANSEN, J. SCHIECK, T. SCHORNER-SADENIUS, M. SCHRODER, M. SCHUMACHER, R. SEUSTER, T.G. SHEARS, B.C. SHEN, P. SHERWOOD, A. SKUJA, A.M. SMITH, R. SOBIE, S. SOLDNER-REMBOLD, F. SPANO, A. STAHL, D. STROM, R. STROHMER, S.TAREM, M.TASEVSKY, R.TEUSCHER, M.A.THOMSON, E.TORRENCE, D.TOYA, P.TRAN, I.TRIGGER, Z.TROCSANYI, E.TSUR, M.F.TURNER-WATSON, I.UEDA, B.UJVARI, C.F.VOLLMER, P.VANNEREM, R.VERTESI, M.VERZOCCHI, H.VOSS, J.VOSSEBELD, C.P.WARD, D.R.WARD, P.M.WATKINS, A.T.WATSON, N.K.WATSON, P.S.WELLS, T.WENGLER, N.WERMES, G.W.WILSON1, J.A.WILSON, G.WOLF, T.R.WYATT, S.YAMASHITA, D. ZER-ZION, and L. ZIVKOVIC
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High Energy Physics - Experiment (hep-ex) ,FOS: Physical sciences ,High Energy Physics::Experiment ,Particle Physics - Experiment ,High Energy Physics - Experiment - Abstract
This letter describes a direct search for pair produced magnetic monopoles in e+e- collisions. The analysis is based on 62.7 pb^-1 of data collected with the OPAL detector at an average centre-of-mass energy of sqrt(s)= 206.3GeV. The monopole signal was assumed to be characterized by two back-to-back particles with an anomalously high ionization energy loss de/dx in the tracking chambers. No evidence for production of monopoles was observed. Upper limits were obtained on the magnetic monopole pair-production cross-section (sigma) in the mass range 45 GeV/c^2, Comment: 13 pages, 3 figures, Submitted to Phys. Letts. B
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