'See the following pages for the list of authors. OCR Output
(To be submitted to Nucl. Instr. Meth. A)
described.
electrons, muons, neutrinos (from missing energy), charged hadrons, ·rr°’s and V°’s is
of the detector is its ability to identify particles; the performance in identification of
hadrons, and the accuracy obtained in energy and angle is given. An essential property
of charged tracks is specified. Calorimeters are used to measure photons and neutral
accuracy of the tracking detectors to measure the impact parameter and momentum
The performance of the ALEPH detector at the LEP e+e‘ collider is reviewed. The
Abstract
The ALEPH Collaboration"
Performance of the ALEPH detector at LEP
CERN—PPE-94-170
1 Neeeeeeee eeee
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CERN—PPE/94—170
EUROPEAN ORGANIZATION FOR NUCLEAR RESEARCH
i
6Now at Max-Planck-Institut fur Kernphysik, 6900 Heidelberg, Germany. OCR Output
5Now at Johannes-Gutenberg University, 6500 Mainz, Germany.
1Now at University of Birmingham, Birmingham B15 2TT, U.K.
3Now at Le Croy, 1217 Geneva, Switzerland.
°Now at Humboldt Universitz, 10115 Berlin, Germany.
1Now at ETH, 5232 Villingen, Switzerland.
Now at University at Chicago, Chicago IL 60680, U.S.A.
9Now at DESY, 22603 Hamburg, Germany.
Now at FNAL, Batavia IL 60510, U.S.A.
Now at SSC Laboratory, Dallas TX 75237, U.S.A.
6Now at University of Oregon, U.S.A.
Now at SLAC, Stanford CA 94309, U.S.A.
°Now at LBL, Berkeley CA 94720, U.S.A.
3Now at CALTECH, Pasadena CA 91125, U.S.A.
Now at Harvard University, Cambridge MA02138, U.S.A.
1Now at Columbia University, New York NY10027, U.S.A.
°Now at Rheinische Friedrich-Wilhelms-Universitat Bonn, 5300 Bonn 1, Germany.
Now at SLAC, Stanford, CA 94309, U.S.A.
Permanent address: Universitat de Barcelona, 08208 Barcelona, Spain.
?Also at Istituto di Matematica e Fisica, Universita di Sassari, Sassari, Italy.
6Partially supported by Colciencias, Colombia.
5Now at University of Pittsburgh, Pittsburgh, PA 15260, U.S.A.
4Now at Rutgers University, Piscataway, NJ 08854, USA.
Now at Universita di Pavia, Pavia, Italy.
2Supported by the US Department of Energy, grant DE-FG03—92ER40689.
lAlso at CERN, PPE Division, 1211 Geneva 23, Switzerland.
°Now at Dipartimento di Fisica, Universita di Milano, Milano, Italy.
9Permanent address: Kangnung National University, Kangnung, Korea.
8Supported by Fonds zur Forderung der wissenschaftlichen Forschung, Austria.
Supported by the Direction des Sciences de la Matiére, C.E.A.
°Supported by the Bundesministerium fiir Forschung und Technologie, Fed. Rep. of Germany.
5Present address: Lion Valley Vineyards, Cornelius, Oregon, U.S.A.
4Supp0rted by the US Department of Energy, contract DE-FC05-85ER250000.
3Supported by the US Department of Energy, contract DE-FG05-92ER40742.
2On leave from Universitat Autonoma de Barcelona, Barcelona, Spain.
lSupported by the US Department of Energy, contract DE-AC02-76ER00881.
°Supported by the UK Science and Engineering Research Council.
9Supported by the Danish Natural Science Research Council.
BSupported by the National Science Foundation ofCl1ina.
7Supported by CICYT, Spain.
°Now at Parallax Solutions Limited, Univ. of Warwick Science Park, Coventry, CV4 7EZ, U.K.
5Also Istituto di Cosmo-Geofisica del C.N.R., Torino, Italy.
°A]so Istituto di F isica Generale, Universita di Torino, Torino, Italy.
3'Now at Harvard University, Cambridge, MA 02138, U.S.A.
Deceased.
1Now at CERN, 1211 Geneva 23, Switzerland.
Department of Physics, University of Wisconsin, Madison, WI 53706, USA OCR Output
F.V. Weber,1 E. Wicklund,38 Sau Lan Wu, X. Wu, J.M. Yamartino, M. Zheng, G. Zobernig
Y. Saadi, M. Schmitt, I. Scott, V. Sharma, D. Strom,M. Takashima,J.D. Turk, A.M. Walsh,
36
37
Y.S. Gao, J. Grahl, J.L. Harton, O.J. Hayes, H. Hu, R.C. Jared,34 D. Muller,35 J.M. Nachtman, Y.B. Pan,
L. Bellantoni, A. Caldwell,31 D. Cinabro,32 J.S. C0nway,24 D.F. Cowen,33 Z. Feng, D.P.S. Ferguson,
Experimental Elementary Particle Physics, University of Washington, WA 98195 Seattle, U.S.A.
J. Rothberg, S. Wasserbaech
Dipartimento di Fisica, Université di Trieste e INFN Sezione di Trieste, 34127 Trieste, Italy
L. Bosisio, R. Della Marina, G. Giannini, B. Gobbo, L. Pitis, F. Ragusaz
Fachbereich Physik, Universitat Siegen, 57068 Siegen, Fed. Rep. ofGermany1
F. Rivera,26 P. Saraiva, U. Schafer, L. Smolik
A. Bohrer, S. Brandt, G. Cowan, E. Feigl, G. Gillessen, C. Grupen, G. Lutters, J. Minguet—Rodriguez,
Department of Physics, University ofSheHield, Sheffield S3 7RH, United Kingdom]
A. Beddall, C.N. Booth, S. Cartwright, F. Combley, I. Dawson, A. Koksal, C. Rankin, L.F. Thompson
Institute for Particle Physics, University of California at Santa Cruz, Santa Cruz, CA 95064, USA2
R.P. Johnson, A.M. Litke, G. Taylor, J. Wear
CEA, DAPNIA/Service de Physique des Particules, CE-Saclay, 91191 Giiisur- Yvette Cedex, Francel
J.-P. Schuller, J. Schwindling, D. Si Mohand, B. Vallage
J.C. Lottin, P. Micolon, J. Pascual, P. Perez, J. Rander, J .·F. Renardy, A. Rosowsky, A. Roussarie,
L. Gosset, J. Heitzmann, M. Jacquemet, A. Joudon, W. Kozanecki, E. Langon, M.C. Lemaire, E. Locci,
D. Bederede, R. Bernard, E. Beuville, B. Bloch-Devaux, P. Colas, H. Desportes, H. Duarte, S. Emery,
Kingdoml
Particle Physics Dept., Rutherford Appleton Laboratory, Chilton, Didcot, Oxon OX11 OQX, United
J.C. Thompson, A.W. Tucker
V. Bertin, J. Bizzell, D.R. Botterill, R.W. Cliift, T.R. Edgecock, S. Haywood, M. Edwards, P.R. Norton,
OEX, United Kingdoml
Department of Physics, Royal Holloway &: Bedford New College, University of London, Surrey TVV 20
I.S. Quazi, J.A. Strong
A.P. Betteridge, Y. Gao, M.G. Green, B.J. Green, D.L. Johnson, P.V. March, T. Medcalf, Ll.M. Mir,
Italy
Dipartimento di Fisica dell’Universita, INFN Sezione di Pisa, e Scuola Normale Superiore, 56010 Pisa,
P. Spagnolo, J. Steinberger, R. Tenchini,21 G. Tonelli,27 G. Triggiani, C. Vannini, P.G. Verdini, J. Walsh
A. Lusiani, P.S. Marrocchesi, A. Messineo, G. Pagani, G. Pierazzini, A. Profeti, G. Rizzo, G. Sanguinetti,
I. Ferrante, F. Fidecaro, F. Forti, A. Giassi, M.A. Giorgi, A. Gregorio, F. Ligabue, R. Lorenzini,
C. Bradaschia, G. Calderini, M. Carpinelli, C. Cerri, M.A. Ciocci, V. Ciulli, R. Dell’Orso, R. Fantechi,
D. Abbaneo, C. Avanzini, G. Bagliesi, G. Batignani, A. Bechini, F. Bosi, U. Bottigli, C. Bozzi,
France OCR Output
Laboratoire de l’Accélérateur Linéaire, Université de Paris-Sud, INQPS-CNRS, 91405 Orsay Cedex,
I. Videau
F. Le Diberder, J. Lefrancois, A.-M. Lutz, G. Musolino, H.J. Park, J.—P. Richer, M.—H. Schune, J.-J.Veillet,
M. Davier, M. Dialinas, A. Ducorps, L. Duflot, J.-F. Grivaz, Ph. Heusse, P. Janot, Ph. Jean, D.W. Kim}9
J.-N. Albert, R. Alemany, C. Arnault, R. Bernier, J. Boucrot, O. Callot, R. Chase, A. Cordier,
Max-Planck-Institut fiir Physik, Werner-Heisenberg-Institut, 80805 Miinchen, Fed. Rep. ofGermany1
P. Weissbach, G. Wolf
R. Settles, H. Seywerd, H. Stieg, U. Stiegler, U. Stierlin,2 R. St. Denis, L. Striider, G. Waltermann,
H. Kroha, J. Lauber, G. Liitjens, G. Lutz, W. Manner, H.-G. Moser, R. Richter, J. Schroder, A.S. Schwarz,
B. Dehning, H. Dietl, F. Dydak,2l H. Fischer, A.W. Halley, D. Hauff, P. Holl, K. Jakobs, W. Kothhuber,
I. Abt, K. Ackermann, S. Adlung, R. Assmann, C. Bauer, H. Becker, W. Blum, D. Brown, P. Cattaneo,2
France
Centre de Physique des Particules, Faculté des Sciences de Luminy, INQP3—CNR.S, 13288 Marseille,
Y. Gally. D. Nicod, P. Payre, L. Roos, D. Rousseau, P. Schwemling, M. Talby
A.M. Bencheikh, C. Benchouk, M. Billaut, A. Bonissent, D. Calvet, J. Carr, C. Diaconu, F. Etienne,
Institut fzir Physik, Universitat Mainz, 55099 Mainz, Fed. Rep. of Germanyl
S.M. Walther, R. Wanke, B. Wolf
L.A.T. Bauerdick,39 A. Gal1a,A.M. Greene, K. Kleinknecht, J. Raab, B. Renk, H.-G. Sander, H. Schmidt,
Department of Physics, University of Lancaster, Lancaster LA1 4YB, United Kingdoml
A. Patel, T. Sloan, S.W. Snow, E.P. Whelan
C.K. Bowdery, T.J. Brodbeck, A.J. Finch, F. Foster, G. Hughes, D. Jackson, N.R. Keemer, M. Nuttall,
Institut fair Experimentalphysik, Universitat Innsbruck, 6020 Innsbruck, Austrial
P. Girtler, D. Kuhn, G. Rudolph, R. Vogl
Department of Physics, Imperial College, London SW7 2BZ, United Kingdoml
G. San Martin, J.K. Sedgbeer, A.G. Wright
J.F. Hassard, N. Konstantinidis, D.G. Miller, L. Moneta, A. Moutoussi, J. Nash, D.G. Payne, D.R. Price,
G.J. Barber, R. Beuselinck, D.M. Binnie, W. Cameron, M. Cattaneo, D.J. Colling, D.N. Gentry,
Institut fiir Hochenergiephysik, Universitat Heidelberg, 69120 Heidelberg, Fed. Rep. ofGermany1
H. Stenzel, K. Tittel, M. Wunsch
J. Krause, Y. Maumary,1 M. Panter,46 A. Putzer,21 B. Rensch, M. Schmidt, K. Schmitt, A. Stahl,3
U. Becker, B. Brandl, O. Braun, R. Geiges,45 C. Geweniger, P. Hanke, V. Hepp, W. Heyde,2 E.E. Kluge,
Department of Physics and Astronomy, University of Glasgow, Glasgow G12 8QQ, United Kingdoml
J.M. Scarr, K. Smith, M.G. Smith, A.S. Thompson, S. Thorn, R.M. Turnbull
P. Colrain, I. ten Have, I.G. Knowles, J.G. Lynch, W. Maitland, W.T. Morton, C. Raine, P. Reeves,
Laboratori Nazionali dell ’INF N (LNF -INF N), 00044 Frascati, Italy
F. Murtas, G.P. Murtas, M. Pepe-Altarelli, P. Picchi, S. Salomone, M. Santoni
M. Carletti, F. Cerutti, V. Chiarella, G. Corradi, B. Dulach, G. Felici, P. Laurelli, G. Mannocchi,
M. Anelli, A. Antonelli, A. Balla, G. Bencivenni, G. Bologna,4 R. Bonini, F. Bossi, P. Campana, G. Capon,
4052, USA mt
Supercomputer Computations Research Institute, Florida State University, Tallahassee, FL 32306
M. Corden, M. Delfino,12 C. Georgiopoulos, D.E. Jaffe, D. Levinthall
Dipartimento di Fisica, Universita di Firenze, INFN Sezione di Firenze, 50125 Firenze, Italy
E. Focardi, G. Parrini, E. Scarlini
Department of Physics, University of Edinburgh, Edinburgh EH9 3JZ, United Kingdoml OCR Output
D.J. Candlin, A.J. Main, M.I. Parsons, E. Veitch
Palaiseau Cedex, France
Laboratoire de Physique Nucléaire et des Hautes Energies, Ecole Polytechnique, INQP3-CNRS, 91128
P. Poilleux, A. Rougé, C. Roy, M. Rumpf, R. Tanaka, A. Valassi, M. Verderi, H. Videau, C. Violet
J. Doublet, G. Fouque, C. Lemoine, P. Matricon, M. Maubras, R. Morano, J.-Y. Parey, L. Passalacqua,
M. Bercher, U. Berthon, A. Blondel, G. Bonneaud, J.C. Brient, P. Bourdon, A. Busata, M. Cerutti,
Nuclear Research Center Demokritos (NRCD), Athens, Greece
A. Kyriakis, E. Simopoulou, I. Siotis, A. Vayaki, K. Zachariadou
Niels Bohr Institute, 2100 Copenhagen, Denmarkg
A. Lindahl, B. Madsen, R. Mellerud, B.S. Nilsson, G. Petersen
H. Bertelsen, T. Fearnley, F. Hansen, J.B. Hansen, J.D. Hansen, J.R. Hansen, P.H. Hansen, S.D. Johnson,
63177 Aubiére, France
Laboratoire de Physique Corpusculaire, Université Blaise Pascal, INQP3-CNRS, C1ermont·Ferrand,
F. Podlyski, J. Proriol, F. Saadi
A. Falvard, P. Gay, C. Guicheney, P. Henrard, J. Jousset, B. Michel, J—C. Montret, D. Pallin, P. Perret,
Z. Ajaltouni, M. Bardadin-Otwinowska, A. Barres, C. Boyer, M. Brossard, R. Chadelas, F. Daudon,
European Laboratory for Particle Physics (CERN), 1211 Geneva 23, Switzerland
W. Wiedenmanri, T. Wildish, W. Witzeling, J. Wotschack
W. Tejessy, I.R. Tomalin, R. Veenhof, A. Venturi, H. Verweij, H. Wachsmuth, H. Wahl, S. Wheeler,4
Ruden, M. Saich,6 J.—C. Santiard, P. Schilly, D. Schlatter, M. Schmelling, G. Stefanini, H. Taureg,
J.~F. Pusztaszeri, F. Ranjard, J. Richstein,43 W. Richter, L. Rolandi, H. Rotscheidt, W. von
A. Miotto, R. Miquel, P. Palazzi, J.R. Pater, P. Perrodo, R. Pintus, L. Pregernig, M. Price,
C. Markou, E.B. Martin, P. Mato,,J.-M. Maugain, J. May, H. Meinhard, V. Mertens,1 A. Minten,
A. Lacourt, P. Lazeyras, I. Lehraus, B. Lofstedt, T. Lohse,42 D. Liitze,3° M. Maggi, A. Marchioro,
J. Harvey, B. Ivesdal, R. Jacobsen, P. Jarron, B. Jost, M. Kasemann,39 G. Kellner, J. Knobloch,
G. Ganis, C. Gay,3 R. Geiges, M. Girone, C. Graab,41 R. Grabit, J. Griffith, R. Grub, R. Hagelberg,
P. Comas, P. Coyle, H. Drevermann, A. Engelhardt, M. Ferro—Luzzi, L. Foa, R.W. Forty, M. Frank,
H. Albrecht,39 A. Ball, R. Benetta, F. Bird,37 E. Blucher,4° G. Bonvicini, J. Boudreau,25 T. Charity,
Institute of High-Energy Physics, Academia Sinica, Beijing, The People’s Republic of Chinag
Y. Chai, D. Huang, X. Huang, J. Lin, T. Wang, Y. Xie, D. Xu, R. Xu, J. Zhang, L. Zhang, W. Zhao
Dipartimento di Fisica, INFN Sezione di Bari, 70126 Bari, Italy
F. Romano, F. Ruggieri, G. Selvaggi, L. Silvestris, P. Tempesta, G. Zito
N. Marinelli, A. Mastrogiacomo, S. Natali, V. Negro, S. Nuzzo, M. Papagni, C. Pinto, A. Ranieri, G. Raso,
F. Chiumarulo, A. Clemente, D. Creanza, M. de Palma, A. Farilla, R. Ferorelli, G. Iaselli, G. Maggi,
Spain
Institut de F isica d ’Altes Energies, Universitat Autonoma de Barcelona, 08193 Bellaterra (Barcelona),
A. Pascual, J.A. Perlas, F. Sanchez F. Teubert,
V, Gaitan, Ll. Garrido,2'3 M. Martinez, T. Mattis0n,29 S. Orteu, A. Pacheco, C. Padilla, F. Palla,
F. Ai·iztizabal,.__M. Chmeissani, J .M. Crespo, I. Efthymiopoulos, E. Fernandez, M. Fernandez-Bosman,
Laboratoire de Physique des Particules (LAPP), INQP3-CNRS, 74019 Annecy-le—Vieux Cedex, France
B. Pietrzyk
D. Buskulic, D. Casper, I. De Bonis, D. Decamp, P. Ghez, C. Goy, J.—P. Lees, M.—N. Minard, P. Odier,
The ALEPH Collaboration