Content area
Abstract
The process e+e− →, γγ(γ) is studied using data recorded with the OPAL detector at LEP. The data sample corresponds to a total integrated luminosity of 25.38 pb−1 taken at centre-of-mass energies of 130–172 GeV. The measured cross-sections agree well with the expectation from QED. In a combined fit using data from all centre-of-mass energies, the angular distribution is used to obtain improved limits on the cut-off parameters: Λ+ > 195 GeV and Λ− > 210 GeV (95% CL). In addition, limits on nonstandard e+e−γ couplings and contact interactions, as well as a 95% CL mass limit for an excited electron,Me*= > 194 GeV for an e+e−γ coupling κ = 1, are determined.
Details
Title
Multi-photon final states in e+e− collisions at ∝s =130-172 GeV
Author
Ackerstaff, K 1 ; Alexander, G 2 ; Allison, J 3 ; Altekamp, N 4 ; Anderson, K J 5 ; Anderson, S 6 ; Arcelli, S 7 ; Asai, S 8 ; Axen, D; Azuelos, G 9 ; Ball, A H 10 ; Barberio, E 1 ; Barlow, R J 3 ; Bartoldus, R 11 ; Batley, J R 4 ; Baumann, S 11 ; Bechtluft, J 12 ; Beeston, C 3 ; Behnke, T 1 ; Bell, A N 13 ; Bella, K W 14 ; Bella, G 2 ; Bentvelsen, S 1 ; Bethke, S 12 ; Biebel, O 12 ; Biguzzi, A 4 ; Bird, S D 3 ; Blobel, V 15 ; Bloodworth, I J 13 ; Bloomer, J E 13 ; Bobinskilo, M 16 ; Bock, P 17 ; Bonacorsi, D 7 ; Boutemeur, M 18 ; Bouwens, B T 6 ; Braibant, S 6 ; Brigliadori, L 7 ; Brown, R M 14 ; Burckhart, H J 1 ; Burgard, C 1 ; Biirgin, R 16 ; Capiluppi, P 7 ; Carnegie, R K 19 ; Carter, A A 20 ; Carter, J R 4 ; Chang, C Y 10 ; Charlton, D G 21 ; Chrisman, D 22 ; Clarke, P E L 23 ; Cohen, I 2 ; Conboy, J E 23 ; Cooke, O C 1 ; Cuffiani, M 7 ; Dado, S 24 ; Dallapiccola, C 10 ; Dallavalle, G M 7 ; Davis, R 25 ; De Jong, S 6 ; del Pozo, L A 22 ; Desch, K 11 ; Dienes, B 26 ; Dixit, M S 27 ; E do Couto e Silva 6 ; Doucet, M 28 ; Duchovni, E 29 ; Duckeck, G 18 ; Duerdoth, I P 3 ; Eatough, D 3 ; Edwards, J E G 3 ; Estabrooks, P G 19 ; Evans, H G 5 ; Evans, M 20 ; Fabbri, F 7 ; Fanti, M 7 ; Faust, A A 25 ; Fiedler, F 15 ; Fierro, M 7 ; Fischer, H M 11 ; Fleck, I 1 ; Folman, R 29 ; Fong, D G 10 ; Foucher, M 10 ; Fürtjes, A 1 ; Futyan, D I 3 ; Gagnon, P 27 ; Gary, J W 22 ; Gascon, J 28 ; Gascon-Shotkin, S M 10 ; Geddes, N I 14 ; Geich-Gimbel, C 11 ; Geralis, T 14 ; Giacomelli, G 7 ; Giacomelli, P 22 ; Giacomelli, R 7 ; Gibson, V 4 ; Gibson, W R 4 ; Gingrich, D M 30 ; Glenzinski, D 5 ; Goldberg, J 24 ; Goodrick, M J 4 ; Gorn, W 22 ; Grandi, C 7 ; Gross, E 29 ; Grunhaus, J 2 ; Gruwé, M 1 ; Hajdu, C 31 ; Hanson, G G 6 ; Hansroul, M 1 ; Hapke, M 20 ; Hargrove, C K 27 ; Hart, P A 5 ; Hartmann, C 11 ; Hauschild, M 1 ; Hawkes, C M 4 ; Hawkings, R 15 ; Hemingway, R J 19 ; Herndon, M 10 ; Herten, G 16 ; Heuer, R D 1 ; Hildreth, M D 1 ; Hill, J C 4 ; Hillier, S J 13 ; Hobson, P R 32 ; Homer, R J 13 ; Honma, A K 33 ; Horvath, D 34 ; Hossain, K R 25 ; Howard, R 35 ; Hüntemeyer, P 15 ; Hutchcroft, D E 4 ; Igo-Kemenes, P 17 ; Imrie, D C 32 ; Ingram, M R 3 ; Ishii, K 8 ; Jawahery, A 10 ; Jeffreys, P W 14 ; Jeremie, H 28 ; Jimack, M 13 ; Joly, A 28 ; Jones, C R 4 ; Jones, G 3 ; Jones, M 19 ; Jost, U 17 ; Jovanovic, P 13 ; Junk, T R 1 ; Karlen, D 19 ; Kartvelishvili, V 3 ; Kawagoe, K 8 ; Kawamoto, T 8 ; Kayal, P I 25 ; Keeler, R K 36 ; Kellogg, R G 10 ; Kennedy, B W 14 ; Kirk, J 35 ; Klier, A 29 ; Kluth, S 1 ; Kobayashi, T 8 ; Kobello, M 16 ; Koetke, D S 19 ; Kokott, T P 11 ; Kolrep, M 16 ; Komamiya, S 8 ; Kress, T 17 ; Krieger, P 19 ; J von Krogh 17 ; Kyberd, P 20 ; Lafferty, G D 3 ; Lahmann, R 10 ; Lai, W P 37 ; Lanske, D 12 ; Lauber, J 23 ; Lautenschlager, S R 38 ; Layter, J G 22 ; Lazic, D 24 ; Lee, A M 38 ; Lefebvre, E 28 ; Lellouch, D 29 ; Letts, J 6 ; Levinson, L 29 ; Lloyd, S L 20 ; Loebinger, F K 3 ; Long, G D 36 ; Losty, M J 27 ; Ludwig, J 16 ; Macchiolo, A 7 ; Macpherson, A 25 ; Mannelli, M 1 ; Marcellini, S 7 ; Markus, C 11 ; Martin, A J 20 ; Martin, J P 28 ; Martinez, G 10 ; Mashimo, T 8 ; Mättig, P 11 ; McDonald, W J 25 ; McKenna, J 35 ; Mckigney, E A 23 ; McMahon, T J 13 ; McPherson, R A 1 ; Meijers, F 1 ; Menke, S 11 ; Merritt, F S 5 ; Mes, H 27 ; Meyer, J 15 ; Michelini, A 7 ; Mikenberg, G 29 ; Miller, D J 23 ; Mincer, A 39 ; Mir, R 29 ; Mohr, W 16 ; Montanari, A 7 ; Mori, T 8 ; Morii, M 8 ; Müller, U 11 ; Mihara, S 8 ; Nagai, K 29 ; Nakamura, I 8 ; Neal, H A 1 ; Nellen, B 11 ; Nisius, R 1 ; O'Neale, S W 13 ; Oakham, F G 27 ; Odorici, F 7 ; Ogren, H O 6 ; A Oh 15 ; Oldershaw, N J 3 ; Oreglia, M J 5 ; Orito, S 8 ; Palinkas, J 26 ; Pasztor, G 31 ; Pater, J R 3 ; Patriek, G N 14 ; Patt, J 16 ; Pearce, M J 13 ; Perez-Ochoa, R 1 ; Petzold, S 15 ; Pfeifenschneider, P 12 ; Pilcher, J E 5 ; Pinfold, J 25 ; Plane, D E 1 ; Poffenberger, P 36 ; Poli, B 7 ; Posthaus, A 11 ; Rees, D L 13 ; Rigby, D 13 ; Robertson, S 36 ; Robins, S A 24 ; Rodning, N 25 ; Roney, J M 36 ; Rooke, A 23 ; Ros, E 1 ; Rossi, A M 7 ; Routenburg, P 25 ; Rozen, Y 24 ; Runge, K 16 ; Runolfsson, O 1 ; Ruppel, U 12 ; Rust, D R 6 ; Rylko, R 32 ; Sachs, K 16 ; Saeki, T 8 ; Sarkisyan, E K G 2 ; Sbarra, C 35 ; Schaile, A D 18 ; Schaile, O 18 ; Scharf, F 11 ; Scharff-Hansen, P 1 ; Schenk, P 18 ; Schieck, J 17 ; Schleper, P 17 ; Schmitt, B 1 ; Schmitt, S 17 ; Schöning, A 1 ; Schröder, M 1 ; Schultz-Coulon, H C 16 ; Schumacher, M 11 ; Schwick, C 1 ; Scott, W G 14 ; Shears, T G 3 ; Shen, B C 22 ; Shepherd-Themistocleous, C H 1 ; Sherwood, P 23 ; Siroli, G P 7 ; Sittler, A 15 ; Skillman, A 23 ; Skuja, A 10 ; Smith, A M 1 ; Snow, G A 10 ; Sobie, R 36 ; Söldner-Rembold, S 16 ; Springer, R W 25 ; Sproston, M 14 ; Stephens, K 3 ; Steuerer, J 15 ; Stockhausen, B 11 ; Stoll, K 16 ; Strom, D 37 ; Szymanski, P 14 ; Tafirout, R 28 ; Talbot, S D 13 ; Tanaka, S 8 ; Taras, P 28 ; Tarem, S 24 ; Teuscher, R 1 ; Thiergen, M 16 ; Thomson, M A 4 ; E von Törne 11 ; Towers, S 19 ; Trigger, I 28 ; Trócsányi, Z 40 ; Tsur, E 2 ; Turcot, A S 5 ; Turner-Watson, M F 1 ; Utzat, P 17 ; R Van Kooten 6 ; Verzocchi, M 16 ; Vikas, P 28 ; Vokurka, E H 3 ; Voss, H 11 ; Wackerle, F 16 ; Wagner, A 15 ; Wards, C P 4 ; Wards, D R 4 ; Watkins, P M 13 ; Watson, A T 13 ; Watson, N K 13 ; Wells, P S 1 ; Wermes, N 11 ; White, J S 36 ; Wilkens, B 16 ; Wilson, G W 15 ; Wilson, J A 13 ; Wolf, G 29 ; Wyatt, T R 3 ; Yamashita, S 8 ; Yekutieli, G 29 ; Zacek, V 28 ; Zer-Zion, D 1
1 CERN, European Organisation for Particle Physics, Geneva 23, Switzerland
2 Department of Physics and Astronomy, Tel Aviv University, Tel Aviv, Israel
3 Department of Physics, Schuster Laboratory, The University, Manchester, UK
4 Cavendish Laboratory, Cambridge, UK
5 Enrico Fermi Institute and Department of Physics, University of Chicago, Chicago, IL, USA
6 Department of Physics, Indiana University, Bloomington, IN, USA
7 Dipartimento di Fisica dell' Università di Bologna and INFN, Bologna, Italy
8 International Centre for Elementary Particle Physics and Department of Physics, University of Tokyo, Tokyo, Japan
9 Laboratoire de Physique Nucléaire, Université de Montréal, Montréal, Quebec, Canada; TRIUMF, Vancouver, Canada
10 Department of Physics, University of Maryland, College Park, MD, USA
11 Physikalisches Institut, Universität Bonn, Bonn, Germany
12 III Physikalisches Institut, Technische Hochschule Aachen, Aachen, Germany
13 School of Physics and Space Research, University of Birmingham, Birmingham, UK
14 Rutherford Appleton Laboratory, Chilton, Didcot, Oxfordshire, UK
15 II Institut für Experimental Physik, Universität Hamburg/DESY, Hamburg, Germany
16 Fakultät für Physik, Albert Ludwigs Universität, Freiburg, Germany
17 Physikalisches Institut, Universität Heidelberg, Heidelberg, Germany
18 Sektion Physik, Ludwigs-Maximilians-Universitat München, Garching, Germany
19 Ottawa-Carleton Institute for Physics, Department of Physics, Carleton University, Ottawa, Ontario, Canada
20 Queen Mary and Westfield College, University of London, London, UK
21 School of Physics and Space Research, University of Birmingham, Birmingham, UK; Royal Society University Research Fellow, Canada
22 Department of Physics, University of California, Riverside, CA, USA
23 University College London, London, UK
24 Department of Physics, Technion-Israel Institute of Technology, Haifa, Israel
25 Department of Physics, University of Alberta, Edmonton, AB, Canada
26 Institute of Nuclear Research, Debrecen, Hungary; Department of Experimental Physics, Lajos Kossuth University, Debrecen, Hungary
27 Centre for Research in Particle Physics, Carleton University, Ottawa, Ontario, Canada
28 Laboratoire de Physique Nucléaire, Université de Montréal, Montréal, Quebec, Canada
29 Particle Physics Department, Weizmann Institute of Science, Rehovot, Israel
30 Department of Physics, University of Alberta, Edmonton, AB, Canada; TRIUMF, Vancouver, Canada
31 Research Institute for Particle and Nuclear Physics, Budapest, Hungary
32 Brunel University, Uxbridge, Middlesex, UK
33 Department of Physics, University of Victoria, Victoria, BC, Canada; TRIUMF, Vancouver, Canada
34 Research Institute for Particle and Nuclear Physics, Budapest, Hungary; Institute of Nuclear Research, Debrecen, Hungary
35 Department of Physics, University of British Columbia, Vancouver, BC, Canada
36 Department of Physics, University of Victoria, Victoria, BC, Canada
37 Department of Physics, University of Oregon, Eugene, OR, USA
38 Dept of Physics, Duke University, Durham, NC, USA
39 Department of Physics, Technion-Israel Institute of Technology, Haifa, Israel; Department of Physics, New York University, NY, USA
40 Institute of Nuclear Research, Debrecen, Hungary
1 CERN, European Organisation for Particle Physics, Geneva 23, Switzerland
2 Department of Physics and Astronomy, Tel Aviv University, Tel Aviv, Israel
3 Department of Physics, Schuster Laboratory, The University, Manchester, UK
4 Cavendish Laboratory, Cambridge, UK
5 Enrico Fermi Institute and Department of Physics, University of Chicago, Chicago, IL, USA
6 Department of Physics, Indiana University, Bloomington, IN, USA
7 Dipartimento di Fisica dell' Università di Bologna and INFN, Bologna, Italy
8 International Centre for Elementary Particle Physics and Department of Physics, University of Tokyo, Tokyo, Japan
9 Laboratoire de Physique Nucléaire, Université de Montréal, Montréal, Quebec, Canada; TRIUMF, Vancouver, Canada
10 Department of Physics, University of Maryland, College Park, MD, USA
11 Physikalisches Institut, Universität Bonn, Bonn, Germany
12 III Physikalisches Institut, Technische Hochschule Aachen, Aachen, Germany
13 School of Physics and Space Research, University of Birmingham, Birmingham, UK
14 Rutherford Appleton Laboratory, Chilton, Didcot, Oxfordshire, UK
15 II Institut für Experimental Physik, Universität Hamburg/DESY, Hamburg, Germany
16 Fakultät für Physik, Albert Ludwigs Universität, Freiburg, Germany
17 Physikalisches Institut, Universität Heidelberg, Heidelberg, Germany
18 Sektion Physik, Ludwigs-Maximilians-Universitat München, Garching, Germany
19 Ottawa-Carleton Institute for Physics, Department of Physics, Carleton University, Ottawa, Ontario, Canada
20 Queen Mary and Westfield College, University of London, London, UK
21 School of Physics and Space Research, University of Birmingham, Birmingham, UK; Royal Society University Research Fellow, Canada
22 Department of Physics, University of California, Riverside, CA, USA
23 University College London, London, UK
24 Department of Physics, Technion-Israel Institute of Technology, Haifa, Israel
25 Department of Physics, University of Alberta, Edmonton, AB, Canada
26 Institute of Nuclear Research, Debrecen, Hungary; Department of Experimental Physics, Lajos Kossuth University, Debrecen, Hungary
27 Centre for Research in Particle Physics, Carleton University, Ottawa, Ontario, Canada
28 Laboratoire de Physique Nucléaire, Université de Montréal, Montréal, Quebec, Canada
29 Particle Physics Department, Weizmann Institute of Science, Rehovot, Israel
30 Department of Physics, University of Alberta, Edmonton, AB, Canada; TRIUMF, Vancouver, Canada
31 Research Institute for Particle and Nuclear Physics, Budapest, Hungary
32 Brunel University, Uxbridge, Middlesex, UK
33 Department of Physics, University of Victoria, Victoria, BC, Canada; TRIUMF, Vancouver, Canada
34 Research Institute for Particle and Nuclear Physics, Budapest, Hungary; Institute of Nuclear Research, Debrecen, Hungary
35 Department of Physics, University of British Columbia, Vancouver, BC, Canada
36 Department of Physics, University of Victoria, Victoria, BC, Canada
37 Department of Physics, University of Oregon, Eugene, OR, USA
38 Dept of Physics, Duke University, Durham, NC, USA
39 Department of Physics, Technion-Israel Institute of Technology, Haifa, Israel; Department of Physics, New York University, NY, USA
40 Institute of Nuclear Research, Debrecen, Hungary
Pages
21-30
Publication year
1998
Publication date
Mar 1998
ISSN
14346044
e-ISSN
14346052
Source type
Scholarly Journal
Language of publication
English
ProQuest document ID
2293504807
Copyright
The European Physical Journal C is a copyright of Springer, (1993). All Rights Reserved.