Please use this identifier to cite or link to this item: http://buratest.brunel.ac.uk/handle/2438/9611
Title: A measurement of photon radiation in lepton pair events from Z0 decays
Authors: Acton, PD
Alexander, G
Allison, J
Allport, PP
Anderson, KJ
Arcelli, S
Ashton, P
Astbury, A
Axen, D
Azuelos, G
Bahan, GA
Baines, JTM
Karlen, D
Hou, SR
Riles, K
Gary, JW
Kellogg, RG
Brabson, BB
Beck, A
Shen, BC
Hauschild, M
Bell, KW
Gaidot, A
Berlich, P
La Marche, F
Biebel, O
Elcombe, PA
Humbert, R
Nozaki, M
Kral, JF
Kleinwort, C
Hobbs, JD
Chang, CY
Scharffhansen, P
Mattig, P
Oakham, FG
Oram, CJ
Settles, M
O'Neill, BP
Carnegie, RK
Mouthuy, T
Kobayashi, T
Rust, DR
Binder, U
Shypit, R
Cohen, I
Thackray, NJ
Goldberg, J
Cooper, M
Lloyd, SL
Coupland, M
Gensler, SW
Moss, MW
Pitman, D
Ledu, P
Keeler, RK
O'Neale, SW
Poffenberger, P
Przysiezniak, H
Teixeiradias, P
Bella, G
Duchovni, E
Pinfold, JL
Lee, AM
Tsukamoto, T
Watson, AT
Skuja, A
Estabrooks, PG
Martin, JP
Fabbri, F
Moisan, C
Pilcher, JE
Roney, JM
Barlow, RJ
Routenburg, P
Watkins, PM
Conboy, JE
Gascon, J
Rollnik, A
Nguyen, HH
Weber, M
Tysarczykniemeyer, G
Gentit, FX
Behnke, T
Robinson, D
Schaile, AD
Charlton, DG
Schenk, P
Winterer, VH
Gorn, W
Sasaki, M
Heuer, RD
Wotton, S
Hanson, GG
Sanghera, S
Scott, WG
Simon, A
Zeuner, W
Hattersley, PM
Schwiening, J
Hawkes, CM
Oreglia, MJ
Mori, T
Weymann, M
Batley, JR
Panzersteindel, B
Ball, AH
Ho, C
Capiluppi, P
McNutt, JR
Leroy, C
Holl, B
Quast, G
Honma, AK
Larson, WJ
Nellen, B
Takeda, H
Plane, DE
Patrick, GN
Miller, DJ
OPAL Collaboration
Schreiber, S
Tarem, S
Turner, MF
Burckhart, HJ
Taras, P
Jobes, M
Strohmer, R
Pfister, P
Bougerolle, S
Carter, AA
Kawamoto, T
Dixit, MS
Beaudoin, G
Kennedy, BW
Runge, K
Klem, DE
Loebinger, FK
Stier, HE
Ward, CP
Pansart, JP
Takeshita,T
Ward, DR
Weber, P
Dittmar, M
Hochman, D
Kuwano, M
Walker, JP
Robins, SA
Duckeck, G
Clarke, PEL
Layter, JG
Von der Schmitt, H
Leblanc, P
Springer, RW
Wahl, C
Wilson, JA
Hill, JC
Wyatt, TR
Ganel, O
Letts, J
Wilson, GW
Strom, D
McGowan, RF
Dumas, DJP
Lorah, JM
Hobson, PR
Whalley, MA
Zacharov, I
Banks, J
Goodrick, MJ
Marcellini, S
Yurko, M
Mes, H
Grandi, C
Mashimo, T
Yekutieli, G
Buijs, A
Carter, JR
Hart, J
Brun, R
Meijers, F
Bock, P
Stephens, K
Giacomelli, G
Hillier, SJ
Van Kooten, R
Heflin, E
Mildenberger, J
Jimack, M
Ros, E
Mohr, W
Weisz, S
Montanari, A
Redmond, MW
Bloodworth, IJ
Debu, P
Boden, B
Vasseur, G
Smith, TJ
Brown, RM
Dieckmann, A
Duerdoth, IP
Jeremie, H
Deninno, MM
Ogren, HO
Dallavalle, GM
Wagner, A
Ihssen, H
Jones, RWL
Kroll, J
Hinshaw, DA
Paschievici, P
Yaari, R
Pawley, SJ
Bethke, S
Dado, S
Fukunaga, C
van den Plas, D
Delpozo, L
Geddes, NI
Vonkrogh, J
Mir, R
Prebys, E
Fong, DG
Bosch, HM
Kyberd, P
Kawagoe, K
Rees, DL
Breuker, H
Couch, M
Fischer, HM
Gillies, JD
Michelini, A
Grant, FC
Lessard, L
Rossi, AM
Gibson, WR
Dejong, S
Levegrun, S
Runolfsson, O
Becker, J
Gibson, V
Harrison, PF
Hemingway, RJ
Mannelli, M
Schappert, W
Hargrove, CK
Singh, P
Maringer, G
Hansroul, M
Jeffreys, PW
Jovanovic, P
McMahon, TJ
Jawahery, A
Sherwood, P
HughesJones, RE
Cuffiani, M
Lorazo, B
Middleton, RP
Menszner, D
Smith, AM
Ogg, M
Wingerter, I
Sobie, R
Geichgimbel, C
Sproston, M
Wells, PS
Howarth, CP
Kopke, L
Etzion, E
Collins, WJ
Janissen, AC
Kreutzmann, H
Lafferty, GD
Odorici, F
Kowalewski, R
Transtromer, G
Komamiya, S
Finckekeeler, M
Oh, H
Pouladdej, A
Mikenberg, G
Vandalen, GJ
Hagemann, J
Virtue, CJ
Homer, RJ
Kokott, TP
Lennert, P
Eckerlin, G
Levinson, L
Poli, B
Snow, GA
Watson, NK
Lellouch, D
Igokemenes, P
Pritchard, TW
Orito, S
Wermes, N
Imrie, DC
Lehto, MH
Ludwig, J
Siroli, GP
Martin, AJ
Rossberg, S
Wood, NC
Lou, XC
Barker, GJ
Rosvick, M
Yang, Y
Losty, MJ
McKenna, J
Merritt, FS
Schaile, O
Zorn, GT
Maur, U
Keywords: OPAL detector;Topological definitions;Lepton pair identification;Selection efficiency
Issue Date: 1991
Publisher: Elsevier
Citation: Physics Letters B, 1991, 273 pp. 338 - 354
Abstract: We have measured the photon yield in lepton pair events recorded by the OPAL detector in a data sample corresponding to an integrated luminosity of 7.1 pb−1 at centre-of-mass energies between 88 GeV and 94 GeV. The results are compared to QED expectations for initial and final state photon radiation. No anomalous photon yield has been found, and stringent limits on the branching ratio for exotic radiative three body Z0 decays into a photon and a pair of leptons are obtained. We also place limits on possible Z0 decays into a photon and a resonance X with subsequent decays of X into a pair of leptons. Acollinear μ+μ− events with missing momentum along the beam direction are identified as events with hard initial state photon radiation and used to measure an average cross section of 15 ±86 pb for e+e− annihilation into μ+μ−, in the so far untested range of centre-of-mass energies between 60 GeV and 84 GeV. This value is consistent with a cross section of 24 pb, expected from Z0 and photon exchange.
URI: http://bura.brunel.ac.uk/handle/2438/9611
DOI: http://dx.doi.org/10.1016/0370-2693(91)91694-Q
ISSN: 0370-2693
Appears in Collections:Dept of Electronic and Computer Engineering Research Papers

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