Search for a massive Di-photon resonance at root s=91-172 GeV

Ackerstaff, K; Alexander, G; Allison, J; Altekamp, N; Anderson, KJ; Anderson, S; Arcelli, S; Asai, S; Axen, D; Azuelos, G; Ball, AH; Schmitt, S; Patrick, GN; Patt, J; Pearce, MJ; Geddes, NI; Voss, H; Perez-Ochoa, R; Petzold, S; Hajdu, C; Fierro, M; Meijers, F; Sbarra, C; Pfeifenschneider, P; Pilcher, JE; Wolf, G; Pinfold, J; Plane, DE; Losty, MJ; Wackerle, F; Biebel, O; Geich-Gimbel, C; Kluth, S; Rodning, N; Poffenberger, P; Runge, K; Schoning, A; Schroder, M; Schultz-Coulon, HC; Schumacher, M; Schwick, C; Scott, WG; Bonacorsi, D; Kobayashi, T; Shears, TG; Bock, P; Yekutieli, G; Lai, WP; Shen, BC; Ward, DR; Bloodworth, IJ; Ludwig, J; Shepherd-Themistocleous, CH; Barberio, E; Kobel, M; Sherwood, P; Gibson, WR; Hapke, M; Siroli, GP; Sittler, A; Skillman, A; Lanske, D; Skuja, A; Hemingway, RJ; Hill, JC; Wermes, N; Smith, AM; Snow, GA; Sobie, R; Fischer, HM; Wagner, A; Macchiolo, A; Soldner-Rembold, S; Bloomer, JE; Hart, PA; Beeston, C; Ros, E; Springer, RW; Sproston, M; Stephens, K; Giacomelli, G; Fleck, I; Zacek, V; Markus, C; Steuerer, J; Stockhausen, B; Stoll, K; Koetke, DS; Strom, D; Macpherson, A; Schenk, P; Szymanski, P; Tafirout, R; Mattig, P; Talbot, SD; Hartmann, C; Posthaus, A; Giacomelli, P; Kokott, TP; Bobinski, M; Zer-Zion, D; Tanaka, S; Taras, P; Tarem, S; Lauber, J; Folman, R; Teuscher, R; Thiergen, M; Mannelli, M; Bechtluft, J; Wilkens, B; Thomson, MA; von Torne, E; Giacomelli, R; Towers, S; Trigger, I; Ruppel, U; Fong, DG; Hauschild, M; Lautenschlager, SR; Verzocchi, M; Trocsanyi, Z; Ward, CP; OPAL Collaboration; Bouwens, BT; Braibant, S; Brigliadori, L; Brown, RM; Burckhart, HJ; Barlow, RJ; Burgard, C; Hildreth, MD; Gingrich, DM; Rees, DL; Burgin, R; Futyan, DI; Herndon, M; Rust, DR; Capiluppi, P; Gorn, W; Carnegie, RK; Letts, J; Martin, AJ; Carter, AA; Carter, JR; Chang, CY; Rigby, D; Charlton, DG; McKenna, J; Bell, KW; Chrisman, D; Clarke, PEL; Cohen, I; Kolrep, M; Foucher, M; Rylko, R; Conboy, JE; Herten, G; Martin, JP; Hanson, GG; Cooke, OC; Cuffiani, M; Dado, S; Lazic, D; Komamiya, S; Glenzinski, D; Sarkisyan, EKG; Dallapiccola, C; Dallavalle, GM; Davis, R; De Jong, S; Sachs, K; Wyatt, TR; del Pozo, LA; Desch, K; Scharff-Hansen, P; Dienes, B; Martinez, G; Tsur, E; Lee, AM; Heuer, RD; Goldberg, J; Dixit, MS; Silva, ED; Doucet, M; Robertson, S; Kress, T; Duchovni, E; Duckeck, G; Bird, SD; Geralis, T; Duerdoth, IP; Eatough, D; Lefebvre, E; Edwards, JEG; Estabrooks, PG; Watkins, PM; Krieger, P; Mashimo, T; Robins, SA; Evans, HG; Furtjes, A; Goodrick, MJ; Hillier, SJ; Hobson, PR; Homer, RJ; Honma, AK; Horvath, D; Grandi, C; Hossain, KR; Levinson, L; Turcot, AS; Howard, R; Lafferty, GD; Mckigney, EA; Watson, AT; Huntemeyer, P; Long, GD; Hutchcroft, DE; Rossi, AM; Bartoldus, R; Igo-Kemenes, P; Imrie, DC; Turner-Watson, MF; Ingram, MR; Schieck, J; Hargrove, CK; Ishii, K; Jawahery, A; Jeffreys, PW; von Krogh, J; Watson, NK; Jeremie, H; McMahon, TJ; Schaile, AD; Marcellini, S; Jimack, M; Joly, A; Jones, CR; Roney, JM; Lloyd, SL; White, JS; Batley, JR; Jones, G; Jones, M; Jost, U; Wells, PS; Gibson, V; Jovanovic, P; Junk, TR; Karlen, D; Schaile, O; Evans, M; Rooke, A; McPherson, RA; Behnke, T; Kartvelishvili, V; Kawagoe, K; Kawamoto, T; Utzat, P; Kayal, PI; Baumann, S; Hawkings, R; Layter, JG; Keeler, RK; Kellogg, RG; Biguzzi, A; Kennedy, BW; Kirk, J; Gagnon, P; Scharf, F; Van Kooten, R; Klier, A; Kyberd, P; Loebinger, FK; Menke, S; Merritt, FS; Mes, H; Meyer, J; Michelini, A; Mikenberg, G; Routenburg, P; Fabbri, F; Miller, DJ; Poli, B; Schleper, P; Gary, JW; Mincer, A; Runolfsson, O; Mir, R; Gross, E; Mohr, W; Bella, G; Fanti, M; Montanari, A; Yamashita, S; Bell, AN; Mori, T; Morii, M; Muller, U; Gascon, J; Mihara, S; Blobel, V; Boutemeur, M; Saeki, T; Nagai, K; Nakamura, I; Neal, HA; Vikas, P; Rozen, Y; Grunhaus, J; Nellen, B; Nisius, R; Bentvelsen, S; Gascon-Shotkin, SM; Lellouch, D; O'Neale, SW; Oakham, FG; Odorici, F; Wilson, GW; Vokurka, EH; Schmitt, B; Hansroul, M; Ogren, HO; Oh, A; Oldershaw, NJ; Faust, AA; Oreglia, MJ; Gruwe, M; McDonald, WJ; Orito, S; Palinkas, J; Hawkes, CM; Pasztor, G; Bethke, S; Lahmann, R; Wilson, JA; Fiedler, F; Pater, JR

Please use this identifier to cite or link to this item: http://bura.brunel.ac.uk/handle/2438/21542

Title:	Search for a massive Di-photon resonance at root s=91-172 GeV
Authors:	Ackerstaff, K Alexander, G Allison, J Altekamp, N Anderson, KJ Anderson, S Arcelli, S Asai, S Axen, D Azuelos, G Ball, AH Schmitt, S Patrick, GN Patt, J Pearce, MJ Geddes, NI Voss, H Perez-Ochoa, R Petzold, S Hajdu, C Fierro, M Meijers, F Sbarra, C Pfeifenschneider, P Pilcher, JE Wolf, G Pinfold, J Plane, DE Losty, MJ Wackerle, F Biebel, O Geich-Gimbel, C Kluth, S Rodning, N Poffenberger, P Runge, K Schoning, A Schroder, M Schultz-Coulon, HC Schumacher, M Schwick, C Scott, WG Bonacorsi, D Kobayashi, T Shears, TG Bock, P Yekutieli, G Lai, WP Shen, BC Ward, DR Bloodworth, IJ Ludwig, J Shepherd-Themistocleous, CH Barberio, E Kobel, M Sherwood, P Gibson, WR Hapke, M Siroli, GP Sittler, A Skillman, A Lanske, D Skuja, A Hemingway, RJ Hill, JC Wermes, N Smith, AM Snow, GA Sobie, R Fischer, HM Wagner, A Macchiolo, A Soldner-Rembold, S Bloomer, JE Hart, PA Beeston, C Ros, E Springer, RW Sproston, M Stephens, K Giacomelli, G Fleck, I Zacek, V Markus, C Steuerer, J Stockhausen, B Stoll, K Koetke, DS Strom, D Macpherson, A Schenk, P Szymanski, P Tafirout, R Mattig, P Talbot, SD Hartmann, C Posthaus, A Giacomelli, P Kokott, TP Bobinski, M Zer-Zion, D Tanaka, S Taras, P Tarem, S Lauber, J Folman, R Teuscher, R Thiergen, M Mannelli, M Bechtluft, J Wilkens, B Thomson, MA von Torne, E Giacomelli, R Towers, S Trigger, I Ruppel, U Fong, DG Hauschild, M Lautenschlager, SR Verzocchi, M Trocsanyi, Z Ward, CP OPAL Collaboration Bouwens, BT Braibant, S Brigliadori, L Brown, RM Burckhart, HJ Barlow, RJ Burgard, C Hildreth, MD Gingrich, DM Rees, DL Burgin, R Futyan, DI Herndon, M Rust, DR Capiluppi, P Gorn, W Carnegie, RK Letts, J Martin, AJ Carter, AA Carter, JR Chang, CY Rigby, D Charlton, DG McKenna, J Bell, KW Chrisman, D Clarke, PEL Cohen, I Kolrep, M Foucher, M Rylko, R Conboy, JE Herten, G Martin, JP Hanson, GG Cooke, OC Cuffiani, M Dado, S Lazic, D Komamiya, S Glenzinski, D Sarkisyan, EKG Dallapiccola, C Dallavalle, GM Davis, R De Jong, S Sachs, K Wyatt, TR del Pozo, LA Desch, K Scharff-Hansen, P Dienes, B Martinez, G Tsur, E Lee, AM Heuer, RD Goldberg, J Dixit, MS Silva, ED Doucet, M Robertson, S Kress, T Duchovni, E Duckeck, G Bird, SD Geralis, T Duerdoth, IP Eatough, D Lefebvre, E Edwards, JEG Estabrooks, PG Watkins, PM Krieger, P Mashimo, T Robins, SA Evans, HG Furtjes, A Goodrick, MJ Hillier, SJ Hobson, PR Homer, RJ Honma, AK Horvath, D Grandi, C Hossain, KR Levinson, L Turcot, AS Howard, R Lafferty, GD Mckigney, EA Watson, AT Huntemeyer, P Long, GD Hutchcroft, DE Rossi, AM Bartoldus, R Igo-Kemenes, P Imrie, DC Turner-Watson, MF Ingram, MR Schieck, J Hargrove, CK Ishii, K Jawahery, A Jeffreys, PW von Krogh, J Watson, NK Jeremie, H McMahon, TJ Schaile, AD Marcellini, S Jimack, M Joly, A Jones, CR Roney, JM Lloyd, SL White, JS Batley, JR Jones, G Jones, M Jost, U Wells, PS Gibson, V Jovanovic, P Junk, TR Karlen, D Schaile, O Evans, M Rooke, A McPherson, RA Behnke, T Kartvelishvili, V Kawagoe, K Kawamoto, T Utzat, P Kayal, PI Baumann, S Hawkings, R Layter, JG Keeler, RK Kellogg, RG Biguzzi, A Kennedy, BW Kirk, J Gagnon, P Scharf, F Van Kooten, R Klier, A Kyberd, P Loebinger, FK Menke, S Merritt, FS Mes, H Meyer, J Michelini, A Mikenberg, G Routenburg, P Fabbri, F Miller, DJ Poli, B Schleper, P Gary, JW Mincer, A Runolfsson, O Mir, R Gross, E Mohr, W Bella, G Fanti, M Montanari, A Yamashita, S Bell, AN Mori, T Morii, M Muller, U Gascon, J Mihara, S Blobel, V Boutemeur, M Saeki, T Nagai, K Nakamura, I Neal, HA Vikas, P Rozen, Y Grunhaus, J Nellen, B Nisius, R Bentvelsen, S Gascon-Shotkin, SM Lellouch, D O'Neale, SW Oakham, FG Odorici, F Wilson, GW Vokurka, EH Schmitt, B Hansroul, M Ogren, HO Oh, A Oldershaw, NJ Faust, AA Oreglia, MJ Gruwe, M McDonald, WJ Orito, S Palinkas, J Hawkes, CM Pasztor, G Bethke, S Lahmann, R Wilson, JA Fiedler, F Pater, JR
Keywords:	physics;energies;LEP;Higgs bosons;Lund Monte-Carlo;E+E annihilation;microvertex detector;OPAL jet chamber;cross-sections;electroweak couplings
Issue Date:	1-Mar-1998
Publisher:	Springer
Citation:	Ackerstaff, K. et al. for the benefit of the OPAL Collaboration (1998) 'Search for a massive Di-photon resonance at root s=91-172 GeV', European Physical Journal C, 1 (1-2), pp. 31 - 43. doi: 10.1007/BF01245796.
Abstract:	A search for the resonant production of high mass photon pairs associated with a leptonic or hadronic system has been performed using a total data sample of 25.7 pb−1 taken at centre-of-mass energies between 130 GeV and 172 GeV with the OPAL detector at LEP. The observed number of events is consistent with the expected number from Standard Model processes. The observed candidates are combined with search results from ∝s ≈ Mz to place limits onB(H0 → γγ within the Standard Model for Higgs boson masses up to 77 GeV, and on the production cross section of any scalar resonance decaying into di-photons. Upper limits onB(H0 →4 γγ x σ(e+e− → H°Z°) of 290 – 830 fb are obtained over 40 <M H < 160 GeV. Higgs scalars which couple only to gauge bosons with Standard Model strength are ruled out up to a mass of 76.5 GeV at the 95% confidence level.
Description:	Comments: The interpretation of the upper limit for the Higgs -> gamma gamma branching ratio limit assuming the Standard Model production cross section has been clarified. The derived lower mass limit of 76.5 GeV applies to Higgs scalars with nominal Standard Model HZZ couplings and no tree-level fermion couplings. A pre-print of this article is available on arXiv at https://doi.org/10.48550/arXiv.hep-ex/9709022 - [v2] Wed, 3 Dec 1997 01:43:28 UTC (90 KB). it is also the file archived on this institutional repository.
URI:	https://bura.brunel.ac.uk/handle/2438/21542
DOI:	https://doi.org/10.1007/BF01245796
ISSN:	1434-6044
Appears in Collections:	Dept of Electronic and Electrical Engineering Research Papers

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FullText.pdf	Copyright @ Springer-Verlag 1998. all rights served. This is a pre-copyedited, author-produced version of an article accepted for publication in Ackerstaff, K. et al. for the benefit of the OPAL Collaboration (1998) 'Search for a massive Di-photon resonance at root s=91-172 GeV', European Physical Journal C, 1 (1-2), pp. 31 - 43. The final authenticated version is available online at https://https://doi.org/10.1007/BF01245796 (see: https://www.springernature.com/gp/open-research/policies/journal-policies).	381.75 kB	Adobe PDF	View/Open

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