Multi-photon production in e+e- collisions at √s =181-209 GeV: The opal collaboration

G. Abbiendi; C. Ainsley; P. F. Åkesson; G. Alexander; J. Allison; P. Amaral; G. Anagnostou; K. J. Anderson; S. Arcelli; S. Asai; D. Axen; G. Azuelos; I. Bailey; E. Barberio; 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; I. J. Bloodworth; O. Boeriu; P. Bock; D. Bonacorsi; M. Boutemeur; S. Braibant; L. Brigliadori; R. M. Brown; K. Buesser; H. J. Burckhart; S. Campana; R. K. Carnegie; B. Caron; A. A. Carter; J. R. Carter; C. Y. Chang; D. G. Charlton; A. Csilling; M. Cuffiani; S. Dado; G. M. Dallavalle; S. Dallison; A. de Roeck; E. A. de Wolf; K. Desch; B. Dienes; M. Donkers; J. Dubbert; E. Duchovni; G. Duckeck; I. P. Duerdoth; E. Elfgren; E. Etzion; F. Fabbri; L. Feld; P. Ferrari; F. Fiedler; I. Fleck; M. Ford; A. Frey; A. Fürtjes; P. Gagnon; J. W. Gary; G. Gaycken; C. Geich-Gimbel; G. Giacomelli; P. Giacomelli; M. Giunta; J. Goldberg; E. Gross; J. Grunhaus; M. Gruwé; P. O. Günther; A. Gupta; C. Hajdu; M. Hamann; G. G. Hanson; K. Harder; A. Harel; M. Harin-Dirac; M. Hauschild; J. Hauschildt; C. M. Hawkes; R. Hawkings; R. J. Hemingway; C. Hensel; G. Herten; R. D. Heuer; J. C. Hill; K. Hoffman; R. J. Homer; D. Horváth; R. Howard; P. Hüntemeyer; P. Igo-Kemenes; K. Ishii; H. Jeremie; P. Jovanovic; T. R. Junk; N. Kanaya; J. Kanzaki; G. Karapetian; D. Karlen; V. Kartvelishvili; K. Kawagoe; T. Kawamoto; R. K. Keeler; R. G. Kellogg; B. W. Kennedy; D. H. Kim; K. Klein; A. Klier; S. Kluth; T. Kobayashi; M. Kobel; S. Komamiya; L. Kormos; R. V. Kowalewski; T. Krämer; T. Kress; P. Krieger; J. von Krogh; D. Krop; K. Kruger; M. Kupper; G. D. Lafferty; H. Landsman; D. Lanske; J. G. Layter; A. Leins; D. Lellouch; J. Letts; L. Levinson; J. Lillich; S. L. Lloyd; F. K. Loebinger; J. Lu; J. Ludwig; A. Macpherson; W. Mader; S. Marcellini; T. E. Marchant; A. J. Martin; J. P. Martin; G. Masetti; T. Mashimo; P. Mättig; W. J. McDonald; J. McKenna; T. J. McMahon; R. A. McPherson; F. Meijers; P. Mendez-Lorenzo; W. Menges; F. S. Merritt; H. Mes; A. Michelini; S. Mihara; G. Mikenberg; D. J. Miller; S. Moed; W. Mohr; T. Mori; A. Mutter; K. Nagai; I. Nakamura; H. A. Neal; R. Nisius; S. W. O'Neale; A. Oh; A. Okpara; M. J. Oreglia; S. Orito; C. Pahl; G. Pásztor; J. R. Pater; G. N. Patrick; J. E. Pilcher; J. Pinfold; D. E. Plane; B. Poli; J. Polok; O. Pooth; M. Przybycień; A. Quadt; K. Rabbertz; C. Rembser; P. Renkel; H. Rick; J. M. Roney; S. Rosati; Y. Rozen; K. Runge; K. Sachs; T. Saeki; O. Sahr; E. K.G. Sarkisyan; A. D. Schaile; O. Schaile; P. Scharff-Hansen; J. Schieck; T. Schörner-Sadenius; M. Schröder; M. Schumacher; C. Schwick; W. G. Scott; R. Seuster; T. G. Shears; B. C. Shen; C. H. Shepherd-Themistocleous; P. Sherwood; G. Siroli; A. Skuja; A. M. Smith; R. Sobie; S. Söldner-Rembold; S. Spagnolo; F. Spano; A. Stahl; K. Stephens; D. Strom; R. Ströhmer; S. Tarem; M. Tasevsky; R. J. Taylor; R. Teuscher; M. A. Thomson; E. Torrence; D. Toya; P. Tran; T. Trefzger; A. Tricoli; I. Trigger; Z. Trócsányi; E. Tsur; M. F. Turner-Watson; I. Ueda; B. Ujvári; B. Vachon; C. F. Vollmer; P. Vannerem; M. Verzocchi; H. Voss; J. Vossebeld; D. Waller; C. P. Ward; D. R. Ward; P. M. Watkins; A. T. Watson; N. K. Watson; P. S. Wells; T. Wengler; N. Wermes; D. Wetterling; G. W. Wilson; J. A. Wilson; G. Wolf; T. R. Wyatt; S. Yamashita; D. Zer-Zion; L. Zivkovic

doi:10.1140/epjc/s2002-01074-5

Multi-photon production in e⁺e^- collisions at √s =181-209 GeV: The opal collaboration

G. Abbiendi^*, C. Ainsley, P. F. Åkesson, G. Alexander, J. Allison, P. Amaral, G. Anagnostou, K. J. Anderson, S. Arcelli, S. Asai, D. Axen, G. Azuelos, I. Bailey, E. Barberio, R. J. Barlow, R. J. Batley, P. Bechtle, T. Behnke, K. W. Bell, P. J. BellG. Bella, A. Bellerive, G. Benelli, S. Bethke, O. Biebel, I. J. Bloodworth, O. Boeriu, P. Bock, D. Bonacorsi, M. Boutemeur, S. Braibant, L. Brigliadori, R. M. Brown, K. Buesser, H. J. Burckhart, S. Campana, R. K. Carnegie, B. Caron, A. A. Carter, J. R. Carter, C. Y. Chang, D. G. Charlton, A. Csilling, M. Cuffiani, S. Dado, G. M. Dallavalle, S. Dallison, A. de Roeck, E. A. de Wolf, K. Desch, B. Dienes, M. Donkers, J. Dubbert, E. Duchovni, G. Duckeck, I. P. Duerdoth, E. Elfgren, E. Etzion, F. Fabbri, L. Feld, P. Ferrari, F. Fiedler, I. Fleck, M. Ford, A. Frey, A. Fürtjes, P. Gagnon, J. W. Gary, G. Gaycken, C. Geich-Gimbel, G. Giacomelli, P. Giacomelli, M. Giunta, J. Goldberg, E. Gross, J. Grunhaus, M. Gruwé, P. O. Günther, A. Gupta, C. Hajdu, M. Hamann, G. G. Hanson, K. Harder, A. Harel, M. Harin-Dirac, M. Hauschild, J. Hauschildt, C. M. Hawkes, R. Hawkings, R. J. Hemingway, C. Hensel, G. Herten, R. D. Heuer, J. C. Hill, K. Hoffman, R. J. Homer, D. Horváth, R. Howard, P. Hüntemeyer, P. Igo-Kemenes, K. Ishii, H. Jeremie, P. Jovanovic, T. R. Junk, N. Kanaya, J. Kanzaki, G. Karapetian, D. Karlen, V. Kartvelishvili, K. Kawagoe, T. Kawamoto, R. K. Keeler, R. G. Kellogg, B. W. Kennedy, D. H. Kim, K. Klein, A. Klier, S. Kluth, T. Kobayashi, M. Kobel, S. Komamiya, L. Kormos, R. V. Kowalewski, T. Krämer, T. Kress, P. Krieger, J. von Krogh, D. Krop, K. Kruger, M. Kupper, G. D. Lafferty, H. Landsman, D. Lanske, J. G. Layter, A. Leins, D. Lellouch, J. Letts, L. Levinson, J. Lillich, S. L. Lloyd, F. K. Loebinger, J. Lu, J. Ludwig, A. Macpherson, W. Mader, S. Marcellini, T. E. Marchant, A. J. Martin, J. P. Martin, G. Masetti, T. Mashimo, P. Mättig, W. J. McDonald, J. McKenna, T. J. McMahon, R. A. McPherson, F. Meijers, P. Mendez-Lorenzo, W. Menges, F. S. Merritt, H. Mes, A. Michelini, S. Mihara, G. Mikenberg, D. J. Miller, S. Moed, W. Mohr, T. Mori, A. Mutter, K. Nagai, I. Nakamura, H. A. Neal, R. Nisius, S. W. O'Neale, A. Oh, A. Okpara, M. J. Oreglia, S. Orito, C. Pahl, G. Pásztor, J. R. Pater, G. N. Patrick, J. E. Pilcher, J. Pinfold, D. E. Plane, B. Poli, J. Polok, O. Pooth, M. Przybycień, A. Quadt, K. Rabbertz, C. Rembser, P. Renkel, H. Rick, J. M. Roney, S. Rosati, Y. Rozen, K. Runge, K. Sachs, T. Saeki, O. Sahr, E. K.G. Sarkisyan, A. D. Schaile, O. Schaile, P. Scharff-Hansen, J. Schieck, T. Schörner-Sadenius, M. Schröder, M. Schumacher, C. Schwick, W. G. Scott, R. Seuster, T. G. Shears, B. C. Shen, C. H. Shepherd-Themistocleous, P. Sherwood, G. Siroli, A. Skuja, A. M. Smith, R. Sobie, S. Söldner-Rembold, S. Spagnolo, F. Spano, A. Stahl, K. Stephens, D. Strom, R. Ströhmer, S. Tarem, M. Tasevsky, R. J. Taylor, R. Teuscher, M. A. Thomson, E. Torrence, D. Toya, P. Tran, T. Trefzger, A. Tricoli, I. Trigger, Z. Trócsányi, E. Tsur, M. F. Turner-Watson, I. Ueda, B. Ujvári, B. Vachon, C. F. Vollmer, P. Vannerem, M. Verzocchi, H. Voss, J. Vossebeld, D. Waller, C. P. Ward, D. R. Ward, P. M. Watkins, A. T. Watson, N. K. Watson, P. S. Wells, T. Wengler, N. Wermes, D. Wetterling, G. W. Wilson, J. A. Wilson, G. Wolf, T. R. Wyatt, S. Yamashita, D. Zer-Zion, L. Zivkovic

^*Corresponding author for this work

School of Physics and Astronomy

Research output: Contribution to journal › Article › peer-review

66 Scopus citations

Abstract

The process e⁺e^- → γγ(γ) is studied using data collected by the OPAL detector at LEP between the years 1997 and 2000. The data set corresponds to an integrated luminosity of 672.3 pb^-1 at centre-of-mass energies lying between 181 GeV and 209 GeV. Total and differential cross-sections are determined and found to be in good agreement with the predictions of QED. Pits to the observed angular distributions are used to set limits on parameters from several models of physics beyond the Standard Model such as cut-off parameters, contact interactions of the type e⁺e^-γγ, gravity in extra spatial dimensions and excited electrons. In events with three photons in the final state the mass spectrum of photon pairs is investigated. No narrow resonance X → γγ is found and limits are placed on the product of the X_γ production cross-section and branching ratio.

Original language	English
Pages (from-to)	331-344
Number of pages	14
Journal	European Physical Journal C
Volume	26
Issue number	3
DOIs	https://doi.org/10.1140/epjc/s2002-01074-5
State	Published - Jan 2003

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10.1140/epjc/s2002-01074-5

Cite this

Abbiendi, G., Ainsley, C., Åkesson, P. F., Alexander, G., Allison, J., Amaral, P., Anagnostou, G., Anderson, K. J., Arcelli, S., Asai, S., Axen, D., Azuelos, G., Bailey, I., Barberio, E., Barlow, R. J., Batley, R. J., Bechtle, P., Behnke, T., Bell, K. W., ... Zivkovic, L. (2003). Multi-photon production in e⁺e^- collisions at √s =181-209 GeV: The opal collaboration. European Physical Journal C, 26(3), 331-344. https://doi.org/10.1140/epjc/s2002-01074-5

@article{c5620b714948441faa9037daff269c0e,

title = "Multi-photon production in e+e- collisions at √s =181-209 GeV: The opal collaboration",

abstract = "The process e+e- → γγ(γ) is studied using data collected by the OPAL detector at LEP between the years 1997 and 2000. The data set corresponds to an integrated luminosity of 672.3 pb-1 at centre-of-mass energies lying between 181 GeV and 209 GeV. Total and differential cross-sections are determined and found to be in good agreement with the predictions of QED. Pits to the observed angular distributions are used to set limits on parameters from several models of physics beyond the Standard Model such as cut-off parameters, contact interactions of the type e+e-γγ, gravity in extra spatial dimensions and excited electrons. In events with three photons in the final state the mass spectrum of photon pairs is investigated. No narrow resonance X → γγ is found and limits are placed on the product of the Xγ production cross-section and branching ratio.",

author = "G. Abbiendi and C. Ainsley and {\AA}kesson, {P. F.} and G. Alexander and J. Allison and P. Amaral and G. Anagnostou and Anderson, {K. J.} and S. Arcelli and S. Asai and D. Axen and G. Azuelos and I. Bailey and E. Barberio and Barlow, {R. J.} and Batley, {R. J.} and P. Bechtle and T. Behnke and Bell, {K. W.} and Bell, {P. J.} and G. Bella and A. Bellerive and G. Benelli and S. Bethke and O. Biebel and Bloodworth, {I. J.} and O. Boeriu and P. Bock and D. Bonacorsi and M. Boutemeur and S. Braibant and L. Brigliadori and Brown, {R. M.} and K. Buesser and Burckhart, {H. J.} and S. Campana and Carnegie, {R. K.} and B. Caron and Carter, {A. A.} and Carter, {J. R.} and Chang, {C. Y.} and Charlton, {D. G.} and A. Csilling and M. Cuffiani and S. Dado and Dallavalle, {G. M.} and S. Dallison and {de Roeck}, A. and {de Wolf}, {E. A.} and K. Desch and B. Dienes and M. Donkers and J. Dubbert and E. Duchovni and G. Duckeck and Duerdoth, {I. P.} and E. Elfgren and E. Etzion and F. Fabbri and L. Feld and P. Ferrari and F. Fiedler and I. Fleck and M. Ford and A. Frey and A. F{\"u}rtjes and P. Gagnon and Gary, {J. W.} and G. Gaycken and C. Geich-Gimbel and G. Giacomelli and P. Giacomelli and M. Giunta and J. Goldberg and E. Gross and J. Grunhaus and M. Gruw{\'e} and G{\"u}nther, {P. O.} and A. Gupta and C. Hajdu and M. Hamann and Hanson, {G. G.} and K. Harder and A. Harel and M. Harin-Dirac and M. Hauschild and J. Hauschildt and Hawkes, {C. M.} and R. Hawkings and Hemingway, {R. J.} and C. Hensel and G. Herten and Heuer, {R. D.} and Hill, {J. C.} and K. Hoffman and Homer, {R. J.} and D. Horv{\'a}th and R. Howard and P. H{\"u}ntemeyer and P. Igo-Kemenes and K. Ishii and H. Jeremie and P. Jovanovic and Junk, {T. R.} and N. Kanaya and J. Kanzaki and G. Karapetian and D. Karlen and V. Kartvelishvili and K. Kawagoe and T. Kawamoto and Keeler, {R. K.} and Kellogg, {R. G.} and Kennedy, {B. W.} and Kim, {D. H.} and K. Klein and A. Klier and S. Kluth and T. Kobayashi and M. Kobel and S. Komamiya and L. Kormos and Kowalewski, {R. V.} and T. Kr{\"a}mer and T. Kress and P. Krieger and {von Krogh}, J. and D. Krop and K. Kruger and M. Kupper and Lafferty, {G. D.} and H. Landsman and D. Lanske and Layter, {J. G.} and A. Leins and D. Lellouch and J. Letts and L. Levinson and J. Lillich and Lloyd, {S. L.} and Loebinger, {F. K.} and J. Lu and J. Ludwig and A. Macpherson and W. Mader and S. Marcellini and Marchant, {T. E.} and Martin, {A. J.} and Martin, {J. P.} and G. Masetti and T. Mashimo and P. M{\"a}ttig and McDonald, {W. J.} and J. McKenna and McMahon, {T. J.} and McPherson, {R. A.} and F. Meijers and P. Mendez-Lorenzo and W. Menges and Merritt, {F. S.} and H. Mes and A. Michelini and S. Mihara and G. Mikenberg and Miller, {D. J.} and S. Moed and W. Mohr and T. Mori and A. Mutter and K. Nagai and I. Nakamura and Neal, {H. A.} and R. Nisius and O'Neale, {S. W.} and A. Oh and A. Okpara and Oreglia, {M. J.} and S. Orito and C. Pahl and G. P{\'a}sztor and Pater, {J. R.} and Patrick, {G. N.} and Pilcher, {J. E.} and J. Pinfold and Plane, {D. E.} and B. Poli and J. Polok and O. Pooth and M. Przybycie{\'n} and A. Quadt and K. Rabbertz and C. Rembser and P. Renkel and H. Rick and Roney, {J. M.} and S. Rosati and Y. Rozen and K. Runge and K. Sachs and T. Saeki and O. Sahr and Sarkisyan, {E. K.G.} and Schaile, {A. D.} and O. Schaile and P. Scharff-Hansen and J. Schieck and T. Sch{\"o}rner-Sadenius and M. Schr{\"o}der and M. Schumacher and C. Schwick and Scott, {W. G.} and R. Seuster and Shears, {T. G.} and Shen, {B. C.} and Shepherd-Themistocleous, {C. H.} and P. Sherwood and G. Siroli and A. Skuja and Smith, {A. M.} and R. Sobie and S. S{\"o}ldner-Rembold and S. Spagnolo and F. Spano and A. Stahl and K. Stephens and D. Strom and R. Str{\"o}hmer and S. Tarem and M. Tasevsky and Taylor, {R. J.} and R. Teuscher and Thomson, {M. A.} and E. Torrence and D. Toya and P. Tran and T. Trefzger and A. Tricoli and I. Trigger and Z. Tr{\'o}cs{\'a}nyi and E. Tsur and Turner-Watson, {M. F.} and I. Ueda and B. Ujv{\'a}ri and B. Vachon and Vollmer, {C. F.} and P. Vannerem and M. Verzocchi and H. Voss and J. Vossebeld and D. Waller and Ward, {C. P.} and Ward, {D. R.} and Watkins, {P. M.} and Watson, {A. T.} and Watson, {N. K.} and Wells, {P. S.} and T. Wengler and N. Wermes and D. Wetterling and Wilson, {G. W.} and Wilson, {J. A.} and G. Wolf and Wyatt, {T. R.} and S. Yamashita and D. Zer-Zion and L. Zivkovic",

year = "2003",

month = jan,

doi = "10.1140/epjc/s2002-01074-5",

language = "אנגלית",

volume = "26",

pages = "331--344",

journal = "European Physical Journal C",

issn = "1434-6044",

publisher = "Springer Nature",

number = "3",

}

Abbiendi, G, Ainsley, C, Åkesson, PF, Alexander, G, Allison, J, Amaral, P, Anagnostou, G, Anderson, KJ, Arcelli, S, Asai, S, Axen, D, Azuelos, G, Bailey, I, Barberio, E, Barlow, RJ, Batley, RJ, Bechtle, P, Behnke, T, Bell, KW, Bell, PJ, Bella, G, Bellerive, A, Benelli, G, Bethke, S, Biebel, O, Bloodworth, IJ, Boeriu, O, Bock, P, Bonacorsi, D, Boutemeur, M, Braibant, S, Brigliadori, L, Brown, RM, Buesser, K, Burckhart, HJ, Campana, S, Carnegie, RK, Caron, B, Carter, AA, Carter, JR, Chang, CY, Charlton, DG, Csilling, A, Cuffiani, M, Dado, S, Dallavalle, GM, Dallison, S, de Roeck, A, de Wolf, EA, Desch, K, Dienes, B, Donkers, M, Dubbert, J, Duchovni, E, Duckeck, G, Duerdoth, IP, Elfgren, E, Etzion, E, Fabbri, F, Feld, L, Ferrari, P, Fiedler, F, Fleck, I, Ford, M, Frey, A, Fürtjes, A, Gagnon, P, Gary, JW, Gaycken, G, Geich-Gimbel, C, Giacomelli, G, Giacomelli, P, Giunta, M, Goldberg, J, Gross, E, Grunhaus, J, Gruwé, M, Günther, PO, Gupta, A, Hajdu, C, Hamann, M, Hanson, GG, Harder, K, Harel, A, Harin-Dirac, M, Hauschild, M, Hauschildt, J, Hawkes, CM, Hawkings, R, Hemingway, RJ, Hensel, C, Herten, G, Heuer, RD, Hill, JC, Hoffman, K, Homer, RJ, Horváth, D, Howard, R, Hüntemeyer, P, Igo-Kemenes, P, Ishii, K, Jeremie, H, Jovanovic, P, Junk, TR, Kanaya, N, Kanzaki, J, Karapetian, G, Karlen, D, Kartvelishvili, V, Kawagoe, K, Kawamoto, T, Keeler, RK, Kellogg, RG, Kennedy, BW, Kim, DH, Klein, K, Klier, A, Kluth, S, Kobayashi, T, Kobel, M, Komamiya, S, Kormos, L, Kowalewski, RV, Krämer, T, Kress, T, Krieger, P, von Krogh, J, Krop, D, Kruger, K, Kupper, M, Lafferty, GD, Landsman, H, Lanske, D, Layter, JG, Leins, A, Lellouch, D, Letts, J, Levinson, L, Lillich, J, Lloyd, SL, Loebinger, FK, Lu, J, Ludwig, J, Macpherson, A, Mader, W, Marcellini, S, Marchant, TE, Martin, AJ, Martin, JP, Masetti, G, Mashimo, T, Mättig, P, McDonald, WJ, McKenna, J, McMahon, TJ, McPherson, RA, Meijers, F, Mendez-Lorenzo, P, Menges, W, Merritt, FS, Mes, H, Michelini, A, Mihara, S, Mikenberg, G, Miller, DJ, Moed, S, Mohr, W, Mori, T, Mutter, A, Nagai, K, Nakamura, I, Neal, HA, Nisius, R, O'Neale, SW, Oh, A, Okpara, A, Oreglia, MJ, Orito, S, Pahl, C, Pásztor, G, Pater, JR, Patrick, GN, Pilcher, JE, Pinfold, J, Plane, DE, Poli, B, Polok, J, Pooth, O, Przybycień, M, Quadt, A, Rabbertz, K, Rembser, C, Renkel, P, Rick, H, Roney, JM, Rosati, S, Rozen, Y, Runge, K, Sachs, K, Saeki, T, Sahr, O, Sarkisyan, EKG, Schaile, AD, Schaile, O, Scharff-Hansen, P, Schieck, J, Schörner-Sadenius, T, Schröder, M, Schumacher, M, Schwick, C, Scott, WG, Seuster, R, Shears, TG, Shen, BC, Shepherd-Themistocleous, CH, Sherwood, P, Siroli, G, Skuja, A, Smith, AM, Sobie, R, Söldner-Rembold, S, Spagnolo, S, Spano, F, Stahl, A, Stephens, K, Strom, D, Ströhmer, R, Tarem, S, Tasevsky, M, Taylor, RJ, Teuscher, R, Thomson, MA, Torrence, E, Toya, D, Tran, P, Trefzger, T, Tricoli, A, Trigger, I, Trócsányi, Z, Tsur, E, Turner-Watson, MF, Ueda, I, Ujvári, B, Vachon, B, Vollmer, CF, Vannerem, P, Verzocchi, M, Voss, H, Vossebeld, J, Waller, D, Ward, CP, Ward, DR, Watkins, PM, Watson, AT, Watson, NK, Wells, PS, Wengler, T, Wermes, N, Wetterling, D, Wilson, GW, Wilson, JA, Wolf, G, Wyatt, TR, Yamashita, S, Zer-Zion, D & Zivkovic, L 2003, 'Multi-photon production in e⁺e^- collisions at √s =181-209 GeV: The opal collaboration', European Physical Journal C, vol. 26, no. 3, pp. 331-344. https://doi.org/10.1140/epjc/s2002-01074-5

TY - JOUR

T1 - Multi-photon production in e+e- collisions at √s =181-209 GeV

T2 - The opal collaboration

AU - Abbiendi, G.

AU - Ainsley, C.

AU - Åkesson, P. F.

AU - Alexander, G.

AU - Allison, J.

AU - Amaral, P.

AU - Anagnostou, G.

AU - Anderson, K. J.

AU - Arcelli, S.

AU - Asai, S.

AU - Axen, D.

AU - Azuelos, G.

AU - Bailey, I.

AU - Barberio, E.

AU - Barlow, R. J.

AU - Batley, R. J.

AU - Bechtle, P.

AU - Behnke, T.

AU - Bell, K. W.

AU - Bell, P. J.

AU - Bella, G.

AU - Bellerive, A.

AU - Benelli, G.

AU - Bethke, S.

AU - Biebel, O.

AU - Bloodworth, I. J.

AU - Boeriu, O.

AU - Bock, P.

AU - Bonacorsi, D.

AU - Boutemeur, M.

AU - Braibant, S.

AU - Brigliadori, L.

AU - Brown, R. M.

AU - Buesser, K.

AU - Burckhart, H. J.

AU - Campana, S.

AU - Carnegie, R. K.

AU - Caron, B.

AU - Carter, A. A.

AU - Carter, J. R.

AU - Chang, C. Y.

AU - Charlton, D. G.

AU - Csilling, A.

AU - Cuffiani, M.

AU - Dado, S.

AU - Dallavalle, G. M.

AU - Dallison, S.

AU - de Roeck, A.

AU - de Wolf, E. A.

AU - Desch, K.

AU - Dienes, B.

AU - Donkers, M.

AU - Dubbert, J.

AU - Duchovni, E.

AU - Duckeck, G.

AU - Duerdoth, I. P.

AU - Elfgren, E.

AU - Etzion, E.

AU - Fabbri, F.

AU - Feld, L.

AU - Ferrari, P.

AU - Fiedler, F.

AU - Fleck, I.

AU - Ford, M.

AU - Frey, A.

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PY - 2003/1

Y1 - 2003/1

N2 - The process e+e- → γγ(γ) is studied using data collected by the OPAL detector at LEP between the years 1997 and 2000. The data set corresponds to an integrated luminosity of 672.3 pb-1 at centre-of-mass energies lying between 181 GeV and 209 GeV. Total and differential cross-sections are determined and found to be in good agreement with the predictions of QED. Pits to the observed angular distributions are used to set limits on parameters from several models of physics beyond the Standard Model such as cut-off parameters, contact interactions of the type e+e-γγ, gravity in extra spatial dimensions and excited electrons. In events with three photons in the final state the mass spectrum of photon pairs is investigated. No narrow resonance X → γγ is found and limits are placed on the product of the Xγ production cross-section and branching ratio.

AB - The process e+e- → γγ(γ) is studied using data collected by the OPAL detector at LEP between the years 1997 and 2000. The data set corresponds to an integrated luminosity of 672.3 pb-1 at centre-of-mass energies lying between 181 GeV and 209 GeV. Total and differential cross-sections are determined and found to be in good agreement with the predictions of QED. Pits to the observed angular distributions are used to set limits on parameters from several models of physics beyond the Standard Model such as cut-off parameters, contact interactions of the type e+e-γγ, gravity in extra spatial dimensions and excited electrons. In events with three photons in the final state the mass spectrum of photon pairs is investigated. No narrow resonance X → γγ is found and limits are placed on the product of the Xγ production cross-section and branching ratio.

UR - http://www.scopus.com/inward/record.url?scp=0037279059&partnerID=8YFLogxK

U2 - 10.1140/epjc/s2002-01074-5

DO - 10.1140/epjc/s2002-01074-5

M3 - ???researchoutput.researchoutputtypes.contributiontojournal.article???

AN - SCOPUS:0037279059

SN - 1434-6044

VL - 26

SP - 331

EP - 344

JO - European Physical Journal C

JF - European Physical Journal C

IS - 3

ER -

Multi-photon production in e⁺e^- collisions at √s =181-209 GeV: The opal collaboration

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