A measurement of photon radiation in lepton pair events from Z0 decays

P. D. Acton, G. Alexander, J. Allison, P. P. Allport, K. J. Anderson, S. Arcelli, P. Ashton, A. Astbury, D. Axen, G. Azuelos, G. A. Bahan, J. T.M. Baines, A. H. Ball, J. Banks, G. J. Barker, R. J. Barlow, J. R. Batley, G. Beaudoin, A. Beck, J. Becker & 295 others T. Behnke, K. W. Bell, G. Bella, P. Berlich, S. Bethke, O. Biebel, U. Binder, I. J. Bloodworth, P. Bock, B. Boden, H. M. Bosch, S. Bougerolle, B. B. Brabson, H. Breuker, R. M. Brown, R. Brun, A. Buijs, H. J. Burckhart, P. Capiluppi, R. K. Carnegie, A. A. Carter, J. R. Carter, C. Y. Chang, D. G. Charlton, P. E.L. Clarke, I. Cohen, W. J. Collins, J. E. Conboy, M. Cooper, M. Couch, M. Coupland, M. Cuffiani, S. Dado, G. M. Dallavalle, S. De Jong, P. Debu, L. Del Pozo, M. M. Deninno, A. Dieckmann, M. Dittmar, M. S. Dixit, E. Duchovni, G. Duckeck, I. P. Duerdoth, D. J.P. Dumas, G. Eckerlin, P. A. Elcombe, P. G. Estabrooks, E. Etzion, F. Fabbri, M. Fincke-Keeler, H. M. Fischer, D. G. Fong, C. Fukunaga, A. Gaidot, O. Ganel, J. W. Gary, J. Gascon, R. F. McGowan, N. I. Geddes, C. Geich-Gimbel, S. W. Gensler, F. X. Gentit, G. Giacomelli, V. Gibson, W. R. Gibson, J. D. Gillies, J. Goldberg, M. J. Goodrick, W. Gorn, C. Grandi, F. C. Grant, J. Hagemann, G. G. Hanson, M. Hansroul, C. K. Hargrove, P. F. Harrison, J. Hart, P. M. Hattersley, M. Hauschild, C. M. Hawkes, E. Heflin, R. J. Hemingway, R. D. Heuer, J. C. Hill, S. J. Hillier, D. A. Hinshaw, C. Ho, J. D. Hobbs, P. R. Hobson, D. Hochman, B. Holl, R. J. Homer, A. K. Honma, S. R. Hou, C. P. Howarth, R. E. Hughes-Jones, R. Humbert, P. Igo-Kemenes, H. Ihssen, D. C. Imrie, A. C. Janissen, A. Jawahery, P. W. Jeffreys, H. Jeremie, M. Jimack, M. Jobes, R. W.L. Jones, P. Jovanovic, D. Karlen, K. Kawagoe, T. Kawamoto, R. K. Keeler, R. G. Kellogg, B. W. Kennedy, C. Kleinwort, D. E. Klem, T. Kobayashi, T. P. Kokott, Sachio Komamiya, L. Köpke, J. F. Kral, R. Kowalewski, H. Kreutzmann, J. von Krogh, J. Kroll, M. Kuwano, P. Kyberd, G. D. Lafferty, F. Lamarche, W. J. Larson, J. G. Layter, P. Le Du, P. Leblanc, A. M. Lee, M. H. Lehto, D. Lellouch, P. Lennert, C. Leroy, L. Lessard, J. Letts, S. Levegrün, L. Levinson, S. L. Lloyd, F. K. Loebinger, J. M. Lorah, B. Lorazo, M. J. Losty, X. C. Lou, J. Ludwig, M. Mannelli, S. Marcellini, G. Maringer, A. J. Martin, J. P. Martin, T. Mashimo, P. Mättig, U. Maur, J. McKenna, T. J. McMahon, J. R. McNutt, F. Meijers, D. Menszner, F. S. Merritt, H. Mes, A. Michelini, R. P. Middleton, G. Mikenberg, J. Mildenberger, D. J. Miller, R. Mir, W. Mohr, C. Moisan, A. Montanari, T. Mori, M. W. Moss, T. Mouthuy, B. Nellen, H. H. Nguyen, M. Nozaki, S. W. O'Neale, B. P. O'Neill, F. G. Oakham, F. Odorici, M. Ogg, H. O. Ogren, H. Oh, C. J. Oram, M. J. Oreglia, S. Orito, J. P. Pansart, B. Panzer-Steindel, P. Paschievici, G. N. Patrick, S. J. Pawley, P. Pfister, J. E. Pilcher, J. L. Pinfold, D. Pitman, D. E. Plane, P. Poffenberger, B. Poli, A. Pouladdej, E. Prebys, T. W. Pritchard, H. Przysiezniak, G. Quast, M. W. Redmond, D. L. Rees, K. Riles, S. A. Robins, D. Robinson, A. Rollnik, J. M. Roney, E. Ros, S. Rossberg, A. M. Rossi, M. Rosvick, P. Routenburg, K. Runge, O. Runolfsson, D. R. Rust, S. Sanghera, M. Sasaki, A. D. Schaile, O. Schaile, W. Schappert, P. Scharff-Hansen, P. Schenk, H. von der Schmitt, S. Schreiber, J. Schwiening, W. G. Scott, M. Settles, B. C. Shen, P. Sherwood, R. Shypit, A. Simon, P. Singh, G. P. Siroli, A. Skuja, A. M. Smith, T. J. Smith, G. A. Snow, R. Sobie, R. W. Springer, M. Sproston, K. Stephens, H. E. Stier, R. Ströhmer, D. Strom, H. Takeda, T. Takeshita, P. Taras, S. Tarem, P. Teixeira-Dias, N. J. Thackray, G. Transtromer, T. Tsukamoto, M. F. Turner, G. Tysarczyk-Niemeyer, D. Van den plas, R. Van Kooten, G. J. VanDalen, G. Vasseur, C. J. Virtue, A. Wagner, C. Wahl, J. P. Walker, C. P. Ward, D. R. Ward, P. M. Watkins, A. T. Watson, N. K. Watson, M. Weber, P. Weber, S. Weisz, P. S. Wells, N. Wermes, M. Weymann, M. A. Whalley, G. W. Wilson, J. A. Wilson, I. Wingerter, V. H. Winterer, N. C. Wood, S. Wotton, T. R. Wyatt, R. Yaari, Y. Yang, G. Yekutieli, M. Yurko, I. Zacharov, W. Zeuner, G. T. Zorn

Research output: Contribution to journalArticle

28 Citations (Scopus)

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 ±8 6 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.

Original languageEnglish
Pages (from-to)338-354
Number of pages17
JournalPhysics Letters B
Volume273
Issue number3
DOIs
Publication statusPublished - 1991 Dec 19
Externally publishedYes

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leptons
photons
decay
radiation
center of mass
cross sections
luminosity
momentum
energy
detectors

ASJC Scopus subject areas

  • Nuclear and High Energy Physics

Cite this

Acton, P. D., Alexander, G., Allison, J., Allport, P. P., Anderson, K. J., Arcelli, S., ... Zorn, G. T. (1991). A measurement of photon radiation in lepton pair events from Z0 decays. Physics Letters B, 273(3), 338-354. https://doi.org/10.1016/0370-2693(91)91694-Q

A measurement of photon radiation in lepton pair events from Z0 decays. / Acton, P. D.; Alexander, G.; Allison, J.; Allport, P. P.; Anderson, K. J.; Arcelli, S.; Ashton, P.; Astbury, A.; Axen, D.; Azuelos, G.; Bahan, G. A.; Baines, J. T.M.; Ball, A. H.; Banks, J.; Barker, G. J.; Barlow, R. J.; Batley, J. R.; Beaudoin, G.; Beck, A.; Becker, J.; Behnke, T.; Bell, K. W.; Bella, G.; Berlich, P.; Bethke, S.; Biebel, O.; Binder, U.; Bloodworth, I. J.; Bock, P.; Boden, B.; Bosch, H. M.; Bougerolle, S.; Brabson, B. B.; Breuker, H.; Brown, R. M.; Brun, R.; Buijs, A.; Burckhart, H. J.; Capiluppi, P.; Carnegie, R. K.; Carter, A. A.; Carter, J. R.; Chang, C. Y.; Charlton, D. G.; Clarke, P. E.L.; Cohen, I.; Collins, W. J.; Conboy, J. E.; Cooper, M.; Couch, M.; Coupland, M.; Cuffiani, M.; Dado, S.; Dallavalle, G. M.; De Jong, S.; Debu, P.; Del Pozo, L.; Deninno, M. M.; Dieckmann, A.; Dittmar, M.; Dixit, M. S.; Duchovni, E.; Duckeck, G.; Duerdoth, I. P.; Dumas, D. J.P.; Eckerlin, G.; Elcombe, P. A.; Estabrooks, P. G.; Etzion, E.; Fabbri, F.; Fincke-Keeler, M.; Fischer, H. M.; Fong, D. G.; Fukunaga, C.; Gaidot, A.; Ganel, O.; Gary, J. W.; Gascon, J.; McGowan, R. F.; Geddes, N. I.; Geich-Gimbel, C.; Gensler, S. W.; Gentit, F. X.; Giacomelli, G.; Gibson, V.; Gibson, W. R.; Gillies, J. D.; Goldberg, J.; Goodrick, M. J.; Gorn, W.; Grandi, C.; Grant, F. C.; Hagemann, J.; Hanson, G. G.; Hansroul, M.; Hargrove, C. K.; Harrison, P. F.; Hart, J.; Hattersley, P. M.; Hauschild, M.; Hawkes, C. M.; Heflin, E.; Hemingway, R. J.; Heuer, R. D.; Hill, J. C.; Hillier, S. J.; Hinshaw, D. A.; Ho, C.; Hobbs, J. D.; Hobson, P. R.; Hochman, D.; Holl, B.; Homer, R. J.; Honma, A. K.; Hou, S. R.; Howarth, C. P.; Hughes-Jones, R. E.; Humbert, R.; Igo-Kemenes, P.; Ihssen, H.; Imrie, D. C.; Janissen, A. C.; Jawahery, A.; Jeffreys, P. W.; Jeremie, H.; Jimack, M.; Jobes, M.; Jones, R. W.L.; Jovanovic, P.; Karlen, D.; Kawagoe, K.; Kawamoto, T.; Keeler, R. K.; Kellogg, R. G.; Kennedy, B. W.; Kleinwort, C.; Klem, D. E.; Kobayashi, T.; Kokott, T. P.; Komamiya, Sachio; Köpke, L.; Kral, J. F.; Kowalewski, R.; Kreutzmann, H.; von Krogh, J.; Kroll, J.; Kuwano, M.; Kyberd, P.; Lafferty, G. D.; Lamarche, F.; Larson, W. J.; Layter, J. G.; Le Du, P.; Leblanc, P.; Lee, A. M.; Lehto, M. H.; Lellouch, D.; Lennert, P.; Leroy, C.; Lessard, L.; Letts, J.; Levegrün, S.; Levinson, L.; Lloyd, S. L.; Loebinger, F. K.; Lorah, J. M.; Lorazo, B.; Losty, M. J.; Lou, X. C.; Ludwig, J.; Mannelli, M.; Marcellini, S.; Maringer, G.; Martin, A. J.; Martin, J. P.; Mashimo, T.; Mättig, P.; Maur, U.; McKenna, J.; McMahon, T. J.; McNutt, J. R.; Meijers, F.; Menszner, D.; Merritt, F. S.; Mes, H.; Michelini, A.; Middleton, R. P.; Mikenberg, G.; Mildenberger, J.; Miller, D. J.; Mir, R.; Mohr, W.; Moisan, C.; Montanari, A.; Mori, T.; Moss, M. W.; Mouthuy, T.; Nellen, B.; Nguyen, H. H.; Nozaki, M.; O'Neale, S. W.; O'Neill, B. P.; Oakham, F. G.; Odorici, F.; Ogg, M.; Ogren, H. O.; Oh, H.; Oram, C. J.; Oreglia, M. J.; Orito, S.; Pansart, J. P.; Panzer-Steindel, B.; Paschievici, P.; Patrick, G. N.; Pawley, S. J.; Pfister, P.; Pilcher, J. E.; Pinfold, J. L.; Pitman, D.; Plane, D. E.; Poffenberger, P.; Poli, B.; Pouladdej, A.; Prebys, E.; Pritchard, T. W.; Przysiezniak, H.; Quast, G.; Redmond, M. W.; Rees, D. L.; Riles, K.; Robins, S. A.; Robinson, D.; Rollnik, A.; Roney, J. M.; Ros, E.; Rossberg, S.; Rossi, A. M.; Rosvick, M.; Routenburg, P.; Runge, K.; Runolfsson, O.; Rust, D. R.; Sanghera, S.; Sasaki, M.; Schaile, A. D.; Schaile, O.; Schappert, W.; Scharff-Hansen, P.; Schenk, P.; von der Schmitt, H.; Schreiber, S.; Schwiening, J.; Scott, W. G.; Settles, M.; Shen, B. C.; Sherwood, P.; Shypit, R.; Simon, A.; Singh, P.; Siroli, G. P.; Skuja, A.; Smith, A. M.; Smith, T. J.; Snow, G. A.; Sobie, R.; Springer, R. W.; Sproston, M.; Stephens, K.; Stier, H. E.; Ströhmer, R.; Strom, D.; Takeda, H.; Takeshita, T.; Taras, P.; Tarem, S.; Teixeira-Dias, P.; Thackray, N. J.; Transtromer, G.; Tsukamoto, T.; Turner, M. F.; Tysarczyk-Niemeyer, G.; Van den plas, D.; Van Kooten, R.; VanDalen, G. J.; Vasseur, G.; Virtue, C. J.; Wagner, A.; Wahl, C.; Walker, J. P.; Ward, C. P.; Ward, D. R.; Watkins, P. M.; Watson, A. T.; Watson, N. K.; Weber, M.; Weber, P.; Weisz, S.; Wells, P. S.; Wermes, N.; Weymann, M.; Whalley, M. A.; Wilson, G. W.; Wilson, J. A.; Wingerter, I.; Winterer, V. H.; Wood, N. C.; Wotton, S.; Wyatt, T. R.; Yaari, R.; Yang, Y.; Yekutieli, G.; Yurko, M.; Zacharov, I.; Zeuner, W.; Zorn, G. T.

In: Physics Letters B, Vol. 273, No. 3, 19.12.1991, p. 338-354.

Research output: Contribution to journalArticle

Acton, PD, Alexander, G, Allison, J, Allport, PP, Anderson, KJ, Arcelli, S, Ashton, P, Astbury, A, Axen, D, Azuelos, G, Bahan, GA, Baines, JTM, Ball, AH, Banks, J, Barker, GJ, Barlow, RJ, Batley, JR, Beaudoin, G, Beck, A, Becker, J, Behnke, T, Bell, KW, Bella, G, Berlich, P, Bethke, S, Biebel, O, Binder, U, Bloodworth, IJ, Bock, P, Boden, B, Bosch, HM, Bougerolle, S, Brabson, BB, Breuker, H, Brown, RM, Brun, R, Buijs, A, Burckhart, HJ, Capiluppi, P, Carnegie, RK, Carter, AA, Carter, JR, Chang, CY, Charlton, DG, Clarke, PEL, Cohen, I, Collins, WJ, Conboy, JE, Cooper, M, Couch, M, Coupland, M, Cuffiani, M, Dado, S, Dallavalle, GM, De Jong, S, Debu, P, Del Pozo, L, Deninno, MM, Dieckmann, A, Dittmar, M, Dixit, MS, Duchovni, E, Duckeck, G, Duerdoth, IP, Dumas, DJP, Eckerlin, G, Elcombe, PA, Estabrooks, PG, Etzion, E, Fabbri, F, Fincke-Keeler, M, Fischer, HM, Fong, DG, Fukunaga, C, Gaidot, A, Ganel, O, Gary, JW, Gascon, J, McGowan, RF, Geddes, NI, Geich-Gimbel, C, Gensler, SW, Gentit, FX, Giacomelli, G, Gibson, V, Gibson, WR, Gillies, JD, Goldberg, J, Goodrick, MJ, Gorn, W, Grandi, C, Grant, FC, Hagemann, J, Hanson, GG, Hansroul, M, Hargrove, CK, Harrison, PF, Hart, J, Hattersley, PM, Hauschild, M, Hawkes, CM, Heflin, E, Hemingway, RJ, Heuer, RD, Hill, JC, Hillier, SJ, Hinshaw, DA, Ho, C, Hobbs, JD, Hobson, PR, Hochman, D, Holl, B, Homer, RJ, Honma, AK, Hou, SR, Howarth, CP, Hughes-Jones, RE, Humbert, R, Igo-Kemenes, P, Ihssen, H, Imrie, DC, Janissen, AC, Jawahery, A, Jeffreys, PW, Jeremie, H, Jimack, M, Jobes, M, Jones, RWL, Jovanovic, P, Karlen, D, Kawagoe, K, Kawamoto, T, Keeler, RK, Kellogg, RG, Kennedy, BW, Kleinwort, C, Klem, DE, Kobayashi, T, Kokott, TP, Komamiya, S, Köpke, L, Kral, JF, Kowalewski, R, Kreutzmann, H, von Krogh, J, Kroll, J, Kuwano, M, Kyberd, P, Lafferty, GD, Lamarche, F, Larson, WJ, Layter, JG, Le Du, P, Leblanc, P, Lee, AM, Lehto, MH, Lellouch, D, Lennert, P, Leroy, C, Lessard, L, Letts, J, Levegrün, S, Levinson, L, Lloyd, SL, Loebinger, FK, Lorah, JM, Lorazo, B, Losty, MJ, Lou, XC, Ludwig, J, Mannelli, M, Marcellini, S, Maringer, G, Martin, AJ, Martin, JP, Mashimo, T, Mättig, P, Maur, U, McKenna, J, McMahon, TJ, McNutt, JR, Meijers, F, Menszner, D, Merritt, FS, Mes, H, Michelini, A, Middleton, RP, Mikenberg, G, Mildenberger, J, Miller, DJ, Mir, R, Mohr, W, Moisan, C, Montanari, A, Mori, T, Moss, MW, Mouthuy, T, Nellen, B, Nguyen, HH, Nozaki, M, O'Neale, SW, O'Neill, BP, Oakham, FG, Odorici, F, Ogg, M, Ogren, HO, Oh, H, Oram, CJ, Oreglia, MJ, Orito, S, Pansart, JP, Panzer-Steindel, B, Paschievici, P, Patrick, GN, Pawley, SJ, Pfister, P, Pilcher, JE, Pinfold, JL, Pitman, D, Plane, DE, Poffenberger, P, Poli, B, Pouladdej, A, Prebys, E, Pritchard, TW, Przysiezniak, H, Quast, G, Redmond, MW, Rees, DL, Riles, K, Robins, SA, Robinson, D, Rollnik, A, Roney, JM, Ros, E, Rossberg, S, Rossi, AM, Rosvick, M, Routenburg, P, Runge, K, Runolfsson, O, Rust, DR, Sanghera, S, Sasaki, M, Schaile, AD, Schaile, O, Schappert, W, Scharff-Hansen, P, Schenk, P, von der Schmitt, H, Schreiber, S, Schwiening, J, Scott, WG, Settles, M, Shen, BC, Sherwood, P, Shypit, R, Simon, A, Singh, P, Siroli, GP, Skuja, A, Smith, AM, Smith, TJ, Snow, GA, Sobie, R, Springer, RW, Sproston, M, Stephens, K, Stier, HE, Ströhmer, R, Strom, D, Takeda, H, Takeshita, T, Taras, P, Tarem, S, Teixeira-Dias, P, Thackray, NJ, Transtromer, G, Tsukamoto, T, Turner, MF, Tysarczyk-Niemeyer, G, Van den plas, D, Van Kooten, R, VanDalen, GJ, Vasseur, G, Virtue, CJ, Wagner, A, Wahl, C, Walker, JP, Ward, CP, Ward, DR, Watkins, PM, Watson, AT, Watson, NK, Weber, M, Weber, P, Weisz, S, Wells, PS, Wermes, N, Weymann, M, Whalley, MA, Wilson, GW, Wilson, JA, Wingerter, I, Winterer, VH, Wood, NC, Wotton, S, Wyatt, TR, Yaari, R, Yang, Y, Yekutieli, G, Yurko, M, Zacharov, I, Zeuner, W & Zorn, GT 1991, 'A measurement of photon radiation in lepton pair events from Z0 decays', Physics Letters B, vol. 273, no. 3, pp. 338-354. https://doi.org/10.1016/0370-2693(91)91694-Q
Acton PD, Alexander G, Allison J, Allport PP, Anderson KJ, Arcelli S et al. A measurement of photon radiation in lepton pair events from Z0 decays. Physics Letters B. 1991 Dec 19;273(3):338-354. https://doi.org/10.1016/0370-2693(91)91694-Q
Acton, P. D. ; Alexander, G. ; Allison, J. ; Allport, P. P. ; Anderson, K. J. ; Arcelli, S. ; Ashton, P. ; Astbury, A. ; Axen, D. ; Azuelos, G. ; Bahan, G. A. ; Baines, J. T.M. ; Ball, A. H. ; Banks, J. ; Barker, G. J. ; Barlow, R. J. ; Batley, J. R. ; Beaudoin, G. ; Beck, A. ; Becker, J. ; Behnke, T. ; Bell, K. W. ; Bella, G. ; Berlich, P. ; Bethke, S. ; Biebel, O. ; Binder, U. ; Bloodworth, I. J. ; Bock, P. ; Boden, B. ; Bosch, H. M. ; Bougerolle, S. ; Brabson, B. B. ; Breuker, H. ; Brown, R. M. ; Brun, R. ; Buijs, A. ; Burckhart, H. J. ; Capiluppi, P. ; Carnegie, R. K. ; Carter, A. A. ; Carter, J. R. ; Chang, C. Y. ; Charlton, D. G. ; Clarke, P. E.L. ; Cohen, I. ; Collins, W. J. ; Conboy, J. E. ; Cooper, M. ; Couch, M. ; Coupland, M. ; Cuffiani, M. ; Dado, S. ; Dallavalle, G. M. ; De Jong, S. ; Debu, P. ; Del Pozo, L. ; Deninno, M. M. ; Dieckmann, A. ; Dittmar, M. ; Dixit, M. S. ; Duchovni, E. ; Duckeck, G. ; Duerdoth, I. P. ; Dumas, D. J.P. ; Eckerlin, G. ; Elcombe, P. A. ; Estabrooks, P. G. ; Etzion, E. ; Fabbri, F. ; Fincke-Keeler, M. ; Fischer, H. M. ; Fong, D. G. ; Fukunaga, C. ; Gaidot, A. ; Ganel, O. ; Gary, J. W. ; Gascon, J. ; McGowan, R. F. ; Geddes, N. I. ; Geich-Gimbel, C. ; Gensler, S. W. ; Gentit, F. X. ; Giacomelli, G. ; Gibson, V. ; Gibson, W. R. ; Gillies, J. D. ; Goldberg, J. ; Goodrick, M. J. ; Gorn, W. ; Grandi, C. ; Grant, F. C. ; Hagemann, J. ; Hanson, G. G. ; Hansroul, M. ; Hargrove, C. K. ; Harrison, P. F. ; Hart, J. ; Hattersley, P. M. ; Hauschild, M. ; Hawkes, C. M. ; Heflin, E. ; Hemingway, R. J. ; Heuer, R. D. ; Hill, J. C. ; Hillier, S. J. ; Hinshaw, D. A. ; Ho, C. ; Hobbs, J. D. ; Hobson, P. R. ; Hochman, D. ; Holl, B. ; Homer, R. J. ; Honma, A. K. ; Hou, S. R. ; Howarth, C. P. ; Hughes-Jones, R. E. ; Humbert, R. ; Igo-Kemenes, P. ; Ihssen, H. ; Imrie, D. C. ; Janissen, A. C. ; Jawahery, A. ; Jeffreys, P. W. ; Jeremie, H. ; Jimack, M. ; Jobes, M. ; Jones, R. W.L. ; Jovanovic, P. ; Karlen, D. ; Kawagoe, K. ; Kawamoto, T. ; Keeler, R. K. ; Kellogg, R. G. ; Kennedy, B. W. ; Kleinwort, C. ; Klem, D. E. ; Kobayashi, T. ; Kokott, T. P. ; Komamiya, Sachio ; Köpke, L. ; Kral, J. F. ; Kowalewski, R. ; Kreutzmann, H. ; von Krogh, J. ; Kroll, J. ; Kuwano, M. ; Kyberd, P. ; Lafferty, G. D. ; Lamarche, F. ; Larson, W. J. ; Layter, J. G. ; Le Du, P. ; Leblanc, P. ; Lee, A. M. ; Lehto, M. H. ; Lellouch, D. ; Lennert, P. ; Leroy, C. ; Lessard, L. ; Letts, J. ; Levegrün, S. ; Levinson, L. ; Lloyd, S. L. ; Loebinger, F. K. ; Lorah, J. M. ; Lorazo, B. ; Losty, M. J. ; Lou, X. C. ; Ludwig, J. ; Mannelli, M. ; Marcellini, S. ; Maringer, G. ; Martin, A. J. ; Martin, J. P. ; Mashimo, T. ; Mättig, P. ; Maur, U. ; McKenna, J. ; McMahon, T. J. ; McNutt, J. R. ; Meijers, F. ; Menszner, D. ; Merritt, F. S. ; Mes, H. ; Michelini, A. ; Middleton, R. P. ; Mikenberg, G. ; Mildenberger, J. ; Miller, D. J. ; Mir, R. ; Mohr, W. ; Moisan, C. ; Montanari, A. ; Mori, T. ; Moss, M. W. ; Mouthuy, T. ; Nellen, B. ; Nguyen, H. H. ; Nozaki, M. ; O'Neale, S. W. ; O'Neill, B. P. ; Oakham, F. G. ; Odorici, F. ; Ogg, M. ; Ogren, H. O. ; Oh, H. ; Oram, C. J. ; Oreglia, M. J. ; Orito, S. ; Pansart, J. P. ; Panzer-Steindel, B. ; Paschievici, P. ; Patrick, G. N. ; Pawley, S. J. ; Pfister, P. ; Pilcher, J. E. ; Pinfold, J. L. ; Pitman, D. ; Plane, D. E. ; Poffenberger, P. ; Poli, B. ; Pouladdej, A. ; Prebys, E. ; Pritchard, T. W. ; Przysiezniak, H. ; Quast, G. ; Redmond, M. W. ; Rees, D. L. ; Riles, K. ; Robins, S. A. ; Robinson, D. ; Rollnik, A. ; Roney, J. M. ; Ros, E. ; Rossberg, S. ; Rossi, A. M. ; Rosvick, M. ; Routenburg, P. ; Runge, K. ; Runolfsson, O. ; Rust, D. R. ; Sanghera, S. ; Sasaki, M. ; Schaile, A. D. ; Schaile, O. ; Schappert, W. ; Scharff-Hansen, P. ; Schenk, P. ; von der Schmitt, H. ; Schreiber, S. ; Schwiening, J. ; Scott, W. G. ; Settles, M. ; Shen, B. C. ; Sherwood, P. ; Shypit, R. ; Simon, A. ; Singh, P. ; Siroli, G. P. ; Skuja, A. ; Smith, A. M. ; Smith, T. J. ; Snow, G. A. ; Sobie, R. ; Springer, R. W. ; Sproston, M. ; Stephens, K. ; Stier, H. E. ; Ströhmer, R. ; Strom, D. ; Takeda, H. ; Takeshita, T. ; Taras, P. ; Tarem, S. ; Teixeira-Dias, P. ; Thackray, N. J. ; Transtromer, G. ; Tsukamoto, T. ; Turner, M. F. ; Tysarczyk-Niemeyer, G. ; Van den plas, D. ; Van Kooten, R. ; VanDalen, G. J. ; Vasseur, G. ; Virtue, C. J. ; Wagner, A. ; Wahl, C. ; Walker, J. P. ; Ward, C. P. ; Ward, D. R. ; Watkins, P. M. ; Watson, A. T. ; Watson, N. K. ; Weber, M. ; Weber, P. ; Weisz, S. ; Wells, P. S. ; Wermes, N. ; Weymann, M. ; Whalley, M. A. ; Wilson, G. W. ; Wilson, J. A. ; Wingerter, I. ; Winterer, V. H. ; Wood, N. C. ; Wotton, S. ; Wyatt, T. R. ; Yaari, R. ; Yang, Y. ; Yekutieli, G. ; Yurko, M. ; Zacharov, I. ; Zeuner, W. ; Zorn, G. T. / A measurement of photon radiation in lepton pair events from Z0 decays. In: Physics Letters B. 1991 ; Vol. 273, No. 3. pp. 338-354.
@article{16512f18fc5045c8a813d9e3aef4b446,
title = "A measurement of photon radiation in lepton pair events from Z0 decays",
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 ±8 6 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.",
author = "Acton, {P. D.} and G. Alexander and J. Allison and Allport, {P. P.} and Anderson, {K. J.} and S. Arcelli and P. Ashton and A. Astbury and D. Axen and G. Azuelos and Bahan, {G. A.} and Baines, {J. T.M.} and Ball, {A. H.} and J. Banks and Barker, {G. J.} and Barlow, {R. J.} and Batley, {J. R.} and G. Beaudoin and A. Beck and J. Becker and T. Behnke and Bell, {K. W.} and G. Bella and P. Berlich and S. Bethke and O. Biebel and U. Binder and Bloodworth, {I. J.} and P. Bock and B. Boden and Bosch, {H. M.} and S. Bougerolle and Brabson, {B. B.} and H. Breuker and Brown, {R. M.} and R. Brun and A. Buijs and Burckhart, {H. J.} and P. Capiluppi and Carnegie, {R. K.} and Carter, {A. A.} and Carter, {J. R.} and Chang, {C. Y.} and Charlton, {D. G.} and Clarke, {P. E.L.} and I. Cohen and Collins, {W. J.} and Conboy, {J. E.} and M. Cooper and M. Couch and M. Coupland and M. Cuffiani and S. Dado and Dallavalle, {G. M.} and {De Jong}, S. and P. Debu and {Del Pozo}, L. and Deninno, {M. M.} and A. Dieckmann and M. Dittmar and Dixit, {M. S.} and E. Duchovni and G. Duckeck and Duerdoth, {I. P.} and Dumas, {D. J.P.} and G. Eckerlin and Elcombe, {P. A.} and Estabrooks, {P. G.} and E. Etzion and F. Fabbri and M. Fincke-Keeler and Fischer, {H. M.} and Fong, {D. G.} and C. Fukunaga and A. Gaidot and O. Ganel and Gary, {J. W.} and J. Gascon and McGowan, {R. F.} and Geddes, {N. I.} and C. Geich-Gimbel and Gensler, {S. W.} and Gentit, {F. X.} and G. Giacomelli and V. Gibson and Gibson, {W. R.} and Gillies, {J. D.} and J. Goldberg and Goodrick, {M. J.} and W. Gorn and C. Grandi and Grant, {F. C.} and J. Hagemann and Hanson, {G. G.} and M. Hansroul and Hargrove, {C. K.} and Harrison, {P. F.} and J. Hart and Hattersley, {P. M.} and M. Hauschild and Hawkes, {C. M.} and E. Heflin and Hemingway, {R. J.} and Heuer, {R. D.} and Hill, {J. C.} and Hillier, {S. J.} and Hinshaw, {D. A.} and C. Ho and Hobbs, {J. D.} and Hobson, {P. R.} and D. Hochman and B. Holl and Homer, {R. J.} and Honma, {A. K.} and Hou, {S. R.} and Howarth, {C. P.} and Hughes-Jones, {R. E.} and R. Humbert and P. Igo-Kemenes and H. Ihssen and Imrie, {D. C.} and Janissen, {A. C.} and A. Jawahery and Jeffreys, {P. W.} and H. Jeremie and M. Jimack and M. Jobes and Jones, {R. W.L.} and P. Jovanovic and D. Karlen and K. Kawagoe and T. Kawamoto and Keeler, {R. K.} and Kellogg, {R. G.} and Kennedy, {B. W.} and C. Kleinwort and Klem, {D. E.} and T. Kobayashi and Kokott, {T. P.} and Sachio Komamiya and L. K{\"o}pke and Kral, {J. F.} and R. Kowalewski and H. Kreutzmann and {von Krogh}, J. and J. Kroll and M. Kuwano and P. Kyberd and Lafferty, {G. D.} and F. Lamarche and Larson, {W. J.} and Layter, {J. G.} and {Le Du}, P. and P. Leblanc and Lee, {A. M.} and Lehto, {M. H.} and D. Lellouch and P. Lennert and C. Leroy and L. Lessard and J. Letts and S. Levegr{\"u}n and L. Levinson and Lloyd, {S. L.} and Loebinger, {F. K.} and Lorah, {J. M.} and B. Lorazo and Losty, {M. J.} and Lou, {X. C.} and J. Ludwig and M. Mannelli and S. Marcellini and G. Maringer and Martin, {A. J.} and Martin, {J. P.} and T. Mashimo and P. M{\"a}ttig and U. Maur and J. McKenna and McMahon, {T. J.} and McNutt, {J. R.} and F. Meijers and D. Menszner and Merritt, {F. S.} and H. Mes and A. Michelini and Middleton, {R. P.} and G. Mikenberg and J. Mildenberger and Miller, {D. J.} and R. Mir and W. Mohr and C. Moisan and A. Montanari and T. Mori and Moss, {M. W.} and T. Mouthuy and B. Nellen and Nguyen, {H. H.} and M. Nozaki and O'Neale, {S. W.} and O'Neill, {B. P.} and Oakham, {F. G.} and F. Odorici and M. Ogg and Ogren, {H. O.} and H. Oh and Oram, {C. J.} and Oreglia, {M. J.} and S. Orito and Pansart, {J. P.} and B. Panzer-Steindel and P. Paschievici and Patrick, {G. N.} and Pawley, {S. J.} and P. Pfister and Pilcher, {J. E.} and Pinfold, {J. L.} and D. Pitman and Plane, {D. E.} and P. Poffenberger and B. Poli and A. Pouladdej and E. Prebys and Pritchard, {T. W.} and H. Przysiezniak and G. Quast and Redmond, {M. W.} and Rees, {D. L.} and K. Riles and Robins, {S. A.} and D. Robinson and A. Rollnik and Roney, {J. M.} and E. Ros and S. Rossberg and Rossi, {A. M.} and M. Rosvick and P. Routenburg and K. Runge and O. Runolfsson and Rust, {D. R.} and S. Sanghera and M. Sasaki and Schaile, {A. D.} and O. Schaile and W. Schappert and P. Scharff-Hansen and P. Schenk and {von der Schmitt}, H. and S. Schreiber and J. Schwiening and Scott, {W. G.} and M. Settles and Shen, {B. C.} and P. Sherwood and R. Shypit and A. Simon and P. Singh and Siroli, {G. P.} and A. Skuja and Smith, {A. M.} and Smith, {T. J.} and Snow, {G. A.} and R. Sobie and Springer, {R. W.} and M. Sproston and K. Stephens and Stier, {H. E.} and R. Str{\"o}hmer and D. Strom and H. Takeda and T. Takeshita and P. Taras and S. Tarem and P. Teixeira-Dias and Thackray, {N. J.} and G. Transtromer and T. Tsukamoto and Turner, {M. F.} and G. Tysarczyk-Niemeyer and {Van den plas}, D. and {Van Kooten}, R. and VanDalen, {G. J.} and G. Vasseur and Virtue, {C. J.} and A. Wagner and C. Wahl and Walker, {J. P.} and Ward, {C. P.} and Ward, {D. R.} and Watkins, {P. M.} and Watson, {A. T.} and Watson, {N. K.} and M. Weber and P. Weber and S. Weisz and Wells, {P. S.} and N. Wermes and M. Weymann and Whalley, {M. A.} and Wilson, {G. W.} and Wilson, {J. A.} and I. Wingerter and Winterer, {V. H.} and Wood, {N. C.} and S. Wotton and Wyatt, {T. R.} and R. Yaari and Y. Yang and G. Yekutieli and M. Yurko and I. Zacharov and W. Zeuner and Zorn, {G. T.}",
year = "1991",
month = "12",
day = "19",
doi = "10.1016/0370-2693(91)91694-Q",
language = "English",
volume = "273",
pages = "338--354",
journal = "Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics",
issn = "0370-2693",
publisher = "Elsevier",
number = "3",

}

TY - JOUR

T1 - A measurement of photon radiation in lepton pair events from Z0 decays

AU - Acton, P. D.

AU - Alexander, G.

AU - Allison, J.

AU - Allport, P. P.

AU - Anderson, K. J.

AU - Arcelli, S.

AU - Ashton, P.

AU - Astbury, A.

AU - Axen, D.

AU - Azuelos, G.

AU - Bahan, G. A.

AU - Baines, J. T.M.

AU - Ball, A. H.

AU - Banks, J.

AU - Barker, G. J.

AU - Barlow, R. J.

AU - Batley, J. R.

AU - Beaudoin, G.

AU - Beck, A.

AU - Becker, J.

AU - Behnke, T.

AU - Bell, K. W.

AU - Bella, G.

AU - Berlich, P.

AU - Bethke, S.

AU - Biebel, O.

AU - Binder, U.

AU - Bloodworth, I. J.

AU - Bock, P.

AU - Boden, B.

AU - Bosch, H. M.

AU - Bougerolle, S.

AU - Brabson, B. B.

AU - Breuker, H.

AU - Brown, R. M.

AU - Brun, R.

AU - Buijs, A.

AU - Burckhart, H. J.

AU - Capiluppi, P.

AU - Carnegie, R. K.

AU - Carter, A. A.

AU - Carter, J. R.

AU - Chang, C. Y.

AU - Charlton, D. G.

AU - Clarke, P. E.L.

AU - Cohen, I.

AU - Collins, W. J.

AU - Conboy, J. E.

AU - Cooper, M.

AU - Couch, M.

AU - Coupland, M.

AU - Cuffiani, M.

AU - Dado, S.

AU - Dallavalle, G. M.

AU - De Jong, S.

AU - Debu, P.

AU - Del Pozo, L.

AU - Deninno, M. M.

AU - Dieckmann, A.

AU - Dittmar, M.

AU - Dixit, M. S.

AU - Duchovni, E.

AU - Duckeck, G.

AU - Duerdoth, I. P.

AU - Dumas, D. J.P.

AU - Eckerlin, G.

AU - Elcombe, P. A.

AU - Estabrooks, P. G.

AU - Etzion, E.

AU - Fabbri, F.

AU - Fincke-Keeler, M.

AU - Fischer, H. M.

AU - Fong, D. G.

AU - Fukunaga, C.

AU - Gaidot, A.

AU - Ganel, O.

AU - Gary, J. W.

AU - Gascon, J.

AU - McGowan, R. F.

AU - Geddes, N. I.

AU - Geich-Gimbel, C.

AU - Gensler, S. W.

AU - Gentit, F. X.

AU - Giacomelli, G.

AU - Gibson, V.

AU - Gibson, W. R.

AU - Gillies, J. D.

AU - Goldberg, J.

AU - Goodrick, M. J.

AU - Gorn, W.

AU - Grandi, C.

AU - Grant, F. C.

AU - Hagemann, J.

AU - Hanson, G. G.

AU - Hansroul, M.

AU - Hargrove, C. K.

AU - Harrison, P. F.

AU - Hart, J.

AU - Hattersley, P. M.

AU - Hauschild, M.

AU - Hawkes, C. M.

AU - Heflin, E.

AU - Hemingway, R. J.

AU - Heuer, R. D.

AU - Hill, J. C.

AU - Hillier, S. J.

AU - Hinshaw, D. A.

AU - Ho, C.

AU - Hobbs, J. D.

AU - Hobson, P. R.

AU - Hochman, D.

AU - Holl, B.

AU - Homer, R. J.

AU - Honma, A. K.

AU - Hou, S. R.

AU - Howarth, C. P.

AU - Hughes-Jones, R. E.

AU - Humbert, R.

AU - Igo-Kemenes, P.

AU - Ihssen, H.

AU - Imrie, D. C.

AU - Janissen, A. C.

AU - Jawahery, A.

AU - Jeffreys, P. W.

AU - Jeremie, H.

AU - Jimack, M.

AU - Jobes, M.

AU - Jones, R. W.L.

AU - Jovanovic, P.

AU - Karlen, D.

AU - Kawagoe, K.

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AU - Zorn, G. T.

PY - 1991/12/19

Y1 - 1991/12/19

N2 - 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 ±8 6 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.

AB - 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 ±8 6 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.

UR - http://www.scopus.com/inward/record.url?scp=0347295559&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=0347295559&partnerID=8YFLogxK

U2 - 10.1016/0370-2693(91)91694-Q

DO - 10.1016/0370-2693(91)91694-Q

M3 - Article

VL - 273

SP - 338

EP - 354

JO - Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics

JF - Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics

SN - 0370-2693

IS - 3

ER -