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First observation of the $K_{S}\to \pi^{0}\gamma\gamma$ decay
Using the NA48 detector at the CERN SPS, 31 $K_{S}\to \pi^{0}\gamma\gamma$ candidates with an estimated background of $13.7 \pm 3.2$ events have been observed. This first observation leads to a branching ratio of $BR(K_{S}\to \pi^{0}\gamma\gamma)_{z>0.2} = (4.9 \pm 1.6_{stat} \pm 0.9_{syst}) \tim...
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Lenguaje: | eng |
Publicado: |
2003
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Materias: | |
Acceso en línea: | https://dx.doi.org/10.1016/j.physletb.2003.10.073 http://cds.cern.ch/record/642157 |
_version_ | 1780900724987658240 |
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author | Lai, A. Marras, D. Batley, J.R. Dosanjh, R.S. Gershon, T.J. Kalmus, G.E. Lazzeroni, C. Munday, D.J. Olaiya, E. Parker, Michael Andrew White, T.O. Wotton, S.A. Arcidiacono, R. Barr, G. Bocquet, G. Ceccucci, A. Cuhadar-Donszelmann, T. Cundy, D. Doble, N. Falaleev, V. Gatignon, L. Gonidec, A. Gorini, B. Grafstrom, P. Kubischta, W. Lacourt, A. Norton, A. Panzer-Steindel, B. Tatishvili, G. Wahl, Heinrich Cheshkov, C. Hristov, P. Kekelidze, V. Madigojine, D. Molokanova, N. Potrebenikov, Yu. Zinchenko, A. Martin, V. Rubin, P. Sacco, R. Walker, A. Contalbrigo, M. Dalpiaz, P. Duclos, J. Frabetti, P.L. Gianoli, A. Martini, M. Petrucci, F. Savrie, M. Bizzeti, A. Calvetti, M. Collazuol, G. Graziani, G. Iacopini, E. Lenti, M. Martelli, F. Veltri, M. Eppard, M. Hirstius, A. Holtz, K. Kleinknecht, K. Koch, U. Kopke, L. Lopes da Silva, P. Marouelli, P. Mestvirishvili, I. Pellmann, I. Peters, A. Schmidt, S.A. Schonharting, V. Schue, Y. Wanke, R. Winhart, A. Wittgen, M. Chollet, J.C. Fayard, L. Iconomidou-Fayard, L. Unal, G. Wingerter-Seez, I. Anzivino, G. Cenci, P. Imbergamo, E. Lubrano, P. Mestvirishvili, A. Nappi, A. Pepe, M. Piccini, M. Casali, R. Cerri, C. Cirilli, M. Costantini, F. Fantechi, R. Fiorini, L. Giudici, S. Mannelli, I. Pierazzini, G. Sozzi, M. Cheze, J.B. De Beer, M. Debu, P. Derue, F. Formica, A. Granier de Cassagnac, R. Gouge, G. Marel, G. Mazzucato, E. Peyaud, B. Turlay, R. Vallage, B. Holder, M. Maier, A. Ziolkowski, M. Biino, C. Cartiglia, N. Marchetto, F. Menichetti, Ezio A. Pastrone, N. Nassalski, J. Rondio, E. Szleper, M. Wislicki, W. Wronka, S. Dibon, H. Jeitler, M. Markytan, M. Mikulec, I. Neuhofer, G. Pernicka, M. Taurok, A. Widhalm, L. |
author_facet | Lai, A. Marras, D. Batley, J.R. Dosanjh, R.S. Gershon, T.J. Kalmus, G.E. Lazzeroni, C. Munday, D.J. Olaiya, E. Parker, Michael Andrew White, T.O. Wotton, S.A. Arcidiacono, R. Barr, G. Bocquet, G. Ceccucci, A. Cuhadar-Donszelmann, T. Cundy, D. Doble, N. Falaleev, V. Gatignon, L. Gonidec, A. Gorini, B. Grafstrom, P. Kubischta, W. Lacourt, A. Norton, A. Panzer-Steindel, B. Tatishvili, G. Wahl, Heinrich Cheshkov, C. Hristov, P. Kekelidze, V. Madigojine, D. Molokanova, N. Potrebenikov, Yu. Zinchenko, A. Martin, V. Rubin, P. Sacco, R. Walker, A. Contalbrigo, M. Dalpiaz, P. Duclos, J. Frabetti, P.L. Gianoli, A. Martini, M. Petrucci, F. Savrie, M. Bizzeti, A. Calvetti, M. Collazuol, G. Graziani, G. Iacopini, E. Lenti, M. Martelli, F. Veltri, M. Eppard, M. Hirstius, A. Holtz, K. Kleinknecht, K. Koch, U. Kopke, L. Lopes da Silva, P. Marouelli, P. Mestvirishvili, I. Pellmann, I. Peters, A. Schmidt, S.A. Schonharting, V. Schue, Y. Wanke, R. Winhart, A. Wittgen, M. Chollet, J.C. Fayard, L. Iconomidou-Fayard, L. Unal, G. Wingerter-Seez, I. Anzivino, G. Cenci, P. Imbergamo, E. Lubrano, P. Mestvirishvili, A. Nappi, A. Pepe, M. Piccini, M. Casali, R. Cerri, C. Cirilli, M. Costantini, F. Fantechi, R. Fiorini, L. Giudici, S. Mannelli, I. Pierazzini, G. Sozzi, M. Cheze, J.B. De Beer, M. Debu, P. Derue, F. Formica, A. Granier de Cassagnac, R. Gouge, G. Marel, G. Mazzucato, E. Peyaud, B. Turlay, R. Vallage, B. Holder, M. Maier, A. Ziolkowski, M. Biino, C. Cartiglia, N. Marchetto, F. Menichetti, Ezio A. Pastrone, N. Nassalski, J. Rondio, E. Szleper, M. Wislicki, W. Wronka, S. Dibon, H. Jeitler, M. Markytan, M. Mikulec, I. Neuhofer, G. Pernicka, M. Taurok, A. Widhalm, L. |
author_sort | Lai, A. |
collection | CERN |
description | Using the NA48 detector at the CERN SPS, 31 $K_{S}\to \pi^{0}\gamma\gamma$ candidates with an estimated background of $13.7 \pm 3.2$ events have been observed. This first observation leads to a branching ratio of $BR(K_{S}\to \pi^{0}\gamma\gamma)_{z>0.2} = (4.9 \pm 1.6_{stat} \pm 0.9_{syst}) \times 10^{-8}$ in agreement with Chiral Perturbation theory predictions. |
id | cern-642157 |
institution | Organización Europea para la Investigación Nuclear |
language | eng |
publishDate | 2003 |
record_format | invenio |
spelling | cern-6421572023-08-03T03:41:05Zdoi:10.1016/j.physletb.2003.10.073http://cds.cern.ch/record/642157engLai, A.Marras, D.Batley, J.R.Dosanjh, R.S.Gershon, T.J.Kalmus, G.E.Lazzeroni, C.Munday, D.J.Olaiya, E.Parker, Michael AndrewWhite, T.O.Wotton, S.A.Arcidiacono, R.Barr, G.Bocquet, G.Ceccucci, A.Cuhadar-Donszelmann, T.Cundy, D.Doble, N.Falaleev, V.Gatignon, L.Gonidec, A.Gorini, B.Grafstrom, P.Kubischta, W.Lacourt, A.Norton, A.Panzer-Steindel, B.Tatishvili, G.Wahl, HeinrichCheshkov, C.Hristov, P.Kekelidze, V.Madigojine, D.Molokanova, N.Potrebenikov, Yu.Zinchenko, A.Martin, V.Rubin, P.Sacco, R.Walker, A.Contalbrigo, M.Dalpiaz, P.Duclos, J.Frabetti, P.L.Gianoli, A.Martini, M.Petrucci, F.Savrie, M.Bizzeti, A.Calvetti, M.Collazuol, G.Graziani, G.Iacopini, E.Lenti, M.Martelli, F.Veltri, M.Eppard, M.Hirstius, A.Holtz, K.Kleinknecht, K.Koch, U.Kopke, L.Lopes da Silva, P.Marouelli, P.Mestvirishvili, I.Pellmann, I.Peters, A.Schmidt, S.A.Schonharting, V.Schue, Y.Wanke, R.Winhart, A.Wittgen, M.Chollet, J.C.Fayard, L.Iconomidou-Fayard, L.Unal, G.Wingerter-Seez, I.Anzivino, G.Cenci, P.Imbergamo, E.Lubrano, P.Mestvirishvili, A.Nappi, A.Pepe, M.Piccini, M.Casali, R.Cerri, C.Cirilli, M.Costantini, F.Fantechi, R.Fiorini, L.Giudici, S.Mannelli, I.Pierazzini, G.Sozzi, M.Cheze, J.B.De Beer, M.Debu, P.Derue, F.Formica, A.Granier de Cassagnac, R.Gouge, G.Marel, G.Mazzucato, E.Peyaud, B.Turlay, R.Vallage, B.Holder, M.Maier, A.Ziolkowski, M.Biino, C.Cartiglia, N.Marchetto, F.Menichetti, Ezio A.Pastrone, N.Nassalski, J.Rondio, E.Szleper, M.Wislicki, W.Wronka, S.Dibon, H.Jeitler, M.Markytan, M.Mikulec, I.Neuhofer, G.Pernicka, M.Taurok, A.Widhalm, L.First observation of the $K_{S}\to \pi^{0}\gamma\gamma$ decayParticle Physics - ExperimentUsing the NA48 detector at the CERN SPS, 31 $K_{S}\to \pi^{0}\gamma\gamma$ candidates with an estimated background of $13.7 \pm 3.2$ events have been observed. This first observation leads to a branching ratio of $BR(K_{S}\to \pi^{0}\gamma\gamma)_{z>0.2} = (4.9 \pm 1.6_{stat} \pm 0.9_{syst}) \times 10^{-8}$ in agreement with Chiral Perturbation theory predictions.Using the NA48 detector at the CERN SPS, 31 K S → π 0 γγ candidates with an estimated background of 13.7±3.2 events have been observed. This first observation leads to a branching ratio of BR( K S → π 0 γγ ) z >0.2 =(4.9±1.6 stat ±0.9 syst )×10 −8 in agreement with Chiral Perturbation Theory predictions.Using the NA48 detector at the CERN SPS, 31 KS->pi0 gamma gamma candidates with an estimated background of 13.7 +- 3.2 events have been observed. This first observation leads to a branching ratio of BR(KS->pi0 gamma gamma) = (4.9 +- 1.6(stat) +- 0.9(syst)) x 10^-8 in agreement with Chiral Perturbation theory predictions.hep-ex/0309022CERN-EP-2003-052CERN-EP-2003-052oai:cds.cern.ch:6421572003-08-28 |
spellingShingle | Particle Physics - Experiment Lai, A. Marras, D. Batley, J.R. Dosanjh, R.S. Gershon, T.J. Kalmus, G.E. Lazzeroni, C. Munday, D.J. Olaiya, E. Parker, Michael Andrew White, T.O. Wotton, S.A. Arcidiacono, R. Barr, G. Bocquet, G. Ceccucci, A. Cuhadar-Donszelmann, T. Cundy, D. Doble, N. Falaleev, V. Gatignon, L. Gonidec, A. Gorini, B. Grafstrom, P. Kubischta, W. Lacourt, A. Norton, A. Panzer-Steindel, B. Tatishvili, G. Wahl, Heinrich Cheshkov, C. Hristov, P. Kekelidze, V. Madigojine, D. Molokanova, N. Potrebenikov, Yu. Zinchenko, A. Martin, V. Rubin, P. Sacco, R. Walker, A. Contalbrigo, M. Dalpiaz, P. Duclos, J. Frabetti, P.L. Gianoli, A. Martini, M. Petrucci, F. Savrie, M. Bizzeti, A. Calvetti, M. Collazuol, G. Graziani, G. Iacopini, E. Lenti, M. Martelli, F. Veltri, M. Eppard, M. Hirstius, A. Holtz, K. Kleinknecht, K. Koch, U. Kopke, L. Lopes da Silva, P. Marouelli, P. Mestvirishvili, I. Pellmann, I. Peters, A. Schmidt, S.A. Schonharting, V. Schue, Y. Wanke, R. Winhart, A. Wittgen, M. Chollet, J.C. Fayard, L. Iconomidou-Fayard, L. Unal, G. Wingerter-Seez, I. Anzivino, G. Cenci, P. Imbergamo, E. Lubrano, P. Mestvirishvili, A. Nappi, A. Pepe, M. Piccini, M. Casali, R. Cerri, C. Cirilli, M. Costantini, F. Fantechi, R. Fiorini, L. Giudici, S. Mannelli, I. Pierazzini, G. Sozzi, M. Cheze, J.B. De Beer, M. Debu, P. Derue, F. Formica, A. Granier de Cassagnac, R. Gouge, G. Marel, G. Mazzucato, E. Peyaud, B. Turlay, R. Vallage, B. Holder, M. Maier, A. Ziolkowski, M. Biino, C. Cartiglia, N. Marchetto, F. Menichetti, Ezio A. Pastrone, N. Nassalski, J. Rondio, E. Szleper, M. Wislicki, W. Wronka, S. Dibon, H. Jeitler, M. Markytan, M. Mikulec, I. Neuhofer, G. Pernicka, M. Taurok, A. Widhalm, L. First observation of the $K_{S}\to \pi^{0}\gamma\gamma$ decay |
title | First observation of the $K_{S}\to \pi^{0}\gamma\gamma$ decay |
title_full | First observation of the $K_{S}\to \pi^{0}\gamma\gamma$ decay |
title_fullStr | First observation of the $K_{S}\to \pi^{0}\gamma\gamma$ decay |
title_full_unstemmed | First observation of the $K_{S}\to \pi^{0}\gamma\gamma$ decay |
title_short | First observation of the $K_{S}\to \pi^{0}\gamma\gamma$ decay |
title_sort | first observation of the $k_{s}\to \pi^{0}\gamma\gamma$ decay |
topic | Particle Physics - Experiment |
url | https://dx.doi.org/10.1016/j.physletb.2003.10.073 http://cds.cern.ch/record/642157 |
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