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Measurement of the $K_{L} \to e^{+}e^{-}e^{+} e^{-}$ decay rate
The decay rate of the neutral long-lived $K$ meson into the $e^{+}e^{-}e^{+}e^{-}$ final state has been measured with the NA48 detector at the CERN SPS. Using data collected in 1999, a total of 132 events has been observed with negligible background. The total number of kaons was determined to be $5...
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Lenguaje: | eng |
Publicado: |
2005
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Materias: | |
Acceso en línea: | https://dx.doi.org/10.1016/j.physletb.2005.03.078 http://cds.cern.ch/record/828068 |
_version_ | 1780905739496194048 |
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author | Lai, A. Marras, D. Bevan, A. Dosanjh, R.S. Gershon, T.J. Hay, B. Kalmus, G.E. Lazzeroni, C. Munday, D.J. Needham, M.D. Olaiya, E. Parker, Michael Andrew White, T.O. Wotton, S.A. Barr, G. Bocquet, G. Ceccucci, A. Cuhadar, T. Cundy, D. D'Agostini, G. Debu, P. Doble, N. Falaleev, V. Gatignon, L. Gonidec, A. Gorini, B. Govi, G. Grafstrom, P. Kubischta, W. Lacourt, A. Lenti, M. Norton, A. Palestini, S. Panzer-Steindel, B. Tatishvili, G. Taureg, H. Velasco, M. Wahl, Heinrich Cheshkov, C. Gaponenko, A. Hristov, P. Kekelidze, V. Madigojine, D. Molokanova, N. Potrebenikov, Yu. Tkatchev, A. Zinchenko, A. Knowles, I. Martin, V. 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. Becker, H.G. Eppard, M. Fox, H. Holtz, K. Kalter, A. Kleinknecht, K. Koch, U. Kopke, L. Lopes da Silva, P. Marouelli, P. Pellmann, I. Peters, A. Renk, B. Schmidt, S.A. Schonharting, V. Schue, Y. Wanke, R. Winhart, A. Wittgen, M. Chollet, J.C. Fayard, L. Iconomidou-Fayard, L. Ocariz, J. Unal, G. Wingerter-Seez, I. Anzivino, G. Cenci, P. Imbergamo, E. Lubrano, P. Mestvirishvili, A. Nappi, A. Pepe, M. Piccini, M. Calafiura, P. Cerri, C. Cirilli, M. Costantini, F. Fantechi, R. Giudici, S. Mannelli, I. Pierazzini, G. Sozzi, M. Cheze, J.B. Cogan, J. De Beer, M. Formica, A. Granier de Cassagnac, R. Mazzucato, E. Peyaud, B. Turlay, R. Vallage, B. Holder, M. Maier, A. Ziolkowski, M. Arcidiacono, R. Biino, C. Cartiglia, N. Guida, R. Marchetto, F. Menichetti, Ezio A. Pastrone, N. Nassalski, J. Rondio, E. Szleper, M. Wislicki, W. Wronka, S. Dibon, H. Fischer, G. Jeitler, M. Markytan, M. Mikulec, I. Neuhofer, G. Pernicka, M. Taurok, A. Widhalm, L. |
author_facet | Lai, A. Marras, D. Bevan, A. Dosanjh, R.S. Gershon, T.J. Hay, B. Kalmus, G.E. Lazzeroni, C. Munday, D.J. Needham, M.D. Olaiya, E. Parker, Michael Andrew White, T.O. Wotton, S.A. Barr, G. Bocquet, G. Ceccucci, A. Cuhadar, T. Cundy, D. D'Agostini, G. Debu, P. Doble, N. Falaleev, V. Gatignon, L. Gonidec, A. Gorini, B. Govi, G. Grafstrom, P. Kubischta, W. Lacourt, A. Lenti, M. Norton, A. Palestini, S. Panzer-Steindel, B. Tatishvili, G. Taureg, H. Velasco, M. Wahl, Heinrich Cheshkov, C. Gaponenko, A. Hristov, P. Kekelidze, V. Madigojine, D. Molokanova, N. Potrebenikov, Yu. Tkatchev, A. Zinchenko, A. Knowles, I. Martin, V. 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. Becker, H.G. Eppard, M. Fox, H. Holtz, K. Kalter, A. Kleinknecht, K. Koch, U. Kopke, L. Lopes da Silva, P. Marouelli, P. Pellmann, I. Peters, A. Renk, B. Schmidt, S.A. Schonharting, V. Schue, Y. Wanke, R. Winhart, A. Wittgen, M. Chollet, J.C. Fayard, L. Iconomidou-Fayard, L. Ocariz, J. Unal, G. Wingerter-Seez, I. Anzivino, G. Cenci, P. Imbergamo, E. Lubrano, P. Mestvirishvili, A. Nappi, A. Pepe, M. Piccini, M. Calafiura, P. Cerri, C. Cirilli, M. Costantini, F. Fantechi, R. Giudici, S. Mannelli, I. Pierazzini, G. Sozzi, M. Cheze, J.B. Cogan, J. De Beer, M. Formica, A. Granier de Cassagnac, R. Mazzucato, E. Peyaud, B. Turlay, R. Vallage, B. Holder, M. Maier, A. Ziolkowski, M. Arcidiacono, R. Biino, C. Cartiglia, N. Guida, R. Marchetto, F. Menichetti, Ezio A. Pastrone, N. Nassalski, J. Rondio, E. Szleper, M. Wislicki, W. Wronka, S. Dibon, H. Fischer, G. Jeitler, M. Markytan, M. Mikulec, I. Neuhofer, G. Pernicka, M. Taurok, A. Widhalm, L. |
author_sort | Lai, A. |
collection | CERN |
description | The decay rate of the neutral long-lived $K$ meson into the $e^{+}e^{-}e^{+}e^{-}$ final state has been measured with the NA48 detector at the CERN SPS. Using data collected in 1999, a total of 132 events has been observed with negligible background. The total number of kaons was determined to be $5.1 \times 10^{10}$. This observation corresponds to a preliminary branching ratio of $\Gamma(K_{L} \to e^{+}e^{-}e^{+}e^{-})/\Gamma(K_{L} \to all) = (3.67 \pm 0.32_{(stat)} \pm 0.23_{(sys)} \pm 0.08_{(norm)}) \times 10^{-8}$, where the first error is statistical, the second systematic, and the third error is due to the uncertainty in the normalization. |
id | cern-828068 |
institution | Organización Europea para la Investigación Nuclear |
language | eng |
publishDate | 2005 |
record_format | invenio |
spelling | cern-8280682023-08-03T03:52:56Zdoi:10.1016/j.physletb.2005.03.078http://cds.cern.ch/record/828068engLai, A.Marras, D.Bevan, A.Dosanjh, R.S.Gershon, T.J.Hay, B.Kalmus, G.E.Lazzeroni, C.Munday, D.J.Needham, M.D.Olaiya, E.Parker, Michael AndrewWhite, T.O.Wotton, S.A.Barr, G.Bocquet, G.Ceccucci, A.Cuhadar, T.Cundy, D.D'Agostini, G.Debu, P.Doble, N.Falaleev, V.Gatignon, L.Gonidec, A.Gorini, B.Govi, G.Grafstrom, P.Kubischta, W.Lacourt, A.Lenti, M.Norton, A.Palestini, S.Panzer-Steindel, B.Tatishvili, G.Taureg, H.Velasco, M.Wahl, HeinrichCheshkov, C.Gaponenko, A.Hristov, P.Kekelidze, V.Madigojine, D.Molokanova, N.Potrebenikov, Yu.Tkatchev, A.Zinchenko, A.Knowles, I.Martin, V.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.Becker, H.G.Eppard, M.Fox, H.Holtz, K.Kalter, A.Kleinknecht, K.Koch, U.Kopke, L.Lopes da Silva, P.Marouelli, P.Pellmann, I.Peters, A.Renk, B.Schmidt, S.A.Schonharting, V.Schue, Y.Wanke, R.Winhart, A.Wittgen, M.Chollet, J.C.Fayard, L.Iconomidou-Fayard, L.Ocariz, J.Unal, G.Wingerter-Seez, I.Anzivino, G.Cenci, P.Imbergamo, E.Lubrano, P.Mestvirishvili, A.Nappi, A.Pepe, M.Piccini, M.Calafiura, P.Cerri, C.Cirilli, M.Costantini, F.Fantechi, R.Giudici, S.Mannelli, I.Pierazzini, G.Sozzi, M.Cheze, J.B.Cogan, J.De Beer, M.Formica, A.Granier de Cassagnac, R.Mazzucato, E.Peyaud, B.Turlay, R.Vallage, B.Holder, M.Maier, A.Ziolkowski, M.Arcidiacono, R.Biino, C.Cartiglia, N.Guida, R.Marchetto, F.Menichetti, Ezio A.Pastrone, N.Nassalski, J.Rondio, E.Szleper, M.Wislicki, W.Wronka, S.Dibon, H.Fischer, G.Jeitler, M.Markytan, M.Mikulec, I.Neuhofer, G.Pernicka, M.Taurok, A.Widhalm, L.Measurement of the $K_{L} \to e^{+}e^{-}e^{+} e^{-}$ decay rateParticle Physics - ExperimentThe decay rate of the neutral long-lived $K$ meson into the $e^{+}e^{-}e^{+}e^{-}$ final state has been measured with the NA48 detector at the CERN SPS. Using data collected in 1999, a total of 132 events has been observed with negligible background. The total number of kaons was determined to be $5.1 \times 10^{10}$. This observation corresponds to a preliminary branching ratio of $\Gamma(K_{L} \to e^{+}e^{-}e^{+}e^{-})/\Gamma(K_{L} \to all) = (3.67 \pm 0.32_{(stat)} \pm 0.23_{(sys)} \pm 0.08_{(norm)}) \times 10^{-8}$, where the first error is statistical, the second systematic, and the third error is due to the uncertainty in the normalization.The decay rate of the long-lived neutral $K$ meson into the $e^{+}e^{-}e^{+} e^{-}$ final state has been measured with the NA48 detector at the CERN SPS. Using data collected in 1998 and 1999, a total of 200 events has been observed with negligible background. This observation corresponds to a branching ratio of Br($K_{L} \to e^{+}e^{-}e^{+} e^{-}) = (3.30 \pm 0.24_{stat} \pm 0.23_{sys} \pm 0.10_{norm}) \times 10^{-8}$.The decay rate of the long-lived neutral K meson into the e+e−e+e− final state has been measured with the NA48 detector at the CERN SPS. Using data collected in 1998 and 1999, a total of 200 events has been observed with negligible background. This observation corresponds to a branching ratio of Br(KL→e+e−e+e−)=(3.30±0.24stat±0.23syst±0.10norm)×10−8 .The decay rate of the neutral long-lived K meson into the e+ e- e+ e- final state has been measured with the NA48 detector at the CERN SPS. Using data collected in 1999, a total of 132 events has been observed with negligible background. The total number of kaons was determined to be 5.1 x 10^10. This observation corresponds to a preliminary branching ratio of Gamma(K_L -> e+ e- e+ e-)/Gamma(K_L -> all) = (3.67 +- 0.32(stat) +- 0.23(sys) +- 0.08(norm)) x 10^-8, where the first error is statistical, the second systematic, and the third error is due to the uncertainty in the normalization.hep-ex/0006040CERN-PH-EP-2005-005oai:cds.cern.ch:8280682005-02-28 |
spellingShingle | Particle Physics - Experiment Lai, A. Marras, D. Bevan, A. Dosanjh, R.S. Gershon, T.J. Hay, B. Kalmus, G.E. Lazzeroni, C. Munday, D.J. Needham, M.D. Olaiya, E. Parker, Michael Andrew White, T.O. Wotton, S.A. Barr, G. Bocquet, G. Ceccucci, A. Cuhadar, T. Cundy, D. D'Agostini, G. Debu, P. Doble, N. Falaleev, V. Gatignon, L. Gonidec, A. Gorini, B. Govi, G. Grafstrom, P. Kubischta, W. Lacourt, A. Lenti, M. Norton, A. Palestini, S. Panzer-Steindel, B. Tatishvili, G. Taureg, H. Velasco, M. Wahl, Heinrich Cheshkov, C. Gaponenko, A. Hristov, P. Kekelidze, V. Madigojine, D. Molokanova, N. Potrebenikov, Yu. Tkatchev, A. Zinchenko, A. Knowles, I. Martin, V. 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. Becker, H.G. Eppard, M. Fox, H. Holtz, K. Kalter, A. Kleinknecht, K. Koch, U. Kopke, L. Lopes da Silva, P. Marouelli, P. Pellmann, I. Peters, A. Renk, B. Schmidt, S.A. Schonharting, V. Schue, Y. Wanke, R. Winhart, A. Wittgen, M. Chollet, J.C. Fayard, L. Iconomidou-Fayard, L. Ocariz, J. Unal, G. Wingerter-Seez, I. Anzivino, G. Cenci, P. Imbergamo, E. Lubrano, P. Mestvirishvili, A. Nappi, A. Pepe, M. Piccini, M. Calafiura, P. Cerri, C. Cirilli, M. Costantini, F. Fantechi, R. Giudici, S. Mannelli, I. Pierazzini, G. Sozzi, M. Cheze, J.B. Cogan, J. De Beer, M. Formica, A. Granier de Cassagnac, R. Mazzucato, E. Peyaud, B. Turlay, R. Vallage, B. Holder, M. Maier, A. Ziolkowski, M. Arcidiacono, R. Biino, C. Cartiglia, N. Guida, R. Marchetto, F. Menichetti, Ezio A. Pastrone, N. Nassalski, J. Rondio, E. Szleper, M. Wislicki, W. Wronka, S. Dibon, H. Fischer, G. Jeitler, M. Markytan, M. Mikulec, I. Neuhofer, G. Pernicka, M. Taurok, A. Widhalm, L. Measurement of the $K_{L} \to e^{+}e^{-}e^{+} e^{-}$ decay rate |
title | Measurement of the $K_{L} \to e^{+}e^{-}e^{+} e^{-}$ decay rate |
title_full | Measurement of the $K_{L} \to e^{+}e^{-}e^{+} e^{-}$ decay rate |
title_fullStr | Measurement of the $K_{L} \to e^{+}e^{-}e^{+} e^{-}$ decay rate |
title_full_unstemmed | Measurement of the $K_{L} \to e^{+}e^{-}e^{+} e^{-}$ decay rate |
title_short | Measurement of the $K_{L} \to e^{+}e^{-}e^{+} e^{-}$ decay rate |
title_sort | measurement of the $k_{l} \to e^{+}e^{-}e^{+} e^{-}$ decay rate |
topic | Particle Physics - Experiment |
url | https://dx.doi.org/10.1016/j.physletb.2005.03.078 http://cds.cern.ch/record/828068 |
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