First observation and study of the $K^{\pm} \to \pi^{\pm} \pi^{0} e^{+} e^{-}$ decay

The NA48/2 experiment at CERN reports the first observation of the K±→π±π0e+e− decay from an exposure of 1.7×1011 charged kaon decays recorded in 2003–2004. A sample of 4919 candidates with 4.9% background contamination allows the determination of the branching ratio in the full kinematic region, BR...

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Detalles Bibliográficos
Autores principales: Batley, J.R., Kalmus, G., Lazzeroni, C., Munday, D.J., Slater, M.W., Wotton, S.A., Arcidiacono, R., Bocquet, G., Cabibbo, N., Ceccucci, A., Cundy, D., Falaleev, V., Fidecaro, M., Gatignon, L., Gonidec, A., Kubischta, W., Maier, A., Norton, A., Patel, M., Peters, A., Balev, S., Frabetti, P.L., Gersabeck, E., Goudzovski, E., Hristov, P., Kekelidze, V., Kozhuharov, V., Litov, L., Madigozhin, D., Misheva, M., Molokanova, N., Polenkevich, I., Potrebenikov, Yu., Stoynev, S., Zinchenko, A., Monnier, E., Swallow, E., Winston, R., Rubin, P., Walker, A., Dalpiaz, P., Damiani, C., Fiorini, M., Martini, M., Petrucci, F., Savrié, M., Scarpa, M., Wahl, H., Baldini, W., Cotta Ramusino, A., Gianoli, A., Calvetti, M., Celeghini, E., Iacopini, E., Lenti, M., Ruggiero, G., Bizzeti, A., Veltri, M., Behler, M., Eppard, K., Hita-Hochgesand, M., Kleinknecht, K., Marouelli, P., Masetti, L., Moosbrugger, U., Morales Morales, C., Renk, B., Wache, M., Wanke, R., Winhart, A., Coward, D., Dabrowski, A., Fonseca Martin, T., Shieh, M., Szleper, M., Velasco, M., Wood, M.D., Anzivino, G., Imbergamo, E., Nappi, A., Piccini, M., Raggi, M., Valdata-Nappi, M., Cenci, P., Pepe, M., Petrucci, M.C., Costantini, F., Doble, N., Fiorini, L., Giudici, S., Pierazzini, G., Sozzi, M., Venditti, S., Collazuol, G., DiLella, L., Lamanna, G., Mannelli, I., Michetti, A., Cerri, C., Fantechi, R., Bloch-Devaux, B., Cheshkov, C., Chèze, J.B., De Beer, M., Derré, J., Marel, G., Mazzucato, E., Peyaud, B., Vallage, B., Holder, M., Ziolkowski, M., Bifani, S., Clemencic, M., Goy Lopez, S., Biino, C., Cartiglia, N., Marchetto, F., Dibon, H., Jeitler, M., Markytan, M., Mikulec, I., Neuhofer, G., Widhalm, L.
Lenguaje:eng
Publicado: 2018
Materias:
Particle Physics - Experiment
hep-ex
Acceso en línea:https://dx.doi.org/10.1016/j.physletb.2018.11.046
http://cds.cern.ch/record/2626179
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author Batley, J.R.
Kalmus, G.
Lazzeroni, C.
Munday, D.J.
Slater, M.W.
Wotton, S.A.
Arcidiacono, R.
Bocquet, G.
Cabibbo, N.
Ceccucci, A.
Cundy, D.
Falaleev, V.
Fidecaro, M.
Gatignon, L.
Gonidec, A.
Kubischta, W.
Maier, A.
Norton, A.
Patel, M.
Peters, A.
Balev, S.
Frabetti, P.L.
Gersabeck, E.
Goudzovski, E.
Hristov, P.
Kekelidze, V.
Kozhuharov, V.
Litov, L.
Madigozhin, D.
Misheva, M.
Molokanova, N.
Polenkevich, I.
Potrebenikov, Yu.
Stoynev, S.
Zinchenko, A.
Monnier, E.
Swallow, E.
Winston, R.
Rubin, P.
Walker, A.
Dalpiaz, P.
Damiani, C.
Fiorini, M.
Martini, M.
Petrucci, F.
Savrié, M.
Scarpa, M.
Wahl, H.
Baldini, W.
Cotta Ramusino, A.
Gianoli, A.
Calvetti, M.
Celeghini, E.
Iacopini, E.
Lenti, M.
Ruggiero, G.
Bizzeti, A.
Veltri, M.
Behler, M.
Eppard, K.
Hita-Hochgesand, M.
Kleinknecht, K.
Marouelli, P.
Masetti, L.
Moosbrugger, U.
Morales Morales, C.
Renk, B.
Wache, M.
Wanke, R.
Winhart, A.
Coward, D.
Dabrowski, A.
Fonseca Martin, T.
Shieh, M.
Szleper, M.
Velasco, M.
Wood, M.D.
Anzivino, G.
Imbergamo, E.
Nappi, A.
Piccini, M.
Raggi, M.
Valdata-Nappi, M.
Cenci, P.
Pepe, M.
Petrucci, M.C.
Costantini, F.
Doble, N.
Fiorini, L.
Giudici, S.
Pierazzini, G.
Sozzi, M.
Venditti, S.
Collazuol, G.
DiLella, L.
Lamanna, G.
Mannelli, I.
Michetti, A.
Cerri, C.
Fantechi, R.
Bloch-Devaux, B.
Cheshkov, C.
Chèze, J.B.
De Beer, M.
Derré, J.
Marel, G.
Mazzucato, E.
Peyaud, B.
Vallage, B.
Holder, M.
Ziolkowski, M.
Bifani, S.
Clemencic, M.
Goy Lopez, S.
Biino, C.
Cartiglia, N.
Marchetto, F.
Dibon, H.
Jeitler, M.
Markytan, M.
Mikulec, I.
Neuhofer, G.
Widhalm, L.
author_facet Batley, J.R.
Kalmus, G.
Lazzeroni, C.
Munday, D.J.
Slater, M.W.
Wotton, S.A.
Arcidiacono, R.
Bocquet, G.
Cabibbo, N.
Ceccucci, A.
Cundy, D.
Falaleev, V.
Fidecaro, M.
Gatignon, L.
Gonidec, A.
Kubischta, W.
Maier, A.
Norton, A.
Patel, M.
Peters, A.
Balev, S.
Frabetti, P.L.
Gersabeck, E.
Goudzovski, E.
Hristov, P.
Kekelidze, V.
Kozhuharov, V.
Litov, L.
Madigozhin, D.
Misheva, M.
Molokanova, N.
Polenkevich, I.
Potrebenikov, Yu.
Stoynev, S.
Zinchenko, A.
Monnier, E.
Swallow, E.
Winston, R.
Rubin, P.
Walker, A.
Dalpiaz, P.
Damiani, C.
Fiorini, M.
Martini, M.
Petrucci, F.
Savrié, M.
Scarpa, M.
Wahl, H.
Baldini, W.
Cotta Ramusino, A.
Gianoli, A.
Calvetti, M.
Celeghini, E.
Iacopini, E.
Lenti, M.
Ruggiero, G.
Bizzeti, A.
Veltri, M.
Behler, M.
Eppard, K.
Hita-Hochgesand, M.
Kleinknecht, K.
Marouelli, P.
Masetti, L.
Moosbrugger, U.
Morales Morales, C.
Renk, B.
Wache, M.
Wanke, R.
Winhart, A.
Coward, D.
Dabrowski, A.
Fonseca Martin, T.
Shieh, M.
Szleper, M.
Velasco, M.
Wood, M.D.
Anzivino, G.
Imbergamo, E.
Nappi, A.
Piccini, M.
Raggi, M.
Valdata-Nappi, M.
Cenci, P.
Pepe, M.
Petrucci, M.C.
Costantini, F.
Doble, N.
Fiorini, L.
Giudici, S.
Pierazzini, G.
Sozzi, M.
Venditti, S.
Collazuol, G.
DiLella, L.
Lamanna, G.
Mannelli, I.
Michetti, A.
Cerri, C.
Fantechi, R.
Bloch-Devaux, B.
Cheshkov, C.
Chèze, J.B.
De Beer, M.
Derré, J.
Marel, G.
Mazzucato, E.
Peyaud, B.
Vallage, B.
Holder, M.
Ziolkowski, M.
Bifani, S.
Clemencic, M.
Goy Lopez, S.
Biino, C.
Cartiglia, N.
Marchetto, F.
Dibon, H.
Jeitler, M.
Markytan, M.
Mikulec, I.
Neuhofer, G.
Widhalm, L.
author_sort Batley, J.R.
collection CERN
description The NA48/2 experiment at CERN reports the first observation of the K±→π±π0e+e− decay from an exposure of 1.7×1011 charged kaon decays recorded in 2003–2004. A sample of 4919 candidates with 4.9% background contamination allows the determination of the branching ratio in the full kinematic region, BR(K±→π±π0e+e−)=(4.24±0.14)×10−6 . The study of the kinematic space shows evidence for a structure dependent contribution in agreement with predictions based on chiral perturbation theory. Several P- and CP-violating asymmetries are also evaluated.
id cern-2626179
institution Organización Europea para la Investigación Nuclear
language eng
publishDate 2018
record_format invenio
spelling cern-26261792023-08-03T04:05:17Zdoi:10.1016/j.physletb.2018.11.046http://cds.cern.ch/record/2626179engBatley, J.R.Kalmus, G.Lazzeroni, C.Munday, D.J.Slater, M.W.Wotton, S.A.Arcidiacono, R.Bocquet, G.Cabibbo, N.Ceccucci, A.Cundy, D.Falaleev, V.Fidecaro, M.Gatignon, L.Gonidec, A.Kubischta, W.Maier, A.Norton, A.Patel, M.Peters, A.Balev, S.Frabetti, P.L.Gersabeck, E.Goudzovski, E.Hristov, P.Kekelidze, V.Kozhuharov, V.Litov, L.Madigozhin, D.Misheva, M.Molokanova, N.Polenkevich, I.Potrebenikov, Yu.Stoynev, S.Zinchenko, A.Monnier, E.Swallow, E.Winston, R.Rubin, P.Walker, A.Dalpiaz, P.Damiani, C.Fiorini, M.Martini, M.Petrucci, F.Savrié, M.Scarpa, M.Wahl, H.Baldini, W.Cotta Ramusino, A.Gianoli, A.Calvetti, M.Celeghini, E.Iacopini, E.Lenti, M.Ruggiero, G.Bizzeti, A.Veltri, M.Behler, M.Eppard, K.Hita-Hochgesand, M.Kleinknecht, K.Marouelli, P.Masetti, L.Moosbrugger, U.Morales Morales, C.Renk, B.Wache, M.Wanke, R.Winhart, A.Coward, D.Dabrowski, A.Fonseca Martin, T.Shieh, M.Szleper, M.Velasco, M.Wood, M.D.Anzivino, G.Imbergamo, E.Nappi, A.Piccini, M.Raggi, M.Valdata-Nappi, M.Cenci, P.Pepe, M.Petrucci, M.C.Costantini, F.Doble, N.Fiorini, L.Giudici, S.Pierazzini, G.Sozzi, M.Venditti, S.Collazuol, G.DiLella, L.Lamanna, G.Mannelli, I.Michetti, A.Cerri, C.Fantechi, R.Bloch-Devaux, B.Cheshkov, C.Chèze, J.B.De Beer, M.Derré, J.Marel, G.Mazzucato, E.Peyaud, B.Vallage, B.Holder, M.Ziolkowski, M.Bifani, S.Clemencic, M.Goy Lopez, S.Biino, C.Cartiglia, N.Marchetto, F.Dibon, H.Jeitler, M.Markytan, M.Mikulec, I.Neuhofer, G.Widhalm, L.First observation and study of the $K^{\pm} \to \pi^{\pm} \pi^{0} e^{+} e^{-}$ decayParticle Physics - Experimenthep-exThe NA48/2 experiment at CERN reports the first observation of the K±→π±π0e+e− decay from an exposure of 1.7×1011 charged kaon decays recorded in 2003–2004. A sample of 4919 candidates with 4.9% background contamination allows the determination of the branching ratio in the full kinematic region, BR(K±→π±π0e+e−)=(4.24±0.14)×10−6 . The study of the kinematic space shows evidence for a structure dependent contribution in agreement with predictions based on chiral perturbation theory. Several P- and CP-violating asymmetries are also evaluated.The NA48/2 experiment at CERN reports the first observation of the $K^\pm \to \pi^\pm \pi^0 e^+ e^-$ decay from an exposure of $1.7 \times 10^{11}$ charged kaon decays recorded in $2003-2004$. A sample of 4919 candidates with 4.9% background contamination allows the determination of the branching ratio in the full kinematic region, BR($K^\pm \to \pi^\pm \pi^0 e^+ e^-)=(4.24 \pm 0.14)\times10^{-6}$. The study of the kinematic space shows evidence for a structure dependent contribution in agreement with predictions based on chiral perturbation theory. Several P- and CP-violating asymmetries are also evaluated.arXiv:1809.02873CERN-EP-2018-246oai:cds.cern.ch:26261792018-09-05
spellingShingle Particle Physics - Experiment
hep-ex
Batley, J.R.
Kalmus, G.
Lazzeroni, C.
Munday, D.J.
Slater, M.W.
Wotton, S.A.
Arcidiacono, R.
Bocquet, G.
Cabibbo, N.
Ceccucci, A.
Cundy, D.
Falaleev, V.
Fidecaro, M.
Gatignon, L.
Gonidec, A.
Kubischta, W.
Maier, A.
Norton, A.
Patel, M.
Peters, A.
Balev, S.
Frabetti, P.L.
Gersabeck, E.
Goudzovski, E.
Hristov, P.
Kekelidze, V.
Kozhuharov, V.
Litov, L.
Madigozhin, D.
Misheva, M.
Molokanova, N.
Polenkevich, I.
Potrebenikov, Yu.
Stoynev, S.
Zinchenko, A.
Monnier, E.
Swallow, E.
Winston, R.
Rubin, P.
Walker, A.
Dalpiaz, P.
Damiani, C.
Fiorini, M.
Martini, M.
Petrucci, F.
Savrié, M.
Scarpa, M.
Wahl, H.
Baldini, W.
Cotta Ramusino, A.
Gianoli, A.
Calvetti, M.
Celeghini, E.
Iacopini, E.
Lenti, M.
Ruggiero, G.
Bizzeti, A.
Veltri, M.
Behler, M.
Eppard, K.
Hita-Hochgesand, M.
Kleinknecht, K.
Marouelli, P.
Masetti, L.
Moosbrugger, U.
Morales Morales, C.
Renk, B.
Wache, M.
Wanke, R.
Winhart, A.
Coward, D.
Dabrowski, A.
Fonseca Martin, T.
Shieh, M.
Szleper, M.
Velasco, M.
Wood, M.D.
Anzivino, G.
Imbergamo, E.
Nappi, A.
Piccini, M.
Raggi, M.
Valdata-Nappi, M.
Cenci, P.
Pepe, M.
Petrucci, M.C.
Costantini, F.
Doble, N.
Fiorini, L.
Giudici, S.
Pierazzini, G.
Sozzi, M.
Venditti, S.
Collazuol, G.
DiLella, L.
Lamanna, G.
Mannelli, I.
Michetti, A.
Cerri, C.
Fantechi, R.
Bloch-Devaux, B.
Cheshkov, C.
Chèze, J.B.
De Beer, M.
Derré, J.
Marel, G.
Mazzucato, E.
Peyaud, B.
Vallage, B.
Holder, M.
Ziolkowski, M.
Bifani, S.
Clemencic, M.
Goy Lopez, S.
Biino, C.
Cartiglia, N.
Marchetto, F.
Dibon, H.
Jeitler, M.
Markytan, M.
Mikulec, I.
Neuhofer, G.
Widhalm, L.
First observation and study of the $K^{\pm} \to \pi^{\pm} \pi^{0} e^{+} e^{-}$ decay
title First observation and study of the $K^{\pm} \to \pi^{\pm} \pi^{0} e^{+} e^{-}$ decay
title_full First observation and study of the $K^{\pm} \to \pi^{\pm} \pi^{0} e^{+} e^{-}$ decay
title_fullStr First observation and study of the $K^{\pm} \to \pi^{\pm} \pi^{0} e^{+} e^{-}$ decay
title_full_unstemmed First observation and study of the $K^{\pm} \to \pi^{\pm} \pi^{0} e^{+} e^{-}$ decay
title_short First observation and study of the $K^{\pm} \to \pi^{\pm} \pi^{0} e^{+} e^{-}$ decay
title_sort first observation and study of the $k^{\pm} \to \pi^{\pm} \pi^{0} e^{+} e^{-}$ decay
topic Particle Physics - Experiment
hep-ex
url https://dx.doi.org/10.1016/j.physletb.2018.11.046
http://cds.cern.ch/record/2626179
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AT debeerm firstobservationandstudyofthekpmtopipmpi0eedecay
AT derrej firstobservationandstudyofthekpmtopipmpi0eedecay
AT marelg firstobservationandstudyofthekpmtopipmpi0eedecay
AT mazzucatoe firstobservationandstudyofthekpmtopipmpi0eedecay
AT peyaudb firstobservationandstudyofthekpmtopipmpi0eedecay
AT vallageb firstobservationandstudyofthekpmtopipmpi0eedecay
AT holderm firstobservationandstudyofthekpmtopipmpi0eedecay
AT ziolkowskim firstobservationandstudyofthekpmtopipmpi0eedecay
AT bifanis firstobservationandstudyofthekpmtopipmpi0eedecay
AT clemencicm firstobservationandstudyofthekpmtopipmpi0eedecay
AT goylopezs firstobservationandstudyofthekpmtopipmpi0eedecay
AT biinoc firstobservationandstudyofthekpmtopipmpi0eedecay
AT cartiglian firstobservationandstudyofthekpmtopipmpi0eedecay
AT marchettof firstobservationandstudyofthekpmtopipmpi0eedecay
AT dibonh firstobservationandstudyofthekpmtopipmpi0eedecay
AT jeitlerm firstobservationandstudyofthekpmtopipmpi0eedecay
AT markytanm firstobservationandstudyofthekpmtopipmpi0eedecay
AT mikuleci firstobservationandstudyofthekpmtopipmpi0eedecay
AT neuhoferg firstobservationandstudyofthekpmtopipmpi0eedecay
AT widhalml firstobservationandstudyofthekpmtopipmpi0eedecay

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