Precision Measurement of the Ratio of the Charged Kaon Leptonic Decay Rates

A precision measurement of the ratio $R_K$ of the rates of kaon leptonic decays $K^\pm \to e^\pm\nu$ and $K^\pm \to \mu^\pm \nu$ with the full data sample collected by the NA62 experiment at CERN in $2007-2008$ is reported. The result, obtained by analysing $\sim\!150000$ reconstructed $K^\pm \to e^...

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Autores principales: Lazzeroni, C., Romano, A., Ceccucci, A., Danielsson, H., Falaleev, V., Gatignon, L., Goy Lopez, S., Hallgren, B., Maier, A., Peters, A., Piccini, M., Riedler, P., Frabetti, P.L., Gersabeck, E., Kekelidze, V., Madigozhin, D., Misheva, M., Molokanova, N., Movchan, S., Potrebenikov, Yu., Shkarovskiy, S., Zinchenko, A., Rubin, P., Baldini, W., Cotta Ramusino, A., Dalpiaz, P., Fiorini, M., Gianoli, A., Norton, A., Petrucci, F., Savrie, M., Bizzeti, A., Bucci, F., Iacopini, E., Lenti, M., Veltri, M., Antonelli, A., Moulson, M., Raggi, M., Spadaro, T., Eppard, K., Hita-Hochgesand, M., Kleinknecht, K., Renk, B., Wanke, R., Winhart, A., Winston, R., Bolotov, V., Duk, V., Gushchin, E., Ambrosino, F., Di Filippo, D., Massarotti, P., Napolitano, M., Palladino, V., Saracino, G., Anzivino, G., Imbergamo, E., Piandani, R., Sergi, A., Cenci, P., Pepe, M., Costantini, F., Doble, N., Giudici, S., Pierazzini, G., Sozzi, M., Venditti, S., Balev, S., Collazuol, G., DiLella, L., Gallorini, S., Goudzovski, E., Lamanna, G., Mannelli, I., Ruggiero, G., Cerri, C., Fantechi, R., Kurshetsov, V., Obraztsov, V., Popov, I., Semenov, V., Yushchenko, O., D'Agostini, G., Leonardi, E., Serra, M., Valente, P., Fucci, A., Salamon, A., Bloch-Devaux, B., Peyaud, B., Engelfried, J., Coward, D., Kozhuharov, V., Litov, L., Arcidiacono, R., Bifani, S., Biino, C., Dellacasa, G., Marchetto, F., Numao, T., Retiere, F.
Lenguaje:eng
Publicado: 2013
Materias:
Particle Physics - Experiment
Acceso en línea:https://dx.doi.org/10.1016/j.physletb.2013.01.037
http://cds.cern.ch/record/1434415
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author Lazzeroni, C.
Romano, A.
Ceccucci, A.
Danielsson, H.
Falaleev, V.
Gatignon, L.
Goy Lopez, S.
Hallgren, B.
Maier, A.
Peters, A.
Piccini, M.
Riedler, P.
Frabetti, P.L.
Gersabeck, E.
Kekelidze, V.
Madigozhin, D.
Misheva, M.
Molokanova, N.
Movchan, S.
Potrebenikov, Yu.
Shkarovskiy, S.
Zinchenko, A.
Rubin, P.
Baldini, W.
Cotta Ramusino, A.
Dalpiaz, P.
Fiorini, M.
Gianoli, A.
Norton, A.
Petrucci, F.
Savrie, M.
Bizzeti, A.
Bucci, F.
Iacopini, E.
Lenti, M.
Veltri, M.
Antonelli, A.
Moulson, M.
Raggi, M.
Spadaro, T.
Eppard, K.
Hita-Hochgesand, M.
Kleinknecht, K.
Renk, B.
Wanke, R.
Winhart, A.
Winston, R.
Bolotov, V.
Duk, V.
Gushchin, E.
Ambrosino, F.
Di Filippo, D.
Massarotti, P.
Napolitano, M.
Palladino, V.
Saracino, G.
Anzivino, G.
Imbergamo, E.
Piandani, R.
Sergi, A.
Cenci, P.
Pepe, M.
Costantini, F.
Doble, N.
Giudici, S.
Pierazzini, G.
Sozzi, M.
Venditti, S.
Balev, S.
Collazuol, G.
DiLella, L.
Gallorini, S.
Goudzovski, E.
Lamanna, G.
Mannelli, I.
Ruggiero, G.
Cerri, C.
Fantechi, R.
Kurshetsov, V.
Obraztsov, V.
Popov, I.
Semenov, V.
Yushchenko, O.
D'Agostini, G.
Leonardi, E.
Serra, M.
Valente, P.
Fucci, A.
Salamon, A.
Bloch-Devaux, B.
Peyaud, B.
Engelfried, J.
Coward, D.
Kozhuharov, V.
Litov, L.
Arcidiacono, R.
Bifani, S.
Biino, C.
Dellacasa, G.
Marchetto, F.
Numao, T.
Retiere, F.
author_facet Lazzeroni, C.
Romano, A.
Ceccucci, A.
Danielsson, H.
Falaleev, V.
Gatignon, L.
Goy Lopez, S.
Hallgren, B.
Maier, A.
Peters, A.
Piccini, M.
Riedler, P.
Frabetti, P.L.
Gersabeck, E.
Kekelidze, V.
Madigozhin, D.
Misheva, M.
Molokanova, N.
Movchan, S.
Potrebenikov, Yu.
Shkarovskiy, S.
Zinchenko, A.
Rubin, P.
Baldini, W.
Cotta Ramusino, A.
Dalpiaz, P.
Fiorini, M.
Gianoli, A.
Norton, A.
Petrucci, F.
Savrie, M.
Bizzeti, A.
Bucci, F.
Iacopini, E.
Lenti, M.
Veltri, M.
Antonelli, A.
Moulson, M.
Raggi, M.
Spadaro, T.
Eppard, K.
Hita-Hochgesand, M.
Kleinknecht, K.
Renk, B.
Wanke, R.
Winhart, A.
Winston, R.
Bolotov, V.
Duk, V.
Gushchin, E.
Ambrosino, F.
Di Filippo, D.
Massarotti, P.
Napolitano, M.
Palladino, V.
Saracino, G.
Anzivino, G.
Imbergamo, E.
Piandani, R.
Sergi, A.
Cenci, P.
Pepe, M.
Costantini, F.
Doble, N.
Giudici, S.
Pierazzini, G.
Sozzi, M.
Venditti, S.
Balev, S.
Collazuol, G.
DiLella, L.
Gallorini, S.
Goudzovski, E.
Lamanna, G.
Mannelli, I.
Ruggiero, G.
Cerri, C.
Fantechi, R.
Kurshetsov, V.
Obraztsov, V.
Popov, I.
Semenov, V.
Yushchenko, O.
D'Agostini, G.
Leonardi, E.
Serra, M.
Valente, P.
Fucci, A.
Salamon, A.
Bloch-Devaux, B.
Peyaud, B.
Engelfried, J.
Coward, D.
Kozhuharov, V.
Litov, L.
Arcidiacono, R.
Bifani, S.
Biino, C.
Dellacasa, G.
Marchetto, F.
Numao, T.
Retiere, F.
author_sort Lazzeroni, C.
collection CERN
description A precision measurement of the ratio $R_K$ of the rates of kaon leptonic decays $K^\pm \to e^\pm\nu$ and $K^\pm \to \mu^\pm \nu$ with the full data sample collected by the NA62 experiment at CERN in $2007-2008$ is reported. The result, obtained by analysing $\sim\!150000$ reconstructed $K^\pm \to e^\pm \nu$ candidates with $11\%$ background contamination, is $R_K = (2.488\pm0.010)\times10^{-5}$, in agreement with the Standard Model expectation.
id cern-1501394
institution Organización Europea para la Investigación Nuclear
language eng
publishDate 2013
record_format invenio
spelling cern-15013942023-08-03T04:05:39Zdoi:10.1016/j.physletb.2013.01.037http://cds.cern.ch/record/1434415engLazzeroni, C.Romano, A.Ceccucci, A.Danielsson, H.Falaleev, V.Gatignon, L.Goy Lopez, S.Hallgren, B.Maier, A.Peters, A.Piccini, M.Riedler, P.Frabetti, P.L.Gersabeck, E.Kekelidze, V.Madigozhin, D.Misheva, M.Molokanova, N.Movchan, S.Potrebenikov, Yu.Shkarovskiy, S.Zinchenko, A.Rubin, P.Baldini, W.Cotta Ramusino, A.Dalpiaz, P.Fiorini, M.Gianoli, A.Norton, A.Petrucci, F.Savrie, M.Bizzeti, A.Bucci, F.Iacopini, E.Lenti, M.Veltri, M.Antonelli, A.Moulson, M.Raggi, M.Spadaro, T.Eppard, K.Hita-Hochgesand, M.Kleinknecht, K.Renk, B.Wanke, R.Winhart, A.Winston, R.Bolotov, V.Duk, V.Gushchin, E.Ambrosino, F.Di Filippo, D.Massarotti, P.Napolitano, M.Palladino, V.Saracino, G.Anzivino, G.Imbergamo, E.Piandani, R.Sergi, A.Cenci, P.Pepe, M.Costantini, F.Doble, N.Giudici, S.Pierazzini, G.Sozzi, M.Venditti, S.Balev, S.Collazuol, G.DiLella, L.Gallorini, S.Goudzovski, E.Lamanna, G.Mannelli, I.Ruggiero, G.Cerri, C.Fantechi, R.Kurshetsov, V.Obraztsov, V.Popov, I.Semenov, V.Yushchenko, O.D'Agostini, G.Leonardi, E.Serra, M.Valente, P.Fucci, A.Salamon, A.Bloch-Devaux, B.Peyaud, B.Engelfried, J.Coward, D.Kozhuharov, V.Litov, L.Arcidiacono, R.Bifani, S.Biino, C.Dellacasa, G.Marchetto, F.Numao, T.Retiere, F.Precision Measurement of the Ratio of the Charged Kaon Leptonic Decay RatesParticle Physics - ExperimentA precision measurement of the ratio $R_K$ of the rates of kaon leptonic decays $K^\pm \to e^\pm\nu$ and $K^\pm \to \mu^\pm \nu$ with the full data sample collected by the NA62 experiment at CERN in $2007-2008$ is reported. The result, obtained by analysing $\sim\!150000$ reconstructed $K^\pm \to e^\pm \nu$ candidates with $11\%$ background contamination, is $R_K = (2.488\pm0.010)\times10^{-5}$, in agreement with the Standard Model expectation.A precision measurement of the ratio R_K of the rates of kaon leptonic decays K^+/-->e^+/-@n and K^+/-->@m^+/-@n with the full data sample collected by the NA62 experiment at CERN in 2007-2008 is reported. The result, obtained by analysing ~150000 reconstructed K^+/-->e^+/-@n candidates with 11% background contamination, is R_K=(2.488+/-0.010)x10^-^5, in agreement with the Standard Model expectation.A precision measurement of the ratio RK of the rates of kaon leptonic decays K±→e±ν and K±→μ±ν with the full data sample collected by the NA62 experiment at CERN in 2007–2008 is reported. The result, obtained by analysing ∼150000 reconstructed K±→e±ν candidates with 11% background contamination, is RK=(2.488±0.010)×10−5 , in agreement with the Standard Model expectation.A precision measurement of the ratio RK of the rates of kaon leptonic decays K+- --> e nu and K+- --> mu nu with the full data sample collected by the NA62 experiment at CERN in 2007-2008 is reported. The result, obtained by analysing ~150000 reconstructed K+- --> e nu candidates with 11% background contamination, is RK = (2.488+-0.010)*10^{-5}, in agreement with the Standard Model expectation.arXiv:1212.4012CERN-PH-EP-2012-367CERN-PH-EP-2012-367oai:cds.cern.ch:1434415oai:cds.cern.ch:15013942013-01-29
spellingShingle Particle Physics - Experiment
Lazzeroni, C.
Romano, A.
Ceccucci, A.
Danielsson, H.
Falaleev, V.
Gatignon, L.
Goy Lopez, S.
Hallgren, B.
Maier, A.
Peters, A.
Piccini, M.
Riedler, P.
Frabetti, P.L.
Gersabeck, E.
Kekelidze, V.
Madigozhin, D.
Misheva, M.
Molokanova, N.
Movchan, S.
Potrebenikov, Yu.
Shkarovskiy, S.
Zinchenko, A.
Rubin, P.
Baldini, W.
Cotta Ramusino, A.
Dalpiaz, P.
Fiorini, M.
Gianoli, A.
Norton, A.
Petrucci, F.
Savrie, M.
Bizzeti, A.
Bucci, F.
Iacopini, E.
Lenti, M.
Veltri, M.
Antonelli, A.
Moulson, M.
Raggi, M.
Spadaro, T.
Eppard, K.
Hita-Hochgesand, M.
Kleinknecht, K.
Renk, B.
Wanke, R.
Winhart, A.
Winston, R.
Bolotov, V.
Duk, V.
Gushchin, E.
Ambrosino, F.
Di Filippo, D.
Massarotti, P.
Napolitano, M.
Palladino, V.
Saracino, G.
Anzivino, G.
Imbergamo, E.
Piandani, R.
Sergi, A.
Cenci, P.
Pepe, M.
Costantini, F.
Doble, N.
Giudici, S.
Pierazzini, G.
Sozzi, M.
Venditti, S.
Balev, S.
Collazuol, G.
DiLella, L.
Gallorini, S.
Goudzovski, E.
Lamanna, G.
Mannelli, I.
Ruggiero, G.
Cerri, C.
Fantechi, R.
Kurshetsov, V.
Obraztsov, V.
Popov, I.
Semenov, V.
Yushchenko, O.
D'Agostini, G.
Leonardi, E.
Serra, M.
Valente, P.
Fucci, A.
Salamon, A.
Bloch-Devaux, B.
Peyaud, B.
Engelfried, J.
Coward, D.
Kozhuharov, V.
Litov, L.
Arcidiacono, R.
Bifani, S.
Biino, C.
Dellacasa, G.
Marchetto, F.
Numao, T.
Retiere, F.
Precision Measurement of the Ratio of the Charged Kaon Leptonic Decay Rates
title Precision Measurement of the Ratio of the Charged Kaon Leptonic Decay Rates
title_full Precision Measurement of the Ratio of the Charged Kaon Leptonic Decay Rates
title_fullStr Precision Measurement of the Ratio of the Charged Kaon Leptonic Decay Rates
title_full_unstemmed Precision Measurement of the Ratio of the Charged Kaon Leptonic Decay Rates
title_short Precision Measurement of the Ratio of the Charged Kaon Leptonic Decay Rates
title_sort precision measurement of the ratio of the charged kaon leptonic decay rates
topic Particle Physics - Experiment
url https://dx.doi.org/10.1016/j.physletb.2013.01.037
http://cds.cern.ch/record/1434415
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