Measurement of $\Gamma(\eta \to \pi^+\pi^-\gamma)/\Gamma(\eta \to \pi^+\pi^-\pi^0)$ with KLOE experiment

We report the measurement of the ratio $\Gamma(\eta \to \pi^+\pi^-\gamma)/\Gamma(\eta \to \pi^+\pi^-\pi^0)$ analyzing a large sample of $\phi \to \eta \gamma$ decays recorded with the KLOE experiment at the DA$\Phi$NE $e^+ e^-$ collider, corresponding to an integrated luminosity of 558 pb$^{-1}$. Th...

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Detalles Bibliográficos
Autores principales: Ambrosino, F., Antonelli, A., Antonelli, M., Archilli, F., Balwierz, I., Bencivenni, G., Bini, C., Bloise, C., Bocchetta, S., Bossi, F., Branchini, P., Capon, G., Capussela, T., Ceradini, F., Ciambrone, P., Czerwiński, E., De Lucia, E., De Santis, A., De Simone, P., De Zorzi, G., Denig, A., Di Domenico, A., Di Donato, C., Di Micco, B., Dreucci, M., Felici, G., Fiore, S., Franzini, P., Gatti, C., Gauzzi, P., Giovannella, S., Graziani, E., Jacewicz, M., Lee-Franzini, J., Martemianov, M., Martini, M., Massarotti, P., Meola, S., Miscetti, S., Morello, G., Moulson, M., Müller, S., Napolitano, M., Nguyen, F., Palutan, M., Passeri, A., Patera, V., Prado Longhi, I., Santangelo, P., Sciascia, B., Silarski, M., Spadaro, T., Taccini, C., Tortora, L., Venanzoni, G., Versaci, R., Xu, G., Zdebik, J., Babusci, D., Badoni, D., Bocci, V., Budano, A., Bulychjev, S.A., Campana, P., Dané, E., De Robertis, G., Domenici, D., Erriquez, O., Fanizzi, G., Gonnella, F., Happacher, F., Höistad, B., Iarocci, E., Johansson, T., Kulikov, V., Kupsc, A., Loddo, F., Matsyuk, M., Messi, R., Moricciani, D., Moskal, P., Ranieri, A., Sarra, I., Schioppa, M., Sciubba, A., Wiślicki, W., Wolke, M.
Lenguaje:eng
Publicado: 2011
Materias:
Particle Physics - Experiment
Acceso en línea:http://cds.cern.ch/record/1371691
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author Ambrosino, F.
Antonelli, A.
Antonelli, M.
Archilli, F.
Balwierz, I.
Bencivenni, G.
Bini, C.
Bloise, C.
Bocchetta, S.
Bossi, F.
Branchini, P.
Capon, G.
Capussela, T.
Ceradini, F.
Ciambrone, P.
Czerwiński, E.
De Lucia, E.
De Santis, A.
De Simone, P.
De Zorzi, G.
Denig, A.
Di Domenico, A.
Di Donato, C.
Di Micco, B.
Dreucci, M.
Felici, G.
Fiore, S.
Franzini, P.
Gatti, C.
Gauzzi, P.
Giovannella, S.
Graziani, E.
Jacewicz, M.
Lee-Franzini, J.
Martemianov, M.
Martini, M.
Massarotti, P.
Meola, S.
Miscetti, S.
Morello, G.
Moulson, M.
Müller, S.
Napolitano, M.
Nguyen, F.
Palutan, M.
Passeri, A.
Patera, V.
Prado Longhi, I.
Santangelo, P.
Sciascia, B.
Silarski, M.
Spadaro, T.
Taccini, C.
Tortora, L.
Venanzoni, G.
Versaci, R.
Xu, G.
Zdebik, J.
Babusci, D.
Badoni, D.
Bocci, V.
Budano, A.
Bulychjev, S.A.
Campana, P.
Dané, E.
De Robertis, G.
Domenici, D.
Erriquez, O.
Fanizzi, G.
Gonnella, F.
Happacher, F.
Höistad, B.
Iarocci, E.
Johansson, T.
Kulikov, V.
Kupsc, A.
Loddo, F.
Matsyuk, M.
Messi, R.
Moricciani, D.
Moskal, P.
Ranieri, A.
Sarra, I.
Schioppa, M.
Sciubba, A.
Wiślicki, W.
Wolke, M.
author_facet Ambrosino, F.
Antonelli, A.
Antonelli, M.
Archilli, F.
Balwierz, I.
Bencivenni, G.
Bini, C.
Bloise, C.
Bocchetta, S.
Bossi, F.
Branchini, P.
Capon, G.
Capussela, T.
Ceradini, F.
Ciambrone, P.
Czerwiński, E.
De Lucia, E.
De Santis, A.
De Simone, P.
De Zorzi, G.
Denig, A.
Di Domenico, A.
Di Donato, C.
Di Micco, B.
Dreucci, M.
Felici, G.
Fiore, S.
Franzini, P.
Gatti, C.
Gauzzi, P.
Giovannella, S.
Graziani, E.
Jacewicz, M.
Lee-Franzini, J.
Martemianov, M.
Martini, M.
Massarotti, P.
Meola, S.
Miscetti, S.
Morello, G.
Moulson, M.
Müller, S.
Napolitano, M.
Nguyen, F.
Palutan, M.
Passeri, A.
Patera, V.
Prado Longhi, I.
Santangelo, P.
Sciascia, B.
Silarski, M.
Spadaro, T.
Taccini, C.
Tortora, L.
Venanzoni, G.
Versaci, R.
Xu, G.
Zdebik, J.
Babusci, D.
Badoni, D.
Bocci, V.
Budano, A.
Bulychjev, S.A.
Campana, P.
Dané, E.
De Robertis, G.
Domenici, D.
Erriquez, O.
Fanizzi, G.
Gonnella, F.
Happacher, F.
Höistad, B.
Iarocci, E.
Johansson, T.
Kulikov, V.
Kupsc, A.
Loddo, F.
Matsyuk, M.
Messi, R.
Moricciani, D.
Moskal, P.
Ranieri, A.
Sarra, I.
Schioppa, M.
Sciubba, A.
Wiślicki, W.
Wolke, M.
author_sort Ambrosino, F.
collection CERN
description We report the measurement of the ratio $\Gamma(\eta \to \pi^+\pi^-\gamma)/\Gamma(\eta \to \pi^+\pi^-\pi^0)$ analyzing a large sample of $\phi \to \eta \gamma$ decays recorded with the KLOE experiment at the DA$\Phi$NE $e^+ e^-$ collider, corresponding to an integrated luminosity of 558 pb$^{-1}$. The $\eta \to \pi^+\pi^-\gamma$ process is supposed to proceed both via a resonant contribution, mediated by the $\rho$ meson, and a non resonant direct term, connected to the box anomaly. The presence of the direct term affects the partial width value. Our result $R_{\eta}=\Gamma(\eta \to \pi^+ \pi^- \gamma)/\Gamma(\eta \to \pi^+ \pi^- \pi^0)= 0.1838\pm 0.0005_{stat} \pm 0.0030_{syst}$ is in agreement with a recent CLEO measurement, which differs by more 3 $\sigma$ from the average of previous results.
id cern-1371691
institution Organización Europea para la Investigación Nuclear
language eng
publishDate 2011
record_format invenio
spelling cern-13716912023-03-14T19:03:31Zhttp://cds.cern.ch/record/1371691engAmbrosino, F.Antonelli, A.Antonelli, M.Archilli, F.Balwierz, I.Bencivenni, G.Bini, C.Bloise, C.Bocchetta, S.Bossi, F.Branchini, P.Capon, G.Capussela, T.Ceradini, F.Ciambrone, P.Czerwiński, E.De Lucia, E.De Santis, A.De Simone, P.De Zorzi, G.Denig, A.Di Domenico, A.Di Donato, C.Di Micco, B.Dreucci, M.Felici, G.Fiore, S.Franzini, P.Gatti, C.Gauzzi, P.Giovannella, S.Graziani, E.Jacewicz, M.Lee-Franzini, J.Martemianov, M.Martini, M.Massarotti, P.Meola, S.Miscetti, S.Morello, G.Moulson, M.Müller, S.Napolitano, M.Nguyen, F.Palutan, M.Passeri, A.Patera, V.Prado Longhi, I.Santangelo, P.Sciascia, B.Silarski, M.Spadaro, T.Taccini, C.Tortora, L.Venanzoni, G.Versaci, R.Xu, G.Zdebik, J.Babusci, D.Badoni, D.Bocci, V.Budano, A.Bulychjev, S.A.Campana, P.Dané, E.De Robertis, G.Domenici, D.Erriquez, O.Fanizzi, G.Gonnella, F.Happacher, F.Höistad, B.Iarocci, E.Johansson, T.Kulikov, V.Kupsc, A.Loddo, F.Matsyuk, M.Messi, R.Moricciani, D.Moskal, P.Ranieri, A.Sarra, I.Schioppa, M.Sciubba, A.Wiślicki, W.Wolke, M.Measurement of $\Gamma(\eta \to \pi^+\pi^-\gamma)/\Gamma(\eta \to \pi^+\pi^-\pi^0)$ with KLOE experimentParticle Physics - ExperimentWe report the measurement of the ratio $\Gamma(\eta \to \pi^+\pi^-\gamma)/\Gamma(\eta \to \pi^+\pi^-\pi^0)$ analyzing a large sample of $\phi \to \eta \gamma$ decays recorded with the KLOE experiment at the DA$\Phi$NE $e^+ e^-$ collider, corresponding to an integrated luminosity of 558 pb$^{-1}$. The $\eta \to \pi^+\pi^-\gamma$ process is supposed to proceed both via a resonant contribution, mediated by the $\rho$ meson, and a non resonant direct term, connected to the box anomaly. The presence of the direct term affects the partial width value. Our result $R_{\eta}=\Gamma(\eta \to \pi^+ \pi^- \gamma)/\Gamma(\eta \to \pi^+ \pi^- \pi^0)= 0.1838\pm 0.0005_{stat} \pm 0.0030_{syst}$ is in agreement with a recent CLEO measurement, which differs by more 3 $\sigma$ from the average of previous results.We report the measurement of the ratio $\Gamma(\eta \to \pi^+\pi^-\gamma)/\Gamma(\eta \to \pi^+\pi^-\pi^0)$ analyzing a large sample of $\phi \to \eta \gamma$ decays recorded with the KLOE experiment at the DA$\Phi$NE $e^+ e^-$ collider, corresponding to an integrated luminosity of 558 pb$^{-1}$. The $\eta \to \pi^+\pi^-\gamma$ process is supposed to proceed both via a resonant contribution, mediated by the $\rho$ meson, and a non resonant direct term, connected to the box anomaly. The presence of the direct term affects the partial width value. Our result $R_{\eta}=\Gamma(\eta \to \pi^+ \pi^- \gamma)/\Gamma(\eta \to \pi^+ \pi^- \pi^0)= 0.1838\pm 0.0005_{stat} \pm 0.0030_{syst}$ is in agreement with a recent CLEO measurement, which differs by more 3 $\sigma$ from the average of previous results.arXiv:1107.5733oai:cds.cern.ch:13716912011-07-29
spellingShingle Particle Physics - Experiment
Ambrosino, F.
Antonelli, A.
Antonelli, M.
Archilli, F.
Balwierz, I.
Bencivenni, G.
Bini, C.
Bloise, C.
Bocchetta, S.
Bossi, F.
Branchini, P.
Capon, G.
Capussela, T.
Ceradini, F.
Ciambrone, P.
Czerwiński, E.
De Lucia, E.
De Santis, A.
De Simone, P.
De Zorzi, G.
Denig, A.
Di Domenico, A.
Di Donato, C.
Di Micco, B.
Dreucci, M.
Felici, G.
Fiore, S.
Franzini, P.
Gatti, C.
Gauzzi, P.
Giovannella, S.
Graziani, E.
Jacewicz, M.
Lee-Franzini, J.
Martemianov, M.
Martini, M.
Massarotti, P.
Meola, S.
Miscetti, S.
Morello, G.
Moulson, M.
Müller, S.
Napolitano, M.
Nguyen, F.
Palutan, M.
Passeri, A.
Patera, V.
Prado Longhi, I.
Santangelo, P.
Sciascia, B.
Silarski, M.
Spadaro, T.
Taccini, C.
Tortora, L.
Venanzoni, G.
Versaci, R.
Xu, G.
Zdebik, J.
Babusci, D.
Badoni, D.
Bocci, V.
Budano, A.
Bulychjev, S.A.
Campana, P.
Dané, E.
De Robertis, G.
Domenici, D.
Erriquez, O.
Fanizzi, G.
Gonnella, F.
Happacher, F.
Höistad, B.
Iarocci, E.
Johansson, T.
Kulikov, V.
Kupsc, A.
Loddo, F.
Matsyuk, M.
Messi, R.
Moricciani, D.
Moskal, P.
Ranieri, A.
Sarra, I.
Schioppa, M.
Sciubba, A.
Wiślicki, W.
Wolke, M.
Measurement of $\Gamma(\eta \to \pi^+\pi^-\gamma)/\Gamma(\eta \to \pi^+\pi^-\pi^0)$ with KLOE experiment
title Measurement of $\Gamma(\eta \to \pi^+\pi^-\gamma)/\Gamma(\eta \to \pi^+\pi^-\pi^0)$ with KLOE experiment
title_full Measurement of $\Gamma(\eta \to \pi^+\pi^-\gamma)/\Gamma(\eta \to \pi^+\pi^-\pi^0)$ with KLOE experiment
title_fullStr Measurement of $\Gamma(\eta \to \pi^+\pi^-\gamma)/\Gamma(\eta \to \pi^+\pi^-\pi^0)$ with KLOE experiment
title_full_unstemmed Measurement of $\Gamma(\eta \to \pi^+\pi^-\gamma)/\Gamma(\eta \to \pi^+\pi^-\pi^0)$ with KLOE experiment
title_short Measurement of $\Gamma(\eta \to \pi^+\pi^-\gamma)/\Gamma(\eta \to \pi^+\pi^-\pi^0)$ with KLOE experiment
title_sort measurement of $\gamma(\eta \to \pi^+\pi^-\gamma)/\gamma(\eta \to \pi^+\pi^-\pi^0)$ with kloe experiment
topic Particle Physics - Experiment
url http://cds.cern.ch/record/1371691
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