Dalitz plot analysis of e+e- --> pi zero pi zero gamma events with the KLOE detector
| Autoři: | BACCI, Cesare, CERADINI, Filippo, DI MICCO, Biagio, NGUYEN, FEDERICO, BOCCHETTA S., AMBROSINO F. |
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| Přispěvatelé: | Bacci, Cesare, Ceradini, Filippo, DI MICCO, Biagio, Nguyen, Federico, Bocchetta, S., Ambrosino, F. |
| Rok vydání: | 2007 |
| Témata: | Dalitz plot, e+e- collision, ? decay, High Energy Physics::Experiment, scalar meson, Nuclear Experiment, symmetrie |
| Popis: | We have studied the Dalitz plot of the e+e- -> pi0 pi0 gamma events collected at sqrt(s) ~ m(phi) with the KLOE detector. In the dipion invariant mass region below 700 MeV, the process under study is dominated by the non-resonant process e+e- -> omega pi0 with omega -> pi0 gamma whereas, for higher mass values, the radiative phi decay to the f0(980) is the dominant mechanism. Different theoretical models are used to fit the Dalitz plot, taking also into account a possible contribution of the sigma(600). For each model, we extract the f0(980) mass and its coupling to pipi, KKbar and to the phi. |
| Popis souboru: | ELETTRONICO |
| Jazyk: | Italian |
| Přístupová URL adresa: | https://explore.openaire.eu/search/publication?articleId=od______3668::a7033101a8553781d4133db3485b33b0 https://hdl.handle.net/11590/270375 |
| Rights: | OPEN |
| Přírůstkové číslo: | edsair.od......3668..a7033101a8553781d4133db3485b33b0 |
| Autor: | BACCI, Cesare, CERADINI, Filippo, DI MICCO, Biagio, NGUYEN, FEDERICO, BOCCHETTA S., AMBROSINO F. |
| Přispěvatelé: | Bacci, Cesare, Ceradini, Filippo, DI MICCO, Biagio, Nguyen, Federico, Bocchetta, S., Ambrosino, F. |
| Jazyk: | italština |
| Rok vydání: | 2007 |
| Předmět: | |
| Popis: | We have studied the Dalitz plot of the e+e- -> pi0 pi0 gamma events collected at sqrt(s) ~ m(phi) with the KLOE detector. In the dipion invariant mass region below 700 MeV, the process under study is dominated by the non-resonant process e+e- -> omega pi0 with omega -> pi0 gamma whereas, for higher mass values, the radiative phi decay to the f0(980) is the dominant mechanism. Different theoretical models are used to fit the Dalitz plot, taking also into account a possible contribution of the sigma(600). For each model, we extract the f0(980) mass and its coupling to pipi, KKbar and to the phi. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
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