Low Energy Qcd And Chpt Studies With Kloe

Fabio Ambrosino,Angelo Antonelli,Mario Antonelli,Flavio Archilli,Paolo Beltrame,Giorgio Bencivenni,Cesare Bini,Caterina Bloise,Simona Serena Bocchetta,Fabio C. Bossi,Paolo Branchini,G. Capon,Tiziana Capussela,Filippo Ceradini,Paolo Ciambrone,Erika De Lucia,Antonio De Santis,Patrizia De Simone,G. De Zorzi,Achim G. Denig,Antonio Di I Domenico,Camilla Di Donato,Biagio D. Di Micco,Marco Dreucci,Giuseppe Felici,S. Fiore,Paolo Franzini,Claudio Gatti,Paolo Gauzzi,Simona Giovannella,Enrico Graziani,M. Jacewicz,Gaia Lanfranchi,Juliet Lee-Franzini,Manuele Martini,Paolo Massarotti,Sabino Meola,Stefano Miscetti,Matthew Moulson,Stefan E. Müller,Fabrizio Murtas,Mario Napolitano,F. Nguyen,Matteo Palutan,Antonio Passeri,Vincenzo Patera,P. Santangelo,Barbara Sciascia,Tommaso Spadaro,L. Tortora,Paolo Valente,Graziano Venanzoni,Roberto Versaci,Guofa Xu

NUOVO CIMENTO C-COLLOQUIA AND COMMUNICATIONS IN PHYSICS（2010）

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摘要

The KLOE experiment is situated at the phi factory DA Phi NE in Frascati. phi radiative decays have been used to investigate the properties of the light scalar mesons f(0)(980)/ alpha(0)(980), whose structure is still controversial. Off-peak data allow to investigate.. interaction with a consequent scalar/pseudoscalar meson production. From the large sample of the eta and eta' produced in phi -> eta gamma decay we have studied several. and. eta' decays relevant to eta/eta' mixing, eta' gluonium content, CP violation searches and tests of ChPT. For the hadronic cross section, the pion form factor in the M-pi pi invariant mass range (0.592-0.975) GeV has been determined and used in the evaluation of the hadronic contribution to the muon anomaly. The result confirms the 3-sigma discrepancy between SM expectation and the measurement of the muon (g - 2) by the E821 experiment at the BNL.

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