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Dalitz plot analysis of e+e-→π0π0γ events at \(\sqrt{s} \simeq{M}_{\phi}\) with the KLOE detector

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Abstract

We have studied the Dalitz plot of the e+e-→π0π0γ events (Nπ0π0γ∼65000) collected at \(\sqrt{s} \simeq{M}_{\phi}\) with the KLOE detector. In the dipion invariant mass (Mππ) region below 700 MeV, the process under study is dominated by the non-resonant process e+e-→ωπ0 with ω→π0γ whereas, for higher Mππ values, the radiative φ 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 σ(600). For each model, we extract the f0(980) mass and its coupling to ππ, KK̄ and to the φ.

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Authors and Affiliations

  1. Institute of High Energy Physics, Academica Sinica, Beijing, China

    G. Xu

  2. Laboratori Nazionali di Frascati dell’INFN, Frascati, Italy

    A. Antonelli, M. Antonelli, G. Bencivenni, S. Bertolucci, C. Bloise, F. Bossi, D. Bowring, P. Campana,  G. Capon, S. Chi, P. Ciambrone, E. De Lucia, P. De Simone, S. Dell’Agnello, M. Dreucci, G. Felici, A. Ferrari, M.L. Ferrer, G. Finocchiaro, C. Forti, C. Gatti, S. Giovannella, G. Lanfranchi, J. Lee-Franzini, M. Martini, W. Mei, S. Miscetti, M. Moulson, S. Müller, F. Murtas, M. Palutan, V. Patera, P. Santangelo, B. Sciascia, A. Sciubba, I. Sfiligoi, T. Spadaro, G. Venanzoni, R. Versaci & G. Xu

  3. Institut für Experimentelle Kernphysik, Universität Karlsruhe, Karlsruhe, Germany

    P. Beltrame, A. Denig, W. Kluge, D. Leone & B. Valeriani

  4. Dipartimento di Fisica, Università e Sezione INFN, Lecce, Italy

    E. Gorini, M. Primavera & A. Ventura

  5. Institute for Theoretical and Experimental Physics, Moscow, Russia

    V. Kulikov

  6. Dipartimento di Scienze Fisiche, Università “Federico II” e Sezione INFN, Napoli, Italy

    F. Ambrosino, T. Capussela, G. Chiefari, C. Di Donato, A. Doria, P. Massarotti, S. Meola, M. Napolitano, F. Perfetto & G. Saracino

  7. Dipartimento di Fisica, Università e Sezione INFN, Pisa, Italy

    S. Di Falco, M. Incagli & F. Scuri

  8. Dipartimento di Energetica, Università “La Sapienza”, Roma, Italy

    V. Patera & A. Sciubba

  9. Dipartimento di Fisica, Università “La Sapienza” e Sezione INFN, Roma, Italy

    C. Bini, V. Bocci, R. Caloi,  A. De Santis, G. De Zorzi, A. Di Domenico, S. Fiore, P. Franzini, P. Gauzzi, F. Lacava, E. Pasqualucci, L. Pontecorvo, M. Testa, P. Valente & S. Veneziano

  10. Dipartimento di Fisica, Università “Tor Vergata” e Sezione INFN, Roma, Italy

    E. Santovetti

  11. Dipartimento di Fisica, Università “Roma Tre” e Sezione INFN, Roma, Italy

    C. Bacci, S. Bocchetta, P. Branchini, F. Ceradini, B. Di Micco, E. Graziani, F. Nguyen, A. Passeri &  L. Tortora

  12. Physics Department, State University of New York, Stony Brook, USA

    J. Lee-Franzini

  13. Physics Department, University of Virginia, Charlottesville, USA

    D. Bowring & S. Conetti

Authors
  1. F. Ambrosino
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  2. A. Antonelli
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  3. M. Antonelli
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  4. C. Bacci
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  5. P. Beltrame
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  6. G. Bencivenni
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  7. S. Bertolucci
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  8. C. Bini
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  9. C. Bloise
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  13. D. Bowring
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  15. R. Caloi
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  16. P. Campana
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  17. G. Capon
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  18. T. Capussela
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  19. F. Ceradini
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  20. S. Chi
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  21. G. Chiefari
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  22. P. Ciambrone
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  23. S. Conetti
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  24. E. De Lucia
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  28. S. Dell’Agnello
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  29. A. Denig
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  31. C. Di Donato
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  34. A. Doria
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  36. G. Felici
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  41. C. Forti
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  42. P. Franzini
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  54. D. Leone
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  58. S. Meola
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  59. S. Miscetti
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  60. M. Moulson
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  61. S. Müller
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  63. M. Napolitano
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  64. F. Nguyen
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  65. M. Palutan
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  66. E. Pasqualucci
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  76. A. Sciubba
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  78. I. Sfiligoi
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  79. T. Spadaro
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  80. M. Testa
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  81. L. Tortora
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  82. P. Valente
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  84. G. Venanzoni
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  85. S. Veneziano
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  86. A. Ventura
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  87. R. Versaci
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  88. G. Xu
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The KLOE Collaboration

Corresponding author

Correspondence to S. Giovannella.

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Ambrosino, F., Antonelli, A., Antonelli, M. et al. Dalitz plot analysis of e+e-→π0π0γ events at \(\sqrt{s} \simeq{M}_{\phi}\) with the KLOE detector. Eur. Phys. J. C 49, 473–488 (2007). https://doi.org/10.1140/epjc/s10052-006-0157-7

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