English

$\gamma\gamma$ physics with the KLOE experiment

High Energy Physics - Experiment 2011-07-20 v1

Abstract

The processes e+ee+eXe^+e^-\to e^+e^-X, with XX being either the η\eta meson or π0π0\pi^0\pi^0, are studied at DAΦ\PhiNE, with e+ee^+e^- beams colliding at s1\sqrt{s}\simeq1 GeV, below the ϕ\phi resonance peak. The data sample is from an integrated luminosity of 240 pb1^{-1}, collected by the KLOE experiment without tagging of the outgoing e+ee^+e^-. Preliminary results are presented on the observation of the γγη\gamma\gamma\to\eta process, with both ηπ+ππ0\eta\to\pi^+\pi^-\pi^0 and ηπ0π0π0\eta\to\pi^0\pi^0\pi^0 channels, and the evidence for γγπ0π0\gamma\gamma\to\pi^0\pi^0 production at low π0π0\pi^0\pi^0 invariant mass.

Keywords

Cite

@article{arxiv.1107.3782,
  title  = {$\gamma\gamma$ physics with the KLOE experiment},
  author = {2 Collaboration and F. Archilli and D. Babusci and D. Badoni and I. Balwierz and G. Bencivenni and C. Bini and C. Bloise and V. Bocci and F. Bossi and P. Branchini and A. Budano and S. A. Bulychjev and P. Campana and G. Capon and F. Ceradini and P. Ciambrone and E. Czerwinski and E. Dane and E. De Lucia and G. De Robertis and A. De Santis and G. De Zorzi and A. Di Domenico and C. Di Donato and D. Domenici and O. Erriquez and G. Fanizzi and G. Felici and S. Fiore and P. Franzini and P. Gauzzi and S. Giovannella and F. Gonnella and E. Graziani and F. Happacher and B. Hoistad and E. Iarocci and M. Jacewicz and T. Johansson and V. Kulikov and A. Kupsc and J. Lee-Franzini and F. Loddo and M. Martemianov and M. Martini and M. Matsyuk and R. Messi and S. Miscetti and G. Morello and D. Moricciani and P. Moskal and F. Nguyen and A. Passeri and V. Patera and I. Prado Longhi and A. Ranieri and P. Santangelo and I. Sarra and M. Schioppa and B. Sciascia and A. Sciubba and M. Silarski and C. Taccini and L. Tortora and G. Venanzoni and R. Versaci and W. Wislicki and M. Wolke and J. Zdebik},
  journal= {arXiv preprint arXiv:1107.3782},
  year   = {2011}
}

Comments

Contributed paper to the Lepton-Photon 2011 Conference

R2 v1 2026-06-21T18:39:00.114Z