Abstract
The DAΦNE e+e− collider operates at the center of mass energy \( \sqrt s \) = 1020 MeV, the mass of the ø(1020)-meson. Since 2001, KLOE has collected an integrated luminosity of about 2.5 fb−1. Results presented below are based on ∼ 450 pb−1. The KLOE detector consists of a large cylindrical drift chamber surrounded by a lead/scintillating-fiber electromagnetic calorimeter. A superconducting coil around the detector provides a 0.52T magnetic field. The drift chamber [1], is 4m diameter and 3.3m long. The momentum resolution is σ(p T )/p T ∼ 0.4%. Two track vertices are reconstructed with a spatial resolution of ∼ 3mm. The calorimeter [2], composed of a barrel and two endcaps, covers 98% of the solid angle. Energy and time resolutions are σ(E)/E = 5.7%/\( \sqrt {E[GeV]} \) and σ(t) = 57ps/\( \sqrt {E[GeV]} \) ⊕ 100 ps. The KLOE trigger [3], uses calorimeter and drift chamber information. For the present analysis only the calorimeter triggers have been used.
KLOE collaboration: F. Ambrosino, A. Antonelli, M. Antonelli, F. Archilli, C. Bacci, P. Beltrame, G. Bencivenni, S. Bertolucci, C. Bini, C. Bloise, S. Bocchetta, F. Bossi, P. Branchini, R. Caloi, P. Campana, G. Capon, T. Capussela, F. Ceradini, S. Chi, G. Chiefari, P. Ciambrone, E. De Lucia, A. De Santis, P. De Simone, G. De Zorzi, A. Denig, A. Di Domenico, C. Di Donato, S. Di Falco, B. Di Micco, A. Doria, M. Dreucci, G. Felici, A. Ferrari, M.L. Ferrer, G. Finocchiaro, S. Fiore, C. Forti, P. Franzini, C. Gatti, P. Gauzzi, S. Giovannella, E. Gorini, E. Graziani, M. Incagli, W. Kluge, V. Kulikov, F. Lacava, G. Lanfranchi, J. Lee-Franzini, D. Leone, M. Martini, P. Massarotti, W. Mei, S. Meola†, S. Miscetti, M. Moulson, S. Müller, F. Murtas, M. Napolitano, F. Nguyen, M. Palutan, E. Pasqualucci, A. Passeri, V. Patera, F. Perfetto, M. Primavera, P. Santangelo, G. Saracino, B. Sciascia, A. Sciubba, F. Scuri, I. Sfiligoi, T. Spadaro,M. Testa, L. Tortora, P. Valente, G. Venanzoni, R. Versaci, G. Xu
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(2008). Charged Kaons and V us at KLOE. In: Carlino, G., D’Ambrosio, G., Merola, L., Paolucci, P., Ricciardi, G. (eds) IFAE 2007. Springer, Milano. https://doi.org/10.1007/978-88-470-0747-5_23
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DOI: https://doi.org/10.1007/978-88-470-0747-5_23
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