Eur. Phys. J. C (2006) 47: 589-596
https://doi.org/10.1140/epjc/s2006-02617-4

Experimental Physics

Measurement of the DAΦNE luminosity with the KLOE detector using large angle Bhabha scattering

¹ Institute of High Energy Physics, Academica Sinica, Beijing, China
² Laboratori Nazionali di Frascati dell’INFN, Frascati, Italy
³ Institut für Experimentelle Kernphysik, Universität Karlsruhe, Karlsruhe, Germany
⁴ Dipartimento di Fisica, Università e Sezione INFN, Lecce, Italy
⁵ Institute for Theoretical and Experimental Physics, Moscow, Russia
⁶ Dipartimento di Scienze Fisiche, Università “Federico II” e Sezione INFN, Napoli, Italy
⁷ Dipartimento di Fisica, Università e Sezione INFN, Pisa, Italy
⁸ Dipartimento di Energetica, Università “La Sapienza”, Roma, Italy
⁹ Dipartimento di Fisica, Università “La Sapienza” e Sezione INFN, Roma, Italy
¹⁰ Dipartimento di Fisica, Università “Tor Vergata” e Sezione INFN, Roma, Italy
¹¹ Dipartimento di Fisica, Università “Roma Tre” e Sezione INFN, Roma, Italy
¹² Physics Department, State University of New York, Stony Brook, USA
¹³ Physics Department, University of Virginia, Charlottesville, USA

Received: 26 April 2006
Published online: 18 July 2006

Abstract

We describe the method of measuring the integrated luminosity of the e⁺e^- collider DAΦNE, the Frascati φ-factory. The measurement is done with the KLOE detector selecting large angle Bhabha scattering events and normalizing them to the effective cross section. The e⁺e^-→e⁺e^-(γ) cross section is calculated using different event generators which account for the radiative initial and final state corrections, and the φ resonance contribution. The accuracy of the measurement is 0.6%, where 0.3% comes from systematic errors related to the event counting and 0.5% from theoretical evaluations of the cross section.