In spring 2003 the FINUDA detector was installed at the 0 factory DA Phi NE in the Laboratori Nazionali di Frascati of INFN (Italy). In October 2003 the commissioning of the apparatus was accomplished and the first data taking started with a set of nuclear targets (6)Li, (7)Li, (nat)C, (27)Al, (51)V. The data collection will continue until a total integrated luminosity of 250 pb(-1) is recorded. Light and medium A hypernuclei will be abundantly produced by the strangeness exchange reaction induced by the stopped K(-) coming from the decay of phi (1020) mesons. The aim of the experiment is to simultaneously measure the excitation energy spectra of the produced hypemuclei, with a resolution better than 1 MeV, the lifetime of the A embedded in the different hypernuclei and the partial widths Gamma(pi), Gamma(np) and Gamma(nn) for mesonic and non-mesonic hypernuclear decays. Information on neutron-rich hypernuclei and rare hypernuclear two-body decays might be available too, with the statistics that will be collected at the end of the run. In the present paper, first results concerning in-beam detector calibration, spectrometer performances and very preliminary hypernuclear formation and decay spectra will be presented. (c) 2005 Elsevier B.V. All rights reserved.

First results from the FINUDA experiment at DA phi NE

FIORE, Enrichetta Maria;
2005-01-01

Abstract

In spring 2003 the FINUDA detector was installed at the 0 factory DA Phi NE in the Laboratori Nazionali di Frascati of INFN (Italy). In October 2003 the commissioning of the apparatus was accomplished and the first data taking started with a set of nuclear targets (6)Li, (7)Li, (nat)C, (27)Al, (51)V. The data collection will continue until a total integrated luminosity of 250 pb(-1) is recorded. Light and medium A hypernuclei will be abundantly produced by the strangeness exchange reaction induced by the stopped K(-) coming from the decay of phi (1020) mesons. The aim of the experiment is to simultaneously measure the excitation energy spectra of the produced hypemuclei, with a resolution better than 1 MeV, the lifetime of the A embedded in the different hypernuclei and the partial widths Gamma(pi), Gamma(np) and Gamma(nn) for mesonic and non-mesonic hypernuclear decays. Information on neutron-rich hypernuclei and rare hypernuclear two-body decays might be available too, with the statistics that will be collected at the end of the run. In the present paper, first results concerning in-beam detector calibration, spectrometer performances and very preliminary hypernuclear formation and decay spectra will be presented. (c) 2005 Elsevier B.V. All rights reserved.
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11586/105786
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