Search for low energy ν in correlation with the 8 events observed by the EXPLORER and NAUTILUS detectors in 2001^*

¹ IFSI - CNR, Torino, University of Torino and INFN-Torino, Italy
² University of Bologna and INFN-Bologna, Italy
³ University of Campinas, Campinas, Brazil
⁴ Institute for Nuclear Research, Russian Academy of Sciences, Moscow, Russia
⁵ Massachusetts Institute of Technology, Cambridge, USA
⁶ INFN-LNF, Frascati, Italy

Corresponding author: W. Fulgione, fulgione@to.infn.it

Received: 11 February 2004
Accepted: 15 March 2004

Abstract

We report on a search for low-energy neutrino (antineutrino) bursts in correlation with the 8 time coincident events observed by the gravitational waves detectors EXPLORER and NAUTILUS (GWD) during the year 2001. The search, conducted with the LVD detector (INFN Gran Sasso National Laboratory, Italy), has considered several neutrino reactions, corresponding to different neutrino species, and a wide range of time intervals around the (GWD) observed events. No evidence for statistically significant correlated signals in LVD has been found. Assuming two different origins for neutrino emission, the cooling of a neutron star from a core-collapse supernova or from coalescing neutron stars and the accretion of shocked matter, and taking into account neutrino oscillations, we derive limits to the total energy emitted in neutrinos and to the amount of accreting mass, respectively.