OK, thank you for the information. On Sat, Mar 17, 2012 at 2:21 PM, Javier Serrano < [email protected]> wrote:
> On Fri, Mar 16, 2012 at 11:44 PM, Javier Herrero <[email protected]> > wrote: > > Hello, > > Javier Serrano can confirm it for sure, but I think that the article with > > the OPERA results is based on data from 2009 to 2011, not from data taken > > the previous day :) > > Exactly. OPERA first published a result based on several years of > data taking prior to the summer 2011. These results were criticized on > several fronts, most of which had to do with the 10us-wide proton > distribution at the exit of CERN's Super Proton Synchrotron (SPS). > Then it was decided to have a short run in December 2011 with > 524ns-spaced proton bunches, so that neutrinos detected in Laboratori > Nazionali del Gran Sasso (LNGS) could be unequivocally assigned to a > single bunch. These bunches are around 1ns-wide. I think the four > experiments in LNGS (OPERA, Icarus, Borexino and LVD) saw neutrino > events during that run. For OPERA, these events confirmed their > previous result, and they extended their original paper accordingly. > This now is the publication of the Icarus results, based on 7 neutrino > events. The time link between CERN's SPS and Icarus is different from > the CERN-OPERA link only in the last stretch, where the dedicated > OPERA and Icarus data-taking electronics reside. It's soon to conclude > where the difference in results could come from. I personally don't > know that last stretch well enough to comment. In any case, we will > have another dedicated run with spaced bunches later in the Spring, > and then all four experiments will be ready to publish a result quite > quickly. In addition, our American friends in Fermilab and MINOS > should be able to get a result as well some time in 2012. So we're > entering now some very interesting months! > > Cheers, > > Javier > > _______________________________________________ > time-nuts mailing list -- [email protected] > To unsubscribe, go to > https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts > and follow the instructions there. > _______________________________________________ time-nuts mailing list -- [email protected] To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts and follow the instructions there.
