Search for neutral heavy leptons in a high-energy neutrino beam

Details Search for neutral heavy leptons in a high-energy neutrino beam Search for neutral heavy leptons in a high-energy neutrino beam

Oct 2000

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2000phdt.........5v&link_type=abstract

Thesis (PhD). COLUMBIA UNIVERSITY, Source DAI-B 61/04, p. 2011, Oct 2000, 181 pages.

Computer Science

Scientific paper

A search for neutral heavy leptons (NHLs) has been performed using an instrumented decay channel at the NuTeV (E815) experiment at Fermilab. The decay channel was composed of helium bags interspersed with drift chambers, and was used in conjunction with the NuTeV neutrino detector to search for NHL decays. Our search was sensitive to isosinglet type neutral leptons with masses between 0.25 and 2.0 GeV. No evidence of NHLs was found. The experiment took place during the 1996-1997 Fermilab fixed-target run. Collected data were examined for NHLs decaying into muonic final states (μμν, μ eν, μπ and μρ). This analysis places limits on the mixing of NHLs with standard light neutrinos at a level up to an order of magnitude more restrictive than previous search limits in this mass range.

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