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SUMMARY:Search for n-nbar Oscillation in Super-Kamiokande I
DTSTART;VALUE=DATE-TIME:20070709T194500Z
DTEND;VALUE=DATE-TIME:20070709T194500Z
DTSTAMP;VALUE=DATE-TIME:20260617T161003Z
UID:indico-contribution-767@cern.ch
DESCRIPTION:Speakers: Prof. GANEZER\, Kenneth (California State University
 \, Dominguez Hills)\nA search for neutron-antineutron oscillation\, a |del
 ta B| = 2 process predicted \nby L-R symmetric gauge theories\, was undert
 aken using the 24.5 x 10^33 \nneutron-years of exposure in run one of Supe
 r-Kamiokande. When \nincorporating most major sources of systematic and st
 atistical errors we \ncalculate the upper limit on the oscillation lifetim
 e of neutrons in oxygen to be \n1.78 x 10^32 years at the 90% confidence l
 evel. Using the theoretical \nsuppression factor R=3.6 x 10^23 sec^-1\, th
 is result is equivalent to the free \nneutron oscillation limit of 1.25 x 
 10^8 seconds compared with .87 x 10^8 \nseconds obtained in the free neutr
 on experiment at Grenoble (1994). For the \npurpose of comparison with pre
 vious intranuclear experiments\, our upper limit \nwithout the inclusion o
 f systematic errors was found to be 3.20 x 10^32 years. \nThis is an impro
 vement by a factor of 7.4 over the previous best measurement \nin oxygen b
 y Kamiokande (1986) and 4.4 over the best measurement in iron by \nSoudan 
 (2002).\n\nhttps://indico.nucleares.unam.mx/event/4/session/40/contributio
 n/767
LOCATION:Merida\, Mexico Regency (Hyatt)
URL:https://indico.nucleares.unam.mx/event/4/session/40/contribution/767
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