Search for nucleon decay with final states {ell}+{eta}{sup o}, {ovr nu}{eta}{sup o}, and {ovr nu}{pi}{sup =,o} using Soudan 2.
Journal Article
·
· Phys. Rev. D
OSTI ID:942792
We have searched for nucleon decay into five two-body final states using a 4.4 kiloton-year fiducial exposure of the Soudan 2 iron tracking calorimeter. For proton decay into the fully visible final states {mu}{sup +}{eta}{sup 0} and e{sup +}{eta}{sup 0}, we observe zero and one event, respectively, that satisfy our search criteria for nucleon delay. The lifetime lower limits (t/B) thus implied are 89 x 10{sup 30} years and 81 x 10{sup 30} years at 90% confidence level. For neutron decay into {ovr eta}{sup 0}, we obtain the lifetime lower limit 71 x 10{sup 30} years. Limits are also reported for neutron decay into {ovr {pi}}{sup 0}, and for proton decay in {pi}{sup +}.
- Research Organization:
- Argonne National Laboratory (ANL)
- Sponsoring Organization:
- SC; FOR; OUS
- DOE Contract Number:
- AC02-06CH11357
- OSTI ID:
- 942792
- Report Number(s):
- ANL-HEP-PR-99-124
- Journal Information:
- Phys. Rev. D, Journal Name: Phys. Rev. D Journal Issue: 9 ; Nov. 1, 2000 Vol. 6209; ISSN PRVDAQ; ISSN 1550-7998
- Country of Publication:
- United States
- Language:
- ENGLISH
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