Mañana, JUEVES, 24 DE ABRIL, el sistema se apagará debido a tareas habituales de mantenimiento a partir de las 9 de la mañana. Lamentamos las molestias.
Search for dinucleon decay into pions at Super-Kamiokande
Entity
UAM. Departamento de Física TeóricaPublisher
American Physical SocietyDate
2015-04-28Citation
10.1103/PhysRevD.91.072009
Physical Review D 91.7 (2015): 072009
ISSN
1550-7998 (print); 1550-2368 (online)DOI
10.1103/PhysRevD.91.072009Funded by
We gratefully acknowledge the cooperation of the Kamioka Mining and Smelting Company. The Super- Kamiokande experiment has been built and operated from funding by the Japanese Ministry of Education, Culture, Sports, Science and Technology, the United States Department of Energy, and the U.S. National Science Foundation. This work was partially supported by the Research Foundation of Korea (BK21 and KNRC), the Korean Ministry of Science and Technology, the National Science Foundation of China, the European Union FP7 (DS laguna-lbno PN-284518 and ITN invisibles GA-2011- 289442), the National Science and Engineering Research Council (NSERC) of Canada, and the Scinet and West-grid consortia of Compute CanadaProject
info:eu-repo/grantAgreement/EC/FP7/284518; info:eu-repo/grantAgreement/EC/FP7/289442Editor's Version
http://dx.doi.org/10.1103/PhysRevD.91.072009Subjects
FísicaNote
Artículo escrito por un elevado número de autores, solo se referencian el que aparece en primer lugar, el nombre del grupo de colaboración, si le hubiere, y los autores pertenecientes a la UAMRights
© 2015 American Physical SocietyAbstract
A search for dinucleon decay into pions with the Super-Kamiokande detector has been performed with an exposure of 282.1 kiloton-years. Dinucleon decay is a process that violates baryon number by two units. We present the first search for dinucleon decay to pions in a large water-Cherenkov detector. The modes O16(pp)→C14π+π+, O16(pn)→N14π+π0, and O16(nn)→O14π0π0 are investigated. No significant excess in the Super-Kamiokande data has been found, so a lower limit on the lifetime of the process per oxygen nucleus is determined. These limits are τpp→π+π+>7.22×1031 years, τpn→π+π0>1.70×1032 years, and τnn→π0π0>4.04×1032 years. The lower limits on each mode are about 2 orders of magnitude better than previous limits from searches for dinucleon decay in iron
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Google Scholar:J. Gustafson
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Labarga Echeverría, Luis Alfonso
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P. Fernandez
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Super-Kamiokande Collaboration
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