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Doctoral Thesis
DOI
10.11606/T.43.1993.tde-13072012-150242
Document
Author
Full name
Ivone Freire da Mota e Albuquerque
E-mail
Institute/School/College
Knowledge Area
Date of Defense
Published
São Paulo, 1993
Supervisor
Committee
Escobar, Carlos Ourivio (President)
Anjos, Joao Carlos dos
Crema, Edilson
Luksys, Miguel
Nemes, Maria Carolina
Title in Portuguese
Novo limite superior para asa razão de decaimento radiativo
Keywords in Portuguese
Decaimento radiativo
Física de partículas elementares
Hiperon
Razão de ramificação
Abstract in Portuguese
Nessa tese procuramos o decaimento radioativo raro - -. É um dos resultados da experiência E761 realizada no Proton Center do Fermilab, usando o feixe de híperons carregados com momento de 377 GeV/c. Medimos a fração deste feixe que é constituída de -, sendo esta (3,9 ±0,3)X10-5. Não encontramos sinal do decaimento radiativo - - e determinamos um novo limite superior de 7,5X 10-4 (90% CL).
Title in English
New upper limit for right wing of radioactive decay.
Keywords in English
Branching ratio
Elementary particle physics
Hiperon
Radiative decay.
Abstract in English
In this thesis we have searched for the rare hyperon radiative decay - -. It is one of the results of E761 experiment which was realized at Fermilab Proton Center using a 377 GevIc charged hyperon beam. We measure the - beam fraction, which is (3.9 ± 0.3)x10-5 at the start of the decay region. No signal for the radiative decay was found and we determine a new upper limit of 7.5 x 10-4 at 90% CL for the - - branching ratio.
 
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45259Albuquerque.pdf (3.41 Mbytes)
Publishing Date
2012-07-13
 
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