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Novo limite superior para asa razão de decaimento radiativo / New upper limit for right wing of radioactive decay.Ivone Freire da Mota e Albuquerque 03 December 1993 (has links)
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). / 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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Novo limite superior para asa razão de decaimento radiativo / New upper limit for right wing of radioactive decay.Albuquerque, Ivone Freire da Mota e 03 December 1993 (has links)
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). / 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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