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AbstractAbstract
[en] An expression for the mass splitting of particles belonging to the same spin multiplet defined in a space-time of general relativity is derived. The geometrical symmetry is a subgroup of SO(r,s), 9 >=r > 3, 5 >=s >=1, the mass operator being proportional to the second order Casimir operator of that subgroup. A brief analysis of the calculated values as compared to the experimental data is included. (Author)
[pt]
Deriva-se uma expressao para o desdobramento de massa de particulas pertencentes ao mesmo multipleto de spin definido num espaco-tempo da relatividade geral. A simetria geometrica e um sub-grupo de SO(r,s), 9 >=r > 3, 5 >=s >=1, sendo operador de massa proporcional ao operador de Casimir de segunda ordem daquele sub-grupo. Inclue-se uma breve analise dos valores calculados comparados com os dados experimentais. (Autor)Primary Subject
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nd; 20 p
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