O problema na medida da massa do próton no contexto de dimensões extras

Abstract

In a recent experiment to measure the mass of the proton, it was obtained a value three times more accurate than the value recommended by CODATA. However, the values are incompatible, with the difference between them being three times greater than the standard deviation of the most recent measure. This difference has no explanation in the standard physics. In this work, we investigate the discrepancy between these two values of proton mass in the context of the extra dimensional theories. With this goal, we did a brief review of the Kaluza-Klein theory and the ADD model of extra dimensions, proposed by Arkani-Hamed, Dimopoulos and Dvali and study the modifications on the gravitational potential caused by the existence of additional dimensions. We also discuss the effects of the extra dimensions on the spectroscopy of atomic systems. We then describe the experiments that measure the mass of the particles through Penning’s trap and discuss the possibility that corrections of gravitational potential energy associated with extra dimensions provide a better understanding for the proton mass problem.