Physics – High Energy Physics – High Energy Physics - Phenomenology
Scientific paper
2005-10-12
Physics
High Energy Physics
High Energy Physics - Phenomenology
12 pages, 1 eps figure
Scientific paper
In the present paper influence of tensor electric and magnetic polarizabilities on spin evolution in the resonance deuteron EDM experiment is considered in details. It is shown that besides EDM the electric and magnetic polarizabilities also contribute to the vertical spin component P_3. Moreover, the electric polarizability contributes to the P_3 component even when the deuteron EDM is supposed to be zero and thereby the electric polarizability can imitate the EDM contribution. It is shown that unlike the vertical component of the spin P_3 the component P_{33} of polarization tensor does not contain contribution from the electric polarizability, whereas contribution from the magnetic polarizability reveals only when the deuteron EDM differs from zero. Moreover, it is also shown that when the angle $\vartheta$ between the spin direction and the vertical axis meets the condition $\sin \vartheta=\sqrt{{2/3}}$ ($\cos \vartheta=\sqrt{{1/3}}$), the initial value of $P_{33}$ appears $P_{33}(0)=0$. As a result, EDM contribution to the measured signal linearly growth in time starting from zero that is important for measurements. Therefore, measurement of the P_{33} component of deuteron tensor polarization seems to be of particular interest, especially because the nonzero component P_{33} appearance on its own indicates the EDM presence (in contrast to the P_3 component, which appearance can be aroused by the tensor electric polarizability, rather than EDM).
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