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Laboratory Search for a Long-Range<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:mi>T</mml:mi></mml:math>-Odd,<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:mi>P</mml:mi></mml:math>-Odd Interaction from Axionlike Particles Using Dual-Species Nuclear Magnetic Resonance with Polarized<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:mmultiscripts><mml:mi>Xe</mml:mi><mml:mprescripts /><mml:none /><mml:mn>…
Various theories beyond the standard model predict new particles with masses in the sub-eV range with very weak couplings to ordinary matter. A new $P$-odd and $T$-odd interaction between polarized and unpolarized nucleons proportional to $\stackrel{\ensuremath{\rightarrow}}{K}\ifmmode\cdot\else\textperiodcentered\fi{}\stackrel{\ensuremath{\rightarrow}}{r}$ is one such possibility, where $\stackrel{\ensuremath{\rightarrow}}{r}$ is the distance between the nucleons and $\stackrel{\ensuremath{\rightarrow}}{K}$ …