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- W2804768907 abstract "Coupling between Standard Model particles and theoretically well-motivated ultralight dark matter (UDM) candidates can lead to time variation of fundamental constants including the proton-to-electron mass ratio $muequiv m_{p}/m_{e}approx1836$. The presence of nearly-degenerate vibrational energy levels of different character in polyatomic molecules can result in significantly enhanced relative energy shifts in molecular spectra originating from $partial_{t}mu$, relaxing experimental complexity required for high-sensitivity measurements. We analyze the amplification of UDM effects in the spectrum of laser-cooled strontium monohydroxide (SrOH). SrOH is the first and, so far, the only polyatomic molecule to be directly laser cooled to sub-millikelvin temperatures, opening the possibility of long experimental coherence times. Because of the high enhancement factors ($left|Q_{mu}right|approx10^{3}$), measurements of the $tilde{X}left(200right)leftrightarrowtilde{X}left(03^{1}0right)$ rovibrational transitions of SrOH in the microwave regime can result in $sim10^{-17}$ fractional uncertainty in $deltamu/mu$ with one day of integration. Furthermore, ultracold SrOH provides a promising platform for suppressing systematic errors. More complex SrOR radicals with additional vibrational modes arising from larger ligands R could lead to even greater enhancement factors." @default.
- W2804768907 created "2018-06-01" @default.
- W2804768907 creator A5070801195 @default.
- W2804768907 creator A5076418359 @default.
- W2804768907 creator A5089918976 @default.
- W2804768907 date "2021-04-08" @default.
- W2804768907 modified "2023-09-24" @default.
- W2804768907 title "Enhanced sensitivity to ultralight bosonic dark matter in the spectra of the linear radical SrOH" @default.
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