2,612 research outputs found
TaO, a Candidate Molecular Ion in Search of Physics Beyond the Standard Model
The TaO molecular ion is proposed as a candidate system for detecting
signatures of charge parity () violating physics beyond the
standard model of elementary particles. The electron electric dipole moment
(EDM) effective electric field , the nucleon-electron scalar-pseudoscalar (ne-SPS) interaction
constant [kHz] and the nuclear magnetic quadrupole interaction
constant [] are
found to be sizeable -odd enhancements. The ratio of the leptonic
and semi-leptonic enhancements differs strongly from the one for the ThO system
which may provide improved limits on the electron EDM, , and the SPS
coupling constant, . TaO is found to have a electronic
ground state like the previously proposed ThF molecular ion, but an order
of magnitude smaller parallel G-tensor component which makes it less vulnerable
to systematic errors in experiment.Comment: 9 pages, 1 figur
The EOS data and information system
An overview of the approximate instrument data requirements is presented in tabular form. The function of data compression is briefly explained
Fourier expansions of Kac-Moody Eisenstein series and degenerate Whittaker vectors
Motivated by string theory scattering amplitudes that are invariant under a
discrete U-duality, we study Fourier coefficients of Eisenstein series on
Kac-Moody groups. In particular, we analyse the Eisenstein series on ,
and corresponding to certain degenerate principal
series at the values s=3/2 and s=5/2 that were studied in 1204.3043. We show
that these Eisenstein series have very simple Fourier coefficients as expected
for their role as supersymmetric contributions to the higher derivative
couplings and coming from 1/2-BPS and 1/4-BPS
instantons, respectively. This suggests that there exist minimal and
next-to-minimal unipotent automorphic representations of the associated
Kac-Moody groups to which these special Eisenstein series are attached. We also
provide complete explicit expressions for degenerate Whittaker vectors of
minimal Eisenstein series on , and that have not
appeared in the literature before.Comment: 62 pages. Journal versio
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