Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Enhanced Yield from a Cryogenic Buffer Gas Beam Source via Excited State
  Chemistry   We use narrow-band laser excitation of Yb to substantially enhance the
brightness of a cold beam of YbOH, a polyatomic molecule with high sensitivity
to physics beyond the Standard Model (BSM). By exciting atomic Yb to the
metastable $^3$P$_1$ state in a cryogenic environment, we significantly
increase the chemical reaction cross-section for collisions of Yb with
reactants. We characterize the dependence of the enhancement on the properties
of the laser light, and study the final state distribution of the YbOH
products. The resulting bright, cold YbOH beam can be used to increase the
statistical sensitivity in searches for new physics utilizing YbOH, such as
electron electric dipole moment (eEDM) and nuclear magnetic quadrupole moment
(NMQM) experiments. We also perform new quantum chemical calculations that
confirm the enhanced reactivity observed in our experiment. Additionally, our
calculations compare reaction pathways of Yb($^3$P) with the reactants H$_2$O
and H$_2$O$_2$. More generally, our work presents a broad approach for
improving experiments that use cryogenic molecular beams for laser cooling and
precision measurement searches of BSM physics.

19
The categories of this paper are: eess
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The categories of this paper are: solv-int
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The categories of this paper are: econ
24
The categories of this paper are: dg-ga
5
The categories of this paper are: gr-qc
30
The categories of this paper are: q-alg
14
The categories of this paper are: math-ph
0
The categories of this paper are: hep-ph
36
The categories of this paper are: cmp-lg
28
The categories of this paper are: alg-geom
37
The categories of this paper are: supr-con
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The categories of this paper are: q-fin
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The categories of this paper are: atom-ph
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The categories of this paper are: astro-ph
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The categories of this paper are: cs
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The categories of this paper are: funct-an