Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Softly shifting away from dark matter direct detection   We propose soft breaking mechanism for dark matter (DM) shift symmetry in a
class of composite dark matter models, where both DM and the Higgs boson arise
as pseudo Nambu-Goldstone bosons from novel strong dynamics. Our mechanism is
utilized to suppress the non-derivative portal coupling between the Higgs boson
and DM particle, which can evade the stringent bound of current DM direct
detection experiments. Otherwise this non-derivative portal coupling would
naturally be at the same order of the Higgs quartic, rendering this class of
models under severe crisis. For realizing soft breaking mechanism, we introduce
vector-like top partners, dubbed as "softons", to restore the shift symmetry of
DM in top Yukawa sector, which however is only broken by the softon masses. The
portal coupling would automatically vanish as the shift-symmetry-breaking
softon masses approach zero. Specifically we present a proof-of-concept model
of soft breaking, based on the coset $O(6)/O(5)$ and the simplest fermion
embedding, and study its DM phenomenology, where we show a large amount of
novel parameter space is opened up by using the soft breaking mechanism.

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The categories of this paper are: q-alg
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The categories of this paper are: chem-ph
37
The categories of this paper are: supr-con
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The categories of this paper are: cmp-lg
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The categories of this paper are: q-fin
16
The categories of this paper are: stat
5
The categories of this paper are: gr-qc
4
The categories of this paper are: cond-mat
10
The categories of this paper are: q-bio
33
The categories of this paper are: plasm-ph
26
The categories of this paper are: bayes-an
21
The categories of this paper are: adap-org
31
The categories of this paper are: ao-sci
14
The categories of this paper are: math-ph
3
The categories of this paper are: physics
11
The categories of this paper are: hep-lat