Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Interactions of Unparticles with Standard Model Particles   We study interactions of unparticles ${\cal {U}}$ of dimension $d_{\cal {U}}$
due to Georgi with Standard Model (SM) fields through effective operators. The
unparticles describe the low energy physics of a non-trivial scale invariant
sector. Since unparticles come from beyond the SM physics, it is plausible that
they transform as a singlet under the SM gauge group. This helps tremendously
in limiting possible interactions. We analyze interactions of scalar ${\cal
{U}}$, vector ${\cal {U}}$$^\mu$ and spinor ${\cal {U}}$$^s$ unparticles with
SM fields and derivatives up to dimension four. Using these operators, we
discuss different features of producing unparticles at $e^+ e^-$ collider and
other phenomenologies. It is possible to distinguish different unparticles
produced at $e^+e^-$ collider by looking at various distributions of production
cross sections.

22
The categories of this paper are: chao-dyn
33
The categories of this paper are: plasm-ph
15
The categories of this paper are: nucl-ex
10
The categories of this paper are: q-bio
14
The categories of this paper are: math-ph
17
The categories of this paper are: q-fin
1
The categories of this paper are: cs
28
The categories of this paper are: alg-geom
36
The categories of this paper are: cmp-lg
5
The categories of this paper are: gr-qc
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The categories of this paper are: dg-ga
21
The categories of this paper are: adap-org
3
The categories of this paper are: physics
12
The categories of this paper are: nucl-th
8
The categories of this paper are: hep-ex
37
The categories of this paper are: supr-con