Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: An Altarelli Cocktail for the MiniBooNE Anomaly?   We critically examine a number of theoretical uncertainties affecting the
MiniBooNE short-baseline neutrino oscillation experiment in an attempt to
better understand the observed excess of electron-like events. We re-examine
the impact of fake charged current quasi-elastic (CCQE) events, the background
due to neutral current $\pi^0$ production, and the single-photon background.
For all processes, we compare the predictions of different event generators
(GENIE, GiBUU, NUANCE, and NuWro) and, for GENIE, of different tunes. Where
MiniBooNE uses data-driven background predictions, we discuss the uncertainties
affecting the relation between the signal sample and the control sample. In the
case of the single-photon background, we emphasize the large uncertainties in
the radiative branching ratios of heavy hadronic resonances. We find that not
even a combination of uncertainties in different channels adding up unfavorably
(an "Altarelli cocktail") appears to be sufficient to resolve the MiniBooNE
anomaly. Varying the radiative branching ratios of the $\Delta(1232)$ and
$N(1440)$ resonances by $\pm 2\sigma$, however, reduces its significance from
$4\sigma$ to less than $3\sigma$. We finally investigate how modified
background predictions affect the fit of a 3+1 sterile neutrino scenario. We
carefully account for full four-flavor oscillations not only in the signal, but
also in the background and control samples. We emphasize that because of the
strong correlation between MiniBooNE's $\nu_e$ and $\nu_\mu$ samples, a sterile
neutrino mixing only with $\nu_\mu$ is sufficient to explain the anomaly, even
though the well-known tension with external constraints on $\nu_\mu$
disappearance persists.

21
The categories of this paper are: adap-org
24
The categories of this paper are: dg-ga
26
The categories of this paper are: bayes-an
22
The categories of this paper are: chao-dyn
15
The categories of this paper are: nucl-ex
33
The categories of this paper are: plasm-ph
12
The categories of this paper are: nucl-th
1
The categories of this paper are: cs
11
The categories of this paper are: hep-lat
3
The categories of this paper are: physics
23
The categories of this paper are: solv-int
4
The categories of this paper are: cond-mat
34
The categories of this paper are: chem-ph
30
The categories of this paper are: q-alg
25
The categories of this paper are: patt-sol
32
The categories of this paper are: atom-ph