analistica/slides/sections/1.md

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# Goal
## Goal
- Generate a sample $L$ of points from a Landau PDF
- Generate a sample $M$ of points from a Moyal PDF
. . .
- Implement a bunch of statistical tests
. . .
- Check if they work:
- the sample $L$ truly comes from a Landau PDF
- the sample $M$ does not come from a Landau PDF
## Why?
The Landau and Moyal PDFs are really similar. Historically, the latter was
utilized in the approximation of the former.
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![](images/moyal-photo.jpg){height=130pt}
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![](images/mondau-photo.jpg){height=130pt}
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![](images/landau-photo.jpg){height=130pt}
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## Two similar distributions
:::: {.columns}
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Landau PDF
$$
L(x) = \frac{1}{\pi} \int \limits_{0}^{+ \infty}
dt \, e^{-t \ln(t) -xt} \sin (\pi t)
$$
:::
::: {.column width=50%}
Moyal PDF
$$
M(x) = \frac{1}{\sqrt{2 \pi}} \exp \left[ - \frac{1}{2}
\left( x + e^{- x} \right) \right]
$$
:::
::::
\vspace{10pt}
:::: {.columns}
::: {.column width=50%}
![](images/landau-pdf.pdf)
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![](images/moyal-pdf.pdf)
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::::
## Two similar distributions
![](images/both-pdf.pdf)
## Statistical tests
. . .
- Parameters comparison:
- compatibility between expected and observed PDF parameters
. . .
- Kolmogorov - Smirnov:
- compatibility between expected and observed CDF
. . .
- Trapani test:
- compatibiity between expected and observed mean