Closed Radonirinaunimi closed 2 years ago
Results below were generated using 1d40aa7:
Thanks @Radonirinaunimi , the kinematic plot looks super nice! Maybe we can use log scale also for x axis? Clearly we have quite a bit of data points for low-Q, so we can count on a reliable extrapolation.
Question: do we impose right now any cut in W? If we want to restrict ourselves to inelastic scattering and avoid the resonance region we have to impose W > 1.8 GeV or what is equivalent W^2 > 3.25 GeV^2. How does the kin plot change with this restriction?
Thanks @Radonirinaunimi , the kinematic plot looks super nice! Maybe we can use log scale also for x axis? Clearly we have quite a bit of data points for low-Q, so we can count on a reliable extrapolation.
Yes, we do indeed have quite some points in the low-$Q^2$, so this is good news. Below is the plot with log scale in the $x$ axis.
Question: do we impose right now any cut in W? If we want to restrict ourselves to inelastic scattering and avoid the resonance region we have to impose W > 1.8 GeV or what is equivalent W^2 > 3.25 GeV^2. How does the kin plot change with this restriction?
For the time being we do not impose a cut on $W$, but we indeed definitely should. We will implement this cut and will post here the updated kinematic plot.
Ah @Radonirinaunimi, you can also select cuts directly from the CLI, there is also the help to show how :)
(not yet on W, just for x
and Q2
for the time being, but in order to cut on W we only need to compute it)
Ah @Radonirinaunimi, you can also select cuts directly from the CLI, there is also the help to show how :)
But this is only for $(x, Q^2)$.
(not yet on W, just for x and Q2 for the time being, but the in order to cut on W we only need to compute it)
Ah, yes! You mentioned it already :)
Here are the kinematic plots (#23, 84d131f) with a $W$ cut ($W^2 \geq 3.5~\mathrm{GeV}^2$):
As you can see, the cut cuts off a few of the low-$Q^2$ datapoints from the BEBCWA59
experiment.
@Radonirinaunimi if it is not too difficult, it would be interesting to plot a line in this space, corresponding to the $W^2$ cut, i.e. the function:
$$ Q^2{min}(x; W^2{cut}) $$
Just for visualization.
@Radonirinaunimi if it is not too difficult, it would be interesting to plot a line in this space, corresponding to the W2 cut, i.e. the function:
Qmin2(x;Wcut2)
Just for visualization.
This is very interesting indeed and actually is already available: https://github.com/NNPDF/nnusf/blob/b3c9becd64923db9db846286365928b9aed45e0f/src/nnusf/plot/kinematics.py#L62-L66
For the time being, the $W^2_{\rm cut}$ is hard-coded to some value, I will modify it such that we can have it as an input argument.
For the time being, $W^2_{\rm cut}$ is hard-coded to some value, I will modify it such that we can have it as an input argument.
Good, the easiest upgrade you can do is to turn wcut
from a boolean to a number, this way:
def plot(
groups: dict[str, list[list[float]]],
wcut: Optional[float] = None,
xlog: bool = True,
ylog: bool = True,
) -> matplotlib.figure.Figure:
(Optional
you find inside typing
module). And of course checking for it accordingly:
if wcut is not None:
min_value, max_value = ax.get_xlim()
xvalue = np.arange(min_value, max_value, 5e-2)
fq2 = lambda x: x * (wcut - 0.95) / (1 - x)
ax.plot(xvalue, fq2(xvalue), ls="dashed", lw=2)
Given that we are more or less ready to run a full fit with our machine learning framework, it would be good to collect here various plots: data vs Yadism (in order to make sure that the coefficients are correct), kinematics, covariance matrices, etc.