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Yes, perfect. We can see the slides.

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Good, good.

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Well, good afternoon, everyone. It's my
pleasure to be invited and to introduce me

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to my collaborators, recent work on
precision predictions, well for

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differential Higgs alterable, but Norfolk
sound boosted region for the Hicks

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transfers moment and distribution. Okay,
so first I'd like to start with the

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success of our cx experiment. Recent.
Currently we have the metrics property in

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good agreement with the standard model, we
have seen the persone kind of search

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generation for non compliance is each
company measured at precision past minus

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10 to 20%. The Higgs mass has been
measured with unprecedent accuracy at

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premier level. Well the fiducial total car
section as shown on the screen In the

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lower part here, inside plus minus 90%.
What we haven't seen is the secondary

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generation from ionic coupling and the dye
x signal. And we would continue the

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adventure to explore the full potential of
the IOC in terms of going differential in

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both X production decay channels, to a set
new targets for precision, and to look at

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interesting fiducial regions for the
future. Hi, Lumia see face hope. Hopefully

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during this journey, we could accelerate
the searches of new physics. Now let's

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look at the Higgs production for the total
cost. Share DRC. Here's the plot from the

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Higgs rocks cross section working group by
the ranking of the dominant contributions

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start with the global fusion and BBF that
we reach production. Then the force the

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important contributions that are h two
Higgs well the glue will also rank from

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the important Friends there has been Thank
you Bye Oh QC effects included xx leading

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order for the VH and also an X leading
order for the T bar ah all of these

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production channels also accompanied by
the next leading order electroweak

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corrections. Now, when we move from the
inclusive autocrat section to the

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differential one, the current experiment
measurement focus on several differential

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observables for example, Hicks PT
distribution repeats the leading jack PG

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distribution recall from the Higgs or the
N jet multiplicity measurements. So, from

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these measurements, we could see below the
major data point, the region or the white

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region prominent by the gluon fusion
contribution. The shaded area of green or

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the dark shadow area are those coming from
the other Higgs production channels. So,

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if we want to understand the Higgs
property in a good way for the bulk of the

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distribution we first look at the fusion
channel. So currently the experiment I

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write the freshman level is about minus
20% for the series about plus or minus

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10%. In general, we have good agreement
between experiment and the series. Now

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let's look at the Higgs PT distribution
dive into more details for this particular

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observable for the fusion channel. There
are different theory behind the different

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dynamic range for small PG region namely
below 20 gV level we know that the soft

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global emissions power you any
perturbation can see the predictions to

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cause a logarithmic divergence, the
treatment is to use resubmission to

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sum those large divergence to match to fix
the current accuracy. So next next, you

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can order metrics with cube out for the
medium PT region. Namely from 20 to 200,

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gv. This is the region where we could
attest to the yft theory, assuming that

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the energy flow into the top Quark loop,
which connects gluons and the Higgs are

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relatively small compared to the top mass,
such that we could shrink this loop vertex

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into a point like vertex. And the current
procedure is the next next leading order

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correction in the heavy top limit to the
posterior region in terms of bigger than

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200 gV, we know that the energy scale
flowing into the top to open resolving or

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it's comparable or larger than the mess of
the top Quark. So in this region, we have

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to consider the full loop dependence or
namely the Standard Model contribution

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rather than EFT. So this involves the
calculation of the two loop community

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scale diagrams by showing the lower in the
right lower part and the DC A particular

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challenging calculation mathematically for
the Fineman diagrams. Also for the boosted

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region, we would see sharply fully in
statistics, why the dynamical fiducial

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region this is challenging for both
extremes and the theory to have a fair

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estimation of the systematic error on both
sides to make a reasonable comparison and

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this is region also we are very interested
in because the bsm models or bsm signals

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potentially are involved in those large
energy scale in terms of high extra

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generation of quarks are optional effects
from your particles. So now let's focus on

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the boosted the Higgs region. As I
mentioned that we need to include the

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Standard Model top Mass Effect. Now two
ways to look at it. One way is to expand

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the complicated Fineman diagram in the
variables to the region, it a few t I feel

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TV The level or the energy scale is much
larger than the mass of the Higgs or the

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mass of the top. And after the expansion
is approximation, but analytical

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expansion, then we can calculate the
expanded form analytically to have a

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electrical result. Other ways to calculate
it directly the calculation, but it's very

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numerically mathematically challenging
such thoughts only the numerical result is

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currently available, but the numerical
result would suffer from the stability for

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either the high p region in terms of above
one gv level. So, there has been tried

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efforts to combine the two are very high
PG, but still increasing you know wider

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dynamic range the reliability of Siri
prediction. So now beyond the technical

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part of the phenomenology calculation if
we look at the result, the current state

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of the art accuracy is next linear with a
standard model prediction from a global

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future with uncertainty about the past
night 20% of the corresponding

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experimental measurements focused on above
350 gV has an IRA rental statistic for

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about the past minus 50%. But this is not
the full story. Recently, the Higgs cross

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section Working Group deliver a study that
just tried to focus on the posted Higgs

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region and we find that the boosted Higgs
PD distribution is enhanced by the Quark

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PDF such that the VH production channel
dominant over the gluon fusion is above

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1.2 gb level and each of these two
channels contributes about one third to

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the total accumulated across section above
1.2 TV for the th and the V Vf production

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channels are combined to the last one sort
of contribution. So these indicate that to

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to really have a fair estimation for What
is the standard model background in this

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region we need to use the joint efforts
for all the Higgs production channels to

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be taken into account and the to include
that they are state of the art surgery

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procedure.

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Okay, now let's move on to the confusion
channel into more details. Here is a plot

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by this x cross section Working Group.
Note that includes the state of our TFT

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and the state of our standard model
prediction, we can see that either one TV

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level the two predictions are different
our order of magnitude. So this clicker

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means that the EFT is not reliable.
However, if we look at the lower panel of

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the key factor, they are remarkably
similar and nearly flat at large PT. So

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this could lead us to our ideal solution
that we need the next leading order

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standard model accuracy, but we also want
the next next leading order EFT precision

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So, this can be delivered with the
assumption that although right now not

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available, but in the future, the Standard
Model predict predictions also has a flat

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key effect, right the large PT. So right
now, we rescale the next next leading

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order EFT by region factor from the next
leading order Standard Model assess the

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mechanism of the EFT for the central value
of the prediction. So, this is only part

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of the analysis that we also need to have
a fair estimation for the Iraq. This now

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includes the independent scale variation
of this week in terms of this region

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factoring from under the next next, you
know, the yft prediction on TOEFL. On top

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of that we also need to estimate the
missing talk Mass Effect for the next next

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leading with a standard model coefficient.
We can have a fair estimation for this

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effect by looking at while they're lower
what we missed. For the next leading order

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related result compared to the full next
lead in the standard model, use those

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percentage to multiply the next to next
lead to the EFT coefficient have a fair

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estimation for the muscle mass effect. Now
is this treatment, we come to the current

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master prediction for the ggf channel in
terms of the EFT improved one, that's

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actually the order in the distribution
here is showing the magenta color. So with

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this best prediction, we combine the
theory IRA from two sources mentioned

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above in quadrature, and the reach to the
theoretical certainty at plus or minus 10%

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level at our next tax levy or the rebate.
So now, these are very promising progress

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from the state of our calculation, but
those calculations are very complicated

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and the neither a lot of efforts in terms
of computing time Under the setup of the

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code, and they are not publicly available,
so to to make sure that the publicly

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available tools are also give can also
give experimentalists a good estimation.

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We also studied for example, the simple
hack i o and the medical error file using

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similar setup for this boosted region. And
we also match the polygon the middle

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result with PCL six puddle shower to also
include the puddle shower effect. So, the

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results compared with the current best is
quite promising. We see that the mean on

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the Minecraft five result has a central
value in good agreement with the

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corresponding surgical arrow with the
current the best under the current or past

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has about plus 20% correction to the
central value while the uncertainty is

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reduced from plus minus 20% or more to
plus minus 10%. So a reduction of more

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than or roughly about 100% From the theory
perspective, so this is then I mean very

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useful information that you could still
use perhaps me or Minecraft, including the

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Mass Effect optimax linear models with
pattern shower and now to mesh to compare

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to the current events, there are some key
factors you can extract from those

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analysis and to enhance the accuracy of
the standard mode background.

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Okay, so as I mentioned before, this is
only one third of the full picture for the

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future. We also delivered a study for the
vH vpf and the TT Rh contributions also

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including the electronic fractions your
social class or group and here is the

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result for the full combined Higgs
production at high PT in the black curve,

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and with the different production channels
coded in different color and this is an

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Under actually with result I showed before
for the fraction contribution for

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different production channel that the claw
fusions actually get less and less

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important that the VHP kept the dominant
position okay. So, now more quantitative

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analysis for the contribution between
different production channels, we could

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see that the dominant scale or scale
uncertainty is currently still coming from

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the ggf for the current best and from the
TT batch at about the plus or minus 10%

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level, the reach production is getting
more and more important at large PT and

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the corresponding and actually they will
do something about 5% and actually the

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state of art calculation not included
here, but is already available at next

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next leading order indicates a further
reduction of scale has certain down to 2%.

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So, this is actually a question Under a
very good control, interestingly to notice

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that although the vbf scale uncertainty is
the smallest among all the four channels,

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but it's increase gradually from low PT to
high PG are the other channels.

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Theoretical uncertainty is basically the
flat. And on top of this, we also need to

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bear in mind that the electronic
corrections are substantial. We don't have

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the prediction for graph fusion a channel
for the electronic corrections yet, but by

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looking at the dvh production channel for
the electronic correction can be as large

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as minus 30% at a large peaky region above
the TV, so this has to be taken into

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account. And so with all this information
is not aiming for, I'd say this is the

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result you should use but to just remind
us that the new physics effects could

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affect the virus China's differently that
we read. recommand to use simplified

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simplified template cross section to
reconstruct or classify each event to by

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their production channel. And to
understand what's the corresponding

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compensation factor we should use to have
a fair estimation of the standard model.

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Okay, now let me come to my conclusion
that the Higgs boson precision

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measurements focus on differential
observables and the distribution in

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production and the decay channels. The
corresponding predictions focused on

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reducing uncertainties from or sources for
example, fixed order correction actually

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correction potential effect, etc. So the
boosted Higgs is becoming the focus we

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improve both experiment and see reposition
to accelerate the searches for new

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physics. And the Higgs properties is quite
different in the boost integration time

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the bulk of the Higgs production car
section currently the red coin certainties

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under control I took about a 10 to 15%
level for Expedia 400 gV patentee are

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several new sources of cereal and
certainly not included in this quarter. In

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terms of the top master scheme choice,
which is substantial linear order should

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be considerably reduced when we go to
higher order this would affect the top

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mastering the full Standard Model looping
group, or the top mass used in the DFT for

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the Wilson correction. Also, we haven't
included the PDF and the company

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uncertainty in the 10 to 15% quarter, but
we believe it can be systematically

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improved in the future from the efforts of
the PDF group are fitting with more

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precise data from IFC. We could also do a
better job in the future to rescale for

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the mass atomic mass effect in the global
fusion channel event by event rescaling

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manual right now is a histogram level. And
we also plan to upgrade the VH and the BB

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if predictions to include the next time
leading order items you buy state of the

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art accuracy to have more control of the
answer today, especially for the VH

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production channel. Thank you.

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Thank you very much. It was very
interesting. We're a bit over time. So

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let's take questions from the audience.

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Giovanni please. Yeah, I was wondering So,
the uncertainties here, this finger is

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00:17:39,270 --> 00:17:48,690
essentially for to Sydney and then we
should and we expect to the the to show

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00:17:48,690 --> 00:17:58,230
that somehow the also the electroweak part
or on you know, if this is the case so you

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00:17:58,230 --> 00:18:04,170
know, when we could also improve these
estimates to add those to the estimate of

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00:18:04,170 --> 00:18:05,010
the electroweak

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00:18:05,969 --> 00:18:17,579
Yeah. So, yeah, so this 10 to 15% quota,
it's basically this table combining okay.

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00:18:17,609 --> 00:18:23,219
So in this highlighted region combining
those uncertainties together for

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00:18:23,279 --> 00:18:29,009
estimation in quadrature for fair
estimation, but these are mainly from the

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00:18:29,039 --> 00:18:35,549
QC the corrections the scale variation,
the missing high water effects beyond the

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00:18:35,819 --> 00:18:45,299
current nominated fixed older, yeah. So,
this part, we we were kind of assuming

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00:18:45,299 --> 00:18:49,859
that the was the dominant uncertainty
level is still kind of quite important

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00:18:49,919 --> 00:18:55,829
from the confusion channel and the
electronic corrections that the we have to

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00:18:55,829 --> 00:19:00,929
include a correction for sure, but the
corresponding uncertainty mean we need to

197
00:19:00,929 --> 00:19:06,749
add this minus 30% to the VH channel? No
too little for the central value, but the

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00:19:06,929 --> 00:19:11,759
response theoretical error is not as
significant as the QC dx certainly here.

199
00:19:11,909 --> 00:19:19,019
So there are like so it's kind of the, say
the the systematic theory error due to the

200
00:19:19,049 --> 00:19:24,059
components we forgot to include. That's
one big correction. The other one is once

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00:19:24,059 --> 00:19:30,059
we include everything, because of the
fundamental problem of quantum field

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00:19:30,059 --> 00:19:35,369
theory in the perturbation theory, still
some level of uncertainty here we will not

203
00:19:35,369 --> 00:19:40,919
be able to go beyond and that's that's
kind of the bottleneck part not have to

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00:19:40,919 --> 00:19:46,199
rely on the higher order corrections or
more detailed resubmission study. These

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00:19:46,199 --> 00:19:51,929
are the kind of the quoted error I have
here for the 10 to 15%.

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00:19:55,470 --> 00:20:01,410
Thank you, my friend, we need to move on
quite quickly so let's

207
00:20:02,939 --> 00:20:05,039
let's thank axon again and let's