Hear Me?
Yes please start when you're ready.
Okay, so this is morning from central China and Memorial University on behalf on
CB collaboration. Next I will give an introduction about the measurements and
the prospects on electronic physics from RCB experiment.
I'm mainly and I can't see your slides anymore I don't know whether the other
convenience also have this problem. Yes, maybe your day somehow disappeared when
you went to full screen.
Now I can see them okay.
So at first I will do a introduction but our detectors. Our detector is single arm
forward spectrometer power ratings are very unique acceptance in the forward
regions, and the design for the 30s of the protocols continues to be undersea cracks,
and the RCP Taurus creates instability in the electroweak physics and the tracks
Because our CV is the only filter as an RC with the precision tracking coverage in
the forward region and it has excellent momentum resolution, high new either the
efficiency and the how or good performance of the electronic reconstruction. And our
CB detector has a silent or texted reconstruction which can help tag B and C
guides your to the unique four regions that are CB car size, new kinematic range
to offer complimentary speak range with respect to authorize and CMS for
electronic measurements. And they could also allow sensitivity to PDF items high
values and low x values which is explored by other experiments are to be performed
some measurements of the atomic physics in the recent three years into cells In the
16th RCB data the total and differential cross section measurements of the W and z
production in associations with jazz use in 2010. data at at a measurement of
vector both on production in associations with the drugs in the forward regions is
important to test the PDF and provide constraints on the test to the same model
and provide the constituents on the PDFs, the W and the Z both on the identifiers to
the Wk to new and the cDk to new new key channels for the leptons or procedural
rapidity greater should be greater than two to 4.5 on the transverse momentum
greater than 20. Under the fiducial criteria required at least one jet will
transfer some momentum which then 20 T and the procedure liquidity in the range 2.2
to 4.2. The jet is also required to be separated by radius of 0.5 from the travel
leptons produce the in the authenticate the contributions to the sector the wi the
jet samples are shown in the left of clouds, the yard is determined by fittings
on new solutions the distribution securities is about 46% or purity of the Z
at the Jet sample is determined to be aborted 98% It is very hard. So, total
cross section for W jet and the jet production option the by summary or the
measures core section in terms of jet eater. The wt ratios and the W plus W men
are symmetries are also determined. The measurements are in good agreements with
the theory predictions as the red plot shows. x a measurement of the production
cross section of z bosons. As a society it's pretty intense using the demo and the
electron final state. So, luminosity is interesting ISIS is about 300 people or
more speakers. So cross section is a measure of the four leptons within this
fiducial range. The inclusive the Busan core sections for the case to the moon is
about 200 people or two electrons that is about 100 netic force taking the
luminosity to the forecourt imitates this two measurements are considered consistent
at the level of one on one sigma and alene are combined to get this result. As the
second plot shows the integrated cross section for both time you're anti
electrons and estates in the fiduciary acceptance as a function of the tables on
rapidity. On compared to the theory predictions, the differential cross
section as a function of the transverse momentum normalized the total total core
sections are shown in the red plots. Just says medical ascertains can be a marker a
console console when these distributions are Our eyes and the nose significance
declarations are sitting between the data and standard model.
For the W boson production, I submitted a measurement of the core section for W
decay to a new using the data corresponding to integrated the luminosity
of tumors Finbar to Z, the electrons are required to have more than 20 gV off the
transverse momentum and in this pseudo repetitive range, after all sections the
purity is about 60%. The transverse momentum distributions of the 42 side with
the result of the fades or light as the top right shows the signal years are
determined by frequency the electron transverse momentum distribution after all
correction corrections that acts as an efficiency, the differential w plus and
the W manners cross section in beans of eater at the The bottom left shows the
bottom panel panel displays a series of predictions divided by the measure of the
core section, it could be seen that the result is compatible with predictions and
the interest analysis the production of W bosons has also been started in the mutual
fund estates. The ratio of branching friction for the electron and the mutual
fund estates determined for w w plus and the documentary is compared to a Hadron
Collider. And the library is the theory expectations either reprise into by the
way the line could be seen by it's the ratio of bronchial fraction has the
precision that exists the opposite termination of the Hadron Collider as well
as measurements made as the law. This is the latest electronic physics result in
your CV set of forward theta K to total production at t Corresponding to an
integrated element of tombs Finbar, the reconstruction of top hair candidates is
performed in both electronic and the hydronic decay model, most of the top Tom
requiring at least one atonic model for the top hair. This at least one laptop or
electronic remote for the top here combinations lists of matter the key
channels of tatango put in to four channels in digital assets, only charged
final state particle marks in rattle on our use of the photo reconstruction. The
backgrounds to the K total are mainly from the city and the W. The GS are SMEs with
data data driven methods. The environment domestic environment meant mass
distribution for candidates which is the exclude the maximum rings indicated by
gray hair. So, cross section the results compared with the program state k tomeo
and the E measurements inside the same satin region at 30 entity as color shows
the predictions from the theory models the combined cross section is about 96 people
or earlier the uncertainties our statistical system that says method called
your to the RC beam and agrees as the details and to the integrated luminosity
uncertainties respectively. This result is compatible with the next method in the
understand model predictions and the ratio of the core section for the 8k to how to
deduct who knew and he are determined to be one which is consistent with laptop
University. University universities hypothesize you The case
okay the summary priority to finish next move to the prospector of some electron
physics in a third CB, the Ric mixing angle is k parameters in the Standard
Model our CB can make our competitive measurements of the mid mixing angle in
the air, because the forward backward or symmetries increase as repetitive of the
balls and increase them and the dilution effects, which means the possibility of
wrong directions determination could be decreased in high iterations as the
laughter plot shows, which means that the course bondings systematical uncertainties
is expected to be smaller in RCB. The second plot shows the relative trend in
the forward backward symmetry is integrated over the for RCB acceptance
from a shift in effective laptop. Electronic makes angle also showing up
I'll plot out a PDF acetates on the forward backward century, the different to
demo environments, mastery interest being more sensitivity to PDF variations and
others being most of the activity to variations in the effective electronic
mixing angle. So mixing so mixing angle angles has been measured with our CB
detector using the Raman data multiple other shows or comparisons of the way we
can mix the angle or it's out from the different experiments to actually be
result of course we always work our way outrage and is one of the most the purse
size measurement from the heart on clatters.
Five minutes ago just to let you know,
okay, expanded acetate with the most 36 are surely enough to pull out the
stratasys acetate is is expected to be very small environment all under you drawn
to Office metal consultants are statistic limited. So, with the increase of the
statistics, the systematical uncertainties it also could be decreased. And with
enough data to PDF root cause uncertainties could be reduced to very
small buildings are waiting. This means that with a good control of other sources
of uncertainties or measurement to actually be using the full data set about
300 inverse images from the bars can be significant and more precise that so the
combinations of the measurements are Atala upon SRV and as on the corresponding to
the latest that are see yellow report as the red brother shows RCB has come has
kindly come up with a Muslim very comic, very process measurement of the mixing
angles. Another important measurement to electronic physics is W mathematics. So
electronically cafe two predicts the Ws with only a certain amino acid that is
bad. So the best individuals measurements now have uncertainties all about 20 years.
And the plot shows the Mian transfers and distributions peaks at off. Okay.
Okay, sorry.
So yeah, so Okay, I think I had skipped last eyes
run to an ISIS is imprecise that makes me Ganga is measured by using the full
angular distribution of the balls on the case, because it contains more information
and forward back or symmetry. And the angular core efficiencies measurements is
also ongoing. So a four is relative to the weakness in Angular and the reason for it,
we help with the process of understanding of how to capture additional alignment is
to perform offline but this additional elements 35% improvement In the masculine
resolution could be observed at the Red Cross shows. Another important measurement
in electronic physics is W mass measurement. Yeah. Now, but now the best
experimental stuff is about only certain. And the plot shows the VR transfers and
momentum distributions peaks at this position but the distributions is a
stronger influence vacuity promontory is the W transverse momentum shape, the
details, which has the lumbee considered as a source of activity as a measurement
data loss on the same as the W mass measurement. ercp is ongoing for this
measurement and CB has some advantages. The first is to be permanent about to me
with statistical precision, you don't want to data the secondary the pattern
distribution function, as it is with a partially console in our age of FCB with
our PDF activities can be tightly constrained with a fade to the About
crucial distribution interest versus momentum and data, it is possible Is it
possible to simultaneous constituents and W transfer some shape and the faith Why is
so mitigated acuity absentees? Okay? So family or short summary actually perform
the measurements of the actual rake in the forward region of pivotal agents are
explored by other experiments, that unit surplus or CB could provide some unique
test of the stand model and the consequence to the PDFs, a lot of work
that I put aside for new executive management. That's all thank you.
Thank you very much for the interesting and insightful talk. We have time for some
questions, so please raise your hands if you if you have them.
Hi, Alexa, do go ahead.
Yeah, could you give a bit more details about the key weighting techniques to
register PDF print certainties
are the sons creditor, please?
You mean that? Yes. Okay.
So
I think I think early on can give me your help about introduction of religions
technic,
I mean only if you want me to I can say a few words here.
The
so the solid black line is the PDF uncertainty from current knowledge. So
that's all measurements to date. And here's what you get if you just do that in
PDF 3.1. And that comes in at around 20 times 10 to the minus five. But of course,
we know that you can look at the data itself and ask which of the PDFs which are
the PDF replicas in this case and then PDF, agree best and you can look at the
chi squared. And you can do this chi squared weighting, which is of course very
similar to what has been done by Atlas and CMS with their on one measurements. And
you can apply this and with this, you get the open circle lines. And so you see that
eventually with 300 inverse empty bomb, which is the target of HCP with the
proposed HCP upgrade to the uncertainty is below 10 times 10 to the minus five, just
using this free waiting. Now this is only using statistical uncertainties within the
study for the high lineal hc. So if there were systematics those would obviously
also need to be included the politicals one of the key points is that going
forward hcb you start with a PDF uncertainty that is relatively small in
comparison to the what you might see in the central region. Because of that, This
dilution factor is less of a penalty. And so the actual work that's done by this re
weighting in reducing the uncertainty is is is smaller at HCV as well.
Okay, thanks average. If I may ask your question actually asked the same question
right. So what is the like 12 right, what is the timeline? Or is there a timeline
for an interdimensional? I mean all these all these generated studies in fantastical
of them
so
yeah, that's like 12 you talk about the battery mass measurements and
I mean, these these studies have shown in the past regenerate studies have shown in
the past, there has been a massive benefit of
pre commitment
And just wondering if there's a there's a timeline for that.
Coming from CMS, I wonder if there's gonna be first
and second serve.
mainland. Do you want to comment on that? Or do you want me to? Okay.
Yeah, so the studies are ongoing. I think it's similar to what you said your
yourself that I think putting a time timescale on it now is I don't want to be
held to an optimistic timescale. But the studies are ongoing. We are actively
working on it. Okay.
This CD are good enough. Can I also ask the question
on slide 11.
You see here the full length or distribution of this ebook And contains
more information than the forward backward symmetry. The long did this the case but
which coefficient says are you about to measure?
You mean the Angular CLI finances? We also use it to take care of
Yeah, I mean, how many efficiencies Are you going to measure like first flow for
you until now we just calculated is zero to a four by two we can also measures a
zero to a seven Yeah.
Thank you.