Juliette Alimena: Okay.
Juliette Alimena: okay, great. So welcome everyone to the Bsm Fcc meeting today, we have 2 contributions, one from Mina and one from Gail. I don't think we we don't have new slides. Of course the the big thing to concentrate on is the feasibility study.
Juliette Alimena: and having all the contributions in by essentially. Now, the the end of March.
Juliette Alimena: Yeah.
Juliette Alimena: So I think unless there's any questions on any sort of news item, then we can go right into Tamina's talk.
Juliette Alimena: Okay, Mina, would you like to to share your slides?
Meena Meena: Oh, Hi! Yes, yes, I I'll share the slide.
Juliette Alimena: Okay, great. We see them.
Meena Meena: Disclosure.
Meena Meena: Okay, okay, so Hi, everyone. So today I will give.
Meena Meena: today, I will give update on searching for prompt and long live action like particles decaying to our headphones at Fcc electron electron glider.
Meena Meena: So coming to next slide
Meena Meena: so overview of about exam is that Alpa is a potential candidate that can help to understand. Strong Cp problem, dark matter and beyond standard model physics.
Meena Meena: And currently, we are looking, searching for Alp at Fcc, electron positron collider. And we are doing sensitivity. Calculation with luminosity. 1, 25 auto, one inverse at central mass energy 91 Gb.
Meena Meena: And for the available fast simulation Fcc card.
Meena Meena: So in signal process there is gamma plus egg giant in final state where egg giant decayed further into 2 clones.
Meena Meena: So here is the and we consider that branching ratio of exile going to do a dicclone is 100%. And we use Elp linear model.
Meena Meena: And here is the Finland diagram on the left hand side is for signal middle and right. One is for background. That mimic that gives a final state comma plus 2 jets that can mimic the signal.
Meena Meena: So for generation we generated signal and background process using met graph 3.3 2 and using Alp linear model. Then Ptis used for initial State addition, final state radiation, hadronization and Hadron decay. Then, the latest available idea, fast simulation card that is close to cld, it's currently we are using.
Meena Meena: So next slide is about the egg giant story. So here's the interaction of egg giant with particle is gained by the language, and after spontaneous symmetry, breaking
Meena Meena: so before spontaneous matributing, there is also a coupling constant which is cab caw, and C. 5. That represent coupling to sul, 3 BCH. Bozone and hypercharged cage, bozone, and coupling of argent to glown is shown by Cag.
Meena Meena: and after Ssb broke breaking. There is Kappa a gamma gamma, which represent coupling of egg giant to Gamma gamma, and
Meena Meena: kappa a gamma g represent coupling of a joint. O Gamma G,
Meena Meena: so here lambda is new physics scale, and there is relation between before and after. Ssbv, Sb, Ssb, and So
Meena Meena: for the 2 gamma production. There is this relation, and for Ca, Gamma G is the 2 Cos Theta sine Theta caw, minus cab and cos theta, we can calculate from W and G. Mass.
Meena Meena: So for the current linear model Alp linear model. The scan parameter are cag, caw, cab and Exchange mass.
Meena Meena: Coming to next slide
Meena Meena: so to select a benchmark point we consider that that egg joint must stay within tracker volume, and we consider branching ratio of egg joint must be 100%. So area, flight, distance can be calculated using the beta gamma c tau, and which depend only cag and mass of egg joint.
Meena Meena: And so we have to physically constraint on Cag, so that our decay width is no much, much larger than the egg giant mass. So we put a constraint on a ratio of decay. Width over mass of egg giant must be less than 0 point 0 1,
Meena Meena: and after Cag selection we have to select caw and cab
Meena Meena: So one condition is used to avoid a join going to gamma gamma. So we have to make this coupling go to 0 so that we get 100% branching ratio of Xine going to glow and glow.
Meena Meena: So Anna, the second constraint on cacw coming from the total gdk weight that dk, weight of g going to xn plus comma must be within the uncertainty of total gdk width.
Meena Meena: So here is the result on for the Benchmark Point, so
Meena Meena: upper left hand side wrote, represent the flight distance as a function of a joint mass, and Cag coupling.
Meena Meena: and here different curve represent different flight. Distance correspond to 0 point 1 cm, 1 cm and 50 cm. So this give us the lower limit on the upper right hand side plot is showing the ratio of decay, width, or mass of a giant as a function of a joint mass, and Cag, coupling this. Give us the
Meena Meena: upper limit on Cag, then upper limit, on
Meena Meena: or lower limit on Kappa, a gamma G so here bottom plot, cross section is shown as a function of frag, joint mass and Kappa a Gamma G, and we can see that this the blank part is represent the upper limit. So the valid region is just below the color region only. And initially, we can just get idea about
Meena Meena: initially. Ca, Gamma G, so we can see 10 Pico. One cross section is valid for all mass, so we can. We can go even below 10 h, 2 pi, minus 2 G 10 h 2 pi, minus 2 kappa, a gamma G coupling.
Meena Meena: So let's see that in the next slide.
Meena Meena: so for sensitivity, calculation, we generated signal event with Mull each signal event with 1 million event and total background. Events are 20 millions.
Meena Meena: So for sensitivity, or we use, we make selection of comma plus exactly 2 jets.
Meena Meena: And for jet reconstruction algorithm we use exclude you during Kt clustering algorithm with and jet equal to 3. And the final selection on the gamma is gamma required with pt. Greater than 15 gb. Jets are required with pt. Greater than 8 gb. And
Meena Meena: we clean the jets using delta condition between jets and gamma, using delta condition that we are selecting jets only if jets and gamma
Meena Meena: that are misconstructed objects are following the condition greater than 0 point 5, and then to increase the sensitivity further, we implement mass window cut on the digest mass.
Meena Meena: So it's depend on a giant mass. So for mass, less than one Gb, we use 0 point 5 for mass, less than 10 gb, we use for Gb. Mass window cut, and for less than 30 we use 6 Gb. And for greater than 30 gb, we use plus minus 10 Gb, mass window cut.
Meena Meena: and then we normalized the row number event, using the luminosity into close section, divided by total number of event. And if we use the luminosity equal to 1, 25 to one inverse.
Meena Meena: and the formula to calculate sensitivity is signal over ratio of signal over scale, of signal plus background.
Meena Meena: And here, in the table shown for only one benchmark point that is caw 0 point 3, and if we convert into Ca. Gamma G, that's correspond to 0 point 3 3.
Meena Meena: And
Meena Meena: we used new physics scale one TV, and this table is only for 0 point 3 10 and 70 Gb for other mass slides the table are in backup slides on slide 10 and 11.
Meena Meena: So here we can see the selection, efficiency and sensitivity in the last 2 column.
Meena Meena: And yeah, sensitivity is decreasing. If we go to the going to the higher mass.
Meena Meena: Okay, to next slide. So here are jet distribution after gamma plus 2 jet selection on the upper left hand side. This is the number of jet
Meena Meena: number of jet after one comma selection. So we can see peak is only 2, and this is for caw, 0 point 3 and mass for 0 point 3 gb.
Meena Meena: On the right hand side jet mass is shown after selecting gamma plus 2 jets, so we can see clearly. Peak is around 0 point 3 Gb. And bottom one bottom left. One plot is for caw, 0 point 1 gb, and this shows this is for 10 gb, mass, and on the right hand side we see this is for caw equal to 2, and join Mass 70. Gb.
Meena Meena: so as we go higher, the peak is going broad, and other plot for the caw, 0 point 3 for all the masses are in the backup slide on 12 and 13.
Meena Meena: So next is sensitivity or results. Finally. So on the left hand side plot the sensitivity is shown as a function of a joint mass, but for the different flight distance the solar blue represent 1 cm. Dotted orange color, represent 10 cm and green, represent 50 cm, and this is for Caw. 0 point 3,
Meena Meena: and on the right hand side. The sensitivity is shown for C, for all the caw or
Meena Meena: kappa, a gammaji
Meena Meena: for all the mass, and for the different flight, distance or solely dotted, and then again dotted, dotted, represent different flight distance.
Meena Meena: and these so these results are valid for kappa a gamma gamma equal to 0 by considering that Xn going to Gamma gamma 0. And this is also valid. If
Meena Meena: transferring ratio of Lg and going to Gamma, gamma is less than 0 point 1%.
Meena Meena: And because for that we have to cross section must be calculated by taking count Kappa, a Gamma gamma and Kappa a Gamma G, and if for the branching ratio of a giant going to Gamma gamma, less than 0 point 1%, the contribution of gamma
Meena Meena: Kappa, a gamma. Gamma is very small, so we can say they. These result are valid for the both. The condition
Meena Meena: coming to next slide. So here is the summary.
Meena Meena: So we study lp, production of the signal process. Gamma plus egg giant going to Dicloe is analyzed at jeep hold run at Port Fcc.
Meena Meena: So initial fast simulation based sensitivity. Analysis is completed for a broad range of Lp mass and coupling constant. So, but this can there can be further improvement. So there is need detail study, including display, vertex, reconstruction and multivariate analysis
Meena Meena: for better evaluation of Lp parameter space, and also full detector, simulation and incorporation of systematic uncertainty are expected to further refine the results in better way.
Meena Meena: So this is somebody. And
Meena Meena: so here are comments from the Juliet. If
Meena Meena: so, I prepare some answer for that. So if you would like to discuss
Juliette Alimena: Okay, great, thank you. I think maybe if there's time we can come back to to my questions, otherwise feel free to just send me your your answers by email. And we can iterate over email. I think it's not super crucial.
Meena Meena: Me!
Juliette Alimena: Yeah.
Juliette Alimena: so thanks very, very much. I think. You know you've you've made a lot of progress since the last time you you presented in this meeting. So that's very nice to see
Juliette Alimena: questions
Rebeca Gonzalez Suarez: I have a question
Juliette Alimena: Yeah.
Rebeca Gonzalez Suarez: So then, what are the plans there for for publication?
Meena Meena: 4 final paper publication, maybe. We have to further explore the displace vertex implement that displace vertex reconstruction and multivariate analysis
Rebeca Gonzalez Suarez: So you want to do the the final investigation that you just presented now here in the summary
Meena Meena: Yes, we will. You would like to further investigate, or will
Rebeca Gonzalez Suarez: Sounds good.
Rebeca Gonzalez Suarez: Yeah.
Jeremy Andrea: If I may. Just maybe not. The full simulation
Rebeca Gonzalez Suarez: Maybe having
Jeremy Andrea: Probably. Yeah. So
Jeremy Andrea: when is the question? But probably you want to make a 1st paper with fasting and and then and then,
Jeremy Andrea: after make a full simulation analysis.
Rebeca Gonzalez Suarez: No, that makes sense. Thank you.
Juliette Alimena: Wait. Sorry, now I'm a bit confused. You sent me, sent us a version of the paper. I assumed that you wanted to to make that that paper public in the next days.
Juliette Alimena: Nope.
Jeremy Andrea: Depends what we call paper
Juliette Alimena: -
Jeremy Andrea: So in a real publication, in a journal.
Juliette Alimena: Hmm.
Jeremy Andrea: We can stop at the 1st simulation and include the Mva. Okay? The signal refined signal extraction.
Jeremy Andrea: As Mina said, there is no, not the total use of the available information to discriminate the signal with respect to background. And then there is this end of March.
Jeremy Andrea: How to how to phrase it, end of march. Kind of document, which I I don't know if we are too late or not. This this you you tell us
Jeremy Andrea: and and that would be based on the current draft that we have here
Giacomo Polesello: Yeah, no, as far as understand. So this is basically you. You are happy for this to become as it is to become, public in the in the form of fcc internal note.
Jeremy Andrea: Yes, I I let others comment. Actually.
Giacomo Polesello: Yeah, no, of course, of course, if if we if the we but I think Juliet already made a quite a pretty good job in and going through it. So I think it will be probably
Giacomo Polesello: typical. Uk.
Juliette Alimena: Okay? And then forgive me just because I'm getting confused between or not remembering off the top of my head multiple submissions. Do you already have an entry in Cds. Or is that still in your plan to upload to Cds in the next days
Jeremy Andrea: So we have an entry in Cvs. But with a quickly dirty 2 pages made back in December. So if we, if we have your agreements. We can upload this new version with your corrections to Juliet. I think, Mina, you already implemented those.
Jeremy Andrea: and we will go for that
Juliette Alimena: I think that'd be ideal
Giacomo Polesello: That would be great. Yes.
Rebeca Gonzalez Suarez: Yeah, that makes sense. But I think eventually you should really target the paper with this as well.
Rebeca Gonzalez Suarez: And it's a good plan, anyway.
Juliette Alimena: Okay. Great. Now I understand. Thanks.
Juliette Alimena: Giacomo, I see your hand is up. You had another question
Giacomo Polesello: Yes, I have a yes, I have a more less
Giacomo Polesello: questions. I was wondering. Actually, have you tried to, from my experience, a really huge rejection you get if you cut very narrowly, if you use a test mass
Giacomo Polesello: and you cut very narrowly around the the photon energy.
Giacomo Polesello: because for for each for each.
Giacomo Polesello: For each ultima there is a
Giacomo Polesello: fixed at photon energy because of the recoil formula.
Giacomo Polesello: and of course the the photon is measured. 3% of SQL. T.
Giacomo Polesello: So cutting around that should give you a
Giacomo Polesello: wonderful, you can cut very narrow, and it should. We give you a wonderful level of rejection?
Giacomo Polesello: That was just a as a suggestion
Meena Meena: So I did not get which cut you are suggesting to apply
Giacomo Polesello: To you. I see that you on the left you. You are putting only an upper limit on the, on the energy of the laptop a lower limit on the energy of the laptop. If you can go to the previous slide, how the cuts, I think.
Giacomo Polesello: yeah, yeah, yeah.
Giacomo Polesello: Put a lower limit on the energy of the Lepton. But what you can
Giacomo Polesello: is, and you put a mass window. But here I have a hydronic decay. So the mass window has to be corresponding to hydronic resolution, of course.
Giacomo Polesello: and whereas you have, you can put a window around the for each.
Giacomo Polesello: For each Alp mass. You can put a window around the the photon energy, which is fixed
Giacomo Polesello: and measured with extreme precision. 3% of auscurity
Jeremy Andrea: Yeah, indeed, that that's clearly an excellent idea. We have to look
Giacomo Polesello: At that point, really you. And then, in my experience in that really did blow us out, particularly for low masses, because for low masses.
Giacomo Polesello: You end up with a with a photon, which is at approximately 45 Java
Giacomo Polesello: And at 45 drive. Of course, you.
Giacomo Polesello: this little background of ZZ plus photon.
Giacomo Polesello: Okay, just a just a suggestion. But it's quite nice. Analysis is is useful.
Juliette Alimena: Actually, I realize I have a related question, how did you determine the size of the mass windows? Or how did they?
Juliette Alimena: Yeah.
Meena Meena: As we can see on the lower mass. The pick is very sharp, and we can put a short mass window
Meena Meena: as compared to higher mass
Juliette Alimena: Okay. So you made some estimation of the width by looking at these plots
Meena Meena: Yes.
Juliette Alimena: Okay.
Giacomo Polesello: And and how does it scale? Okay, I remember that for the for the H and Li was putting windows of
Giacomo Polesello: kind of 20% of a square root, square root mass, or something like that. Yeah, I would.
Giacomo Polesello: It's probably it's probably similar to see
Giacomo Polesello: 4, yes, 4 over square root of 10 square root. 10 is 3. So yeah, it's motivation, you know.
Giacomo Polesello: So it makes sense
Juliette Alimena: Okay. Great.
Juliette Alimena: Okay. So I see. Sing Sangoon. You have your hand up
Sanghyun Ko: Yeah, thank you very much. It's 1st time for me to join this meeting. So forgive me if I ask very basic questions, and I see that analysis already. Tail end of stage. So if you go to the slide 7, the plot with your digest mass.
Sanghyun Ko: So I was wondering, how did you?
Sanghyun Ko: In this plot, how the digest mass is estimate estimated because I was a bit surprised if you see the plot in the top right. The digest mass peak is so sharp.
Sanghyun Ko: so
Meena Meena: Yes, currently, we are using only jet only jets variable.
Meena Meena: after selecting gamma plus 2 jets, we are just using jets for momentum
Sanghyun Ko: Jet. So you are selecting 2 Ak, so the Theram Kt jets
Sanghyun Ko: calculate the invariant mass between 2 Gen. Objects
Meena Meena: Sorry. Could you please repeat, I didn't understand you fully.
Sanghyun Ko: So you're simply selecting 2 jets from the jet algorithm you mentioned in the previous slide
Meena Meena: Yes.
Sanghyun Ko: And calculate, invert mass.
Meena Meena: Yes.
Sanghyun Ko: And it has a pick around 0 point 3 geez
Giacomo Polesello: Yeah. The
Meena Meena: Yes.
Giacomo Polesello: T, yeah, if I can chime in. Yes, the question is actually
Giacomo Polesello: at this point, the 2 jets are completely collashing.
Giacomo Polesello: Wouldn't it make more sense, having a single jet and taking the environment of the jet
Sanghyun Ko: Yes.
Giacomo Polesello: I probably asking something like that
Sanghyun Ko: Exactly, because in this mass scale I would expect one jet so
Giacomo Polesello: Exactly. No, that's it, because they are asking 3 jets. So so I suppose that the 2 jets are then built in a somewhat a better way. But then the mask comes out more or less. Okay, anyway.
Jeremy Andrea: It's just to to. It's an exclusive jet reconstruction. So we asked for exactly 3 jets, one being the photon. So we asked for exactly 2 jets to be reconstructed. So by construction, there is only 2 jets.
Jeremy Andrea: And it turned out to describe relatively, okay, actually, quite well, as you can see, this particular case is at low masses.
Jeremy Andrea: so that that might be the reason. If we would have used inclusive jet reconstruction, probably it would have been different.
Jeremy Andrea: So there is no cone. There is no cone in the jet algorithm. It's adapting the cone to what he it sees in the data or in the sample
Giacomo Polesello: Yeah, it looks a bit narrow, indeed, but
Sanghyun Ko: Especially if we consider the the
Sanghyun Ko: energy resolution of the kernel meter. But that's another effect, probably.
Sanghyun Ko: But okay, I understand. How did you do that?
Giacomo Polesello: Actually you do. You have an idea on the lower plot, in the same figure, in the same? Why, you have 2 peaks in the jets
Giacomo Polesello: in the jet. 30 biomass
Meena Meena: For that for 10. Gb.
Giacomo Polesello: For Tangeria. Yes.
Meena Meena: Oh, yeah, maybe, or
Giacomo Polesello: And basically, you know, and it could.
Giacomo Polesello: Okay, no, I know why.
Giacomo Polesello: Hmm.
Giacomo Polesello: I know. Why. Don't know
Jeremy Andrea: Let us know, because myself, I don't know
Giacomo Polesello: When we ask ourselves
Jeremy Andrea: Sure that I could not find the
Giacomo Polesello: No, you see how it evolves with the with the lifetime. I assume that Fd. Is the lifetime
Jeremy Andrea: Yes. Okay.
Giacomo Polesello: And so basically what? When you calculate the environment mass.
Giacomo Polesello: you should correct, the environment is always done. I suppose the jets are only always reconstructed, assuming that they start from the center. I suppose so. The 4 momentum you get in
Giacomo Polesello: in. Dentist, I'm afraid, is reconstructed on assuming that you start from the center
Giacomo Polesello: at that point. Of course you you are under overestimate. You underestimated the jet mass. If
Giacomo Polesello: if the if you are very far away from the vertex.
Giacomo Polesello: So you should, you should basically correct, for it
Jeremy Andrea: Okay, yeah, it makes sense.
Sanghyun Ko: And I have another question. The selection of the the signal points maybe I missed, since it already wrote in the Slide 4. So apparently there should be some constraint from the Ctk width.
Sanghyun Ko: and
Sanghyun Ko: in this study you are selecting the signal points only that that is not constrained by the cdisk width right?
Meena Meena: Yes.
Sanghyun Ko: Okay, okay, got it.
Sanghyun Ko: Okay. Thanks.
Meena Meena: Thank you.
Juliette Alimena: Okay? Great other questions.
Juliette Alimena: Okay, I'm not hearing any, Mina. I can just say that I quickly took a look at your backup slide about my questions and thanks very much. I'm satisfied with these answers, and I think the rest of my questions were just like textual corrections. So please, indeed, change the paper like this and upload it to Cds
Meena Meena: Okay, okay, thank you so much.
Juliette Alimena: No problem.
Juliette Alimena: Okay. Great. Then thanks. Again, Mina. And I think now we can switch to the the next talk from Gail
Gaelle Sadowski: Hello!
Juliette Alimena: Hello!
Gaelle Sadowski: And my screen
Juliette Alimena: Perfect.
Gaelle Sadowski: But can you see the the slides now?
Juliette Alimena: I can.
Gaelle Sadowski: Okay, great.
Gaelle Sadowski: So this is a follow-up of the AV natural study I've been doing with Cld full simulation.
Gaelle Sadowski: So this is the 1st attempt of physics analysis with a long list particle we use the geometry. Cld. Option one version 4.
Gaelle Sadowski: This is not the most recent geometry, but it was the only one available when we started.
Gaelle Sadowski: and we plan to use a new geometry soon.
Gaelle Sadowski: This analysis depends mainly on tracking
Gaelle Sadowski: the we want to reproduce the analysis made with Delphus on this paper with simulation.
Gaelle Sadowski: we choose the G electron channels
Gaelle Sadowski: so as a reminder, we are some tracking issues.
Gaelle Sadowski: In cld tracking is made with conformer tracking, which contain several States
Gaelle Sadowski: for reconstructed prompt tracks and the last step for displaced tracks.
Gaelle Sadowski: This is the performance made at click with conformer tracking, and we observe that vertexes are reconstricted up to 600
Gaelle Sadowski: and when I tried to reproduce this plot with Hnl. With Cld.
Gaelle Sadowski: we can see that there is almost no differences with or without this this space step.
Gaelle Sadowski: so by investigating through them this last step, this is all of the parameters, the code.
Gaelle Sadowski: and the issue was with Maxelongel and Maxelongel Lz, which are the window extension for the next it.
Gaelle Sadowski: The initial value was 0 point 1, but if we set it to 0 point 5,
Gaelle Sadowski: then we observe twice more reconstructed vertexes. We can see if difference in blue, the generated vertex displacement, and in the red, the reconstructive vertex displacement before and after.
Gaelle Sadowski: So now, if we try with different channel masses, we can see at the top the generated latex displacement, and below the reconstructed displacement.
Gaelle Sadowski: We now observe, reconstructed, that axis up to 600 as expected in the conformal tracking paper.
Gaelle Sadowski: If you look more closely to the tracking efficiency.
Gaelle Sadowski: So we compare different value of Maxell angle parameters with 0 point 1 the initial value, and we can see that the effect is quite significant. The tracking efficiency is improved a lot.
Gaelle Sadowski: So therefore, the value 0 point 5 is used for the rest of the analysis.
Gaelle Sadowski: We also had a look at the fake rates, but it's
Gaelle Sadowski: The value of Maxelongel does not have a significant effect.
Gaelle Sadowski: but it's very high around 10 to 20%. So it's higher than expected in the Clg node we, for now we don't understand why we need to investigate a bit more.
Gaelle Sadowski: We also observe an issue with the Truck to Coastal Association.
Gaelle Sadowski: This is at the top a plot showing the vertex displacement generated in blue and reconstructed in red with tracks coming from reconstructed electrons.
Gaelle Sadowski: and below, considering all tracks associated with all control particles.
Gaelle Sadowski: so the tracks are present. But if we look into quadra particles they are mainly photons, meaning that electrons are not reconstrated properly
Gaelle Sadowski: so, for now the analysis is made with reconstructed electron defined as
Gaelle Sadowski: the Pandora particle, regardless of the particle identification that matches a Monte Carlo electron
Gaelle Sadowski: and a reconstitute track within delta below 0 point 2,
Gaelle Sadowski: and then object selection with recoil electron of at least one gev. And event selection with at least
Gaelle Sadowski: to reconstitute electron with a sum of charge equals 0
Gaelle Sadowski: invariant mass incompatible with the z bosom
Gaelle Sadowski: and missing transverse energy at least 10 Gev, and then the lattice reconstriction
Gaelle Sadowski: is meant with the electron trucks.
Gaelle Sadowski: So this is the analysis cut flow. We use a different cross section than the one used with the 1st analysis.
Gaelle Sadowski: because the mixing angle is this one. And if we look at this table we can see that the number of expected events is 0.
Gaelle Sadowski: So we multiplied cross-section by 5 of the Earth magnitude to expect some events
Gaelle Sadowski: in the cut flow. We can see that for 30 Gv. Hnl. The true reconstitute electron
Gaelle Sadowski: already removed a lot of the signal.
Gaelle Sadowski: This is a place where the lifetime is longer. So the texts are really placed and then badly reconstructed
Gaelle Sadowski: with a 50 gev. We lose around one order of magnitude, and for 70 and 90 gev.
Gaelle Sadowski: This is the case where this is the most.
Gaelle Sadowski: This is very good. We have construction, but this is because this is not very displaced.
Gaelle Sadowski: and this is a static histogram for vertex displacement.
Gaelle Sadowski: and we still have to define precisely the signal extraction.
Gaelle Sadowski: and to conclude the displays.
Gaelle Sadowski: The tracks are now reconstructed. Better.
Gaelle Sadowski: The discriminating variables have been identified and tested.
Gaelle Sadowski: and an initial selection has been implemented.
Gaelle Sadowski: The signal extraction appeared to be a bit challenging.
Gaelle Sadowski: Tracks are not associated to clusters. So for now we use Monte Carlo information for electronic modification.
Gaelle Sadowski: The next steps will be more Monte Carlo simulation
Gaelle Sadowski: to for the region of interest for displaced vertexes and to study the impact of trocher geometry on physics performance.
Gaelle Sadowski: and that's all. Thank you.
Juliette Alimena: Okay, great thanks. A lot.
Juliette Alimena: Questions.
Gaelle Sadowski: Brush.
Juliette Alimena: Maybe I can already start with one while people think so when you mentioned on
Juliette Alimena: about electrons not being reconstructed properly, what
Juliette Alimena: this is the what you mentioned again on the summary slide about tracks not being associated to to clusters. That's the reason why
Juliette Alimena: electrons are not being reconstructed
Gaelle Sadowski: Yes, that's it.
Juliette Alimena: Okay, so.
Jeremy Andrea: So.
Juliette Alimena: Either. Sorry.
Jeremy Andrea: If I may. Yeah, sorry. I think there is an ambiguity here, because if you look at the
Jeremy Andrea: as Gale shown, if you look at the Pandora particle you can match known electron to to Monte Carlo electrons.
Jeremy Andrea: So it could be. It could be electron Id more than reconstruction that that has a problem. So this is something that we were investigating
Juliette Alimena: Okay.
Giacomo Polesello: Okay, what kind of country are you doing for electronic?
Giacomo Polesello: I don't know. We have to dig into it. Yeah.
Giacomo Polesello: what is picked out by the program, as is
Jeremy Andrea: Yes, yes, we are. Yeah, we definitely have need to have a look. It took already some time to understand from where the problem is coming from.
Jeremy Andrea: So the as as Gary said, the 2 suspicions are the
Jeremy Andrea: matching tracks to to photons, to photons through e-cal cluster. And then electron id
Juliette Alimena: Okay, but the clusters are there, and the tracks are there. They're just not being matched, or you don't know yet.
Jeremy Andrea: That's a guess. That's a guess.
Juliette Alimena: Gotcha?
Juliette Alimena: Other questions.
Juliette Alimena: Really? None.
Juliette Alimena: Okay.
Juliette Alimena: Well, here you. You have a note based on the the parts that are are solid, and and we've read it and given you lots of comments. So I know where we're set there in terms of documentation.
Juliette Alimena: and I guess you. You continue in the next months, and you will target a future paper when some of these studies are more finalized as well
Gaelle Sadowski: No. Yes. Yes.
Gaelle Sadowski: Okay. Great.
Juliette Alimena: Okay.
Juliette Alimena: Any final questions?
Juliette Alimena: Yes, please. Sorry. I'm mispronouncing
Vasiliki Mitsou: Okay? Yeah. Thank you. Just a question concerning
Vasiliki Mitsou: the timeline, because we had a study on Cds about 2 particle angular correlations and a hidden ballet
Vasiliki Mitsou: model. But we have not yet added the the plots, the final plots.
Vasiliki Mitsou: So
Vasiliki Mitsou: Can we do that next week? Is it fine if we want this work to be part of the feasibility, study
Juliette Alimena: I would ask for from help from Patricia or others
Patrizia Azzi: Yeah, because I'm the one that has been following that, because when I was checking all the all the references and all the notes. Then then I saw that, and then someone proposed to have instead the archive that you have already published. But that refers to a pure Elc based simulation
Patrizia Azzi: and and so so well, we don't think that that fits in that, you know. Context
Vasiliki Mitsou: Right.
Patrizia Azzi: Paper of the report.
Patrizia Azzi: So it is very, very late, I think, in general, we would like to have a few days to, you know to really kind of look at the plots. I don't know if the problem is that you haven't made them yet. I think again. As for this other analysis.
Patrizia Azzi: You know it's okay. If the reference is not in the final report, and then you will have your paper, and then it will appear in something, you know, some other documents later on, at the moment it's just one reference. There's no plots from this analysis. So our latest decision today was actually just to remove the reference. Let you finish your work, and then, when the work is done, it will be
Vasiliki Mitsou: Yeah.
Patrizia Azzi: Publish and come out. And there's nothing against your work, you know. So it's just that the timeline we need to basically give all the document this week, so that I mean, it's already the 27, th so that someone else can actually, you know, accept it.
Patrizia Azzi: It's not that we do a heavy review. We just do a mini review. But we need, you know.
Patrizia Azzi: yeah, right?
Patrizia Azzi: Minimal time. So that that's just the reason. And and I sent you explicitly the email, because for me it was strange to have the note. It looks, you know, fairly fairly complete. But then there is all the empty space
Vasiliki Mitsou: Yeah, we. We tried to really optimize the cards so to do something
Vasiliki Mitsou: more than what was intended at the beginning. Yeah.
Patrizia Azzi: I I look, I what I what I what I feel is that for now we can just remove that that reference, because everything that is referenced on the 31st of March needs to be available and approved, and we have all our procedure. Also. The new Cds is not the easiest place to make
Patrizia Azzi: things public. But it is also true that between now and the strategy, as far as I know, the 31st of May
Patrizia Azzi: there will be, you know, additional information, and we can pass to the to the Vpg, so I don't really know the format. But, for instance, we have another 10 page document that is coming out just about the Bsm.
Patrizia Azzi: That might, you know, maybe, that it's easier to be modified and to add a reference. There, now I'm saying it. I'm not the chief editor of that. I'm just one of the participants, but being a smaller document, it's kind of easier. I don't think that I don't know if the final report will be able to be modified. But there are other documents where you can appear. Let's put it like this.
Patrizia Azzi: Okay, thank you.
Patrizia Azzi: Between now, and you know the the end of May.
Patrizia Azzi: I know for sure that in the hig sector, for instance, there are numbers that will keep coming, and I don't know the specific of how these modifications and these communications, you know, between the authors and the Ppg. Will happen.
Patrizia Azzi: but I will suggest that it's okay for today. Do not take it, not take it, you know, personally, if we remove that reference, but then you keep finishing up as soon as you can.
Patrizia Azzi: and once the note is there, and then we approve it, and we make it public, and I don't know if you're planning to do an archive as well.
Patrizia Azzi: then I I have the feeling that there might be another place where it could, you know. Come back in
Patrizia Azzi: that that would be my feeling, as far as I know, of the overall organization of the of the paperwork, and Rebecca also has the hands up. She's also in the in the Bsm document as well, and in the Ppg. So she can also chime in with more information
Rebeca Gonzalez Suarez: I mean, actually, I want to ask you perspective, because I mean, one thing is the feasibility, study, report. Another thing. Are the documents that are like individual inputs.
Patrizia Azzi: Can you speak slowly, Rebecca? Long time
Rebeca Gonzalez Suarez: Sorry to you. I'm sorry.
Rebeca Gonzalez Suarez: So I mean, I have a question for you, Patricia, because the feasibility study is conceived like naturally, as an input for this strategy. So I guess it will be submitted as a main input. But then all of this other individual summaries, they are also inputs to the strategy
Patrizia Azzi: Yes, yes.
Rebeca Gonzalez Suarez: Okay. So as such, today is 27, there is 3 days to submit a 1st version. Indeed, there is time in until May to like update things. How much is gonna be updated? Indeed, I really have no idea. But I think it will be good if people are updating things which I hope that that can happen, that they give us a heads up with enough time, because I don't know how much we are gonna be updating from submission now to the second possible submission also for us in the Ppe
Patrizia Azzi: No, I see your point. But they what could happen is that? Imagine that that they converge this week with everything you know, and like middle of April. We can have this note public. And then, you know, if it was possible, which I think to update the the Bsm the Bsm document. For sure. That is much easier.
Patrizia Azzi: The bigger document at some point is, really it's already out of my hands. I mean the
Rebeca Gonzalez Suarez: I mean
Patrizia Azzi: The only communication I can say is that you know, as of today, the only thing is remove the reference because the note is not going to be published on the 31st of March. This comes from the very top I have, you know my hands are tied, but for the for the Bsm. Maybe document, which is only 10 pages. Then then I think we can give you a heads up saying, You know this couple of things came up.
Patrizia Azzi: They are new, and we want to add them. I would be more optimistic there. Personally.
Patrizia Azzi: that's my feeling. The feasibility report is a beast, and and the reason why we're making all this, there is another issue. Sorry I don't want to take too much time, but but the fact that we're doing all this specific physics, shorter documents is because in the feasibility report itself there is not that much of the physics at the end. It's really a huge document about the overall project.
Patrizia Azzi: And so it is also the right place for you guys to actually be quoted in this shorter document. It would be the better place to be, I would think, because it's the one that from the Ppg. Would be easier to read, because the physics is more, you know, specific and concise, and there are all the references in a single place. The other guy it's, you know, 700 pages
Patrizia Azzi: that would be my.
Patrizia Azzi: So keep. Keep working. I mean, if you're saying.
Patrizia Azzi: have the plots tomorrow, you know better. If you, the sooner you're done, and you tell you know we are done, we're ready for review. Just just go ahead and and we'll we'll try to to just put it in the in the best place possible. There is no objective reason, you know, not to have it added. It's just a question of deadlines
Vasiliki Mitsou: Okay, yeah, it's understood. Yeah.
Patrizia Azzi: Okay. So I'm happy that I wrote to you in person because it was a I was very confused when I saw the document. So thank you for being here
Vasiliki Mitsou: Great thanks.
Juliette Alimena: Okay any other questions related to deadlines and status, perhaps.
Juliette Alimena: Okay. Well, if there's no other business, and I think we can close the meeting already here.
Juliette Alimena: And, as usual, if you have an update on your work, and you'd like to present just just ping us.
Juliette Alimena: Okay, thanks. Everyone
Rebeca Gonzalez Suarez: Thanks so much for the meeting
Patrizia Azzi: Thank you. Bye.
Meena Meena: Bye, bye. Thank you.