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do not use link tags for images
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@GuillermoFidalgo
GuillermoFidalgo committed Dec 21, 2023
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122 changes: 39 additions & 83 deletions _episodes/02- Part 2 : FirworksWeb.md
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Original file line number Diff line number Diff line change
Expand Up @@ -48,7 +48,7 @@ and accesses files stored on the CERN [EOS](https://twiki.cern.ch/twiki/bin/view
[http://fireworks.ucsd.edu/](http://fireworks.ucsd.edu/){: target="_blank"}.
You may be required to login through CERN SSO. You should see a webpage
like the following:
![fireworksweb_1.png]({% link fig/fireworksweb_1.png%}){: width="70%"}
![fireworksweb_1.png](../fig/fireworksweb_1.png){: width="70%"}

2. Open a file. Let's say we are working on an analysis and we are working with a ttbar nanoaod data set:

Expand Down Expand Up @@ -83,18 +83,18 @@ From here we pick one file (e.g. first one)

Then we put the path into the text box and click `Load File XCache_UCSD`

![fireworksweb_2.png]({%link fig/fireworksweb_2.png%}){: width="70%"}
![fireworksweb_2.png](../fig/fireworksweb_2.png){: width="70%"}

Then the webpage will start printing out some status information and
after some time later once the file is loaded, the webpage will display
something like the following:

![fireworksweb_3.png]({%link fig/fireworksweb_3.png%}){: width="70%"}
![fireworksweb_3.png](../fig/fireworksweb_3.png){: width="70%"}

The webpage might redirect you straight to the event display, or you can
follow the link and you will see the fireworks open:

![fireworksweb_4.png]({%link fig/fireworksweb_4.png%}){: width="70%"}
![fireworksweb_4.png](../fig/fireworksweb_4.png){: width="70%"}

## Exploration 1: EW Physics

Expand All @@ -104,7 +104,7 @@ Open
Once the path is provided click the
`Load File EOS` button. Once it opens you should something like the following:

![fireworksweb_5.png]({%link fig/fireworksweb_5.png%}){: width="70%"}
![fireworksweb_5.png](../fig/fireworksweb_5.png){: width="70%"}

Before starting to play around, we can move to a more interesting event.
You can scan through the events by clicking the event navigation buttons
Expand All @@ -115,7 +115,7 @@ lumi/event number to go to the new event.
Skip to the third event in the file, run/lumi/event is
1/416042/83208204.

![fireworksweb_6.png]({%link fig/fireworksweb_6.png%}){: width="70%"}
![fireworksweb_6.png](../fig/fireworksweb_6.png){: width="70%"}

Try to click the interesting objects in the 3D view window and answer
the below question:
Expand All @@ -137,7 +137,7 @@ make them go \"main\" view.
>> ## Solution
>> In this configuration, the muon collection is filtered with expression "pt()>5 & isLooseMuon()",
>> meaning that each muon is only displayed if its pT is larger than 5 !GeV, and it passes the Loose ID requirements.
>> ![fireworksweb_7]({%link fig/fireworksweb_7.png%}){: width="70%"}
>> ![fireworksweb_7](../fig/fireworksweb_7.png){: width="70%"}
> {: .solution}
{: .challenge}

Expand All @@ -147,7 +147,7 @@ make them go \"main\" view.
> display only muons with pT lower than 5 GeV (revert the change afterwards)
>> ## Solution
>> You should see this:
>> ![fireworksweb_8]({%link fig/fireworksweb_8.png%}){: width="70%"}
>> ![fireworksweb_8](../fig/fireworksweb_8.png){: width="70%"}
>{: .solution}
{: .challenge}

Expand All @@ -158,7 +158,7 @@ make them go \"main\" view.
> and click \"Add\". Why does the 5.9 GeV muon stand out? Could you have seen this by zooming in on the Rho-Z View?
>> ## Solution
>> You should see this:
>> ![fireworksweb_9]({%link fig/fireworksweb_9.png%}){: width="70%"}
>> ![fireworksweb_9](../fig/fireworksweb_9.png){: width="70%"}
> {: .solution}
{: .challenge}

Expand Down Expand Up @@ -239,89 +239,45 @@ Collection\") with a bDiscriminator filter applied.
**NOTE: Please do not forget the escape character \"\\\"**.
> ## Show/Hide
> ![fireworksweb_10]({%link fig/fireworksweb_10.png%}){: width="70%"}
> ![fireworksweb_10](../fig/fireworksweb_10.png){: width="70%"}
{: .solution}
Hint 2 (MC only): use the
[[PrunedGenParticles](https://twiki.cern.ch/twiki/bin/edit/CMS/PrunedGenParticles?topicparent=CMS.SWGuideCMSDataAnalysisSchoolLPC2024VisualizationExercise;nowysiwyg=0 "this topic does not yet exist; you can create it."){rel="nofollow"}]{.twikiNewLink}
collection to make sense of the event: filter the collection with
\"!isHardProcess\" to get the relevant particles (rather than the
default filter).
**Hint 2 (MC only)**: use the PrunedGenParticles collection to make sense of the event: filter the collection with \"!isHardProcess\" to get the relevant particles (rather than the default filter).
First, go to the first event, 36/24518.
![Red
led](./SWGuideCMSDataAnalysisSchoolLPC2024VisualizationExercise%20_%20CMS%20_%20TWiki_files/led-red.gif "Red led"){width="16"
height="16" border="0"}[ Question 9 - What is this event? Can you find
the combination of jets from Ws and from tops? ]{style="color: #ff0000"}
::: {.twistyPlugin .twikiMakeVisibleInline}
[[![](./SWGuideCMSDataAnalysisSchoolLPC2024VisualizationExercise%20_%20CMS%20_%20TWiki_files/toggleopen-small.gif){border="0"}[Show
answer\...]{.twikiLinkLabel
.twikiUnvisited}](https://twiki.cern.ch/twiki/bin/viewauth/CMS/SWGuideCMSDataAnalysisSchoolLPC2024VisualizationExercise#)
]{#twistyIdCMSSWGuideCMSDataAnalysisSchoolLPC2024VisualizationExercise9show
.twistyRememberSetting .twistyTrigger .twikiUnvisited .twistyInited}
[[![](./SWGuideCMSDataAnalysisSchoolLPC2024VisualizationExercise%20_%20CMS%20_%20TWiki_files/toggleclose-small.gif){border="0"}[Hide
answer\...]{.twikiLinkLabel
.twikiUnvisited}](https://twiki.cern.ch/twiki/bin/viewauth/CMS/SWGuideCMSDataAnalysisSchoolLPC2024VisualizationExercise#)
]{#twistyIdCMSSWGuideCMSDataAnalysisSchoolLPC2024VisualizationExercise9hide
.twistyRememberSetting .twistyTrigger .twikiUnvisited .twistyHidden
.twistyInited}
:::
> ## Question 9
> What is this event? Can you find the combination of jets from Ws and from tops?
> > ## Show/Hide
> >This is a particularly difficult ttbar event, with one W decaying to leptons (muon+neutrino), and other to hadrons.
>>
>> The transverse mass (mT) of the muon+MET is 98 GeV, very high for a W, presumably due to MET resolution.
>> To make things worse, one of the quarks from the hadronic W is very low pT and does not form a jet.
> {: .solution}
{: .challenge}
::: twistyPlugin
::: {#twistyIdCMSSWGuideCMSDataAnalysisSchoolLPC2024VisualizationExercise9toggle .twistyRememberSetting .twistyContent .twistyInited .twistyHidden}
``` command
This is a particularly difficult ttbar event, with one W decaying to leptons (muon+neutrino), and other to hadrons.
The transverse mass (mT) of the muon+MET is 98 GeV, very high for a W, presumably due to MET resolution.
To make things worse, one of the quarks from the hadronic W is very low pT and does not form a jet.
```
:::
:::
Next, let\'s see event 2744/1876862
> ## Question 10
> What are the objects in the event? Are the muons close to jets?
> > ## Show Answer
> > This is a nice dilepton (e+mu) ttbar event. There are three muons, but two of them are close to jets. Looking at the
>>truth record, we confirm that those two jets are coming from the b quarks. The truth record says that there are following two b-quarks:
>>
>>```
>>pt = 87.4 !GeV, eta = -0.49, phi = 2.39,
>>pt = 52.6 !GeV, eta = 1.96, phi = 1.71
>>
>>While the two jets are
>>pt = 66.5 !GeV, eta = -0.721, phi = 2.287
>>pt = 38.4 !GeV, eta = 2.012, phi = 1.622
>>```
>>The eta / phi directions show good agreement indicating that these indeed are the b-jets.
>> ![fireworksweb_11](../fig/fireworksweb_11.png){: width="70%"}
>{: .solution}
{: .challenge}
![Red
led](./SWGuideCMSDataAnalysisSchoolLPC2024VisualizationExercise%20_%20CMS%20_%20TWiki_files/led-red.gif "Red led"){width="16"
height="16" border="0"}[ Question 10 - What are the objects in the
event? Are the muons close to jets? ]{style="color: #ff0000"}

::: {.twistyPlugin .twikiMakeVisibleInline}
[[![](./SWGuideCMSDataAnalysisSchoolLPC2024VisualizationExercise%20_%20CMS%20_%20TWiki_files/toggleopen-small.gif){border="0"}[Show
answer\...]{.twikiLinkLabel
.twikiUnvisited}](https://twiki.cern.ch/twiki/bin/viewauth/CMS/SWGuideCMSDataAnalysisSchoolLPC2024VisualizationExercise#)
]{#twistyIdCMSSWGuideCMSDataAnalysisSchoolLPC2024VisualizationExercise10show
.twistyRememberSetting .twistyTrigger .twikiUnvisited .twistyInited}
[[![](./SWGuideCMSDataAnalysisSchoolLPC2024VisualizationExercise%20_%20CMS%20_%20TWiki_files/toggleclose-small.gif){border="0"}[Hide
answer\...]{.twikiLinkLabel
.twikiUnvisited}](https://twiki.cern.ch/twiki/bin/viewauth/CMS/SWGuideCMSDataAnalysisSchoolLPC2024VisualizationExercise#)
]{#twistyIdCMSSWGuideCMSDataAnalysisSchoolLPC2024VisualizationExercise10hide
.twistyRememberSetting .twistyTrigger .twikiUnvisited .twistyHidden
.twistyInited}
:::

::: twistyPlugin
::: {#twistyIdCMSSWGuideCMSDataAnalysisSchoolLPC2024VisualizationExercise10toggle .twistyRememberSetting .twistyContent .twistyInited .twistyHidden}
``` command
This is a nice dilepton (e+mu) ttbar event. There are three muons, but two of them are close to jets. Looking at the
truth record, we confirm that those two jets are coming from the b quarks.

The truth record says that there are following two b-quarks:
pt = 87.4 !GeV, eta = -0.49, phi = 2.39,
pt = 52.6 !GeV, eta = 1.96, phi = 1.71

While the two jets are
pt = 66.5 !GeV, eta = -0.721, phi = 2.287
pt = 38.4 !GeV, eta = 2.012, phi = 1.622

The eta / phi directions show good agreement indicating that these indeed are the b-jets.

```
:::
:::

## []{#Exploration_3_Higgs_Physics} Exploration 3: Higgs Physics
## Exploration 3: Higgs Physics
Now let us scan the Higgs file
`/store/group/upgrade/visualization/ggh4l.root`
Expand Down

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