Particle Physics - @lemouth exercise 1a by irelandscape

utopian-io · @irelandscape · May 25 '18 (edited)

$9.75

Particle Physics - @lemouth exercise 1a

![](https://cdn.steemitimages.com/DQmYuV5Q1CuPp7ScoCntrZ6MgUPptwhcXNzvQpmirKAUepe/image.png)
[Image Credit: [CERN](https://home.cern/topics/large-hadron-collider)]
#### Repository
https://github.com/irelandscape/cern_contributions

#### Introduction
This post is my result of the exercise 1a submitted by @lemouth in his post [Particle physics @ Utopian - Detecting particles at colliders and implementing this on a computer](https://steemit.com/utopian-io/@lemouth/particle-physics-utopian-detecting-particles-at-colliders-and-implementing-this-on-a-computer#@irelandscape/re-mactro-re-irelandscape-re-lemouth-particle-physics-utopian-detecting-particles-at-colliders-and-implementing-this-on-a-computer-20180525t124618611z)

#### Post Body
After following @lemouth instructions and implementing a one liner in the *Execute* method template, here is the output that I get.
```text
root@lhc:~/madanalysis5/test_folder/Build# ./MadAnalysis5job ../Input/tth_aa.list 
    * SampleAnalyzer for MadAnalysis 5 - Welcome.
    * Initializing all components
      - version: 1.6 (2018/05/04) 
      - general: everything is default.
      - extracting the list of event samples...
      - analyzer 'test_analysis'
BEGIN Initialization
END   Initialization
    * Running over files ...
    * 1/1  /root/cern_contributions/exercises/1a/tth_aa.root
Error in cling::AutoloadingVisitor::InsertIntoAutoloadingState:
   Missing FileEntry for ExRootAnalysis/ExRootTreeReader.h
   requested to autoload type ExRootTreeReader
Error in cling::AutoloadingVisitor::InsertIntoAutoloadingState:
   Missing FileEntry for ExRootAnalysis/ExRootTreeWriter.h
   requested to autoload type ExRootTreeWriter
Error in cling::AutoloadingVisitor::InsertIntoAutoloadingState:
   Missing FileEntry for ExRootAnalysis/ExRootTreeBranch.h
   requested to autoload type ExRootTreeBranch
Error in cling::AutoloadingVisitor::InsertIntoAutoloadingState:
   Missing FileEntry for ExRootAnalysis/ExRootResult.h
   requested to autoload type ExRootResult
Error in cling::AutoloadingVisitor::InsertIntoAutoloadingState:
   Missing FileEntry for ExRootAnalysis/ExRootClassifier.h
   requested to autoload type ExRootClassifier
Error in cling::AutoloadingVisitor::InsertIntoAutoloadingState:
   Missing FileEntry for ExRootAnalysis/ExRootFilter.h
   requested to autoload type ExRootFilter
Error in cling::AutoloadingVisitor::InsertIntoAutoloadingState:
   Missing FileEntry for ExRootAnalysis/ExRootProgressBar.h
   requested to autoload type ExRootProgressBar
Error in cling::AutoloadingVisitor::InsertIntoAutoloadingState:
   Missing FileEntry for ExRootAnalysis/ExRootConfReader.h
   requested to autoload type ExRootConfParam
Error in cling::AutoloadingVisitor::InsertIntoAutoloadingState:
   Missing FileEntry for ExRootAnalysis/ExRootConfReader.h
   requested to autoload type ExRootConfReader
Error in cling::AutoloadingVisitor::InsertIntoAutoloadingState:
   Missing FileEntry for ExRootAnalysis/ExRootTask.h
   requested to autoload type ExRootTask
        => file size: 943.63 ko
WARNING: --------------------------------------------------------------------------------
WARNING:  Msg     | the input file has been produced with ROOT version 61000 whereas the loaded ROOT libs are related to the version 61206
WARNING:  Details | 
WARNING:  Where   | Function = ReadHeader ; File=root/ROOTReader.cpp ; Line=70
WARNING: --------------------------------------------------------------------------------
        => sample format: Delphes-ROOT file produced by Delphes + MA5tuned-cards.
        => progress: [===>                               ]
Photons: 3, Electrons: 0, Muons: 0

        => progress: [======>                            ]
Photons: 3, Electrons: 0, Muons: 0

        => progress: [==========>                        ]
Photons: 3, Electrons: 2, Muons: 1Thank you for 

        => progress: [=============>                     ]
Photons: 1, Electrons: 0, Muons: 1

        => progress: [=================>                 ]
Photons: 4, Electrons: 0, Muons: 0

        => progress: [====================>              ]
Photons: 3, Electrons: 0, Muons: 1

        => progress: [========================>          ]
Photons: 4, Electrons: 0, Muons: 0

        => progress: [===========================>       ]
Photons: 4, Electrons: 1, Muons: 0

        => progress: [===============================>   ]
Photons: 3, Electrons: 0, Muons: 0

        => progress: [==================================>]
Photons: 6, Electrons: 1, Muons: 0

        => progress: [===================================]
        => total number of events: 10 ( analyzed: 10 ; skipped: 0 ) 
    * Finalizing all components ...
    * Total number of processed events: 10.
BEGIN Finalization
END   Finalization
+----------------------------------------------------------------------------------------------------------------------+
|                              LogReport-Warning                                                                       |
+----------------------------------------------------------------------------------------------------------------------+
| Message                                       NIterations @ File                                              Line   |
|----------------------------------------------------------------------------------------------------------------------|
| the input file has been produced with ROOT v  1             root/ROOTReader.cpp                               70     |
+----------------------------------------------------------------------------------------------------------------------+
    * Goodbye.

```

As you can see the program appears to run properly but some errors are reported at startup.

Please let me know in your comments if you know what the problem might be.

The code couldn't be any simpler:

```cpp
bool test_analysis::Execute(SampleFormat& sample, const EventFormat& event)
{
  cout << "Photons: " << event.rec()->photons().size() << ", "
       << "Electrons: " << event.rec()->electrons().size() << ", "
       << "Muons: " << event.rec()->muons().size() << endl;
...
}
```

#### Resources
* [Particle physics @ Utopian - Detecting particles at colliders and implementing this on a computer](https://steemit.com/utopian-io/@lemouth/particle-physics-utopian-detecting-particles-at-colliders-and-implementing-this-on-a-computer#@irelandscape/re-mactro-re-irelandscape-re-lemouth-particle-physics-utopian-detecting-particles-at-colliders-and-implementing-this-on-a-computer-20180525t124618611z), by @lemouth

#### Series Backlinks
This is the first post in this series.

👍 steemstem, justtryme90, lafona-miner, abigail-dantes, kevinwong, lemouth, fredrikaa, qurator-tier-1-2, anarchyhasnogods, kerriknox, mobbs, herverisson, procrastilearner, kryzsec, thevenusproject, samminator, ertwro, terrylovejoy, de-stem, saunter, gra, zest, kenadis, dber, nitesh9, sco, laylahsophia, nedspeaks, alexdory, ksolymosi, carloserp-2000, lianaakobian, mountain.phil28, churchboy, lesshorrible, derbesserwisser, exercisinghealth, steemitstats, planetenamek, amavi, alexander.alexis, simplifylife, foundation, fancybrothers, the-devil, realblockchain, chloroform, yuxi, jamhuery, dexterdev, borislavzlatanov, himal, whileponderin, adetola, rbm, rjbauer85, mayowadavid, croctopus, rharphelle, hadji, dysfunctional, conficker, temitayo-pelumi, arconite, and 56 others

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