Systematic Analysis of Frontier Energy Collider Data

1
Systematic Analysis of Frontier Energy Collider
Data
Georgios Choudalakis
2
MIT High pT Group
3
Goal
We must maximize our chances to find new physics
here, as soon as possible.
Therefore, analyses should be

• Unbiased
• Fast
• Using all data
• Using all experiments

4
Vistaoverview data and detect population and
shape discrepancies
model independent
Toy example

• Thanks to Vista we can understand
• Great cross section phenomena
• Detector behavior
• MC production
• Detector simulation

5
Sleuthsearch for statistically significant
excess of data in high SpT tails
quasi model independent
6
Quaero
What do we (Grad students) usually do to
interpret the data?

• Pick some underlying theory (e.g. leptoquarks,
  Z...).
• Decide which subset of the data of our experiment
  is related to it.
• Find signature
• Perform analysis

(on the way, make many assumptions)
model dependent

• Quaero
• Automates hypothesis testing
• Makes it 104 times faster
• Considers all data and all available experiments

7
Quaerohypothesis testing
model dependent
8
Bardmodel builder
TaskSystematically do what theorists usually do
to explain discrepancies between data and SM.
?
9
Bardmodel builder
MadGraph produces hundreds of tree-level
diagrams, just in seconds.
10
Bard
final state
parameters
H
MadGraph
MadEvent
events
L
Quaero
Data(D)
SM
11
Summary