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International Masterclasses with ATLAS data

ATLAS outreach meeting, CERN, 11.10.2011

Uta Bilow, TU Dresden

International Masterclasses - the idea

Concept

• Students (16-19 year-olds) spend 1 day at research institute

• Listen to scientists‘ introduction to particle physics

• Work like and with scientists („masters“): measurements with real particle physics data

• Basic idea from UK (1996, Roger Barlow et al.)

Objectives

• Let students explore fundamental forces and building blocks of nature

• Demonstrate the scientific research process

• Stimulate interest in science (proven in refereed evaluation Physics Education 42 (2007) 636-644)

• Offer opportunity for authentic experience

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IPPOG International Masterclasses

Create an international collaboration of students

• over 130 institutes from 24 countries hold masterclasses

• parallel programme in U.S. organized by QuarkNet

• more than 8000 students participating

• since 2005: ~3 weeks each year in March

• 5 masterclasses join in video conference with CERN at the end of the day

• discuss results and differences• combine results (better accuracy)• quiz and prizes• questions to scientists at CERN

• schedule, physics framework, description of all participating institutes: www.physicsmasterclasses.org

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Participation International Masterclasses

In 2012:+ Kroatia+ Ireland

US(Quarknet)adding:

- Canada- Columbia- China- Japan

0

20

40

60

80

100

120

140

2005 2006 2007 2008 2009 2010 2011

Institutes US program

0100020003000400050006000700080009000

2005 2006 2007 2008 2009 2010 2011

Students

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5

10

15

20

25

2005 2006 2007 2008 2009 2010 2011

Countries

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New in 2011: LHC in Masterclasses

• ATLAS W-Path (K.Jende, M.Kobel et al., TU Dresden)https://kjende.web.cern.ch/kjende/en/wpath.htm

• ATLAS Z-Path (F.Ould-Saada, M.Pedersen, Oslo Univ)https://kjende.web.cern.ch/kjende/en/zpath.htm

• CMS (K.Cecire et al.): J/Ψ reconstruction,

in 2012: W/Z measurement with real CMS data• ALICE (D. Hatzifotiadou et al.): looking for strange

particles

Positive feedback from organisers and students• „students liked it very much“• „big success“• „students enjoyed the new exercises“• „I had the great feeling of having worked with real data

like a scientist“

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48 MCs

32 MCs

26 MCs

10 MCs

ATLAS W-Path

• 995 *real data* preselected events (~ 200 W ℓ )• W charge asymmetry structure of the proton• 5 *simulated* H WW search for yet undiscovered• Simplified interpretation:

• Expected raw student measurement: #W+/#W- = 1.56 ± 0.17• Compare to first ATLAS paper: #W+/#W- = 1.52 ± 0.07

CERN-PH-EP–2010-037 (October 2010)

44% 22%

61% 39%

Using MINERVA

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• 700 *real data* preselected events (~ 300 Z ℓℓ )• Find Dilepton events calculate invariant mass• 300 *simulated* Z´ ℓℓ search for yet undiscovered• Derive mass spectrum

•

• Discuss importance of invariant mass concept• Discuss meaning of finite width• Discuss meaning of new mass peaks (Z´, not shown above)

Using HYPATIA

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ATLAS Z-Path

Use of real data

• one of the key elements of all programs!• What kind of data do you prefer to work with?

(survey K.Jende, 425 students answered)

• ATLAS policy:• published data • good data quality • caveat on the DVD: for educational purposes only

Real data!

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Plans for 2012W-path: • 10 000 *real data* preselected events (~ 2000 W ℓn )

give each institute a different set of data, which can be compared for consistency and combined in the video conference.

• include 250 events WW + 0 jets students measure opening angle between 2 leptons and

combine their results in histogram for angular distribution

Z-path:• larger data sample• use automatic tools to loop through• under development, for 2013?

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International Masterclasses setup• All frameworks (ATLAS, CMS, ALICE…) collected by IPPOG at

www.physicsmasterclasses.org/index.php?cat=physics

• Translation via IPPOG group Available in 4 (ALICE) to 11 (ATLAS) languages

• Descriptions for local organizers atwww.physicsmasterclasses.org/index.php?cat=local_organisation&page=exercises

• Central Organisation: TU Dresden (M. Kobel, U.B.)

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• ATLAS• Minerva (M.Wielers, P. Watkins, T. McLaughlan et al.)

based on ATLANTIShttp://atlas-minerva.web.cern.ch

• Hypatia (C. Kourkoumelis et al.)based on ATLANTIShttp://hypatia.phys.uoa.gr

• CMS• iSpy online (M.Hategan, K. Cecire et al.)

in collaboration with Quarknet (US)www12.i2u2.org/elab/cms/event-display

• ALICE• ALICE masterclass application (P.Debski, Y.Foka et al.)

simplified ALICE event display in ROOT environmenthttp://aliceinfo.cern.ch/static/Pictures/pictures_High_Resolution/MasterClassWebpage.html

Technical Platforms and Tools used

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THANK YOU

for your attention

Backups

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Schedule 2011www.physicsmasterclasses.org/index.php?cat=schedule

…

Lots of friendly engaged young video conference moderators

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Masterclass Day – sample agenda

LOCAL TIME: ACTIVITY:

8:30-9:00 Registration & Welcome

9:00-10:00 Introduction to Particle Physics

10:30-11:30 Second Talk or Tour

12:00-13:00 Lunch

13:00-15:00 Data Analysis, including Introduction

15:30-16:30 Information about Particle Physics, Studying physics,…

16:30-17:30 EVO Video Conference

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Refereed evaluation in Physics Education 42 (2007) 636-644

• severity: just right• success independent of a-priori knowledge and gender

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Most important correlation

• Understanding the scientific research processgenerates interest in (especially modern) physics

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Other Big Programs using real LHC data

------------------- masterclass – like ---------------------------------------

UK National Particle Physics Masterclasseswww.particlephysics.ac.uk/teach/master-classes.htmlat 19 institutes, 25-30 events / year (mostly March/April)

German „Netzwerk Teilchenwelt“ (Dresden et al.)www.teilchenwelt.de (masterclasses, cosmic rays and more)

22 institutes send Ph.D. students to schools (100 - 200/year)Funded w/ 0.35M€/year over 3 years by German Ministry of R&E

-------------------- other formats ---------------------------------------- Interactions in Understanding the Universe I2U2 (FNAL et al.)

Among it: CMS E-lab: www18.i2u2.org/elab/cms/home/project.jspstudent-led, teacher-guided online project in the class-roomFunded w/ 0.48M€/year over 3 years by NSF

Learning with ATLAS@CERN (Athens et al. : finished)www.ea.gr/ep/lacern and www.learningwithatlas-portal.eudevelop frameworks and educational resources for teachers and studentsFunded w/ 0.30M€/year over 2 years by European FP7

More

PATHWAY to Inquiry Based Science Teaching (incl Athens)http://cordis.europa.eu/search/index.cfm?fuseaction=proj.document&PJ_LANG=EN&PJ_RCN=11653804&pid=28&q=6312203980A57F1F678D7E24CF2F2CDF&type=adveducational resources, teaching practices and instructional models for teachersCovering all sciences, funded w/ 3.4 M€ for 24 participants

Discover the Cosmos (incl Athens, started 09/2011)involving teachers and pupils in e-Science (particle physics and astronomy) via masterclasses, summer schools, contests,…funded w/ 0.94 M€ for 14 participants

Strange Particle Education Scenario (Stockholm)www.ep.ph.bham.ac.uk/twiki/bin/view/General/MinervaResources#Neutral_Decay_scenario_under_devMasterclasses measuring ATLAS K0 and L decays

LHC Masterclasses at Science Centres (Oslo)Collaboration w/ at least 4 science centres in Norway

… for sure more (Poland, Canada, …) …