The World of Particles presentation

The World of Particles presentation
THE WORLD OF PARTICLES
and their interactions
Prof Cristina Lazzeroni
(STFC Public Engagement Fellow) &
Dr Maria Pavlidou
(Ogden Science Officer)
What are the building blocks of materials?
Like Russian Dolls, matter is
made out of smaller and
smaller parts.
http://htwins.net/scale2/
Where is CERN?
you are
here
CERN
The Large Hadron Collider at CERN
CERN
What is ATLAS?
cut-away view
people
The particle zoo: the Quark family
Name: Up
Surname: Quark
Name: Charm
Surname: Quark
Name: Top
Surname: Quark
Name: Down
Surname: Quark
Name: Strange
Surname: Quark
Name: Beauty
Surname: Quark
Copyright
The particle zoo: the Lepton family
Name: Electron
Surname: Lepton
Name: Muon
Surname: Lepton
Name: Tau
Surname: Lepton
Name: Electron
Neutrino
Surname: Lepton
Name: Muon
Neutrino
Surname: Lepton
Name: Tau Neutrino
Surname: Lepton
Copyright
The particle zoo: the Boson family
Name: Gluon
Surname: Boson
Name: Photon
Surname: Boson
Name: Z
Surname: Boson
Name: W Plus
Surname: Boson
Name: W Minus
Surname: Boson
Name: Higgs
Surname: Boson
Copyright
Matter and Anti-matter
Matter: with one white
feature e.g. white hat
Anti-matter: with the same
feature in black e.g. black
hat
Copyright
Task 1: Happy Families game
Your aim is to collect all six members of any of the
families:
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Quarks
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Anti-quarks
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Leptons

Anti-leptons
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Bosons
The player who collects the most families is the
winner.
Rules of the Happy Families game
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The aim of the game is to collect as many families (groups of 6
cards that belong to the same family) as possible.
Deal out all the cards so that every player gets an almost
equal number of cards; this will depend on the number of
players.
The dealer starts by asking another player for a card needed
to complete a family.
If the other player has the card, they must give it to this player.
The player may continue asking for cards until they make a
mistake.
When a mistake is made the player who was asked for their
card takes their turn to request cards.
During the game, players can request and retake the cards
taken from them in previous rounds.
When a player gathers a family they must put the 6 cards face
down on the table in front of them.
The player who collects the most families is the winner.
Task 2: Make your own particle !
Read the trump card of
your particle
 Design your particle and
draw your design on the
trump card
 Give mass to your
particle by adding
plasticine
 Make your particle using
the resources
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Task 3: Snap game
Your aim is to collect as many cards as you can
from the families of quarks, leptons, bosons.
The player who collects the most cards is the
winner.
Shout
when particles
LIKE each other!
Rules of the Snap game
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Anyone may deal. The cards are shuffled and dealt out to the players
as equally as possible. Players do not look at their cards but keep them
in a face down stack in front of them.
The player to dealer's left begins and the turn to play passes clockwise.
At your turn you simply turn the top card of your face-down pile and
place it face-up alongside. In this way each player forms a pile of
face-up cards beside their face-down pile.
If at any moment two of the face-up piles have particles that like each
other at the top (for example electron and Z), anyone who notices this
shouts "snap!".
The first person who shouted "snap!" takes both matching face-up piles
and adds them face-down to the bottom of their face-down pile.
The game then continues as before, beginning with the player to the
left of the last one who turned a card.
If you have no face-down cards left when it comes to your turn, you
simply turn over your face-up pile to make a new face-down pile and
turn over the top card as before.
If you have no cards left at all, you are out of the game. The last player
in is the winner (or alternatively, the player with the largest number of
cards).
Task 4: Write your own particle story
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Particles meet with
each other
Particles can turn into
other particles and
then to new particles
Particle meetings
follow the rules of
likes and dislikes
Build your own story using pipe cleaners
and following one of the examples given.
Example of a story
One sunny day Jimmy the
electron and Molly the antielectron were playing in their
garden eating cookies and
drinking orange juice. Jimmy
started feeling really hot from the
sun. Molly said “oh poor you…”.
She took his hand to comfort him
but suddenly…they both
disappeared!
In their place a very greedy
photon appeared who started
eating all the cookies. The
cookies were many and the
photon got bigger and bigger
until… it exploded with a big
“splat” sound!
Left behind were two chatty
muons who immediately started
to discuss the wonders of this
world and how too many
cookies in one go are bad for
you…
Feynman Diagrams:
Additional Material
For High School Students
Particles write stories: Feynman
diagrams show these stories
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Particles interact with
each other
Particles can turn into
other particles and
then to new particles
All particles have
charge (positive,
negative or zero)
During their
interactions, the total
charge stays the same
Interactions follow the
rules of likes and dislikes
References
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Slide 2: building blocks of matter from
http://rooksheathscience.com/2014/06/, Russian dolls from
http://www.kzero.co.uk/
Slide 3: Europe map from
http://commons.wikimedia.org/wiki/Atlas_of_Europe
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Slide 4: map of LHC from http://imgarcade.com/1/lhc-map/
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Slide 5: ATLAS from http://atlas.ch/
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Slides 6, 7,8, 9: the particle zoo from
http://www.particlezoo.net/
Slide 13 snap image from
http://www.milwaukeemarketingresults.com/Snap/13194572?pid=283521
Slide 16: cartoon 1 from http://www.picturesof.net/ cartoon 2
from https://chefpeterpang.wordpress.com/ and cartoon 3
from https://www.colourbox.com
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