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The Standard Model
Transcript of The Standard Model
•Dense central nucleus
•Nucleus contains positively charged protons
•Also electrically neutral neutrons
Has negatively charged electron cloud around it Murray Gell-man Born September 15, 1929 Quarks •Discovered in Stanford Linear Accelerator Center Difference Between Chadwick and Standard Chadwick discovered the neutron
Standard model has neutrons
Also added quarks though. American physicist Won the Nobel prize for physics in 1969 He formulated the quark model of hadronic resonances. •Quarks are in the protons, neutrons, and electrons •Quarks were suggested by Murray Gell-mann and George Zweig in 1964 •Quarks were discovered in 1968 . HIGGS BOSON Inside Quark
Named after Peter Higgs
Quickly decays into other particles
Hard to detect "Atom." Wikipedia. Wikimedia Foundation, 28 Oct. 2012. Web. 29 Oct. 2012. <http://en.wikipedia.org/wiki/Atom>.
"The Particle Adventure | What Is Fundamental? | Are Protons and Neutrons Fundamental?" The Particle Adventure | What Is Fundamental? | Are Protons and Neutrons Fundamental? N.p., n.d. Web. 29 Oct. 2012. <http://www.particleadventure.org/pn_fund.html>.
"How Were Quarks Discovered?" WikiAnswers. Answers, n.d. Web. 29 Oct. 2012. <http://wiki.answers.com/Q/How_were_quarks_discovered>.
What Is the Higgs Boson? Dir. Ian Sample and Laurence Topham. The Guardian. Guardian News and Media, 3 July 2012. Web. 30 Oct. 2012.
"Higgs Boson." Wikipedia. Wikimedia Foundation, 29 Oct. 2012. Web. 29 Oct. 2012. <http://en.wikipedia.org/wiki/Higgs_boson>.
"Atom Builder." PBS. PBS, n.d. Web. 06 Nov. 2012. <http://www.pbs.org/wgbh/aso/tryit/atom/>.
"Murray Gell-Mann." Wikipedia. Wikimedia Foundation, 11 June 2012. Web. 06 Nov. 2012. <http://en.wikipedia.org/wiki/Murray_Gell-Mann>. Bibiliography http://reich-chemistry.wikispaces.com/file/view/AtomLabeled.gif/185356187/AtomLabeled.gif Chadwick Model---> http://upload.wikimedia.org/wikipedia/commons/2/2c/Murray_Gell-Mann_-_World_Economic_Forum_Annual_Meeting_2012.jpg http://en.wikipedia.org/w/index.php?title=File:Quark_structure_proton.svg&page=1 Up and Down Quarks Up quark-lightest quark (+ charge)
Down quark-2nd lightest (- charge)
Down+up quark= Neutron Strange Quark &
Bottom Quark (-) Strange-3rd lightest
Name comes from strangely long lifetime Bottom quark also known as beuty quark
Common decay from Top Quark and Higgs Boson Charm Quark & Top Quark (+) Charm quark-3rd most massive
Top Quark-Most massive quark http://www.pbs.org/wgbh/aso/tryit/atom/images/atom.gif Quiz 1. What is the one main difference between the Chadwick model and Standard model?
2. Who was the Higgs Boson named after?
3. Why is the Higgs Boson hard to detect?
4. Name 3 types of quarks. Extra Credit What is one of the two cities that was bombed in Japan?