Advent Calendar 2012 December 18th

20 12 2012

There are probably only three generations of matter. Why is this? How do we know? That would happen if there was a fourth generation? The Z boson holds the answers!

Plot taken from http://pdg.lbl.gov/2012/reviews/rpp2012-rev-cross-section-plots.pdf

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Advent Calendar 2012 December 17th

20 12 2012

The discovery of the J/Psi in 1974 changed the world of particle physics forever! The discovery of the fourth quark was great evidence in support of the quark model of hadrons and Cabibbo’s quark mixing.





Advent Calendar 2012 December 16th

19 12 2012

What’s the deal with the X(3872)? Why are we still finding new mesons at low mass? There’s still new physics to be found at lower energies!

Apologies to CDF for not mentioning them by name, they saw a very clear signal for the X(3872) as well!

Some excellent talks on the X(3872) can be found in the Charm 2010 conference: http://indico.ihep.ac.cn/conferenceOtherViews.py?view=standard&confId=1452

I’m still playing catch-up! More to come tomorrow.





Advent Calendar 2012 December 15th

19 12 2012

15 is for… erm… T-violation. Why does time prefer one direction over the other? We don’t know the full answer, but we do have some hints from the quark sector.

Paper on the arXiv: http://arxiv.org/abs/1207.5832





Advent Calendar 2012 December 14th

19 12 2012

14 is for 14TeV, what we had planned for the LHC. So this video is all about how we glimpsed into the distant and not so distant future of particle physics. We need to keep looking ahead, the LHC is not the end of the journey!

Some links from the CERN public page about the accelerator complex and history:
Accelerator complex:
http://public.web.cern.ch/public/en/research/AccelComplex-en.html
http://public.web.cern.ch/public/en/research/SPS-en.html
http://public.web.cern.ch/public/en/research/LEP-en.html
http://public.web.cern.ch/public/en/LHC/LHC-en.html
http://public.web.cern.ch/public/en/research/CLIC-en.html





Advent Calendar 2012 December 13th

16 12 2012

13 is for… well 13 squared is 169, which is almost 173.5, which is for the mass of the top quark in GeV. So let’s talk about the top quark!





Advent Calendar 2012 December 12th

14 12 2012

The 12 days of Higgsmas! I can’t sing, but I made this anyway. Enjoy!

Images taken from:
12
Bubble chamber, Interactions, http://www.interactions.org/cms/?pid=2100&image_no=CE0057

11
Marie Curie, Wiki, http://en.wikipedia.org/wiki/Marie_Curie
Positron, Wiki, http://en.wikipedia.org/wiki/Positron
J/Psi, Duke, http://www.phy.duke.edu/~mehen/ECT/talks.html
SuperKRings, UC Irvine, http://www.ps.uci.edu/~tomba/sk/tscan/pictures.html
sin2beta, Imperial, http://www3.imperial.ac.uk/highenergyphysics/research/experiments/babar
ALEPH & CDF, Fermilab, http://home.fnal.gov/~skands/plain.html
HERA, DESY, http://hasylab.desy.de/images/content/e8/e72/index_eng.html
Higgs & Englert, ATLAS, http://www.atlas.ch/photos/collaboration-meetings.html
Feynman, http://www.richard-feynman.net/gallery.htm
Thomson, MaNEP, http://www.manep.ch/en/technological-challenges/nanotubes.html
SLAC, Fermilab, http://www.fnal.gov/pub/today/archive_2004/today04-06-18.html
Bevatron, Wiki, http://en.wikipedia.org/wiki/File:Bevatron.jpg

10
Omega discovery, CERN, http://teachers.web.cern.ch/teachers/archiv/HST2001/bubblechambers/omegaminus.pdf

9
UTFit, http://utfit.org/UTfit/
CKMFitter, http://ckmfitter.in2p3.fr/www/results/plots_moriond12/ckm_res_moriond12.html

8
Gluon discovery at PETRA, ICEPP Tokyo, http://www.icepp.s.u-tokyo.ac.jp/news/epsprize-e.html

7
7TeV collision CMS, CMS, http://cms.web.cern.ch/news/new-two-particle-correlations-observed-cms-detector-lhc
7TeV collision LHCB, CERN Courier, http://cerncourier.com/cws/article/cern/42331
7TeV collision ATLAS, http://www.atlas.ch/photos/events-collision-proton.html
LHC Control Room, CERN Bulletin, http://cdsweb.cern.ch/record/1246424
Lumi, CMS, http://cms.web.cern.ch/news/summary-2011-p-p-running

6
R plots, PDG, http://pdg.lbl.gov/2012/figures/figures.html
Top quark, Cornell, http://www.lepp.cornell.edu/Research/EPP/CMS/CornellCMSPhysics.html

5
ATLAS events, ATLAS,http://www.atlas.ch/photos/events-collision-proton.html
CMS events, CMS, http://cms.web.cern.ch/news/cms-search-standard-model-higgs-boson-lhc-data-2010-and-2011

4
ATLAS, ATLAS, http://atlas.ch/atlas_photos/fulldetector/fulldetector_02.html
CMS, ExtremeTech, http://www.extremetech.com/extreme/140513-cern-the-higgs-boson-unfortunately-is-behaving-exactly-as-we-expected
LHCb, Fermilab Today, http://www.fnal.gov/pub/today/archive_2007/today07-07-05.html
ALICE, ALICE, http://aliceinfo.cern.ch/Public/Welcome.html

3
Line width plot, ALEPH, Delphi, L3 , OPAL and SLD, http://arxiv.org/pdf/hep-ex/0509008v3.pdf
OPAL event display, Cambridge University, http://www.hep.phy.cam.ac.uk/drw/pix/opalpics.html
Delphi event display, Delphi, http://delphiwww.cern.ch/delfigs/export/pubdet4.html

2
Liquid crystals viewed with polarized light, about.com, http://chemistry.about.com/od/growingcrystals/ig/Crystal-Photo-Gallery/Liquid-Crystals.-MuZ.htm

1
CMS plots, CMS, http://cms.web.cern.ch/news/observation-new-particle-mass-125-gev
ATLAS plots, ATLAS, http://www.atlas.ch/news/2012/latest-results-from-higgs-search.html

Everything else: Made on my laptop with SVG, PHP, Powerpoint and patience