The Twitter hashtag #pArunatLHC
LHC collides protons with lead ions for the first time - CERN
Smallest lab-made drop of liquid might cause strange particle behavior - symmetry magazine
A bullet through an apple - symmetry magazine
First proton-lead collision test at the LHC successful - symmetry magazine
LHC trials proton–lead collisions - physicsworld.com
Proton–ion collisions- the final challenge - CERN Courier
Successful test of proton–ion collisions in LHCb - CERN Courier
Lead-proton collisions yield surprising results - MIT News Office
Accelerator soup- Scientists to mix elements in LHC to study recipe for heavy-ion collisions - symmetry magazine (about the first tests in 2011)
Historic Halloween for the LHC - I'm not a lion
Hybrid beams in the LHC - CERN Document Server
Video recording of Hangout with CERN- Mouse smashes mammoth (S02E01) - YouTube
First results from proton–lead colliding beams - CERN Courier
Colliding different particle species- the LHC's proton-lead run - CMS Experiment
Protons smash lead ions in first LHC collisions of 2013 - CERN
The proton-lead run- A new adventure for the ALICE experiment - ALICE Matters
Detlef Küchler- the lead source expert - ALICE Matters
Reine and Michaela- Upgrading the LHC for asymmetric collisions - ALICE Matters
John Jowett- Asymmetric collisions at LHC - ALICE Matters
Django Manglunki- Heavy ions from the source to the LHC - ALICE Matters
Videos: Jowett and Fernandez- Making proton-lead ion collisions at the LHC - ALICE Matters
Videos: Wiedemann and Antinori- Proton-lead collisions physics perspectives - ALICE Matters
2011 LHC lead ion run - view of the CERN control room - CERN Document Server
Accelerator Soup- recipe for heavy-ion collisions in proton-lead test - ALICE Matters
Unexpected 'ridge' seen in CMS collision data again - physicsworld.com
Photo albums of ALICE Control Room during proton-lead collisions