1.2 TeV collisions at LHCb
On December 14th 1.2 TeV proton beams have collided at LHCb during LHC machine studies. Many LHCb subdetectors, except for sensitive silicon detectors, recorded the world’s highest energy pp collisions.…
proton interactions with gas
Position of proton interactions inside the vertex detector with residual gas are shown in blue or red, proton-proton interactions in green (more details).
K0 reconstruction
So called “strange particles” are produced in the proton-proton collisions and decay inside LHCb detector into two other particles reconstructed as red tracks (more details).
High multiplicity events
A high multiplicity event with three muon tracks (green) recorded on December 12th. Other events can be found here.
More proton-proton collisions
On December 8th many long tracks were reconstructed using the detectors along the whole length of the LHCb. Collision vertex is clearly observed (bottom left). The tracks are curved in…
RICH rings
LHCb RICH detectors are used to identify particles. The circles show possible position of measured points for different kinds of particles traversing the detector. The measured points clearly choose one…
First proton-proton collisions
A proton-proton collision candidate event. On November 23 protons from two beams circulated at LHC and have collided at LHCb. LHC news video youTube LHCb control room at this historical…
First reconstructed pi0’s
pi0 is the short lived particle decaying into two photons which were measured in the electromagnetic calorimeter ECAL. The plot above shows the nearly perfectly reconstructed pi0 mass.
First proton interactions
… reconstructed Vertex Locator VELO track. Other reconstructed events can be found here. … event reconstructed later (offline reconstruction). Particularly interesting is the blue track recorded in the Vertex Locator…