Author: Joel Closier

Animation (click on picture): pp collisions and proton beam gas collisions recorded on Nov. 23, 2009. Other reconstructed events can be found here.

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.

… 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…

LHC has restarted on November 21st. Two LHC beams have made a full turn of the LHC. Afterwards, after synchronization with the LHC accelerating system (RF capture in technical language),…

first (two) rings produced by Cherenkov light emitted by cosmic particles in the two radiators of RICH1 have been observed. See explanations

LHCb preparation for the LHC restart (expected in November) is progressing very well. » Read the Bulletin article

37 school teachers from all over the world visited CERN to participate in the High School Teachers programme. » see explanations

Computer images of the first beam through beam through LHCb (see video on YouTube or CERN CDS) The LHC’s anti-clockwise beam transfer system was tested over the weekend June 6-7,…

In the movie Angels and Demons the Illuminati have stolen antimatter from CERN in order to destroy Vatican. But what is antimatter? Is is real? Is it dangerous? What is…

Laureates: Yoichiro Nambu, Makoto Kobayashi, Toshihide Maskawa.The LHCb Collaboration is deeply grateful to the laureates for having prepared a precise theoretical framework in which we will try to understand why…