The Proton Beam at the Large Hadron Collider (LHC)at CERN

question 21

Multiple Choice

The proton beam at the Large Hadron Collider (LHC) at CERN can reach a luminosity of 10³⁴ cm^-2s^-1 (this means that in a 1 cm² area,10³⁴ protons encounter each other every second) .A cross section for collisions of the order of 1 pb (picobarn) provided evidence of the Higgs boson.If the accelerator runs without interruption,approximately how many of these Higgs events can one expect in one year at the LHC?

• A)3 * 10⁵ Higgs events per year
• B)1 * 10⁴ Higgs events per year
• C)400 Higgs events per year
• D)6 * 10⁶ Higgs events per year
• E)2000 Higgs events per year

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