Definition of "pseudorapidity" []

• A measure of the velocity of a particle relative to that of a beam of particles, approximated by a function of its angle (noun)

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• "Jets above pseudorapidity of 3.5 or so are usually poorly reconstructed, and people have forgotten why its important."
• "The researchers determined the average number of charged particles emitted perpendicular to the beam direction, known as 'pseudorapidity density'."
• "First proton-proton collisions at the LHC as observed with the ALICE detector: measurement of the charged particle pseudorapidity density at Ös = 900 GeV."