impact parameter

American  

noun

1. the perpendicular distance from the original center of a set of scattering particles to the original line of motion of a particle being scattered.

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Example Sentences

The impact parameter is measured with a precision of 10 µm for transverse momenta of 100 GeV/c and 20 µm for 10 GeV/c.

From Nature

The impact parameter resolution is smaller than 20 µm for particle tracks with large transverse momentum.

From Nature

The resulting candidate is further required to point back to the PV, for example, to have a small impact parameter, consistent with zero, with respect to it.

From Nature