Extrapolation technique pitfalls in asymmetry measurements at colliders Academic Article uri icon


  • © 2016 Published by Elsevier B.V. Asymmetry measurements are common in collider experiments and can sensitively probe particle properties. Typically, data can only be measured in a finite region covered by the detector, so an extrapolation from the visible asymmetry to the inclusive asymmetry is necessary. Often a constant multiplicative factor is advantageous for the extrapolation and this factor can be readily determined using simulation methods. However, there is a potential, avoidable pitfall involved in the determination of this factor when the asymmetry in the simulated data sample is small. We find that to obtain a reliable estimate of the extrapolation factor, the number of simulated events required rises as the inverse square of the simulated asymmetry; this can mean that an unexpectedly large sample size is required when determining the extrapolation factor.

altmetric score

  • 1.25

author list (cited authors)

  • Colletti, K., Hong, Z., Toback, D., & Wilson, J. S.

citation count

  • 0

publication date

  • September 2016