Speaker
Juri Fiaschi
(University of Southampton)
Description
We define a Focus Point (FP) Asymmetry, $A_{\rm FP}$, obtained by integrating the normalised transverse momentum distribution of either lepton produced in the Drell-Yan (DY) process below and above a point where a variety of popular $Z^\prime$ models all have the same magnitude.
For a given $Z^\prime$ mass the position of this FP is predictable, depending only on the collider energy and on the low transverse momentum cut chosen in the normalisation procedure.
The resulting $A_{\rm FP}$ is very sensitive to the $Z^\prime$ width, and can be used to constrain this parameter in experimental fits.
Authors
Juri Fiaschi
(University of Southampton)
Elena Accomando
(Southampton University)
Stefano Moretti
(STFC - Rutherford Appleton Lab. (GB))
Claire Shepherd-Themistocleous
(STFC - Rutherford Appleton Lab. (GB))
