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arXiv · 1703.04360

Constraining $Z^\prime$ widths from $p_T$ measurements in Drell-Yan processes

Elena Accomando·Juri Fiaschi·Stefano Moretti·Claire H. Shepherd-Themistocleous
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Abstract

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.

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Elena Accomando, Juri Fiaschi, Stefano Moretti, Claire H. Shepherd-Themistocleous. 2017-03-13. Constraining $Z^\prime$ widths from $p_T$ measurements in Drell-Yan processes. https://doi.org/10.1103/physrevd.96.075019

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