Abstract
Motivated by the fact that naturalness arguments strongly suggest that the supersymmetry (SUSY)-preserving Higgsino mass parameter cannot be too far above the weak scale, we reexamine Higgsino pair production in association with a hard QCD jet at the High Luminosity LHC. We focus on events from the production and subsequent decay, , of the heavier neutral Higgsino. The novel feature of our analysis is that we suggest angular cuts to reduce the important background from events more efficiently than the cut that has been used by the ATLAS and CMS Collaborations. Other cuts, needed to reduce backgrounds from , , and production, are also delineated. We plot out the reach of LHC14 for 300 and and also show distributions that serve to characterize the Higgsino signal, noting that Higgsinos may well be the only superpartners accessible at LHC14 in a well-motivated class of natural SUSY models.
14 More- Received 12 October 2021
- Accepted 14 April 2022
DOI:https://doi.org/10.1103/PhysRevD.105.095017
Published by the American Physical Society under the terms of the Creative Commons Attribution 4.0 International license. Further distribution of this work must maintain attribution to the author(s) and the published article’s title, journal citation, and DOI. Funded by SCOAP3.
Published by the American Physical Society