Soft gluon resummation for associated squark-electroweakino production at the LHC

Fiaschi, Juri ORCID: 0000-0003-0860-9569, Fuks, Benjamin, Klasen, Michael and Neuwirth, Alexander
(2022) Soft gluon resummation for associated squark-electroweakino production at the LHC. JOURNAL OF HIGH ENERGY PHYSICS, 2022 (6). 130-.

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<jats:title>A<jats:sc>bstract</jats:sc> </jats:title><jats:p>We perform a threshold resummation calculation for the associated production of squarks and electroweakinos at the LHC to the next-to-leading logarithmic (NLL) accuracy. Analytical results for the process-dependent soft anomalous dimension and the hard matching coefficient are presented. The resummed results are matched to fixed-order predictions at next-to-leading order (NLO) in QCD, which are generalised to scenarios with non-universal squark masses and mixings. Numerically, the NLL contributions increase the total NLO cross section by 2% to 6% for squark masses ranging from 1 TeV to 3 TeV, respectively, and they reduce the dependence of the predictions on the factorisation and renormalisation scales from typically ±10% to below ±5%. Our NLO and NLO+NLL calculations have been implemented in the publicly available program Resummino.</jats:p>

Item Type: Article
Uncontrolled Keywords: Resummation, Supersymmetry
Divisions: Faculty of Science and Engineering > School of Physical Sciences
Depositing User: Symplectic Admin
Date Deposited: 14 Sep 2022 14:36
Last Modified: 15 Mar 2024 17:34
DOI: 10.1007/JHEP06(2022)130
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