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Electroweak corrections to squark-antisquark production at the LHCb


Hollik, Wolfgang; Lindert, Jonas M; Mirabella, Edoardo; Pagani, Davide (2015). Electroweak corrections to squark-antisquark production at the LHCb. Journal of High Energy Physics, 2015(8):99.

Abstract

We present the calculation of the electroweak corrections for squark-antisquark pair production at the LHC within the Minimal Supersymmetric Standard Model. Taking into account all possible chirality and light-flavor configurations, we evaluate the NLO EW corrections, which are of $\mathcal{O}\left({\alpha}_s^2\alpha \right)$, as well as the subleading tree-level contributions of $\mathcal{O}\left({\alpha}_s\alpha \right)$ and $\mathcal{O}\left({\alpha}^2\right)$ . Numerical results are presented for several scans in the SUSY parameter space and relevant differential distributions are investigated. The impact of the electroweak corrections is nonnegligible and strongly depends on the chirality configuration of the produced squarks. Our analysis includes a discussion of photon-gluon initiated processes with a focus on the impact of the corresponding large PDF uncertainties.

Abstract

We present the calculation of the electroweak corrections for squark-antisquark pair production at the LHC within the Minimal Supersymmetric Standard Model. Taking into account all possible chirality and light-flavor configurations, we evaluate the NLO EW corrections, which are of $\mathcal{O}\left({\alpha}_s^2\alpha \right)$, as well as the subleading tree-level contributions of $\mathcal{O}\left({\alpha}_s\alpha \right)$ and $\mathcal{O}\left({\alpha}^2\right)$ . Numerical results are presented for several scans in the SUSY parameter space and relevant differential distributions are investigated. The impact of the electroweak corrections is nonnegligible and strongly depends on the chirality configuration of the produced squarks. Our analysis includes a discussion of photon-gluon initiated processes with a focus on the impact of the corresponding large PDF uncertainties.

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Additional indexing

Item Type:Journal Article, refereed, original work
Communities & Collections:07 Faculty of Science > Physics Institute
Dewey Decimal Classification:530 Physics
Language:English
Date:2015
Deposited On:16 Feb 2016 13:17
Last Modified:15 Sep 2017 11:38
Publisher:Springer
ISSN:1029-8479
Free access at:Publisher DOI. An embargo period may apply.
Publisher DOI:https://doi.org/10.1007/JHEP08(2015)099
Related URLs:http://arxiv.org/abs/1506.01052 (Organisation)

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