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QCD corrections to pair production of Type III Seesaw leptons at hadron colliders

Ruiz, Richard

QCD corrections to pair production of Type III Seesaw leptons at hadron colliders Thumbnail


Authors

Richard Ruiz



Abstract

If kinematically accessible, hadron collider experiments provide an ideal laboratory for the direct production of heavy lepton partners in Seesaw models. In the context of the Type III Seesaw Mechanism, the O(αs) rate and shape corrections are presented for the pair production of hypothetical, heavy SU(2)L triplet leptons in pp collisions at √s = 13, 14, and 100TeV. The next-to-leading order (NLO) K-factors span, approximately, KNLO = 1.1 − 1.4 for both charged current and neutral current processes over a triplet mass range mT = 100GeV − 2TeV. Total production cross sections exhibit a +5% −6% scale dependence at 14TeV and ±1% at 100TeV. The NLO differential K-factors for heavy lepton kinematics are largely flat, suggesting that na¨ıve scaling by the total KNLO is reasonably justified. The resummed transverse momentum distribution of the dilepton system is presented at leading logarithmic (LL) accuracy. The effects of resummation are large in TeV-scale dilepton systems. Discovery potential to heavy lepton pairs at 14 and 100TeV is briefly explored: at the High-Luminosity LHC, we estimate a 4.8 − 6.3σ discovery potential maximally for mT = 1.5 − 1.6TeV after 3000 fb−1. With 300 (3000) fb−1, there is 2σ sensitivity up to mT = 1.3−1.4TeV (1.7−1.8TeV) in the individual channels. At 100TeV and with 10 fb−1, a 5σ discovery can be achieved for mT = 1.4−1.6TeV. Due to the factorization properties of Drell-Yan-type systems, the fixed order and resummed calculations reduce to convolutions over tree-level quantities.

Citation

Ruiz, R. (2015). QCD corrections to pair production of Type III Seesaw leptons at hadron colliders. Journal of High Energy Physics, 2015(12), 1-29. https://doi.org/10.1007/jhep12%282015%29165

Journal Article Type Article
Acceptance Date Dec 2, 2015
Online Publication Date Dec 28, 2015
Publication Date Dec 28, 2015
Deposit Date Apr 25, 2019
Publicly Available Date Apr 25, 2019
Journal Journal of High Energy Physics
Print ISSN 1126-6708
Electronic ISSN 1029-8479
Publisher Scuola Internazionale Superiore di Studi Avanzati (SISSA)
Peer Reviewed Peer Reviewed
Volume 2015
Issue 12
Pages 1-29
DOI https://doi.org/10.1007/jhep12%282015%29165
Public URL https://durham-repository.worktribe.com/output/1297961

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Publisher Licence URL
http://creativecommons.org/licenses/by/4.0/

Copyright Statement
This article is distributed under the terms of the Creative Commons Attribution License (CC-BY 4.0), which permits any use, distribution and reproduction in any medium, provided the original author(s) and source are credited.






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