Abstract
We present a next-to-leading order accurate simulation of t-channel single-top plus jet production matched to parton showers via the Powheg method. The calculation underlying the simulation is enhanced with a process-specific implementation of the multi-scale improved NLO (Minlo) method, such that it gives physical predictions all through phase space, including regions where the jet additional to the t-channel single-top process is unresolved. We further describe a tuning procedure for the Minlo Sudakov form factor, fitting the coefficient of the first subleading term in its exponent using an artificial neural-network. The latter tuning, implemented as a straightforward event-by-event reweighting, renders the Minlo simulation NLO accurate for t-channel single-top observables, in addition to those of the analogous single-top plus jet process.
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ArXiv ePrint: 1805.09855
On leave from: Rudolf Peierls Centre for Theoretical, Physics, 1 Keble Road, University of Oxford, Oxford, U.K. (Giulia Zanderighi)
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Carrazza, S., Frederix, R., Hamilton, K. et al. MINLO t-channel single-top plus jet. J. High Energ. Phys. 2018, 108 (2018). https://doi.org/10.1007/JHEP09(2018)108
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DOI: https://doi.org/10.1007/JHEP09(2018)108