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Next-to-leading order electroweak corrections to off-shell WWW production at the LHC

Triboson processes allow for a measurement of the triple and quartic couplings of the Standard Model gauge bosons, which can be used to constrain anomalous gauge couplings. In this paper we calculate the next-to-leading order electroweak corrections to fully off-shell W$^{−}$W$^{+}$W$^{+}$ productio...

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Autor principal: Schönherr, Marek
Lenguaje:eng
Publicado: 2018
Materias:
Acceso en línea:https://dx.doi.org/10.1007/JHEP07(2018)076
http://cds.cern.ch/record/2621441
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author Schönherr, Marek
author_facet Schönherr, Marek
author_sort Schönherr, Marek
collection CERN
description Triboson processes allow for a measurement of the triple and quartic couplings of the Standard Model gauge bosons, which can be used to constrain anomalous gauge couplings. In this paper we calculate the next-to-leading order electroweak corrections to fully off-shell W$^{−}$W$^{+}$W$^{+}$ production, namely the production of a $ {\ell}_1^{-}{\ell}_2^{+}{\ell}_3^{+}{\overline{\nu}}_{\ell_1}{\nu}_{\ell_2}{\nu}_{\ell_3} $ final state with (ℓ$_{i}$ = e, μ), including all triple, double, single and non resonant topologies and interferences of diagrams with all different vector boson (W, Z, γ) intermediate states. We find large cancellations of the electroweak correction to the $ q\overline{q} $ -induced channel, which includes the exchange of virtual electroweak gauge bosons, and photon-induced jet radiation processes. This accidental compensation is found to be strongly phase space and observable dependent. The resulting corrections in a suitably defined fiducial region thus amount to −2.0%, but rise rapidly for other observables.
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spelling cern-26214412021-11-12T20:32:51Zdoi:10.1007/JHEP07(2018)076http://cds.cern.ch/record/2621441engSchönherr, MarekNext-to-leading order electroweak corrections to off-shell WWW production at the LHChep-exParticle Physics - Experimenthep-phParticle Physics - PhenomenologyTriboson processes allow for a measurement of the triple and quartic couplings of the Standard Model gauge bosons, which can be used to constrain anomalous gauge couplings. In this paper we calculate the next-to-leading order electroweak corrections to fully off-shell W$^{−}$W$^{+}$W$^{+}$ production, namely the production of a $ {\ell}_1^{-}{\ell}_2^{+}{\ell}_3^{+}{\overline{\nu}}_{\ell_1}{\nu}_{\ell_2}{\nu}_{\ell_3} $ final state with (ℓ$_{i}$ = e, μ), including all triple, double, single and non resonant topologies and interferences of diagrams with all different vector boson (W, Z, γ) intermediate states. We find large cancellations of the electroweak correction to the $ q\overline{q} $ -induced channel, which includes the exchange of virtual electroweak gauge bosons, and photon-induced jet radiation processes. This accidental compensation is found to be strongly phase space and observable dependent. The resulting corrections in a suitably defined fiducial region thus amount to −2.0%, but rise rapidly for other observables.Triboson processes allow for a measurement of the triple and quartic couplings of the Standard Model gauge bosons, which can be used to constrain anomalous gauge couplings. In this paper we calculate the next-to-leading order electroweak corrections to fully off-shell $W^-W^+W^+$ production, namely the production of a $\ell_1^-\ell_2^+\ell_3^+\bar{\nu}_{\ell_1}\nu_{\ell_2}\nu_{\ell_3}$ final state with ($\ell_i=e,\mu$), including all triple, double, single and non resonant topologies and interferences of diagrams with all different vector boson ($W,Z,\gamma$) intermediate states. We find large cancellations of the electroweak correction to the $q\bar{q}$-induced channel, which includes the exchange of virtual electroweak gauge bosons, and photon-induced jet radiation processes. This accidental compensation is found to be strongly phase space and observable dependent. The resulting corrections in a suitably defined fiducial region thus amount to $-2.0\%$, but rise rapidly for other observables.arXiv:1806.00307MCNET-18-11CERN-TH-2018-129MCnet-18-11oai:cds.cern.ch:26214412018-06-01
spellingShingle hep-ex
Particle Physics - Experiment
hep-ph
Particle Physics - Phenomenology
Schönherr, Marek
Next-to-leading order electroweak corrections to off-shell WWW production at the LHC
title Next-to-leading order electroweak corrections to off-shell WWW production at the LHC
title_full Next-to-leading order electroweak corrections to off-shell WWW production at the LHC
title_fullStr Next-to-leading order electroweak corrections to off-shell WWW production at the LHC
title_full_unstemmed Next-to-leading order electroweak corrections to off-shell WWW production at the LHC
title_short Next-to-leading order electroweak corrections to off-shell WWW production at the LHC
title_sort next-to-leading order electroweak corrections to off-shell www production at the lhc
topic hep-ex
Particle Physics - Experiment
hep-ph
Particle Physics - Phenomenology
url https://dx.doi.org/10.1007/JHEP07(2018)076
http://cds.cern.ch/record/2621441
work_keys_str_mv AT schonherrmarek nexttoleadingorderelectroweakcorrectionstooffshellwwwproductionatthelhc