We study the off-shell Higgs data in the process pp→h(∗)→Z(∗)Z(∗)→4ℓ, to constrain deviations of the Higgs couplings. We point out that this channel can be used to resolve the long- and short-distance contributions to Higgs production by gluon fusion and can thus be complementary to pp→htt¯ in measuring the top Yukawa coupling. Our analysis, performed in the context of Effective Field Theory, shows that current data do not allow one to draw any model-independent conclusions. We study the prospects at future hadron colliders, including the high-luminosity LHC and accelerators with higher-energy, up to 100 TeV. The available QCD calculations and the theoretical uncertainties affecting our analysis are also briefly discussed.

Taming the off-shell Higgs boson / Azatov, Aleksandr; Grojean, C.; Paul, A.; Salvioni, E.. - In: JOURNAL OF EXPERIMENTAL AND THEORETICAL PHYSICS. - ISSN 1063-7761. - 120:3(2015), pp. 354-368. [10.1134/S1063776115030140]

Taming the off-shell Higgs boson

Azatov, Aleksandr;
2015

Abstract

We study the off-shell Higgs data in the process pp→h(∗)→Z(∗)Z(∗)→4ℓ, to constrain deviations of the Higgs couplings. We point out that this channel can be used to resolve the long- and short-distance contributions to Higgs production by gluon fusion and can thus be complementary to pp→htt¯ in measuring the top Yukawa coupling. Our analysis, performed in the context of Effective Field Theory, shows that current data do not allow one to draw any model-independent conclusions. We study the prospects at future hadron colliders, including the high-luminosity LHC and accelerators with higher-energy, up to 100 TeV. The available QCD calculations and the theoretical uncertainties affecting our analysis are also briefly discussed.
120
3
354
368
https://link.springer.com/article/10.1134%2FS1063776115030140
https://arxiv.org/abs/1406.6338v3
Azatov, Aleksandr; Grojean, C.; Paul, A.; Salvioni, E.
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Utilizza questo identificativo per citare o creare un link a questo documento: http://hdl.handle.net/20.500.11767/53618
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