Taming the off-shell Higgs boson

Abstract

We study the off-shell Higgs data in the process $pp\to h^{(\ast )}\to Z^{(\ast )}{Z}^{(\ast )}\to 4\ell$, 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 $pp\to ht\bar{t}$ 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.

30 pages, 7 figures, 3 tables; v2: small improvements in discussion, references added, typos corrected. Version submitted to JETP for a special issue in honor of the 60th birthday of V. Rubakov; v3: matches version published in JETP

References in corpus (13)

• Observation of a new particle in the search for the Standard Model Higgs boson with the ATLAS detector at the LHC
• Parton distributions for the LHC
• MCFM for the Tevatron and the LHC
• ZZ production at hadron colliders in NNLO QCD
• Constraints on the Higgs boson width from off-shell production and decay to Z-boson pairs
• Pseudo-Goldstone Higgs Production via Gluon Fusion
• Limitations and Opportunities of Off-Shell Coupling Measurements
• Boosted Higgs Shapes
• Beyond Geolocating: Constraining Higher Dimensional Operators in $H\to 4\ell$ with Off-Shell Production and More
• Resolving the Higgs-Gluon Coupling with Jets
• Higgs couplings: disentangling New Physics with off-shell measurements
• Condensate dark matter stars
• The process gg->WW as a probe into the EWSB mechanism

Cited by in corpus (8)

• Vices and Virtues of Higgs EFTs at Large Energy
• What's in the Loop? The Anatomy of Double Higgs Production
• The Effective Standard Model after LHC Run I
• Matching Matters!
• Higgs couplings and Naturalness in the littlest Higgs model with T-parity at the LHC and TLEP
• On-shell interference effects in Higgs final states
• Improving Higgs coupling measurements through ZZ Fusion at the ILC
• Off-shell effects in Higgs processes at a linear collider and implications for the LHC