Higgs production in association with a top-antitop pair in the Standard Model Effective Field Theory at NLO in QCD

A bstractWe present the results of the computation of the next-to-leading order QCD corrections to the production cross section of a Higgs boson in association with a top-antitop pair at the LHC, including the three relevant dimension-six operators (Otφ, OφG, OtG) of the standard model effective field theory. These operators also contribute to the production of Higgs bosons in loop-induced processes at the LHC, such as inclusive Higgs, Hj and HH production, and modify the Higgs decay branching ratios for which we also provide predictions. We perform a detailed study of the cross sections and their uncertainties at the total as well as differential level and of the structure of the effective field theory at NLO including renormalisation group effects. Finally, we show how the combination of information coming from measurements of these production processes will allow to constrain the three operators at the current and future LHC runs. Our results lead to a significant improvement of the accuracy and precision of the deviations expected from higher-dimensional operators in the SM in both the top-quark and the Higgs-boson sectors and provide a necessary ingredient for performing a global EFT fit to the LHC data at NLO accuracy.

[1]  Jun Gao,et al.  Next-to-leading order QCD corrections to tZ associated production via the flavor-changing neutral-current couplings at hadron colliders , 2011 .

[2]  S. Love,et al.  Low-energy manifestations of a new interactions scale: Operator analysis , 1986 .

[3]  M. Trott,et al.  Towards consistent Electroweak Precision Data constraints in the SMEFT , 2015, Journal of High Energy Physics.

[4]  Q. Cao,et al.  Resolving the degeneracy in single Higgs production with Higgs pair production , 2015, 1508.06512.

[5]  S. Willenbrock,et al.  Effective field theory for nonstandard top quark couplings , 2011, 1104.3122.

[6]  Adam Martin,et al.  Probing top-partners in Higgs+jets , 2013, 1308.4771.

[7]  M. M. Najafabadi,et al.  Exploring the anomalous Higgs-top couplings , 2014, 1409.6553.

[8]  Li Lin Yang,et al.  Associated production of a top pair and a Higgs boson beyond NLO , 2015, 1510.01914.

[9]  J. T. Childers,et al.  Measurements of Higgs boson production and couplings in the four-lepton channel in pp collisions at center-of-mass energies of 7 and 8 TeV with the ATLAS detector , 2014, 1408.5191.

[10]  M. Spannowsky,et al.  Measuring the signal strength in ttH with H->bb , 2015, 1510.08468.

[11]  Liam Moore,et al.  Constraining top quark effective theory in the LHC Run II era , 2015, 1512.03360.

[12]  M. Vos,et al.  Constraints on four-fermion interactions from the $$t\bar{t}$$tt¯ charge asymmetry at hadron colliders , 2015, 1512.07542.

[13]  M. Trott,et al.  Higgs Decay to Two Photons at One Loop in the Standard Model Effective Field Theory. , 2015, Physical review letters.

[14]  Ralph Edezhath.  Dimension-6 Operator Constraints from Boosted VBF Higgs , 2015, 1501.00992.

[15]  G. Passarino.  NLO Inspired Effective Lagrangians for Higgs Physics , 2012, 1209.5538.

[16]  L Reina,et al.  Next-to-leading order results for tt macro h production at the Tevatron. , 2001, Physical review letters.

[17]  Q. Cao,et al.  Probing Higgs width and top quark Yukawa coupling from tt¯H and tt¯tt¯ productions , 2016, 1602.01934.

[18]  T. Plehn,et al.  Mass effects in the Higgs-gluon coupling: boosted vs. off-shell production , 2014, 1410.5806.

[19]  F. Taylor,et al.  Search for H → γγ produced in association with top quarks and constraints on the Yukawa coupling between the top quark and the Higgs boson using data taken at 7 TeV and 8 TeV with the ATLAS detector , 2014 .

[20]  C. Jeske.  Evidence for the Higgs-boson Yukawa coupling to tau leptons with the ATLAS detector , 2015 .

[21]  C. Grojean,et al.  Comments on the validity of the Effective Field Theory approach to physics beyond the Standard Model , 2016 .

[22]  K. Mawatari,et al.  Higgs production in association with a single top quark at the LHC , 2015, The European physical journal. C, Particles and fields.

[23]  M. Gigg,et al.  Herwig++ physics and manual , 2008, 0803.0883.

[24]  Paul Koerber,et al.  The non-abelian Born-Infeld action through order $\alpha'{}^3$ , 2001 .

[25]  M. Schulze,et al.  Pinning down electroweak dipole operators of the top quark , 2016, 1603.08911.

[26]  S. Willenbrock,et al.  Effective field theory of precision electroweak physics at one loop , 2013, 1304.1789.

[27]  R. Frederix,et al.  The automated computation of tree-level and next-to-leading order differential cross sections, and their matching to parton shower simulations , 2014, 1405.0301.

[28]  V. Cirigliano,et al.  Constraining the top-Higgs sector of the standard model effective field theory , 2016, 1605.04311.

[29]  M. Xiao,et al.  Constraining anomalous Higgs boson couplings to the heavy flavor fermions using matrix element techniques , 2016, 1606.03107.

[30]  Chong-Sheng Li,et al.  Next-to-leading order QCD corrections to the direct top quark production via model-independent FCNC couplings at hadron colliders , 2005, hep-ph/0508016.

[31]  J. Blas,et al.  Renormalization group constraints on new top interactions from electroweak precision data , 2015, 1507.00757.

[32]  J. T. Childers,et al.  Measurement of Higgs boson production in the diphoton decay channel in pp collisions at center-of-mass energies of 7 and 8 TeV with the ATLAS detector , 2014, 1408.7084.

[33]  T. Plehn,et al.  Measuring the Top Yukawa Coupling at 100 TeV , 2015, 1507.08169.

[34]  A. Canepa,et al.  UvA-DARE (Digital Academic Repository) Search for the Standard Model Higgs boson produced in association with top quarks and decaying into bb¯ in pp collisions at √s = 8 TeV with the ATLAS detector , 2015 .

[35]  Olivier Mattelaer,et al.  Automated event generation for loop-induced processes , 2015, 1507.00020.

[36]  F. Maltoni,et al.  Associated production of the Higgs boson and a single top quark at hadron colliders , 2001 .

[37]  Jun Gao,et al.  Next-to-leading order QCD corrections to the top quark associated with $\gamma$ production via model-independent flavor-changing neutral-current couplings at hadron colliders , 2011, 1101.5346.

[38]  M. Nardecchia,et al.  An Anomalous Composite Higgs and the 750 GeV Di-Gamma Resonance , 2016 .

[39]  John Ellis,et al.  Disentangling Higgs-top couplings in associated production , 2013, 1312.5736.

[40]  V. M. Ghete,et al.  Observation of the diphoton decay of the Higgs boson and measurement of its properties , 2014, The European physical journal. C, Particles and fields.

[41]  Céline Degrande,et al.  Automatic evaluation of UV and R2 terms for beyond the Standard Model Lagrangians: A proof-of-principle , 2014, Comput. Phys. Commun..

[42]  O. B. Bylund,et al.  Probing top quark neutral couplings in the Standard Model Effective Field Theory at NLO in QCD , 2016, 1601.08193.

[43]  Kentarou Mawatari,et al.  Higgs characterisation at NLO in QCD: CP properties of the top-quark Yukawa interaction , 2014, The European physical journal. C, Particles and fields.

[44]  B. Mukhopādhyāẏa,et al.  Higher dimensional operators and the LHC Higgs data: The role of modified kinematics , 2013, 1308.4860.

[45]  S. Frixione,et al.  Weak corrections to Higgs hadroproduction in association with a top-quark pair , 2014, 1407.0823.

[46]  M. Misiak,et al.  Dimension-six terms in the Standard Model Lagrangian , 2010, 1008.4884.

[47]  Jun Gao,et al.  Next-to-leading order QCD corrections to the single top quark production via model-independent tqg flavor-changing neutral-current couplings at hadron colliders , 2009, 0910.4349.

[48]  Veronica Sanz,et al.  The effective Standard Model after LHC Run I , 2014, 1410.7703.

[49]  Andreas Papaefstathiou,et al.  Higgs boson pair production in the D = 6 extension of the SM , 2014, 1410.3471.

[50]  D. Wyler,et al.  Effective lagrangian analysis of new interactions and flavour conservation , 1986 .

[51]  Alessandro Strumia,et al.  Investigating the near-criticality of the Higgs boson , 2013, 1307.3536.

[52]  L. Orr,et al.  Associated Top Quark-Higgs Boson Production at the LHC , 2002, 1012.0341.

[53]  S. Frixione,et al.  Electroweak and QCD corrections to top-pair hadroproduction in association with heavy bosons , 2015, 1504.03446.

[54]  J. T. Childers,et al.  Evidence for the Higgs-boson Yukawa coupling to tau leptons with the ATLAS detector , 2015, Journal of High Energy Physics.

[55]  Jian Wang,et al.  Automatic computations at next-to-leading order in QCD for top-quark flavor-changing neutral processes , 2014, 1412.5594.

[56]  Peter Skands,et al.  An introduction to PYTHIA 8.2 , 2014, Comput. Phys. Commun..

[57]  S. Frixione,et al.  Matching NLO QCD computations and parton shower simulations , 2002, hep-ph/0204244.

[58]  Claude Duhr,et al.  UFO - The Universal FeynRules Output , 2011, Comput. Phys. Commun..

[59]  P. Zerwas,et al.  NLO QCD corrections to t anti-t H production in hadron collisions , 2002 .

[60]  K. Kołodziej,et al.  Probing the top-Higgs coupling through the secondary lepton distributions in the associated production of the top-quark pair and Higgs boson at the LHC , 2015, 1507.01572.

[61]  S. M. Etesami,et al.  Search for the associated production of the Higgs boson with a top quark pair in multilepton final states with the ATLAS detector , 2015, 1506.05988.

[62]  Claude Duhr,et al.  FeynRules 2.0 - A complete toolbox for tree-level phenomenology , 2013, Comput. Phys. Commun..

[63]  A. Kulesza,et al.  Soft gluon resummation for associated tt¯H$$ \mathrm{t}\overline{\mathrm{t}}\mathrm{H} $$ production at the LHC , 2016 .

[64]  Cen Zhang.  Single Top Production at Next-to-Leading Order in the Standard Model Effective Field Theory. , 2016, Physical review letters.

[65]  Chong-Sheng Li,et al.  Constraints on flavor-changing neutral-current Htq couplings from the signal of tH associated production with QCD next-to-leading order accuracy at the LHC , 2012, 1208.2902.

[66]  Christophe Grojean,et al.  Very boosted Higgs in gluon fusion , 2013, 1312.3317.

[67]  Ren-You Zhang,et al.  QCD NLO and EW NLO corrections to tt¯H production with top quark decays at hadron collider , 2014 .

[68]  D. Wackeroth,et al.  QCD corrections to associated t anti-t h production at the Tevatron , 2001 .

[69]  Tim Stelzer,et al.  Automation of next-to-leading order computations in QCD: the FKS subtraction , 2009, 0908.4272.

[70]  Frank Ferrari.  Large N and double scaling limits in two dimensions , 2002 .

[71]  F. Maltoni,et al.  Lifting degeneracies in Higgs couplings using single top production in association with a Higgs boson , 2012, 1211.3736.

[72]  S. Fichet,et al.  A Bayesian view of the Higgs sector with higher dimensional operators , 2013, 1304.3369.

[73]  Liam Moore,et al.  Global fit of top quark effective theory to data , 2015, 1506.08845.

[74]  S. Willenbrock,et al.  Constraints on nonstandard top quark couplings , 2012, 1201.6670.

[75]  S. Willenbrock,et al.  Constraints on electroweak effective operators at one loop , 2013, 1306.3380.

[76]  C. Collaboration,et al.  Measurement of Higgs boson production and properties in the WW decay channel with leptonic final states , 2013, 1312.1129.

[77]  V. M. Ghete,et al.  Evidence for the 125 GeV Higgs boson decaying to a pair of τ leptons , 2014 .

[78]  R. Pittau,et al.  Scalar and pseudoscalar Higgs production in association with a top–antitop pair , 2011, 1104.5613.

[79]  Z. Trocsanyi,et al.  Standard Model Higgs boson production in association with a top anti-top pair at NLO with parton showering , 2011, 1108.0387.

[80]  V. Sanz,et al.  Limits on anomalous couplings of the Higgs boson to electroweak gauge bosons from LEP and the LHC , 2012, 1211.1320.

[81]  M. Buckley,et al.  Boosting the Direct CP Measurement of the Higgs-Top Coupling. , 2015, Physical review letters.

[82]  Search for tt̄H Production in the H → bb̅ Decay Channel , 2021 .

[83]  Y. Nagai,et al.  Observation and measurement of Higgs boson decays to WW$^*$ with the ATLAS detector , 2015 .

[84]  Cen Zhang.  Automating Predictions for Standard Model Effective Field Theory in MadGraph5_aMC@NLO , 2016, 1601.03994.

[85]  M. Trott,et al.  On one-loop corrections in the standard model effective field theory; the Γ(h → γγ) case , 2015, Journal of High Energy Physics.

[86]  J. Streicher,et al.  NLO QCD corrections to Higgs pair production including dimension-6 operators , 2015, 1504.06577.

[87]  M. Trott,et al.  Consistent constraints on the Standard Model Effective Field Theory , 2015, 1508.05060.

[88]  Rikkert Frederix,et al.  Automation of one-loop QCD computations , 2011, 1103.0621.

[89]  Tilman Plehn,et al.  The gauge-Higgs legacy of the LHC Run I , 2016 .

[90]  Alan D. Martin,et al.  Parton distributions in the LHC era: MMHT 2014 PDFs , 2014, The European physical journal. C, Particles and fields.

[91]  D. Wackeroth,et al.  Higgs boson production in association with top quarks in the POWHEG BOX , 2015, 1501.04498.

[92]  T. Corbett,et al.  Robust Determination of the Higgs Couplings: Power to the Data , 2012, 1211.4580.

[93]  T. Plehn,et al.  The Higgs legacy of the LHC Run I , 2015, 1505.05516.

[94]  Cen Zhang,et al.  Effective field theory approach to top-quark decay at next-to-leading order in QCD , 2014, 1404.1264.

[95]  C. Grojean,et al.  Scaling and tuning of EW and Higgs observables , 2013, 1312.2928.

[96]  P. Zerwas,et al.  Higgs radiation off top quarks at the Tevatron and the LHC. , 2001, Physical Review Letters.

[97]  S. Willenbrock,et al.  Effective-field-theory approach to top-quark production and decay , 2010, 1008.3869.

[98]  Michael Trott,et al.  Renormalization group evolution of the Standard Model dimension six operators II: Yukawa dependence , 2013, Journal of High Energy Physics.

[99]  R. Frederix,et al.  Automatic spin-entangled decays of heavy resonances in Monte Carlo simulations , 2012, 1212.3460.

[100]  Michael Trott,et al.  Renormalization group evolution of the standard model dimension six operators. I: formalism and λ dependence , 2013, Journal of High Energy Physics.

[101]  R. Contino,et al.  Effective field theory analysis of double Higgs boson production via gluon fusion , 2015 .

[102]  B. Gripaios,et al.  An operator basis for the Standard Model with an added scalar singlet , 2016, 1604.07365.

[103]  Michael Trott,et al.  Renormalization group evolution of the Standard Model dimension six operators III: gauge coupling dependence and phenomenology , 2013, Journal of High Energy Physics.

[104]  A. Denner,et al.  NLO QCD corrections to off-shell top-antitop production with leptonic decays in association with a Higgs boson at the LHC , 2015, Journal of High Energy Physics.

[105]  V. M. Ghete,et al.  Measurement of the properties of a Higgs boson in the four-lepton final state , 2014 .

[106]  M. Dorigo,et al.  Determination of the branching fractions of BS0 → DS∓K∓ and B0 → DS−K+ , 2015, Journal of High Energy Physics.

[107]  A. Kulesza,et al.  Soft gluon resummation for associated t(cid:22)tH production at the LHC , 2016 .

[108]  T. Corbett,et al.  Constraining anomalous Higgs boson interactions , 2012, 1207.1344.

[109]  R. Gauld,et al.  One-loop corrections to h → bb¯$$ b\overline{b} $$ and h → ττ¯$$ \tau \overline{\tau} $$ decays in the Standard Model dimension-6 EFT: four-fermion operators and the large-mt limit , 2015, 1512.02508.

[110]  A. Wulzer,et al.  Anomalous couplings in double Higgs production , 2012, 1205.5444.

[111]  Christophe Grojean,et al.  On the validity of the effective field theory approach to SM precision tests , 2016, Journal of High Energy Physics.

[112]  C. Grojean,et al.  Probing top-Higgs non-standard interactions at the LHC , 2012, 1205.1065.

[113]  D. B. Franzosi,et al.  Probing the top-quark chromomagnetic dipole moment at next-to-leading order in QCD , 2015, 1503.08841.

[114]  M. Schulze,et al.  Probing top-Z dipole moments at the LHC and ILC , 2015, 1501.05939.

[115]  G. Passarino,et al.  NLO Higgs effective field theory and κ-framework , 2015, 1505.03706.

[116]  G. Passarino,et al.  The Standard Model Effective Field Theory and Next to Leading Order , 2016, 1610.08356.

[117]  F. Maltoni,et al.  Top-quark decay into Higgs boson and a light quark at next-to-leading order in QCD , 2013, 1305.7386.

[118]  Gauthier Durieux,et al.  Global approach to top-quark flavor-changing interactions , 2014, 1412.7166.

[119]  A. Chapelain.  tt Charge asymmetry at hadron colliders , 2013, 1310.5030.