Higgs boson pair production in non-linear Effective Field Theory with full mt-dependence at NLO QCD

Journal of High Energy Physics, Sep 2018

Abstract We present a calculation of the NLO QCD corrections to Higgs boson pair production within the framework of a non-linearly realised Effective Field Theory in the Higgs sector, described by the electroweak chiral Lagrangian. We analyse how the NLO corrections affect distributions in the Higgs boson pair invariant mass and the transverse momentum of one of the Higgs bosons. We find that these corrections lead to significant and non-homogeneous K-factors in certain regions of the parameter space. We also provide an analytical parametrisation for the total cross-section and the mhh distribution as a function of the anomalous Higgs couplings that includes NLO corrections. Such a parametrisation can be useful for phenomenological studies.

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Higgs boson pair production in non-linear Effective Field Theory with full mt-dependence at NLO QCD

Journal of High Energy Physics September 2018, 2018:57 | Cite as Higgs boson pair production in non-linear Effective Field Theory with full mt-dependence at NLO QCD AuthorsAuthors and affiliations G. BuchallaM. CapoziA. CelisG. HeinrichL. Scyboz Open Access Regular Article - Theoretical Physics First Online: 11 September 2018 21 Downloads Abstract We present a calculation of the NLO QCD corrections to Higgs boson pair production within the framework of a non-linearly realised Effective Field Theory in the Higgs sector, described by the electroweak chiral Lagrangian. We analyse how the NLO corrections affect distributions in the Higgs boson pair invariant mass and the transverse momentum of one of the Higgs bosons. We find that these corrections lead to significant and non-homogeneous K-factors in certain regions of the parameter space. We also provide an analytical parametrisation for the total cross-section and the mhh distribution as a function of the anomalous Higgs couplings that includes NLO corrections. Such a parametrisation can be useful for phenomenological studies. Keywords NLO Computations QCD Phenomenology  ArXiv ePrint: 1806.05162 Download to read the full article text Notes Open Access This article is distributed under the terms of the Creative Commons Attribution License (CC-BY 4.0), which permits any use, distribution and reproduction in any medium, provided the original author(s) and source are credited. References [1] ATLAS, CMS collaboration, Measurements of the Higgs boson production and decay rates and constraints on its couplings from a combined ATLAS and CMS analysis of the LHC pp collision data at \( \sqrt{s}=7 \) and 8 TeV, JHEP 08 (2016) 045 [arXiv:1606.02266] [INSPIRE]. [2] G. Brooijmans et al., Les Houches 2017: physics at TeV colliders new physics working group report, in the proceedings of the 10th Les Houches Workshop on Physics at TeV Colliders (PhysTeV 2017), June 5-23, Les Houches, France (2018), arXiv:1803.10379 [INSPIRE]. [3] W. Buchmüller and D. Wyler, Effective lagrangian analysis of new interactions and flavor conservation, Nucl. Phys. B 268 (1986) 621 [INSPIRE].ADSCrossRefGoogle Scholar [4] B. Grzadkowski, M. Iskrzynski, M. Misiak and J. Rosiek, Dimension-six terms in the standard model lagrangian, JHEP 10 (2010) 085 [arXiv:1008.4884] [INSPIRE].ADSCrossRefzbMATHGoogle Scholar [5] L. Berthier and M. Trott, Towards consistent electroweak precision data constraints in the SMEFT, JHEP 05 (2015) 024 [arXiv:1502.02570] [INSPIRE].ADSCrossRefGoogle Scholar [6] M. Ghezzi, R. Gomez-Ambrosio, G. Passarino and S. Uccirati, NLO Higgs effective field theory and κ-framework, JHEP 07 (2015) 175 [arXiv:1505.03706] [INSPIRE].ADSMathSciNetCrossRefzbMATHGoogle Scholar [7] J. de Blas et al., The global electroweak and Higgs fits in the LHC era, PoS(EPS-HEP2017)467 [arXiv:1710.05402] [INSPIRE]. [8] I. Brivio and M. Trott, Scheming in the SMEFT. . . and a reparameterization invariance!, JHEP 07 (2017) 148 [arXiv:1701.06424] [INSPIRE].ADSCrossRefGoogle Scholar [9] J. Ellis, C.W. Murphy, V. Sanz and T. You, Updated global SMEFT fit to Higgs, diboson and electroweak data, JHEP 06 (2018) 146 [arXiv:1803.03252] [INSPIRE].ADSCrossRefGoogle Scholar [10] F. Feruglio, The chiral approach to the electroweak interactions, Int. J. Mod. Phys. A 8 (1993) 4937 [hep-ph/9301281] [INSPIRE]. [11] J. Bagger et al., The strongly interacting W W system: gold plated modes, Phys. Rev. D 49 (1994) 1246 [hep-ph/9306256] [INSPIRE]. [12] V. Koulovassilopoulos and R.S. Chivukula, The phenomenology of a nonstandard Higgs boson in W(L) W(L) scattering, Phys. Rev. D 50 (1994) 3218 [hep-ph/9312317] [INSPIRE]. [13] C.P. Burgess, J. Matias and M. Pospelov, A Higgs or not a Higgs? What to do if you discover a new scalar particle, Int. J. Mod. Phys. A 17 (2002) 1841 [hep-ph/9912459] [INSPIRE]. [14] L.-M. Wang and Q. Wang, Electroweak chiral Lagrangian for neutral Higgs boson, Chin. Phys. Lett. 25 (2008) 1984 [hep-ph/0605104] [INSPIRE]. [15] B. Grinstein and M. Trott, A Higgs-Higgs bound state due to new physics at a TeV, Phys. Rev. D 76 (2007) 073002 [arXiv:0704.1505] [INSPIRE]. [16] R. Contino et al., Strong Double Higgs Production at the LHC, JHEP 05 (2010) 089 [arXiv:1002.1011] [INSPIRE].ADSCrossRefGoogle Scholar [17] R. Contino, The Higgs as a Composite Nambu-Goldstone Boson, in the proceedings of the Theoretical Advanced Study Institute in Elementary Particle Physics (TASI09), June 1-26, Boulder, Colorado, U.S.A. (2011), arXiv:1005.4269 [INSPIRE]. [18] R. Alonso et al., The effective chiral lagrangian for a light dynamical “Higgs Particle”, Phys. Lett. B 722 (2013) 330 [Erratum ibid. B 726 (2013) 926] [arXiv:1212.3305] [INSPIRE]. [19] G. Buchalla, O. Catà and C. Krause, Complete electroweak chiral lagrangian with a light Higgs at NLO, Nucl. Phys. B 880 (2014) 552 [Erratum ibid. B 913 (2016) 475] [arXiv:1307.5017] [INSPIRE]. [20] R.L. Delgado, A (...truncated)


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G. Buchalla, M. Capozi, A. Celis, G. Heinrich, L. Scyboz. Higgs boson pair production in non-linear Effective Field Theory with full mt-dependence at NLO QCD, Journal of High Energy Physics, 2018, pp. 57, Volume 2018, Issue 9, DOI: 10.1007/JHEP09(2018)057