Modeling BSM effects on the Higgs transverse-momentum spectrum in an EFT approach

Abstract

Abstract:We consider the transverse-momentum distribution of a Higgs boson produced through gluon fusion in hadron collisions. At small transverse momenta, the large logarithmic terms are resummed up to next-to-leading-logarithmic (NLL) accuracy. The resummed computation is consistently matched to the next-to-leading-order (NLO) result valid at large transverse momenta. The ensuing Standard Model prediction is supplemented by possible new-physics effects parametrised through three dimension-six operators related to the modification of the top and bottom Yukawa couplings, and to the inclusion of a point-like Higgs-gluon coupling, respectively. We present resummed transverse-momentum spectra including the effect of these operators at NLL+NLO accuracy and study their impact on the shape of the distribution. We find that such modifications, while affecting the total rate within the current uncertainties, can lead to significant distortions of the spectrum. The proper parametrization of such effects becomes increasingly important for experimental analyses in Run II of the LHC.

Light-quarks Yukawa couplings and new physics in exclusive high- pT Higgs boson+jet and Higgs boson + Cohen1, Bar‐Shalom2, Eilam3 et al. 2018Phys. Rev. D181160View full textAdd to dashboardCite

“…Indeed, a significant effort has been dedicated in recent years, from the theory side, towards understanding and reducing the uncertainties pertaining to the Higgs þ jet production cross section at the LHC [7,8,[10][11][12][13][20][21][22], with special attention given to higher transverse momentum of the Higgs, where NP effects are expected to become more apparent. In particular, the high-p T Higgs spectrum in pp → h þ jðj b Þ can be sensitive to various well motivated NP scenarios, such as supersymmetry [23][24][25][26], heavy top-partners [27], higher dimensional effective operators [28][29][30][31][32] and NP in Higgs-top quark and Higgs-gluon interactions in the so-called "kappa-framework", where one assumes that the hgg and htt interactions are scaled by some factor with respect to the SM [33][34][35][36].…”

Top-Bottom Interference Effects in Higgs Plus Jet Production at the LHC

“…A case in point is the Higgs boson transverse momentum distribution, whose theoretical understanding is important to properly describe the kinematics of the Higgs decay products but may also give us access to physics beyond the standard model [4].…”

Resolving gluon fusion loops at current and future hadron colliders

“…[12,13] for recent studies. However, in the last few years several other proposals have been put forward, including boosted Higgs production [3,4,[14][15][16][17][18][19] (see also refs. [20][21][22] for previous studies where the Higgs transverse momentum distribution was exploited as a handle on new physics), off-shell Higgs production [23][24][25], and double Higgs production in gluon fusion [26,27].…”