Transverse-momentum resummation: Higgs boson production at the Tevatron and the LHC

By D. Florian, G. Ferrera, M. Grazzini, D. Tommasini. 2011

272 citations recorded by the source corpus.

A bstractWe consider the transverse-momentum (qT ) distribution of Standard Model Higgs bosons produced by gluon fusion in hadron collisions. At small qT (qT ≪ mH , mH being the mass of the Higgs boson), we resum the logarithmically-enhanced contributions due to multiple soft-gluon emission to all order in QCD perturbation theory. At interme-diate and large values of qT (qT < mH), we consistently combine resummation with the known fixed-order results. We use the most advanced perturbative information that is available at present: next-to-next-to-leading logarithmic resummation combined with the next-to-leading fixed-order calculation. We extend previous results including exactly all the perturbative terms up to order αS in our computation and, after integration over qT, we recover the known next-to-next-to-leading order result for the total cross section. We present numerical results at the Tevatron and the LHC, together with an estimate of the corresponding uncertainties. Our calculation is implemented in an updated version of the numerical code HqT.

Subfields: Nuclear and High Energy Physics

View Paper: https://www.semanticscholar.org/paper/7894929b500713708014fdaf444154c044aa3902

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In Nuclear and High Energy Physics

Citations in the corpus

Measurements of the properties of the Higgs-like boson in the four lepton decay channel with the ATLAS detector using 25 fb$^{-1}$ of proton-proton collision data (2013, methodology): “The POWHEG next-to-leading-order (NLO) generator is chosen as reference here, since it provides to date the best prediction for a Standard Model Higgs pT spectrum, being in very good agreement with the next-to-next-to-leading logarithmic (NNLL)+NLO prediction by HQT [19, 30].”
Heavy-quark mass effects in Higgs boson production at the LHC (2013, methodology): “5, and compare it with the spectrum computed in the large-mt limit for Q = mH/4, mH with the numerical program HqT.”
NLO Higgs boson production plus one and two jets using the POWHEG BOX, MadGraph4 and MCFM (2012, result): “With this setup, the resulting Higgs boson pT distribution is in remarkable agreement with the output of the HqT program [47, 48, 49, 50].”
Observation of a new particle in the search for the Standard Model Higgs boson with the ATLAS detector at the LHC (2012, unknown): “The transverse momentum, p T , spectrum of the Higgs boson in the ggF process follows the HqT calculation [36], which includes QCD corrections at NLO and QCD soft-gluon re-summations up to NNLL; the e ﬀ ects of ﬁnite quark masses are also taken into account [37].”
Inadequacy of zero-width approximation for a light Higgs boson signal (2012, background): “ motivated the calculation of next-to-next-to-leading order (NNLO) QCD corrections in the heavy-top limit [15–17] enhanced by soft-gluon resummation at next-tonext-to-leading logarithmic (NNLL) level [18, 19] and beyond [20–25]. Fully diﬀerential 1All bounds and exclusion limits are at 95% C.L. – 1 ”
Search for the standard model Higgs boson decaying into two photons in $pp$ collisions at $\sqrt{s}=7$ TeV (2012, methodology): “For the dominant gluon-gluon fusion process, the Higgs boson transverse momentum spectrum has been reweighted to the next-tonext-to-leading logarithmic (NNLL) + NLO distribution computed by the HqT program [55– 57].”
Measurements of Higgs boson production and couplings in diboson final states with the ATLAS detector at the LHC (2013, methodology): “Despite the small branching ratio, this channel provides good sensitivity to Higgs boson studies, e.g. to the coupling to Z bosons, mainly because of the large signal-to-background ratio.”