Vector boson production at hadron colliders: transverse-momentum resummation and leptonic decay

Catani, Stefano; Florian, Daniel de; Ferrera, Giancarlo; Grazzini, Massimiliano

doi:10.1007/jhep12(2015)047

Cited by 106 publications

(153 citation statements)

References 162 publications

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“…The 7 TeV measurements have also been compared to the fixed order NNLO inclusive Z prediction of FEWZ [14], to a matched NLO+NNLL resummed computation [29], and to a NNLL+NNLO computation including leptonic decay [30].…”

Section: Jhep11(2016)094mentioning

confidence: 99%

NNLO QCD corrections for Drell-Yan p ZT and $$ {\phi}_{{}^{\eta}}^{\ast } $$ observables at the LHC

Ridder

Gehrmann

Glover

et al. 2016

J. High Energ. Phys.

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Drell-Yan lepton pairs with finite transverse momentum are produced when the vector boson recoils against (multiple) parton emission(s), and is determined by QCD dynamics. At small transverse momentum, the fixed order predictions break down due to the emergence of large logarithmic contributions. This region can be studied via the p Z T distribution constructed from the energies of the leptons, or through the φ * η distribution that relies on the directions of the leptons. For sufficiently small transverse momentum, the φ * η observable can be measured experimentally with better resolution. We study the small p Z T and φ * η distributions up to next-to-next-to-leading order (NNLO) in perturbative QCD. We compute the φ * η distributions for the fully inclusive production of lepton pairs via Z/γ * to NNLO and normalise them to the NNLO cross sections for inclusive Z/γ * production. We compare our predictions with the φ * η distribution measured by the ATLAS collaboration during LHC operation at 8 TeV. We find that at moderate to large values of φ * η , the NNLO effects are positive and lead to a substantial improvement in the theory-data comparison compared to next-to-leading order (NLO). At small values of p Z T and φ * η , the known large logarithmic enhancements emerge through and we identify the region where resummation is needed. We find an approximate relationship between the values of p Z T and φ * η where the large logarithms emerge and find perturbative consistency between the two observables.

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Section: Jhep11(2016)094mentioning

confidence: 99%

NNLO QCD corrections for Drell-Yan p ZT and $$ {\phi}_{{}^{\eta}}^{\ast } $$ observables at the LHC

Ridder

Gehrmann

Glover

et al. 2016

J. High Energ. Phys.

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“…The approximated inclusion of multiple parton initial state radiation (ISR) to all perturbative orders is necessary to obtain a sensible description of the lepton-pair transverse momentum distribution and is known up to next-to-next-to-leading logarithmic (NNLL) QCD accuracy [39,40] with respect to the L QCD ≡ log(p V ⊥ /m V ) factor, where p V ⊥ is the lepton-pair transverse momentum and m V is the relevant gauge boson mass (V = W, Z); these corrections have been implemented in simulation codes like ResBos [41] or DYqT/DYRes [42,43]. The inclusion of multiple photon radiation effects is necessary to achieve an accurate description of the leptonic observables, it is known up to leading-logarithmic (LL) accuracy with respect to the L QED ≡ log(ŝ/m 2 l ) enhancement factor, whereŝ is the partonic Mandelstam variable and m l is the final state lepton mass; these corrections are available in codes like Photos or Horace-3.1 [44][45][46][47][48].…”

Section: Existing Calculations and Simulation Codesmentioning

confidence: 99%

Precision measurement of the W -boson mass: Theoretical contributions and uncertainties

et al. 2017

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Abstract:We perform a comprehensive analysis of electroweak, QED and mixed QCDelectroweak corrections underlying the precise measurement of the W -boson mass M W at hadron colliders. By applying a template fitting technique, we detail the impact on M W of next-to-leading order electroweak and QCD corrections, multiple photon emission, lepton pair radiation and factorizable QCD-electroweak contributions. As a by-product, we provide an up-to-date estimate of the main theoretical uncertainties of perturbative nature. Our results can serve as a guideline for the assessment of the theoretical systematics at the Tevatron and LHC and allow a more robust precision measurement of the W -boson mass at hadron colliders.

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“…Of course, in order to do so and due to the different multiplicities involved, an appropriate projection to Born-like kinematics is needed; for this purpose we make use of the q T -recoil procedure defined in ref. [49]. Following this prescription, the momenta of the Higgs bosons remain unchanged, and the new initial-state parton momenta are obtained by absorbing the recoil due to the additional radiation.…”

Section: Approximations For Top-mass Effects At Nnlomentioning

confidence: 99%

Higgs boson pair production at NNLO with top quark mass effects

Grazzini

Heinrich

Jones

et al. 2018

J. High Energ. Phys.

166

129

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We consider QCD radiative corrections to Higgs boson pair production through gluon fusion in proton collisions. We combine the exact next-to-leading order (NLO) contribution, which features two-loop virtual amplitudes with the full dependence on the top quark mass M t , with the next-to-next-to-leading order (NNLO) corrections computed in the large-M t approximation. The latter are improved with different reweighting techniques in order to account for finite-M t effects beyond NLO. Our reference NNLO result is obtained by combining one-loop double-real corrections with full M t dependence with suitably reweighted real-virtual and double-virtual contributions evaluated in the large-M t approximation. We present predictions for inclusive cross sections in pp collisions at √ s = 13, 14, 27 and 100 TeV and we discuss their uncertainties due to missing M t effects. Our approximated NNLO corrections increase the NLO result by an amount ranging from +12% at √ s = 13 TeV to +7% at √ s = 100 TeV, and the residual uncertainty of the inclusive cross section from missing M t effects is estimated to be at the few percent level. Our calculation is fully differential in the Higgs boson pair and the associated jet activity: we also present predictions for various differential distributions at √ s = 14 and 100 TeV, and discuss the size of the missing M t effects, which can be larger, especially in the tails of certain observables. Our results represent the most advanced perturbative prediction available to date for this process.

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Vector boson production at hadron colliders: transverse-momentum resummation and leptonic decay

Cited by 106 publications

References 162 publications

NNLO QCD corrections for Drell-Yan p ZT and $$ {\phi}_{{}^{\eta}}^{\ast } $$ observables at the LHC

NNLO QCD corrections for Drell-Yan p ZT and $$ {\phi}_{{}^{\eta}}^{\ast } $$ observables at the LHC

Precision measurement of the W -boson mass: Theoretical contributions and uncertainties

Higgs boson pair production at NNLO with top quark mass effects

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