Complete off-shell effects in top quark pair hadroproduction with leptonic decay at next-to-leading order

Bevilacqua, G.; Czakon, M.; Hameren, A. van; Papadopoulos, Costas G.; Worek, Małgorzata

doi:10.1007/jhep02(2011)083

Cited by 174 publications

(177 citation statements)

References 117 publications

(148 reference statements)

Supporting

Mentioning

168

Contrasting

Order By: Relevance

“…As a further refinement of our result we envisage in the future to include NLO QCD corrections to the pp → W + W − bb process [66][67][68][69] to compute effects from off-shell top quarks and non-factorizable corrections to our prediction. These effects modify the total cross-section by a relative factor t /m t and α s · t /m t , respectively.…”

Section: Discussionmentioning

confidence: 99%

Top quark mass determination from the energy peaks of b-jets and B-hadrons at NLO QCD

et al. 2016

View full text Add to dashboard Cite

We analyze the energy spectra of single b-jets and B-hadrons resulting from the production and decay of top quarks within the SM at the LHC at the NLO QCD. For both hadrons and jets, we calculate the correlation of the peak of the spectrum with the top quark mass, considering the "energy peak" as an observable to determine the top quark mass. Such a method is motivated by our previous work where we argued that this approach can have reduced sensitivity to the details of the production mechanism of the top quark, whether it concerns higher-order QCD effects or new physics contributions. For a 1% jet energy scale uncertainty, the top quark mass can then be extracted using the energy peak of b-jets with an error ±(1.2(exp) + 0.6(th)) GeV. In view of the dominant jet energy scale uncertainty in the measurement using b-jets, we also investigate the extraction of the top quark mass from the energy peak of the corresponding B-hadrons which, in principle, can be measured without this uncertainty. The calculation of the B-hadron energy spectrum is carried out using fragmentation functions at NLO. The dependence on the fragmentation scale turns out to be the largest theoretical uncertainty in this extraction of top quark mass.

show abstract

Section: Discussionmentioning

confidence: 99%

Top quark mass determination from the energy peaks of b-jets and B-hadrons at NLO QCD

et al. 2016

View full text Add to dashboard Cite

show abstract

“…top-quark off-shell effects [20][21][22][23][24][25]. We should also mention the most recent calculations of this type, where off-shell effects could even be included in associated production [26,27].…”

Section: Jhep05(2016)034mentioning

confidence: 99%

NNLO QCD predictions for fully-differential top-quark pair production at the Tevatron

Czakon

Fiedler

Heymes

et al. 2016

J. High Energ. Phys.

125

View full text Add to dashboard Cite

We present a comprehensive study of differential distributions for Tevatron top-pair events at the level of stable top quarks. All calculations are performed in NNLO QCD with the help of a fully differential partonic Monte-Carlo and are exact at this order in perturbation theory. We present predictions for all kinematic distributions for which data exists. Particular attention is paid on the top-quark forward-backward asymmetry which we study in detail. We compare the NNLO results with existing approximate NNLO predictions as well as differential distributions computed with different parton distribution sets. Theory errors are significantly smaller than current experimental ones with overall agreement between theory and data.

show abstract

“…the tt production case by the recent calculation of the NLO corrections to the W + W − bb final state [57,58].…”

Section: Jhep01(2012)137mentioning

confidence: 99%

Hadronic top-quark pair-production with one jet and parton showering

Alioli

Moch

Uwer

2012

J. High Energ. Phys.

135

137

View full text Add to dashboard Cite

We present a calculation of heavy-flavor production in hadronic collisions in association with one jet matched to parton shower Monte Carlo programs at next-toleading order in perturbative QCD. Top-quark decays are included and spin correlations in the decay products are taken into account. The calculation builds on existing results for the radiative corrections to heavy-quark plus one jet production and uses the POWHEG BOX for the interface to the parton shower programs PYTHIA or HERWIG. A broad phenomenological study for the Large Hadron Collider and the Tevatron is presented. In particular we study -as one important sample application -the impact of the parton shower on the top-quark charge asymmetry.

show abstract

Complete off-shell effects in top quark pair hadroproduction with leptonic decay at next-to-leading order

Cited by 174 publications

References 117 publications

Top quark mass determination from the energy peaks of b-jets and B-hadrons at NLO QCD

Top quark mass determination from the energy peaks of b-jets and B-hadrons at NLO QCD

NNLO QCD predictions for fully-differential top-quark pair production at the Tevatron

Hadronic top-quark pair-production with one jet and parton showering

Contact Info

Product

Resources

About