Abstract
We compute for the first time the so-called complete NLO corrections to top-quark pair production with one and two isolated photons in the di-lepton top-quark decay channel. The Narrow Width Approximation is used for the modeling of unstable top quarks and W bosons. Higher-order QCD and EW effects as well as photon bremsstrahlung are consistently included at all stages: in production and top-quark decays. We present results at the integrated and differential fiducial cross-section level for both processes for the LHC Run II center-of-mass energy of \( \sqrt{s} \) = 13 TeV. In addition, we investigate the scale choice in photonic observables. Finally, the individual size of each subleading contribution is discussed in detail and the origin of the main subleading corrections is scrutinised. For the latter case, alternative calculations are performed in which the subleading NLO corrections are included only in the production of \( t\overline{t}\gamma \) and \( t\overline{t}\gamma \gamma \).
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F. Maltoni, D. Pagani and I. Tsinikos, Associated production of a top-quark pair with vector bosons at NLO in QCD: impact on \( t\overline{t}H \) searches at the LHC, JHEP 02 (2016) 113 [arXiv:1507.05640] [INSPIRE].
K. Agashe et al., Report of the Topical Group on Top quark physics and heavy flavor production for Snowmass 2021, arXiv:2209.11267 [INSPIRE].
K. Melnikov, M. Schulze and A. Scharf, QCD corrections to top quark pair production in association with a photon at hadron colliders, Phys. Rev. D 83 (2011) 074013 [arXiv:1102.1967] [INSPIRE].
G. Bevilacqua et al., Off-shell vs on-shell modelling of top quarks in photon associated production, JHEP 03 (2020) 154 [arXiv:1912.09999] [INSPIRE].
U. Baur, M. Buice and L.H. Orr, Direct measurement of the top quark charge at hadron colliders, Phys. Rev. D 64 (2001) 094019 [hep-ph/0106341] [INSPIRE].
D0 collaboration, Measurement of the Electric Charge of the Top Quark in \( t\overline{t} \) Events, Phys. Rev. D 90 (2014) 051101 [Erratum ibid. 90 (2014) 079904] [arXiv:1407.4837] [INSPIRE].
ATLAS collaboration, Measurement of the top quark charge in pp collisions at \( \sqrt{s} \) = 7 TeV with the ATLAS detector, JHEP 11 (2013) 031 [arXiv:1307.4568] [INSPIRE].
U. Baur, A. Juste, L.H. Orr and D. Rainwater, Probing electroweak top quark couplings at hadron colliders, Phys. Rev. D 71 (2005) 054013 [hep-ph/0412021] [INSPIRE].
A.O. Bouzas and F. Larios, Electromagnetic dipole moments of the Top quark, Phys. Rev. D 87 (2013) 074015 [arXiv:1212.6575] [INSPIRE].
R. Röntsch and M. Schulze, Probing top-Z dipole moments at the LHC and ILC, JHEP 08 (2015) 044 [arXiv:1501.05939] [INSPIRE].
M. Schulze and Y. Soreq, Pinning down electroweak dipole operators of the top quark, Eur. Phys. J. C 76 (2016) 466 [arXiv:1603.08911] [INSPIRE].
O. Bessidskaia Bylund et al., Probing top quark neutral couplings in the Standard Model Effective Field Theory at NLO in QCD, JHEP 05 (2016) 052 [arXiv:1601.08193] [INSPIRE].
J.A. Aguilar-Saavedra, E. Álvarez, A. Juste and F. Rubbo, Shedding light on the \( t\overline{t} \) asymmetry: the photon handle, JHEP 04 (2014) 188 [arXiv:1402.3598] [INSPIRE].
J.A. Aguilar-Saavedra, Single lepton charge asymmetries in \( t\overline{t} \) and \( t\overline{t}\gamma \) production at the LHC, Eur. Phys. J. C 78 (2018) 434 [arXiv:1802.05721] [INSPIRE].
J. Bergner and M. Schulze, The top quark charge asymmetry in \( t\overline{t}\gamma \) production at the LHC, Eur. Phys. J. C 79 (2019) 189 [arXiv:1812.10535] [INSPIRE].
D. Pagani, H.-S. Shao, I. Tsinikos and M. Zaro, Automated EW corrections with isolated photons: \( t\overline{t}\gamma \), \( t\overline{t}\gamma \gamma \) and tγj as case studies, JHEP 09 (2021) 155 [arXiv:2106.02059] [INSPIRE].
R. Barcelo, A. Carmona, M. Masip and J. Santiago, Stealth gluons at hadron colliders, Phys. Lett. B 707 (2012) 88 [arXiv:1106.4054] [INSPIRE].
G. Marques Tavares and M. Schmaltz, Explaining the \( t\overline{t} \) asymmetry with a light axigluon, Phys. Rev. D 84 (2011) 054008 [arXiv:1107.0978] [INSPIRE].
E. Álvarez, L. Da Rold, J.I.S. Vietto and A. Szynkman, Phenomenology of a light gluon resonance in top-physics at Tevatron and LHC, JHEP 09 (2011) 007 [arXiv:1107.1473] [INSPIRE].
J.A. Aguilar-Saavedra and M. Perez-Victoria, Shaping the top asymmetry, Phys. Lett. B 705 (2011) 228 [arXiv:1107.2120] [INSPIRE].
E. Álvarez, E. Coluccio Leskow, J. Drobnak and J.F. Kamenik, Leptonic Monotops at LHC, Phys. Rev. D 89 (2014) 014016 [arXiv:1310.7600] [INSPIRE].
D. Stremmer and M. Worek, Associated production of a top-quark pair with two isolated photons at the LHC through NLO in QCD, JHEP 08 (2023) 179 [arXiv:2306.16968] [INSPIRE].
CDF collaboration, Evidence for \( t\overline{t}\gamma \) Production and Measurement of \( {\sigma}_t\overline{t}\gamma /{\sigma}_t\overline{t} \), Phys. Rev. D 84 (2011) 031104 [arXiv:1106.3970] [INSPIRE].
ATLAS collaboration, Observation of top-quark pair production in association with a photon and measurement of the \( t\overline{t}\gamma \) production cross section in pp collisions at \( \sqrt{s} \) = 7 TeV using the ATLAS detector, Phys. Rev. D 91 (2015) 072007 [arXiv:1502.00586] [INSPIRE].
ATLAS collaboration, Measurement of the \( t\overline{t}\gamma \) production cross section in proton-proton collisions at \( \sqrt{s} \) = 8 TeV with the ATLAS detector, JHEP 11 (2017) 086 [arXiv:1706.03046] [INSPIRE].
CMS collaboration, Measurement of the semileptonic \( t\overline{t}\gamma \) production cross section in pp collisions at \( \sqrt{s} \) = 8 TeV, JHEP 10 (2017) 006 [arXiv:1706.08128] [INSPIRE].
CMS collaboration, Measurement of the inclusive and differential \( t\overline{t}\gamma \) cross sections in the single-lepton channel and EFT interpretation at \( \sqrt{s} \) = 13 TeV, JHEP 12 (2021) 180 [arXiv:2107.01508] [INSPIRE].
ATLAS collaboration, Measurements of inclusive and differential fiducial cross-sections of \( t\overline{t}\gamma \) production in leptonic final states at \( \sqrt{s} \) = 13 TeV in ATLAS, Eur. Phys. J. C 79 (2019) 382 [arXiv:1812.01697] [INSPIRE].
ATLAS collaboration, Measurements of inclusive and differential cross-sections of combined \( t\overline{t}\gamma \) and tWγ production in the eμ channel at 13 TeV with the ATLAS detector, JHEP 09 (2020) 049 [arXiv:2007.06946] [INSPIRE].
CMS collaboration, Measurement of the inclusive and differential \( t\overline{t}\gamma \) cross sections in the dilepton channel and effective field theory interpretation in proton-proton collisions at \( \sqrt{s} \) = 13 TeV, JHEP 05 (2022) 091 [arXiv:2201.07301] [INSPIRE].
ATLAS collaboration, Measurement of the charge asymmetry in top-quark pair production in association with a photon with the ATLAS experiment, Phys. Lett. B 843 (2023) 137848 [arXiv:2212.10552] [INSPIRE].
P.-F. Duan et al., QCD corrections to associated production of \( t\overline{t}\gamma \) at hadron colliders, Phys. Rev. D 80 (2009) 014022 [arXiv:0907.1324] [INSPIRE].
P.-F. Duan et al., Next-to-leading order QCD corrections to \( t\overline{t}\gamma \) production at the 7 TeV LHC, Chin. Phys. Lett. 28 (2011) 111401 [arXiv:1110.2315] [INSPIRE].
P.-F. Duan et al., Electroweak corrections to top quark pair production in association with a hard photon at hadron colliders, Phys. Lett. B 766 (2017) 102 [arXiv:1612.00248] [INSPIRE].
N. Kidonakis and A. Tonero, Higher-order corrections in \( t\overline{t}\gamma \) cross sections, Phys. Rev. D 107 (2023) 034013 [arXiv:2212.00096] [INSPIRE].
A. Kardos and Z. Trócsányi, Hadroproduction of \( t\overline{t} \) pair in association with an isolated photon at NLO accuracy matched with parton shower, JHEP 05 (2015) 090 [arXiv:1406.2324] [INSPIRE].
G. Bevilacqua et al., Hard Photons in Hadroproduction of Top Quarks with Realistic Final States, JHEP 10 (2018) 158 [arXiv:1803.09916] [INSPIRE].
J. Alwall et al., The automated computation of tree-level and next-to-leading order differential cross sections, and their matching to parton shower simulations, JHEP 07 (2014) 079 [arXiv:1405.0301] [INSPIRE].
A. Kardos and Z. Trócsányi, Hadroproduction of \( t\overline{t} \) pair with two isolated photons with PowHel, Nucl. Phys. B 897 (2015) 717 [arXiv:1408.0278] [INSPIRE].
H. van Deurzen et al., Spin Polarisation of \( t\overline{t}\gamma \gamma \) production at NLO+PS with GoSam interfaced to MadGraph5_aMC@NLO, Eur. Phys. J. C 76 (2016) 221 [arXiv:1509.02077] [INSPIRE].
A. Denner, S. Dittmaier, M. Roth and D. Wackeroth, Predictions for all processes e+e− → 4 fermions +γ, Nucl. Phys. B 560 (1999) 33 [hep-ph/9904472] [INSPIRE].
A. Denner, S. Dittmaier, M. Roth and L.H. Wieders, Electroweak corrections to charged-current e+e− → 4 fermion processes: Technical details and further results, Nucl. Phys. B 724 (2005) 247 [hep-ph/0505042] [INSPIRE].
K. Melnikov and M. Schulze, NLO QCD corrections to top quark pair production and decay at hadron colliders, JHEP 08 (2009) 049 [arXiv:0907.3090] [INSPIRE].
K. Melnikov, A. Scharf and M. Schulze, Top quark pair production in association with a jet: QCD corrections and jet radiation in top quark decays, Phys. Rev. D 85 (2012) 054002 [arXiv:1111.4991] [INSPIRE].
J.M. Campbell and R.K. Ellis, Top-Quark Processes at NLO in Production and Decay, J. Phys. G 42 (2015) 015005 [arXiv:1204.1513] [INSPIRE].
A. Behring et al., Higher order corrections to spin correlations in top quark pair production at the LHC, Phys. Rev. Lett. 123 (2019) 082001 [arXiv:1901.05407] [INSPIRE].
M. Czakon, A. Mitov and R. Poncelet, NNLO QCD corrections to leptonic observables in top-quark pair production and decay, JHEP 05 (2021) 212 [arXiv:2008.11133] [INSPIRE].
R.V. Harlander, S.Y. Klein and M. Lipp, FeynGame, Comput. Phys. Commun. 256 (2020) 107465 [arXiv:2003.00896] [INSPIRE].
R. Frederix, D. Pagani and M. Zaro, Large NLO corrections in \( t\overline{t}{W}^{\pm } \) and \( t\overline{t}t\overline{t} \) hadroproduction from supposedly subleading EW contributions, JHEP 02 (2018) 031 [arXiv:1711.02116] [INSPIRE].
R. Frederix et al., The automation of next-to-leading order electroweak calculations, JHEP 11 (2018) 085 [Erratum ibid. 11 (2021) 085] [arXiv:1804.10017] [INSPIRE].
A. Denner and M. Pellen, NLO electroweak corrections to off-shell top-antitop production with leptonic decays at the LHC, JHEP 08 (2016) 155 [arXiv:1607.05571] [INSPIRE].
A. Denner, D. Lombardi and G. Pelliccioli, Complete NLO corrections to off-shell \( t\overline{t}Z \) production at the LHC, JHEP 09 (2023) 072 [arXiv:2306.13535] [INSPIRE].
G. Bevilacqua, M. Czakon, M. Kubocz and M. Worek, Complete Nagy-Soper subtraction for next-to-leading order calculations in QCD, JHEP 10 (2013) 204 [arXiv:1308.5605] [INSPIRE].
S. Catani and M.H. Seymour, A general algorithm for calculating jet cross-sections in NLO QCD, Nucl. Phys. B 485 (1997) 291 [hep-ph/9605323] [INSPIRE].
S. Catani, S. Dittmaier, M.H. Seymour and Z. Trócsányi, The dipole formalism for next-to-leading order QCD calculations with massive partons, Nucl. Phys. B 627 (2002) 189 [hep-ph/0201036] [INSPIRE].
G. Bevilacqua, M. Lupattelli, D. Stremmer and M. Worek, Study of additional jet activity in top quark pair production and decay at the LHC, Phys. Rev. D 107 (2023) 114027 [arXiv:2212.04722] [INSPIRE].
A. Denner and S. Dittmaier, Electroweak Radiative Corrections for Collider Physics, Phys. Rept. 864 (2020) 1 [arXiv:1912.06823] [INSPIRE].
Z. Nagy and Z. Trócsányi, Next-to-leading order calculation of four jet observables in electron positron annihilation, Phys. Rev. D 59 (1999) 014020 [Erratum ibid. 62 (2000) 099902] [hep-ph/9806317] [INSPIRE].
Z. Nagy, Next-to-leading order calculation of three jet observables in hadron hadron collision, Phys. Rev. D 68 (2003) 094002 [hep-ph/0307268] [INSPIRE].
G. Bevilacqua et al., Assault on the NLO Wishlist: pp → \( t\overline{t}b\overline{b} \), JHEP 09 (2009) 109 [arXiv:0907.4723] [INSPIRE].
M. Czakon, H.B. Hartanto, M. Kraus and M. Worek, Matching the Nagy-Soper parton shower at next-to-leading order, JHEP 06 (2015) 033 [arXiv:1502.00925] [INSPIRE].
M. Czakon, C.G. Papadopoulos and M. Worek, Polarizing the Dipoles, JHEP 08 (2009) 085 [arXiv:0905.0883] [INSPIRE].
Z. Nagy and D.E. Soper, Parton showers with quantum interference, JHEP 09 (2007) 114 [arXiv:0706.0017] [INSPIRE].
J.M. Campbell, R.K. Ellis and F. Tramontano, Single top production and decay at next-to-leading order, Phys. Rev. D 70 (2004) 094012 [hep-ph/0408158] [INSPIRE].
M. Jezabek and J.H. Kuhn, QCD Corrections to Semileptonic Decays of Heavy Quarks, Nucl. Phys. B 314 (1989) 1 [INSPIRE].
A. Czarnecki, QCD corrections to the decay t → Wb in dimensional regularization, Phys. Lett. B 252 (1990) 467 [INSPIRE].
L. Basso, S. Dittmaier, A. Huss and L. Oggero, Techniques for the treatment of IR divergences in decay processes at NLO and application to the top-quark decay, Eur. Phys. J. C 76 (2016) 56 [arXiv:1507.04676] [INSPIRE].
T. Binoth, G. Ossola, C.G. Papadopoulos and R. Pittau, NLO QCD corrections to tri-boson production, JHEP 06 (2008) 082 [arXiv:0804.0350] [INSPIRE].
G. Bevilacqua, H.B. Hartanto, M. Kraus and M. Worek, Off-shell Top Quarks with One Jet at the LHC: A comprehensive analysis at NLO QCD, JHEP 11 (2016) 098 [arXiv:1609.01659] [INSPIRE].
A. van Hameren, PARNI for importance sampling and density estimation, Acta Phys. Polon. B 40 (2009) 259 [arXiv:0710.2448] [INSPIRE].
A. van Hameren, Kaleu: A General-Purpose Parton-Level Phase Space Generator, arXiv:1003.4953 [INSPIRE].
J. Alwall et al., A standard format for Les Houches event files, Comput. Phys. Commun. 176 (2007) 300 [hep-ph/0609017] [INSPIRE].
Z. Bern et al., Ntuples for NLO Events at Hadron Colliders, Comput. Phys. Commun. 185 (2014) 1443 [arXiv:1310.7439] [INSPIRE].
S. Actis et al., RECOLA: REcursive Computation of One-Loop Amplitudes, Comput. Phys. Commun. 214 (2017) 140 [arXiv:1605.01090] [INSPIRE].
S. Actis et al., Recursive generation of one-loop amplitudes in the Standard Model, JHEP 04 (2013) 037 [arXiv:1211.6316] [INSPIRE].
P. Draggiotis, R.H.P. Kleiss and C.G. Papadopoulos, On the computation of multigluon amplitudes, Phys. Lett. B 439 (1998) 157 [hep-ph/9807207] [INSPIRE].
P.D. Draggiotis, R.H.P. Kleiss and C.G. Papadopoulos, Multijet production in hadron collisions, Eur. Phys. J. C 24 (2002) 447 [hep-ph/0202201] [INSPIRE].
A. van Hameren, Multi-gluon one-loop amplitudes using tensor integrals, JHEP 07 (2009) 088 [arXiv:0905.1005] [INSPIRE].
A. Denner, S. Dittmaier and L. Hofer, Collier: a fortran-based Complex One-Loop LIbrary in Extended Regularizations, Comput. Phys. Commun. 212 (2017) 220 [arXiv:1604.06792] [INSPIRE].
A. Denner and S. Dittmaier, Reduction schemes for one-loop tensor integrals, Nucl. Phys. B 734 (2006) 62 [hep-ph/0509141] [INSPIRE].
A. Denner and S. Dittmaier, Reduction of one loop tensor five point integrals, Nucl. Phys. B 658 (2003) 175 [hep-ph/0212259] [INSPIRE].
A. Denner and S. Dittmaier, Scalar one-loop 4-point integrals, Nucl. Phys. B 844 (2011) 199 [arXiv:1005.2076] [INSPIRE].
G. Ossola, C.G. Papadopoulos and R. Pittau, CutTools: A program implementing the OPP reduction method to compute one-loop amplitudes, JHEP 03 (2008) 042 [arXiv:0711.3596] [INSPIRE].
A. van Hameren, OneLOop: For the evaluation of one-loop scalar functions, Comput. Phys. Commun. 182 (2011) 2427 [arXiv:1007.4716] [INSPIRE].
G. Ossola, C.G. Papadopoulos and R. Pittau, Reducing full one-loop amplitudes to scalar integrals at the integrand level, Nucl. Phys. B 763 (2007) 147 [hep-ph/0609007] [INSPIRE].
F. Buccioni, S. Pozzorini and M. Zoller, On-the-fly reduction of open loops, Eur. Phys. J. C 78 (2018) 70 [arXiv:1710.11452] [INSPIRE].
A. Denner, J.-N. Lang and M. Pellen, Full NLO QCD corrections to off-shell \( t\overline{t}b\overline{b} \) production, Phys. Rev. D 104 (2021) 056018 [arXiv:2008.00918] [INSPIRE].
A. Denner, J.-N. Lang and S. Uccirati, Recola2: REcursive Computation of One-Loop Amplitudes 2, Comput. Phys. Commun. 224 (2018) 346 [arXiv:1711.07388] [INSPIRE].
A. Denner, G. Weiglein and S. Dittmaier, Application of the background field method to the electroweak standard model, Nucl. Phys. B 440 (1995) 95 [hep-ph/9410338] [INSPIRE].
A. Denner, J.-N. Lang and S. Uccirati, NLO electroweak corrections in extended Higgs Sectors with RECOLA2, JHEP 07 (2017) 087 [arXiv:1705.06053] [INSPIRE].
A. Denner and S. Dittmaier, The Complex-mass scheme for perturbative calculations with unstable particles, Nucl. Phys. B Proc. Suppl. 160 (2006) 22 [hep-ph/0605312] [INSPIRE].
A. Sirlin, Radiative Corrections in the SU(2)L × U(1) Theory: A Simple Renormalization Framework, Phys. Rev. D 22 (1980) 971 [INSPIRE].
A. Denner, Techniques for calculation of electroweak radiative corrections at the one loop level and results for W physics at LEP-200, Fortsch. Phys. 41 (1993) 307 [arXiv:0709.1075] [INSPIRE].
W.F.L. Hollik, Radiative Corrections in the Standard Model and their Role for Precision Tests of the Electroweak Theory, Fortsch. Phys. 38 (1990) 165 [INSPIRE].
W.J. Marciano and A. Sirlin, Radiative Corrections to Neutrino Induced Neutral Current Phenomena in the SU(2)L × U(1) Theory, Phys. Rev. D 22 (1980) 2695 [Erratum ibid. 31 (1985) 213] [INSPIRE].
A. Manohar, P. Nason, G.P. Salam and G. Zanderighi, How bright is the proton? A precise determination of the photon parton distribution function, Phys. Rev. Lett. 117 (2016) 242002 [arXiv:1607.04266] [INSPIRE].
NNPDF collaboration, Parton distributions from high-precision collider data, Eur. Phys. J. C 77 (2017) 663 [arXiv:1706.00428] [INSPIRE].
A.V. Manohar, P. Nason, G.P. Salam and G. Zanderighi, The Photon Content of the Proton, JHEP 12 (2017) 046 [arXiv:1708.01256] [INSPIRE].
NNPDF collaboration, Illuminating the photon content of the proton within a global PDF analysis, SciPost Phys. 5 (2018) 008 [arXiv:1712.07053] [INSPIRE].
A. Buckley et al., LHAPDF6: parton density access in the LHC precision era, Eur. Phys. J. C 75 (2015) 132 [arXiv:1412.7420] [INSPIRE].
Particle Data Group collaboration, Review of Particle Physics, PTEP 2022 (2022) 083C01 [INSPIRE].
A. Denner, S. Dittmaier, S. Kallweit and S. Pozzorini, NLO QCD corrections to off-shell top-antitop production with leptonic decays at hadron colliders, JHEP 10 (2012) 110 [arXiv:1207.5018] [INSPIRE].
M. Cacciari, G.P. Salam and G. Soyez, The anti-kt jet clustering algorithm, JHEP 04 (2008) 063 [arXiv:0802.1189] [INSPIRE].
S. Frixione, Isolated photons in perturbative QCD, Phys. Lett. B 429 (1998) 369 [hep-ph/9801442] [INSPIRE].
A. Denner, S. Dittmaier, M. Hecht and C. Pasold, NLO QCD and electroweak corrections to W + γ production with leptonic W-boson decays, JHEP 04 (2015) 018 [arXiv:1412.7421] [INSPIRE].
A. Denner, S. Dittmaier, M. Hecht and C. Pasold, NLO QCD and electroweak corrections to Z + γ production with leptonic Z-boson decays, JHEP 02 (2016) 057 [arXiv:1510.08742] [INSPIRE].
A. Denner and R. Feger, NLO QCD corrections to off-shell top-antitop production with leptonic decays in association with a Higgs boson at the LHC, JHEP 11 (2015) 209 [arXiv:1506.07448] [INSPIRE].
G. Bevilacqua et al., Towards constraining Dark Matter at the LHC: Higher order QCD predictions for \( t\overline{t} \) + Z(Z → \( {\nu}_{\ell }{\overline{\nu}}_{\ell } \)), JHEP 11 (2019) 001 [arXiv:1907.09359] [INSPIRE].
D. Stremmer and M. Worek, Production and decay of the Higgs boson in association with top quarks, JHEP 02 (2022) 196 [arXiv:2111.01427] [INSPIRE].
J.M. Campbell, R.K. Ellis, P. Nason and E. Re, Top-Pair Production and Decay at NLO Matched with Parton Showers, JHEP 04 (2015) 114 [arXiv:1412.1828] [INSPIRE].
T. Ježo and P. Nason, On the Treatment of Resonances in Next-to-Leading Order Calculations Matched to a Parton Shower, JHEP 12 (2015) 065 [arXiv:1509.09071] [INSPIRE].
T. Ježo et al., An NLO+PS generator for \( t\overline{t} \) and Wt production and decay including non-resonant and interference effects, Eur. Phys. J. C 76 (2016) 691 [arXiv:1607.04538] [INSPIRE].
T. Ježo, J.M. Lindert and S. Pozzorini, Resonance-aware NLOPS matching for off-shell \( t\overline{t} \) + tW production with semileptonic decays, JHEP 10 (2023) 008 [arXiv:2307.15653] [INSPIRE].
P. Nason, A new method for combining NLO QCD with shower Monte Carlo algorithms, JHEP 11 (2004) 040 [hep-ph/0409146] [INSPIRE].
S. Frixione, P. Nason and C. Oleari, Matching NLO QCD computations with Parton Shower simulations: the POWHEG method, JHEP 11 (2007) 070 [arXiv:0709.2092] [INSPIRE].
S. Alioli, P. Nason, C. Oleari and E. Re, A general framework for implementing NLO calculations in shower Monte Carlo programs: the POWHEG BOX, JHEP 06 (2010) 043 [arXiv:1002.2581] [INSPIRE].
S. Frixione and B.R. Webber, Matching NLO QCD computations and parton shower simulations, JHEP 06 (2002) 029 [hep-ph/0204244] [INSPIRE].
S. Frixione, P. Nason and B.R. Webber, Matching NLO QCD and parton showers in heavy flavor production, JHEP 08 (2003) 007 [hep-ph/0305252] [INSPIRE].
Acknowledgments
We thank Ansgar Denner and Mathieu Pellen for providing us with the results for the NLO EW corrections to the \( pp\to {e}^{+}{\nu}_e{\mu}^{-}{\overline{\nu}}_{\mu }b\overline{b} \) + X process that helped to cross check our implementation of the EW corrections in the Helac-Dipoles framework.
This work was supported by the Deutsche Forschungsgemeinschaft (DFG) under grant 396021762 – TRR 257: P3H — Particle Physics Phenomenology after the Higgs Discovery. Support by a grant of the Bundesministerium für Bildung und Forschung (BMBF) is additionally acknowledged.
The authors gratefully acknowledge the computing time provided to them at the NHR Center NHR4CES at RWTH Aachen University (project number p0020216). This is funded by the Federal Ministry of Education and Research, and the state governments participating on the basis of the resolutions of the GWK for national high performance computing at universities.
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Stremmer, D., Worek, M. Complete NLO corrections to top-quark pair production with isolated photons. J. High Energ. Phys. 2024, 91 (2024). https://doi.org/10.1007/JHEP07(2024)091
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DOI: https://doi.org/10.1007/JHEP07(2024)091