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NLO QCD corrections in Herwig++ with MC@NLO. (English) Zbl 1214.81299

Summary: We present the calculations necessary to obtain next-to-leading order QCD precision with the Herwig++ event generator using the MC@NLO approach, and implement them for all the processes that were previously available from Fortran HERWIG with MC@NLO. We show a range of results comparing the two implementations. With these calculations and recent developments in the automatic generation of NLO matrix elements, it will be possible to obtain NLO precision with Herwig++ for a much wider range of processes.

MSC:

81V05 Strong interaction, including quantum chromodynamics
81T15 Perturbative methods of renormalization applied to problems in quantum field theory
81T80 Simulation and numerical modelling (quantum field theory) (MSC2010)
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References:

[1] S. Frixione and B.R. Webber, Matching NLO QCD computations and parton shower simulations, JHEP06 (2002) 029 [hep-ph/0204244] [SPIRES].
[2] G. Marchesini et al., HERWIG: a Monte Carlo event generator for simulating hadron emission reactions with interfering gluons. Version 5.1 — April 1991, Comput. Phys. Commun.67 (1992) 465 [SPIRES]. · Zbl 0875.65018
[3] G. Corcella et al., HERWIG 6.5: an event generator for Hadron Emission Reactions With Interfering Gluons (including supersymmetric processes), JHEP01 (2001) 010 [hep-ph/0011363] [SPIRES].
[4] G. Corcella et al., HERWIG 6.5 release note, hep-ph/0210213 [SPIRES].
[5] P. Torrielli and S. Frixione, Matching NLO QCD computations with PYTHIA using MC@NLO, JHEP04 (2010) 110 [arXiv:1002.4293] [SPIRES]. · Zbl 1272.81198
[6] M. Bahr et al., HERWIG++ physics and manual, Eur. Phys. J.C 58 (2008) 639 [arXiv:0803.0883] [SPIRES].
[7] M. Bahr et al., HERW IG++ 2.3 release note, arXiv:0812.0529 [SPIRES].
[8] O. Latunde-Dada, HERWIG Monte Carlo at Next-to-Leading Order for e+e−annihilation and lepton pair production, JHEP11 (2007) 040 [arXiv:0708.4390] [SPIRES].
[9] A. Papaefstathiou and O. Latunde-Dada, NLO production of W′ bosons at hadron colliders using the MC@NLO and POWHEG methods, JHEP07 (2009) 044 [arXiv:0901.3685] [SPIRES].
[10] O. Latunde-Dada, MC@NLO for the hadronic decay of Higgs bosons in associated production with vector bosons, JHEP05 (2009) 112 [arXiv:0903.4135] [SPIRES].
[11] S. Frixione, P. Nason and B.R. Webber, Matching NLO QCD and parton showers in heavy flavour production, JHEP08 (2003) 007 [hep-ph/0305252] [SPIRES].
[12] S. Frixione, Z. Kunszt and A. Signer, Three jet cross-sections to next-to-leading order, Nucl. Phys.B 467 (1996) 399 [hep-ph/9512328] [SPIRES].
[13] R. Frederix, S. Frixione, F. Maltoni and T. Stelzer, Automation of next-to-leading order computations in QCD: the FKS subtraction, JHEP10 (2009) 003 [arXiv:0908.4272] [SPIRES].
[14] S. Frixione, E. Laenen, P. Motylinski and B.R. Webber, Single-top production in MC@NLO, JHEP03 (2006) 092 [hep-ph/0512250] [SPIRES].
[15] S. Frixione, E. Laenen, P. Motylinski and B.R. Webber, Angular correlations of lepton pairs from vector boson and top quark decays in Monte Carlo simulations, JHEP04 (2007) 081 [hep-ph/0702198] [SPIRES].
[16] P.M. Nadolsky et al., Implications of CTEQ global analysis for collider observables, Phys. Rev.D 78 (2008) 013004 [arXiv:0802.0007] [SPIRES].
[17] C. Anastasiou, G. Dissertori, F. Stockli and B.R. Webber, QCD radiation effects on the H → WW → lνlν signal at the LHC, JHEP03 (2008) 017 [arXiv:0801.2682] [SPIRES].
[18] C. Anastasiou, G. Dissertori, M. Grazzini, F. Stockli and B.R. Webber, Perturbative QCD effects and the search for a H → WW → lνlν signal at the Tevatron, JHEP08 (2009) 099 [arXiv:0905.3529] [SPIRES].
[19] S. Gieseke, P. Stephens and B. Webber, New formalism for QCD parton showers, JHEP12 (2003) 045 [hep-ph/0310083] [SPIRES].
[20] S. Catani, S. Dittmaier and Z. Trócsányi, One-loop singular behaviour of QCD and SUSY QCD amplitudes with massive partons, Phys. Lett.B 500 (2001) 149 [hep-ph/0011222] [SPIRES]. · Zbl 0972.81667
[21] K. Hamilton and P. Richardson, A simulation of QCD radiation in top quark decays, JHEP02 (2007) 069 [hep-ph/0612236] [SPIRES].
[22] M. Cacciari and G.P. Salam, Dispelling the N3myth for the ktjet-finder, Phys. Lett.B 641 (2006) 57 [hep-ph/0512210] [SPIRES].
[23] M. Cacciari, G.P. Salam and G. Soyez, FastJet, http://fastjet.fr/.
[24] S. Frixione, E. Laenen, P. Motylinski, B.R. Webber and C.D. White, Single-top hadroproduction in association with a W boson, JHEP07 (2008) 029 [arXiv:0805.3067] [SPIRES].
[25] K. Odagiri, Color connection structure of supersymmetric QCD (2 → 2) processes, JHEP10 (1998) 006 [hep-ph/9806531] [SPIRES].
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