Abstract
We present an implementation of the next-to-leading order dijet production process in hadronic collisions in the framework of POWHEG, which is a method to implement NLO calculations within a shower Monte Carlo context. In constructing the simulation, we have made use of the POWHEG BOX toolkit, which makes light of many of the most technical steps. The majority of this article is concerned with the study of the predictions of the Monte Carlo simulation. In so doing, we validate our program for use in experimental analyses, elaborating on some of the more subtle features which arise from the interplay of the NLO and resummed components of the calculation. We conclude our presentation by comparing predictions from the simulation against a number of Tevatron and LHC jet-production results.
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ATLAS collaboration, G. Aad et al., Measurement of inclusive jet and dijet cross sections in proton-proton collisions at 7 TeV centre-of-mass energy with the ATLAS detector, Eur. Phys. J. C 71 (2011) 1512 [arXiv:1009.5908] [SPIRES].
CMS collaboration, V. Khachatryan et al., Search for Dijet Resonances in 7 TeV pp Collisions at CMS, Phys. Rev. Lett. 105 (2010) 211801 [arXiv:1010.0203] [SPIRES].
U. Baur, I. Hinchliffe and D. Zeppenfeld, Excited Quark Production at Hadron Colliders, Int. J. Mod. Phys. A 2 (1987) 1285 [SPIRES].
S. Cullen, M. Perelstein and M.E. Peskin, TeV strings and collider probes of large extra dimensions, Phys. Rev. D 62 (2000) 055012 [hep-ph/0001166] [SPIRES].
L.A. Anchordoqui et al., Dijet signals for low mass strings at the LHC, Phys. Rev. Lett. 101 (2008) 241803 [arXiv:0808.0497] [SPIRES].
S. Frixione and B.R. Webber, Matching NLO QCD computations and parton shower simulations, JHEP 06 (2002) 029 [hep-ph/0204244] [SPIRES].
P. Nason, A new method for combining NLO QCD with shower Monte Carlo algorithms, JHEP 11 (2004) 040 [hep-ph/0409146] [SPIRES].
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] [SPIRES].
S. Frixione, F. Stoeckli, P. Torrielli, B.R. Webber and C.D. White, The MCaNLO 4.0 Event Generator, arXiv:1010.0819 [SPIRES].
M. Bahr et al., HERWIG++ Physics and Manual, Eur. Phys. J. C 58 (2008) 639 [arXiv:0803.0883] [SPIRES].
S. Hoche, F. Krauss, M. Schonherr and F. Siegert, Automating the POWHEG method in Sherpa, arXiv:1008.5399 [SPIRES].
The processes implemented so far in the POWHEG BOX are available at the svn repository: svn://powhegbox.mib.infn.it/trunk/POWHEG-BOX.
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] [SPIRES].
S. Frixione and G. Ridolfi, Jet photoproduction at HERA, Nucl. Phys. B 507 (1997) 315 [hep-ph/9707345] [SPIRES].
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].
S. Frixione, A General approach to jet cross-sections in QCD, Nucl. Phys. B 507 (1997) 295 [hep-ph/9706545] [SPIRES].
R.K. Ellis and J.C. Sexton, QCD radiative corrections to parton-parton scattering, Nucl. Phys. B 269 (1986) 445 [SPIRES].
Z. Kunszt and D.E. Soper, Calculation of jet cross-sections in hadron collisions at order α s 3, Phys. Rev. D 46 (1992) 192 [SPIRES].
R.K. Ellis, G. Marchesini and B.R. Webber, Soft Radiation in Parton Parton Scattering, Nucl. Phys. B 286 (1987) 643 [SPIRES].
G. ’t Hooft, A planar diagram theory for strong interactions, Nucl. Phys. B 72 (1974) 461 [SPIRES].
G. Marchesini and B.R. Webber, Monte Carlo Simulation of General Hard Processes with Coherent QCD Radiation, Nucl. Phys. B 310 (1988) 461 [SPIRES].
S. Alioli, P. Nason, C. Oleari and E. Re, Vector boson plus one jet production in POWHEG, JHEP 01 (2011) 095 [arXiv:1009.5594] [SPIRES].
G.C. Blazey et al., Run II jet physics, hep-ex/0005012 [SPIRES].
J. Pumplin et al., New generation of parton distributions with uncertainties from global QCD analysis, JHEP 07 (2002) 012 [hep-ph/0201195] [SPIRES].
M. Cacciari and G.P. Salam, Dispelling the N 3 myth for the k T jet-finder, Phys. Lett. B 641 (2006) 57 [hep-ph/0512210] [SPIRES].
M. Cacciari, G.P. Salam and G.Soyez, http://www.fastjet.fr
G.P. Salam and G. Soyez, A practical Seedless Infrared-Safe Cone jet algorithm, JHEP 05 (2007) 086 [arXiv:0704.0292] [SPIRES].
S.D. Ellis and D.E. Soper, Successive combination jet algorithm for hadron collisions, Phys. Rev. D 48 (1993) 3160 [hep-ph/9305266] [SPIRES].
S. Catani, Y.L. Dokshitzer, M.H. Seymour and B.R. Webber, Longitudinally invariant k T clustering algorithms for hadron-hadron collisions, Nucl. Phys. B 406 (1993) 187 [SPIRES].
P. Nason, MINT: a Computer Program for Adaptive Monte Carlo Integration and Generation of Unweighted Distributions, arXiv:0709.2085 [SPIRES].
CDF collaboration, T. Aaltonen et al., Measurement of the Inclusive Jet Cross section at the Fermilab Tevatron \( p\bar{p} \) Collider Using a Cone-Based Jet Algorithm, Phys. Rev. D 78 (2008) 052006 [arXiv:0807.2204] [SPIRES].
M. Klasen and G. Kramer, Dijet cross-sections at O(αα S 2) in photon-proton collisions, Phys. Lett. B 366 (1996) 385 [hep-ph/9508337] [SPIRES].
A. Banfi and M. Dasgupta, Dijet rates with symmetric E T cuts, JHEP 01 (2004) 027 [hep-ph/0312108] [SPIRES].
D0 collaboration, V.M. Abazov et al., Measurement of the dijet invariant mass cross section in proton anti-proton collisions at \( \sqrt {s} = 1.96\;TeV \), Phys. Lett. B 693 (2010) 531 [arXiv:1002.4594] [SPIRES].
M. Rubin, G.P. Salam and S. Sapeta, Giant QCD K-factors beyond NLO, JHEP 09 (2010) 084 [arXiv:1006.2144] [SPIRES].
S. Alioli, P. Nason, C. Oleari and E. Re, NLO Higgs boson production via gluon fusion matched with shower in POWHEG, JHEP 04 (2009) 002 [arXiv:0812.0578] [SPIRES].
K. Hamilton, P. Richardson and J. Tully, A Positive-Weight Next-to-Leading Order Monte Carlo Simulation for Higgs Boson Production, JHEP 04 (2009) 116 [arXiv:0903.4345] [SPIRES].
T. Sjöstrand, S. Mrenna and P.Z. Skands, PYTHIA 6.4 Physics and Manual, JHEP 05 (2006) 026 [hep-ph/0603175] [SPIRES].
G. Corcella et al., HERWIG 6.5: an event generator for Hadron Emission Reactions With Interfering Gluons (including supersymmetric processes), JHEP 01 (2001) 010 [hep-ph/0011363] [SPIRES].
G. Corcella et al., HERWIG 6.5 release note, hep-ph/0210213 [SPIRES].
E. Boos et al., Generic user process interface for event generators, hep-ph/0109068 [SPIRES].
J. Alwall et al., A standard format for Les Houches event files, Comput. Phys. Commun. 176 (2007) 300 [hep-ph/0609017] [SPIRES].
K. Hamilton, P. Richardson and J. Tully, A Positive-Weight Next-to-Leading Order Monte Carlo Simulation of Drell-Yan Vector Boson Production, JHEP 10 (2008) 015 [arXiv:0806.0290] [SPIRES].
T. Sjöstrand and P.Z. Skands, Multiple interactions and the structure of beam remnants, JHEP 03 (2004) 053 [hep-ph/0402078] [SPIRES].
CDF–Run II collaboration, A. Abulencia et al., Measurement of the Inclusive Jet Cross section using the k T algorithm in \( p\bar{p} \) collisions at \( \sqrt {s} = 1.96\;TeV \) with the CDF II Detector, Phys. Rev. D 75 (2007) 092006 [hep-ex/0701051] [SPIRES].
D0 collaboration, V.M. Abazov et al., Measurement of dijet azimuthal decorrelations at central rapidities in \( p\bar{p} \) collisions at \( \sqrt {s} = 1.96\;TeV \), Phys. Rev. Lett. 94 (2005) 221801 [hep-ex/0409040] [SPIRES].
CDF collaboration, F. Abe et al., Evidence for color coherence in \( p\bar{p} \) collisions at \( \sqrt {s} = 1.8\;TeV \), Phys. Rev. D 50 (1994) 5562 [SPIRES].
M. Cacciari, G.P. Salam and G. Soyez, The anti-k T jet clustering algorithm, JHEP 04 (2008) 063 [arXiv:0802.1189] [SPIRES].
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Alioli, S., Hamilton, K., Nason, P. et al. Jet pair production in POWHEG. J. High Energ. Phys. 2011, 81 (2011). https://doi.org/10.1007/JHEP04(2011)081
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DOI: https://doi.org/10.1007/JHEP04(2011)081