A RetroSearch Logo

Home - News ( United States | United Kingdom | Italy | Germany ) - Football scores

Search Query:

Showing content from https://link.springer.com/doi/10.1007/JHEP10(2012)155 below:

MINLO: multi-scale improved NLO | Journal of High Energy Physics

MINLO: multi-scale improved NLO

Abstract

In the present work we consider the assignment of the factorization and renormalization scales in hadron collider processes with associated jet production, at next-to-leading order (NLO) in perturbation theory. We propose a simple, definite prescription to this end, including Sudakov form factors to consistently account for the distinct kinematic scales occuring in such collisions. The scheme yields results that are accurate at NLO and, for a large class of observables, it resums to all orders the large logarithms that arise from kinematic configurations involving disparate scales. In practical terms the method is most simply understood as an NLO extension of the matrix element reweighting procedure employed in tree level matrix element-parton shower merging algorithms. By way of a proof-of-concept, we apply the method to Higgs and Z boson production in association with up to two jets.

Similar content being viewed by others Explore related subjectsDiscover the latest articles and news from researchers in related subjects, suggested using machine learning. References

  1. P.M. Stevenson, Optimized perturbation theory, Phys. Rev. D 23 (1981) 2916 [INSPIRE].

    ADS  Google Scholar 

  2. S.J. Brodsky, G.P. Lepage and P.B. Mackenzie, On the elimination of scale ambiguities in perturbative quantum chromodynamics, Phys. Rev. D 28 (1983) 228 [INSPIRE].

    ADS  Google Scholar 

  3. S.J. Brodsky and L. Di Giustino, Setting the renormalization scale in QCD: the principle of maximum conformality, arXiv:1107.0338 [INSPIRE].

  4. S. Catani, F. Krauss, R. Kuhn and B. Webber, QCD matrix elements + parton showers, JHEP 11 (2001) 063 [hep-ph/0109231] [INSPIRE].

    Article  ADS  Google Scholar 

  5. M.L. Mangano, M. Moretti and R. Pittau, Multijet matrix elements and shower evolution in hadronic collisions: \( Wb\overline{b} \) + n jets as a case study, Nucl. Phys. B 632 (2002) 343 [hep-ph/0108069] [INSPIRE].

    Article  ADS  Google Scholar 

  6. L. Lönnblad, Correcting the color dipole cascade model with fixed order matrix elements, JHEP 05 (2002) 046 [hep-ph/0112284] [INSPIRE].

    Article  Google Scholar 

  7. F. Krauss, Matrix elements and parton showers in hadronic interactions, JHEP 08 (2002) 015 [hep-ph/0205283] [INSPIRE].

    Article  ADS  Google Scholar 

  8. S. Mrenna and P. Richardson, Matching matrix elements and parton showers with HERWIG and PYTHIA, JHEP 05 (2004) 040 [hep-ph/0312274] [INSPIRE].

    Article  ADS  Google Scholar 

  9. M. Mangano, Merging multijet matrix elements and shower evolution in hadronic collisions, http://mlm.web.cern.ch/mlm/talks/lund-alpgen.pdf (2004).

  10. S. Frixione and B.R. Webber, Matching NLO QCD computations and parton shower simulations, JHEP 06 (2002) 029 [hep-ph/0204244] [INSPIRE].

    Article  ADS  Google Scholar 

  11. P. Nason, A new method for combining NLO QCD with shower Monte Carlo algorithms, JHEP 11 (2004) 040 [hep-ph/0409146] [INSPIRE].

    Article  ADS  Google Scholar 

  12. 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].

    Article  ADS  Google Scholar 

  13. S.D. Ellis and D.E. Soper, Successive combination jet algorithm for hadron collisions, Phys. Rev. D 48 (1993) 3160 [hep-ph/9305266] [INSPIRE].

    ADS  Google Scholar 

  14. S. Catani, Y.L. Dokshitzer, M. Seymour and B. Webber, Longitudinally invariant K t clustering algorithms for hadron hadron collisions, Nucl. Phys. B 406 (1993) 187 [INSPIRE].

    Article  ADS  Google Scholar 

  15. M. Rubin, G.P. Salam and S. Sapeta, Giant QCD K-factors beyond NLO, JHEP 09 (2010) 084 [arXiv:1006.2144] [INSPIRE].

    Article  ADS  Google Scholar 

  16. 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].

    Article  ADS  Google Scholar 

  17. D. de Florian, M. Grazzini and Z. Kunszt, Higgs production with large transverse momentum in hadronic collisions at next-to-leading order, Phys. Rev. Lett. 82 (1999) 5209 [hep-ph/9902483] [INSPIRE].

    Article  ADS  Google Scholar 

  18. V. Ravindran, J. Smith and W. Van Neerven, Next-to-leading order QCD corrections to differential distributions of Higgs boson production in hadron hadron collisions, Nucl. Phys. B 634 (2002) 247 [hep-ph/0201114] [INSPIRE].

    Article  ADS  Google Scholar 

  19. J.M. Campbell, R.K. Ellis and G. Zanderighi, Next-to-leading order Higgs + 2 jet production via gluon fusion, JHEP 10 (2006) 028 [hep-ph/0608194] [INSPIRE].

    Article  ADS  Google Scholar 

  20. J.M. Campbell, R.K. Ellis and C. Williams, Hadronic production of a Higgs boson and two jets at next-to-leading order, Phys. Rev. D 81 (2010) 074023 [arXiv:1001.4495] [INSPIRE].

    ADS  Google Scholar 

  21. J.M. Campbell et al., NLO Higgs boson production plus one and two jets using the POWHEG BOX, MadGraph4 and MCFM, JHEP 07 (2012) 092 [arXiv:1202.5475] [INSPIRE].

    Article  ADS  Google Scholar 

  22. S. Alioli, P. Nason, C. Oleari and E. Re, Vector boson plus one jet production in POWHEG, JHEP 01 (2011) 095 [arXiv:1009.5594] [INSPIRE].

    Article  ADS  Google Scholar 

  23. E. Re, NLO corrections merged with parton showers for Z + 2 jets production using the POWHEG method, JHEP 10 (2012) 031 [arXiv:1204.5433] [INSPIRE].

    Article  ADS  Google Scholar 

  24. W. Giele, E.N. Glover and D.A. Kosower, Higher order corrections to jet cross-sections in hadron colliders, Nucl. Phys. B 403 (1993) 633 [hep-ph/9302225] [INSPIRE].

    Article  ADS  Google Scholar 

  25. Z. Bern, L.J. Dixon and D.A. Kosower, One loop amplitudes for e + e − to four partons, Nucl. Phys. B 513 (1998) 3 [hep-ph/9708239] [INSPIRE].

    Article  ADS  Google Scholar 

  26. J.M. Campbell and R.K. Ellis, Next-to-leading order corrections to W + 2 jet and Z + 2 jet production at hadron colliders, Phys. Rev. D 65 (2002) 113007 [hep-ph/0202176] [INSPIRE].

    ADS  Google Scholar 

  27. J. Pumplin et al., New generation of parton distributions with uncertainties from global QCD analysis, JHEP 07 (2002) 012 [hep-ph/0201195] [INSPIRE].

    Article  ADS  Google Scholar 

  28. A. Martin, W. Stirling, R. Thorne and G. Watt, Parton distributions for the LHC, Eur. Phys. J. C 63 (2009) 189 [arXiv:0901.0002] [INSPIRE].

    Article  ADS  Google Scholar 

  29. M. Cacciari, G.P. Salam and G. Soyez, FastJet user manual, Eur. Phys. J. C 72 (2012) 1896 [arXiv:1111.6097] [INSPIRE].

    Article  ADS  Google Scholar 

  30. T. Sjöstrand, S. Mrenna and P.Z. Skands, PYTHIA 6.4 physics and manual, JHEP 05 (2006) 026 [hep-ph/0603175] [INSPIRE].

    Article  ADS  Google Scholar 

  31. C. Berger et al., Precise predictions for W + 4 jet production at the Large Hadron Collider, Phys. Rev. Lett. 106 (2011) 092001 [arXiv:1009.2338] [INSPIRE].

    Article  ADS  Google Scholar 

  32. G.P. Salam, private communication.

  33. S. Dittmaier et al., Handbook of LHC Higgs cross sections: 2. Differential distributions, arXiv:1201.3084 [INSPIRE].

  34. G. Bozzi, S. Catani, G. Ferrera, D. de Florian and M. Grazzini, Transverse-momentum resummation: A Perturbative study of Z production at the Tevatron, Nucl. Phys. B 815 (2009) 174 [arXiv:0812.2862] [INSPIRE].

    Article  ADS  Google Scholar 

Download references

Author information Authors and Affiliations

  1. Theory Division, CERN, CH-1211, Geneva 23, Switzerland

    Keith Hamilton & Paolo Nason

  2. INFN — sezione di Milano Bicocca, Milan, Italy

    Paolo Nason

  3. Rudolf Peierls Centre for Theoretical Physics, University of Oxford, 1 Keble Road, Oxford, UK

    Giulia Zanderighi

Authors
  1. Keith Hamilton
  2. Paolo Nason
  3. Giulia Zanderighi
Corresponding author

Correspondence to Paolo Nason.

Additional information

ArXiv ePrint: 1206.3572

On leave from University College London. (Keith Hamilton)

Rights and permissions

Open Access This article is distributed under the terms of the Creative Commons Attribution 2.0 International License ( https://creativecommons.org/licenses/by/2.0 ), which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

Reprints and permissions

About this article Cite this article

Hamilton, K., Nason, P. & Zanderighi, G. MINLO: multi-scale improved NLO. J. High Energ. Phys. 2012, 155 (2012). https://doi.org/10.1007/JHEP10(2012)155

Download citation

Keywords

RetroSearch is an open source project built by @garambo | Open a GitHub Issue

Search and Browse the WWW like it's 1997 | Search results from DuckDuckGo

HTML: 3.2 | Encoding: UTF-8 | Version: 0.7.4