Abstract
We present a new, universally applicable toy model of colour reconnections in hadronic final states. The model is based on hadronising strings and has one free parameter. We next present an implementation of this model in the PYTHIA event generator and provide several parameter sets (‘tunes’), constrained by fits to Tevatron minimum-bias data. Finally, we consider the sensitivity of a simplified top mass analysis to these effects, in exclusive semi-leptonic top events at the Tevatron. A first attempt at isolating the genuine non-perturbative effects gives an estimate of order δmtop ∼ ±0.5 GeV from non-perturbative uncertainties, and a further δmtop ∼ ±1 GeV from shower effects.
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References
Tevatron Electroweak Working Group, Combination of cdf and d0 results on the mass of the top quark (2006), http://www-cdf.fnal.gov/physics/new/top/top.html, see also hep-ex/0608032
A. Bhatti et al., Nucl. Instrum. Methods A 566, 375 (2006)
J. D’Hondt, S. Lowette, J. Heyninck, S. Kasselmann, Light quark jet energy scale calibration using the W mass constraint in single-leptonic t anti-t events (2006), CERN-CMS-NOTE-2006-025
M.L. Mangano, T.J. Stelzer, Ann. Rev. Nucl. Part. Sci. 55, 555 (2005)
S. Höche et al., Matching parton showers and matrix elements (2006)
T. Sjöstrand, Monte Carlo generators (2006)
E. Norrbin, T. Sjöstrand, Nucl. Phys. B 603, 297 (2001)
S. Frixione, P. Nason, B.R. Webber, JHEP 08, 007 (2003)
K. Hamilton, P. Richardson, JHEP 2, 069 (2007)
M.L. Mangano, M. Moretti, F. Piccinini, M. Treccani, JHEP 01, 013 (2007)
T. Affolder et al., Phys. Rev. D 65, 092002 (2002)
R. Field, R.C. Group, Pythia Tune A, Herwig, and Jimmy in run 2 at CDF (2005)
R. Field, AIP Conf. Proc. 828, 163 (2006)
S. Abdullin et al., Sensitivity of the muon isolation cut efficiency to the underlying event uncertainties (2006), CERN-CMS-NOTE-2006-033
D. Acosta et al., The underlying event at the LHC (2006) CERN-CMS-NOTE-2006-067
M. Albrow et al., Tevatron-for-LHC report of the QCD working group (2006)
T. Sjöstrand, M. van Zijl, Phys. Rev. D 36, 2019 (1987)
J.M. Butterworth, J.R. Forshaw, M.H. Seymour, Z. Phys. C 72, 637 (1996)
T. Sjöstrand, P.Z. Skands, JHEP 03, 053 (2004)
T. Sjöstrand, P.Z. Skands, Eur. Phys. J. C 39, 129 (2005)
M. Sandhoff, P. Skands, Colour annealing: A toy model of colour reconnections (2005), FERMILAB-CONF-05-518-T, In Les Houches ‘Physics at TeV Colliders’ (2005) SM and Higgs Working Group: Summary report, hep-ph/0602198
M. Sandhoff, Untersuchung des Farblusses in hadronischen top-Quark-Zerfällen am D0-Experiment (2005) Diploma Thesis, Bergische Universität Wuppertal, WU D 05-08
G. Gustafson, U. Pettersson, P.M. Zerwas, Phys. Lett. B 209, 90 (1988)
T. Sjöstrand, V.A. Khoze, Phys. Rev. Lett. 72, 28 (1994)
T. Sjöstrand, V.A. Khoze, Z. Phys. C 62, 281 (1994)
B. Andersson, G. Gustafson, G. Ingelman, T. Sjöstrand, Phys. Rep. 97, 31 (1983)
X. Artru, Phys. Rep. 97, 147 (1983)
V.A. Khoze, T. Sjöstrand, Phys. Lett. B 328, 466 (1994)
G. Gustafson, J. Häkkinen, Z. Phys. C 64, 659 (1994)
L. Lönnblad, Z. Phys. C 70, 107 (1996)
C. Friberg, G. Gustafson, J. Häkkinen, Nucl. Phys. B 490, 289 (1997)
B.R. Webber, J. Phys. G 24, 287 (1998)
W. Buchmüller, A. Hebecker, Phys. Lett. B 355, 573 (1995)
A. Edin, G. Ingelman, J. Rathsman, Phys. Lett. B 366, 371 (1996)
J. Rathsman, Phys. Lett. B 452, 364 (1999)
R. Enberg, G. Ingelman, N. Timneanu, Phys. Rev. D 64, 114015 (2001)
A. Edin, G. Ingelman, J. Rathsman, Phys. Rev. D 56, 7317 (1997)
G. Abbiendi et al., Phys. Lett. B 453, 153 (1999)
G. Abbiendi et al., Eur. Phys. J. C 45, 291 (2006)
S. Schael et al., Eur. Phys. J. C 48, 685 (2006)
J. Abdallah et al., Phys. Lett. B 643, 147 (2006)
T. Sjöstrand, S. Mrenna, P. Skands, JHEP 05, 026 (2006), http://projects.hepforge.org/pythia6/
G. Gustafson, Phys. Lett. B 175, 453 (1986)
G. Gustafson, U. Pettersson, Nucl. Phys. B 306, 746 (1988)
B. Andersson, G. Gustafson, B. Söderberg, Z. Phys. C 20, 317 (1983)
T. Sjöstrand, P.Z. Skands, Nucl. Phys. B 659, 243 (2003)
R.D. Field, Private communication (2007)
G. Rudolph, Private communication
A. Abulencia et al., Phys. Rev. D 73, 032003 (2006)
A. Abulencia et al., Phys. Rev. D 73, 092002 (2006)
V.M. Abazov, Phys. Rev. D 74, 092005 (2006)
D0, Measurement of the top quark mass in the lepton + jets channel using DO Run II data: The low bias template method, D0note 4728.conf (2005)
V. Abazov, Phys. Rev. D 75, 092001 (2007)
J.M. Butterworth, J.P. Couchman, B.E. Cox, B.M. Waugh, Ktjet: A c++ implementation of the k⊥ clustering algorithm, October 2002, MAN/HEP/2002/02, UCL/HEP 2002-02
W.G. Plano, Cone jet implementation in the kTjet-package, University of Manchester, Private communications
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PACS
12.38.-t; 13.85.Hd; 13.87.Fh
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Skands, P., Wicke, D. Non-perturbative QCD effects and the top mass at the Tevatron. Eur. Phys. J. C 52, 133–140 (2007). https://doi.org/10.1140/epjc/s10052-007-0352-1
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DOI: https://doi.org/10.1140/epjc/s10052-007-0352-1