TRR 9:  Computational Particle Physics

• Subject Area: Physics
• Term: from 2003 to 2014
• Project identifier: Deutsche Forschungsgemeinschaft (DFG) - Project number 5485680

• Final Report Year: 2016

Final Report Abstract

In recent years, computational physics has been established as an independent field of research. Theoretical particle physics, in particular, has profited from the development of computer-based techniques. In turn, the challenges provided by complex particle physics phenomena have led to new developments in computational physics. The two central themes of the CRC/TR 9 “Computational Particle Physics”, the perturbative calculation of particle physics observables using computer algebra and the numerical simulation of quantum field theories on the lattice, are outstanding examples of such an interplay. The rapid increase in computer resources and substantial algorithmic improvements have considerably extended the research prospects in theoretical particle physics. Including, for example, dynamical fermions in lattice simulations allows to predict observables, like transition matrix elements or particle spectra, with unprecedented precision. On the other hand, computer algebra has offered the opportunity to perform automated perturbative calculations at high loop orders, both for inclusive observables like masses and couplings, and for complex scattering processes at high-energy colliders. The CRC/TR 9 has achieved two main goals: on the one hand, general methods for perturbative quantum field theory and lattice gauge theories have been developed and combined in a novel way. On the other hand, calculational and mathematical tools have been established and advanced, and have been used to derive a large number of important predictions for low-energy precision physics and for high-energy collider experiments, in particular the Large Hadron Collider (LHC). In combination, these results have contributed, and will continue to contribute, to the determination of fundamental particle physics parameters with unprecedented accuracy and possibly to the identification of completely new phenomena.

Publications

• “QCD factorization for B → P P and B → P V decays,” Nucl. Phys. B 675 (2003) 333
  Beneke, Martin & Neubert, Matthias
  
• “Monte Carlo errors with less errors,” Comput. Phys. Commun. 156 (2004) 143 [Erratum: Comput. Phys. Commun. 176 (2007) 383]
  Wolff, Ulli
  
• “The Three loop splitting functions in QCD: The Nonsinglet case,” Nucl. Phys. B 688 (2004) 101
  Moch, S.; Vermaseren, J.A.M. & Vogt, A.
  
• “Computation of the strong coupling in QCD with two dynamical flavors,” Nucl. Phys. B 713 (2005) 378
  Della Morte, M.; Frezzotti, R.; Heitger, J.; Rolf, J.; Sommer, R. & Wolff, U.
  
• “Non-perturbative quark mass renormalization in two-flavor QCD,” Nucl. Phys. B 729 (2005) 117
  Della Morte, Michele; Hoffmann, Roland; Knechtli, Francesco; Rolf, Juri; Sommer, Rainer; Wetzorke, Ines & Wolff, Ulli
  
• “On lattice actions for static quarks,” JHEP 0508 (2005) 051
  Morte, Michele Della; Shindler, Andrea & Sommer, Rainer
  
• “The Four-loop QCD beta-function and anomalous dimensions,” Nucl. Phys. B 710 (2005) 485
  Czakon, M.
  
• “HMC algorithm with multiple time scale integration and mass preconditioning,” Comput. Phys. Commun. 174 (2006) 87
  Urbach, C.; Jansen, K.; Shindler, A. & Wenger, U.
  
• “ZFITTER: A Semi-analytical program for fermion pair production in e+ e- annihilation, from version 6.21 to version 6.42,” Comput. Phys. Commun. 174 (2006) 728
  Arbuzov, A.B.; Awramik, M.; Czakon, M.; Freitas, A.; Grünewald, M.W.; Mönig, K.; Riemann, S. & Riemann, T.
  
• “Dynamical twisted mass fermions with light quarks,” Phys. Lett. B 650 (2007) 304
  Boucaud, Ph.; Dimopoulos, P.; Farchioni, F.; Frezzotti, R.; Gimenez, V.; Herdoiza, G.; Jansen, K.; Lubicz, V.; Martinelli, G.; McNeile, C.; Michael, C.; Montvay, I.; Palao, D.; Papinutto, M.; Pickavance, J.; Rossi, G.C.; Scorzato, L.; Shindler, A.; Simula, S.; ... & Wenger, U.
  
• “Estimate of B(anti-B → X(s) gamma) at O(αs2),” Phys. Rev. Lett. 98 (2007) 022002
  Misiak, M.; Asatrian, H. M.; Bieri, K.; Czakon, M.; Czarnecki, A.; Ewerth, T.; Ferroglia, A.; Gambino, P.; Gorbahn, M.; Greub, C.; Haisch, U.; Hovhannisyan, A.; Hurth, T.; Mitov, A.; Poghosyan, V.; Ślusarczyk, M. & Steinhauser, M.
  
• “Heavy Quark Masses from Sum Rules in Four-Loop Approximation,” Nucl. Phys. B 778 (2007) 192
  Kühn, Johann H.; Steinhauser, Matthias & Sturm, Christian
  
• “Next-to-leading order QCD corrections to W+W- production via vector-boson fusion,” JHEP 0607 (2006) 015
  Bozzi, Giuseppe; Jäger, Barbara; Oleari, Carlo & Zeppenfeld, Dieter
  
• “NNLO QCD corrections to the anti-B → X(s) gamma matrix elements using interpolation in m(c),” Nucl. Phys. B 764 (2007) 62
  Misiak, Mikołaj & Steinhauser, Matthias
  
• “Algorithm FIRE – Feynman Integral REduction,” JHEP 0810 (2008) 107
  Smirnov, A.V
  
• “Dynamical Twisted Mass Fermions with Light Quarks: Simulation and Analysis Details,” Comput. Phys. Commun. 179 (2008) 695
  Boucaud, Ph.; Dimopoulos, P.; Farchioni, F.; Frezzotti, R.; Gimenez, V.; Herdoiza, G.; Jansen, K.; Lubicz, V.; Michael, C.; Münster, G.; Palao, D.; Rossi, G.C.; Scorzato, L.; Shindler, A.; Simula, S.; Sudmann, T.; Urbach, C. & Wenger, U.
  
• “High-Precision Charm-Quark Mass from Current-Current Correlators in Lattice and Continuum QCD,” Phys. Rev. D 78 (2008) 054513
  Allison, I.; Dalgic, E.; Davies, C. T. H.; Follana, E.; Horgan, R. R.; Hornbostel, K.; Lepage, G. P.; McNeile, C.; Shigemitsu, J.; Trottier, H.; Woloshyn, R. M.; Chetyrkin, K. G.; Kühn, J. H.; Steinhauser, M. & Sturm, C.
  
• “Order α4(s) QCD Corrections to Z and tau Decays,” Phys. Rev. Lett. 101 (2008) 012002
  Baikov, P. A.; Chetyrkin, K. G. & Kühn, J. H.
  
• “Theoretical status and prospects for top-quark pair production at hadron colliders,” Phys. Rev. D 78 (2008) 034003
  Moch, S. & Uwer, P.
  
• “Charm and Bottom Quark Masses: An Update,” Phys. Rev. D 80 (2009) 074010
  Chetyrkin, K. G.; Kühn, J. H.; Maier, A.; Maierhöfer, P.; Marquard, P.; Steinhauser, M. & Sturm, C.
  
• “Measuring the running top-quark mass,” Phys. Rev. D 80 (2009) 054009
  Langenfeld, U.; Moch, S. & Uwer, P.
  
• “On the generalized eigenvalue method for energies and matrix elements in lattice field theory,” JHEP 0904 (2009) 094
  collaboration, ALPHA; Blossier, Benoit; Morte, Michele Della; Hippel, Georg von; Mendes, Tereza & Sommer, Rainer
  
• “Pseudoscalar decay constants of kaon and D-mesons from Nf = 2 twisted mass Lattice QCD,” JHEP 0907 (2009) 043
  Collaboration, European Twisted Mass; Blossier, B.; Dimopoulos, P.; Frezzotti, R.; Haas, B.; Herdoiza, G.; Jansen, K.; Lubicz, V.; Mescia, F.; Palao, D.; Shindler, A.; Simula, S.; Tarantino, C.; Urbach, C. & Wenger, U.
  
• “Softgluon resummation for squark and gluino hadroproduction,” JHEP 0912 (2009) 041
  Beenakker, Wim; Brensing, Silja; Krämer, Michael; Kulesza, Anna; Laenen, Eric & Niessen, Irene
  
• “VBFNLO: A Parton level Monte Carlo for processes with electroweak bosons,” Comput. Phys. Commun. 180 (2009) 1661
  Arnold, K.; Bähr, M.; Bozzi, G.; Campanario, F.; Englert, C.; Figy, T.; Greiner, N.; Hackstein, C.; Hankele, V.; Jäger, B.; Klämke, G.; Kubocz, M.; Oleari, C.; Plätzer, S.; Prestel, S.; Worek, M. & Zeppenfeld, D.
  
• “Distributions and correlations for top quark pair production and decay at the Tevatron and LHC.,” Nucl. Phys. B 837 (2010) 90
  Bernreuther, Werner & Si, Zong-Guo
  
• “Finite top quark mass effects in NNLO Higgs boson production at LHC,” JHEP 1002 (2010) 025
  Pak, Alexey; Rogal, Mikhail & Steinhauser, Matthias
  
• “Light hadrons from lattice QCD with light (u,d), strange and charm dynamical quarks,” JHEP 1006 (2010) 111
  Baron, R.; Boucaud, Ph.; Carbonell, J.; Deuzeman, A.; Drach, V.; Farchioni, F.; Gimenez, V.; Herdoiza, G.; Jansen, K.; McNeile, C.; Michael, C.; Montvay, I.; Palao, D.; Pallante, E.; Pène, O.; Reker, S.; Urbach, C.; Wagner, M. & Wenger, U.
  
• “Light Meson Physics from Maximally Twisted Mass Lattice QCD,” JHEP 1008 (2010) 097
  Baron, Remi; Boucaud, Phillip; Dimopoulos, Petros; Frezzotti, Roberto; Palao, David; Rossi, Giancarlo; Farchioni, Federico; Münster, Gernot; Sudmann, Tobias; Gimenez, Vicent; Herdoiza, Gregorio; Jansen, Karl; Lubicz, Vittorio; Simula, Silvano; Michael, C.; Scorzato, L.; Shindler, A.; Urbach, C. & Wenger, U.
  
• “Light MSSM Higgs boson mass to three-loop accuracy,” JHEP 1008 (2010) 104
  Kant, P.; Harlander, R. V.; Mihaila, L. & Steinhauser, M.
  
• “Soft radiation in heavy-particle pair production: All-order colour structure and two-loop anomalous dimension,” Nucl. Phys. B 828 (2010) 69
  Beneke, M.; Falgari, P. & Schwinn, C.
  
• “Supersymmetric top and bottom squark production at hadron colliders,” JHEP 1008 (2010) 098
  Beenakker, Wim; Brensing, Silja; Krämer, Michael; Kulesza, Anna; Laenen, Eric & Niessen, Irene
  
• “The 3, 4, and 5-flavor NNLO Parton Distribution Functions from Deep-Inelastic-Scattering Data and at Hadron Colliders,” Phys. Rev. D 81 (2010) 014032
  Alekhin, S.; Blümlein, J.; Klein, S. & Moch, S.
  
• “The Multithreaded version of FORM,” Comput. Phys. Commun. 181 (2010) 1419
  Tentyukov, M. & Vermaseren, J.A.M.
  
• “HATHOR: HAdronic Top and Heavy quarks crOss section calculatoR,” Comput. Phys. Commun. 182 (2011) 1034
  Aliev, M.; Lacker, H.; Langenfeld, U.; Moch, S.; Uwer, P. & Wiedermann, M.
  
• “First Glimpses at Higgs’ face,” JHEP 1212 (2012) 045
  Espinosa, J. R.; Grojean, C.; Mühlleitner, M. & Trott, M.
  
• “NMSSM Higgs Benchmarks Near 125 GeV,” Nucl. Phys. B 860 (2012) 207
  King, S.F.; Mühlleitner, M. & Nevzorov, R.
  
• “Parton Distribution Functions and Benchmark Cross Sections at NNLO,” Phys. Rev. D 86 (2012) 054009
  Alekhin, S.; Blümlein, J. & Moch, S.
  
• “The strange quark mass and Lambda parameter of two flavor QCD,” Nucl. Phys. B 865 (2012) 397
  Fritzsch, Patrick; Knechtli, Francesco; Leder, Björn; Marinkovic, Marina; Schaefer, Stefan; Sommer, Rainer & Virotta, Francesco
  
• “Total Top-Quark Pair-Production Cross Section at Hadron Colliders Through O(αs4),” Phys. Rev. Lett. 110 (2013) 252004
  Czakon, Michał; Fiedler, Paul & Mitov, Alexander