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
  M. Beneke and M. Neubert
  
• “Monte Carlo errors with less errors,” Comput. Phys. Commun. 156 (2004) 143 [Erratum: Comput. Phys. Commun. 176 (2007) 383]
  U. Wolff [ALPHA Collaboration]
  
• “The Three loop splitting functions in QCD: The Nonsinglet case,” Nucl. Phys. B 688 (2004) 101
  S. Moch, J. A. M. Vermaseren and A. Vogt
  
• “Computation of the strong coupling in QCD with two dynamical flavors,” Nucl. Phys. B 713 (2005) 378
  M. Della Morte et al. [ALPHA Collaboration]
  
• “Non-perturbative quark mass renormalization in two-flavor QCD,” Nucl. Phys. B 729 (2005) 117
  M. Della Morte et al. [ALPHA Collaboration]
  
• “On lattice actions for static quarks,” JHEP 0508 (2005) 051
  M. Della Morte, A. Shindler and R. Sommer
  
• “The Four-loop QCD beta-function and anomalous dimensions,” Nucl. Phys. B 710 (2005) 485
  M. Czakon
  
• “HMC algorithm with multiple time scale integration and mass preconditioning,” Comput. Phys. Commun. 174 (2006) 87
  C. Urbach, K. Jansen, A. Shindler and U. Wenger
  
• “Next-to-leading order QCD corrections to W+W- production via vector-boson fusion,” JHEP 0607 (2006) 015
  B. Jäger, C. Oleari and D. Zeppenfeld
  
• “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
  A. B. Arbuzov, M. Awramik, M. Czakon, A. Freitas, M. W. Grunewald, K. M¨onig, S. Riemann and T. Riemann
  
• “Dynamical twisted mass fermions with light quarks,” Phys. Lett. B 650 (2007) 304
  P. Boucaud et al. [ETM Collaboration]
  
• “Estimate of B(anti-B → X(s) gamma) at O(αs2),” Phys. Rev. Lett. 98 (2007) 022002
  M. Misiak et al.
  
• “Heavy Quark Masses from Sum Rules in Four-Loop Approximation,” Nucl. Phys. B 778 (2007) 192
  J. H. Kühn, M. Steinhauser and C. Sturm
  
• “NNLO QCD corrections to the anti-B → X(s) gamma matrix elements using interpolation in m(c),” Nucl. Phys. B 764 (2007) 62
  M. Misiak and M. Steinhauser
  
• “Algorithm FIRE – Feynman Integral REduction,” JHEP 0810 (2008) 107
  A. V. Smirnov
  
• “Dynamical Twisted Mass Fermions with Light Quarks: Simulation and Analysis Details,” Comput. Phys. Commun. 179 (2008) 695
  P. Boucaud et al. [ETM Collaboration]
  
• “High-Precision Charm-Quark Mass from Current-Current Correlators in Lattice and Continuum QCD,” Phys. Rev. D 78 (2008) 054513
  I. Allison et al. [HPQCD Collaboration]
  
• “Order α4(s) QCD Corrections to Z and tau Decays,” Phys. Rev. Lett. 101 (2008) 012002
  P. A. Baikov, K. G. Chetyrkin and J. H. Kühn
  
• “Theoretical status and prospects for top-quark pair production at hadron colliders,” Phys. Rev. D 78 (2008) 034003
  S. Moch and P. Uwer
  
• “Charm and Bottom Quark Masses: An Update,” Phys. Rev. D 80 (2009) 074010
  K. G. Chetyrkin, J. H. Kühn, A. Maier, P. Maierhofer, P. Marquard, M. Steinhauser and C. Sturm
  
• “Measuring the running top-quark mass,” Phys. Rev. D 80 (2009) 054009
  U. Langenfeld, S. Moch and P. Uwer
  
• “On the generalized eigenvalue method for energies and matrix elements in lattice field theory,” JHEP 0904 (2009) 094
  B. Blossier, M. Della Morte, G. von Hippel, T. Mendes and R. Sommer
  
• “Pseudoscalar decay constants of kaon and D-mesons from Nf = 2 twisted mass Lattice QCD,” JHEP 0907 (2009) 043
  B. Blossier et al. [ETM Collaboration]
  
• “Softgluon resummation for squark and gluino hadroproduction,” JHEP 0912 (2009) 041
  W. Beenakker, S. Brensing, M. Krämer, A. Kulesza, E. Laenen and I. Niessen
  
• “VBFNLO: A Parton level Monte Carlo for processes with electroweak bosons,” Comput. Phys. Commun. 180 (2009) 1661
  K. Arnold et al.
  
• “Distributions and correlations for top quark pair production and decay at the Tevatron and LHC.,” Nucl. Phys. B 837 (2010) 90
  W. Bernreuther and Z. G. Si
  
• “Finite top quark mass effects in NNLO Higgs boson production at LHC,” JHEP 1002 (2010) 025
  A. Pak, M. Rogal and M. Steinhauser
  
• “Light hadrons from lattice QCD with light (u,d), strange and charm dynamical quarks,” JHEP 1006 (2010) 111
  R. Baron et al.
  
• “Light Meson Physics from Maximally Twisted Mass Lattice QCD,” JHEP 1008 (2010) 097
  R. Baron et al. [ETM Collaboration]
  
• “Light MSSM Higgs boson mass to three-loop accuracy,” JHEP 1008 (2010) 104
  P. Kant, R. V. Harlander, L. Mihaila and M. Steinhauser
  
• “Soft radiation in heavy-particle pair production: All-order colour structure and two-loop anomalous dimension,” Nucl. Phys. B 828 (2010) 69
  M. Beneke, P. Falgari and C. Schwinn
  
• “Supersymmetric top and bottom squark production at hadron colliders,” JHEP 1008 (2010) 098
  W. Beenakker, S. Brensing, M. Kr¨amer, A. Kulesza, E. Laenen and I. Niessen
  
• “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
  S. Alekhin, J. Blümlein, S. Klein and S. Moch
  
• “The Multithreaded version of FORM,” Comput. Phys. Commun. 181 (2010) 1419
  M. Tentyukov and J. A. M. Vermaseren
  
• “HATHOR: HAdronic Top and Heavy quarks crOss section calculatoR,” Comput. Phys. Commun. 182 (2011) 1034
  M. Aliev, H. Lacker, U. Langenfeld, S. Moch, P. Uwer and M. Wiedermann
  
• “First Glimpses at Higgs’ face,” JHEP 1212 (2012) 045
  J. R. Espinosa, C. Grojean, M. Mühlleitner and M. Trott
  
• “NMSSM Higgs Benchmarks Near 125 GeV,” Nucl. Phys. B 860 (2012) 207
  S. F. King, M. Mühlleitner and R. Nevzorov
  
• “Parton Distribution Functions and Benchmark Cross Sections at NNLO,” Phys. Rev. D 86 (2012) 054009
  S. Alekhin, J. Blümlein and S. Moch
  
• “The strange quark mass and Lambda parameter of two flavor QCD,” Nucl. Phys. B 865 (2012) 397
  P. Fritzsch, F. Knechtli, B. Leder, M. Marinkovic, S. Schaefer, R. Sommer and F. Virotta
  
• “Total Top-Quark Pair-Production Cross Section at Hadron Colliders Through O(αs4),” Phys. Rev. Lett. 110 (2013) 252004
  M. Czakon, P. Fiedler and A. Mitov