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The SFB 676 has been funded by the DFG from 2006 to 2018. The project was completed with a special colloquium in June 2018. A book with the scientific results of the SFB 676 has been published in September 2018.

J. Haller and M. Grefe (eds.), “Particles, Strings and the Early Universe: The Structure of Matter and Space-Time,” Hamburg (2018), DOI: 10.3204/PUBDB-2018-00782.

Many research directions developed within the SFB 676 will be continued within the Cluster of Excellence "Quantum Universe" starting 1 January 2019.

B11 – Top-quark Physics at the LHC



Project Leaders

Sven-Olaf Moch (e-mail | group homepage)

Jürgen Reuter (e-mail | group homepage)


Abstract

This project is concerned with the heaviest known elementary particle, the top quark. The major part of the project aims at increasing the precision of the theoretical predictions of the top quark within the Standard Model of Particle Physics, particularly its mass and its production cross section and distributions at hadron colliders. Especially the top quark mass is of great interest due to its influence on the stability of the ground state of the electroweak theory and the lifetime of the universe. For these very accurate predictions, second and third order calculations in perturbation theory with massive degrees of freedom at the forefront of theoretical calculations are needed.

In the second part of the project, making use of the precise predictions of the first part, possible deviations in the properties of the top quark from those in the Standard Model are investigated. It is studied whether such deviations can be accessed at the Large Hadron Collider or future colliders, and how such deviations can be translated to possible new physics scenarios.


Researchers

Oleksandr Gituliar


Former members

Fabian Bach

Bijan Chokoufe Nejad

Maria Garzelli

Thomas Lübbert

Christian Weiss


Publications


Get these publications as bibtex-file


"Five-Particle Phase-Space Integrals in QCD"
Gituliar, Oleksandr and Magerya, Vitaly and Pikelner, Andrey
14th DESY Workshop on Elementary Particle Physics: Loops and Legs in Quantum Field Theory 2018 LL2018 St Goar, Germany, April 29-May 4, 2018 (2018)
eprint: 1808.05109 [hep-ph]

"Five-Particle Phase-Space Integrals in QCD"
Gituliar, O. and Magerya, V. and Pikelner, A.
JHEP 06, 099 (2018)
doi: 10.1007/JHEP06(2018)099
eprint: 1803.09084 [hep-ph]

"Fully-differential Top-Pair Production at a Lepton Collider: From Threshold to Continuum"
Bach, Fabian and Nejad, Bijan Chokoufé and Hoang, Andre and Kilian, Wolfgang and Reuter, Jürgen and Stahlhofen, Maximilian and Teubner, Thomas and Weiss, Christian
JHEP 03, 184 (2018)
doi: 10.1007/JHEP03(2018)184
eprint: 1712.02220 [hep-ph]

"Fuchsia and Master Integrals for Energy-Energy Correlations at NLO in QCD"
Gituliar, O. and Moch, S.
Proceedings, 41st International Conference of Theoretical Physics: Matter to the Deepest: Kroczyce, Poland, September 4-8, 2017, Acta Phys. Polon. (2017)
doi: 10.22323/1.290.0038, 10.5506/APhysPolB.48.2355
eprint: 1711.05549 [hep-ph]

"Splitting Functions at NNLO"
Gituliar, Oleksandr and Moch, Sven-Olaf
Proceedings, Parton Radiation and Fragmentation from LHC to FCC-ee: CERN, Geneva, Switzerland, November 22-23, 2016 (2017)
[ link ]

"NLO QCD predictions for off-shell t t and t t H production and decay at a linear collider"
Chokoufé Nejad, Bijan and Kilian, Wolfgang and Lindert, Jonas M. and Pozzorini, Stefano and Reuter, Jürgen and Weiss, Christian
JHEP 12, 075 (2016)
doi: 10.1007/JHEP12(2016)075
eprint: 1609.03390 [hep-ph]

"Determination of the top-quark mass from hadro-production of single top-quarks"
Alekhin, S. and Moch, S. and Thier, S.
Phys. Lett. B763, 341-346 (2016)
doi: 10.1016/j.physletb.2016.10.062
eprint: 1608.05212 [hep-ph]

"Calibration of the Top-Quark Monte Carlo Mass"
Kieseler, Jan and Lipka, Katerina and Moch, Sven-Olaf
Phys. Rev. Lett. 116, 162001 (2016)
doi: 10.1103/PhysRevLett.116.162001
eprint: 1511.00841 [hep-ph]

"Top pair threshold production at a linear collider with WHIZARD"
Bach, Fabian and Stahlhofen, Maximilian
Proceedings, 7th International Workshop on Top Quark Physics TOP2014: Cannes, France, September 28-October 3, 2014 (2014)
eprint: 1411.7318 [hep-ph]

"Anomalous top charged-current contact interactions in single top production at the LHC"
Bach, Fabian and Ohl, Thorsten
Phys.Rev. D90, 074022 (2014)
doi: 10.1103/PhysRevD.90.074022
eprint: 1407.2546 [hep-ph]

"A new observable to measure the top-quark mass at hadron colliders"
Alioli, Simone and Fernandez, Patricia and Fuster, Juan and Irles, Adrian and Moch, Sven-Olaf and others
Eur.Phys.J. C73, 2438 (2013)
doi: 10.1140/epjc/s10052-013-2438-2
eprint: 1303.6415 [hep-ph]

"The top quark and Higgs boson masses and the stability of the electroweak vacuum"
Alekhin, S. and Djouadi, A. and Moch, S.
Phys.Lett. B716, 214-219 (2012)
doi: 10.1016/j.physletb.2012.08.024
eprint: 1207.0980 [hep-ph]

"On top-pair hadro-production at next-to-next-to-leading order"
Moch, S. and Uwer, P. and Vogt, A.
Phys.Lett. B714, 48-54 (2012)
doi: 10.1016/j.physletb.2012.06.048
eprint: 1203.6282 [hep-ph]

"Hadronic top-quark pair-production with one jet and parton showering"
Alioli, Simone and Moch, Sven-Olaf and Uwer, Peter
JHEP 1201, 137 (2012)
doi: 10.1007/JHEP01(2012)137
eprint: 1110.5251 [hep-ph]

"HATHOR: HAdronic Top and Heavy quarks crOss section calculatoR"
Aliev, M. and Lacker, H. and Langenfeld, U. and Moch, S. and Uwer, P. and others
Comput.Phys.Commun. 182, 1034-1046 (2011)
doi: 10.1016/j.cpc.2010.12.040
eprint: 1007.1327 [hep-ph]

"WHIZARD: Simulating Multi-Particle Processes at LHC and ILC"
Kilian, Wolfgang and Ohl, Thorsten and Reuter, Jürgen
Eur.Phys.J. C71, 1742 (2011)
doi: 10.1140/epjc/s10052-011-1742-y
eprint: 0708.4233 [hep-ph]

"AutoDipole: Automated generation of dipole subtraction terms"
Hasegawa, K. and Moch, S. and Uwer, P.
Comput.Phys.Commun. 181, 1802-1817 (2010)
doi: 10.1016/j.cpc.2010.06.044
eprint: 0911.4371 [hep-ph]

"Measuring the running top-quark mass"
Langenfeld, U. and Moch, S. and Uwer, P.
Phys.Rev. D80, 054009 (2009)
doi: 10.1103/PhysRevD.80.054009
eprint: 0906.5273 [hep-ph]

"Theoretical status and prospects for top-quark pair production at hadron colliders"
Moch, Sven and Uwer, Peter
Phys.Rev. D78, 034003 (2008)
doi: 10.1103/PhysRevD.78.034003
eprint: 0804.1476 [hep-ph]


Theses


PhD thesis: "Top quark physics as a prime application of automated higher-order corrections."
Weiss, Christian
Universität Hamburg (2017)
doi: 10.3204/PUBDB-2017-07541
[ link ]

PhD thesis: "Scrutinizing the Top Quark at Lepton Colliders with Higher Orders"
Chokoufe Nejad, Bijan
Universität Hamburg (2017)
doi: 10.3204/PUBDB-2017-07624
[ link ]

Impressum  | last modified 17 Sep 2018