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Top-quark pole mass extraction at NNLO accuracy
/ Alekhin, S. (Hamburg U., Inst. Theor. Phys. II) ; Garzelli, M.V. (Hamburg U., Inst. Theor. Phys. II ; CERN) ; Mazzitelli, J. (PSI, Villigen) ; Moch, S.-O. (Hamburg U., Inst. Theor. Phys. II) ; Zenaiev, O. (Hamburg U., Inst. Theor. Phys. II)
We describe our recent NNLO QCD extraction of the top-quark pole mass from fits to experimental data on total inclusive and normalized (multi)-differential cross sections for $t\bar{t} + X$ hadroproduction, using as input various modern PDF + $\alpha_s(M_Z)$ sets. [...]
CERN-TH-2024-225 ; arXiv:2412.20259.
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NNLO fits of top-quark mass using total, single-differential and double-differential $t\bar{t}+X$ cross-section data
/ Alekhin, S. (Hamburg U., Inst. Theor. Phys. II) ; Garzelli, M.V. (Hamburg U., Inst. Theor. Phys. II ; CERN ; Cagliari U.) ; Mazzitelli, J. (PSI, Villigen) ; Moch, S.-O. (Hamburg U., Inst. Theor. Phys. II) ; Zenaiev, O. (Hamburg U., Inst. Theor. Phys. II)
We describe the fits of the top-quark mass value at NNLO using as input the double-differential distributions in rapidity and invariant mass of $t\bar{t}$ pairs obtained by the ATLAS and CMS collaborations from unfolding of their experimental data to the parton level, compared to NNLO theory predictions. We consider different state-of-the-art PDF sets, finding results of the fits compatible among each other within uncertainties. [...]
arXiv:2412.14348; CERN-TH-2024-220.-
2024-12-18 - 4 p.
- Published in : PoS: ICHEP2024 (2024) , pp. 393
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Updated predictions for toponium production at the LHC
/ Garzelli, M.V. (King's Coll. London ; CERN ; Hamburg U., Inst. Theor. Phys. II) ; Limatola, G. (Hamburg U., Inst. Theor. Phys. II ; DESY) ; Moch, S.-O. (Hamburg U., Inst. Theor. Phys. II) ; Steinhauser, M. (KIT, Karlsruhe, TTP) ; Zenaiev, O. (Hamburg U., Inst. Theor. Phys. II)
We provide an update on QCD predictions for top-quark pair production close to threshold including bound state effects at the Large Hadron Collider. [...]
CERN-TH-2024-222 ; DESY 24-207 ; P3H-24-104 ; TTP24-048 ; arXiv:2412.16685.
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Heavy meson hadroproduction: open issues
/ Garzelli, Maria Vittoria (Florence U. ; INFN, Florence) ; Alekhin, Sergey (Hamburg U., Inst. Theor. Phys. II) ; Benzke, Michael (Hamburg U., Inst. Theor. Phys. II) ; Kniehl, Bernd (Hamburg U., Inst. Theor. Phys. II) ; Moch, Sven-Olaf (Hamburg U., Inst. Theor. Phys. II) ; Zenaiev, Oleksandr (CERN)
We discuss open issues in the description of single-inclusive open heavy-meson production in $pp$ and $pA$ collisions, considering different flavour-number schemes. Solving these issues is important for improving the accuracy of PDF fits and of predictions in high-energy astroparticle physics..
SISSA, 2019 - 10 p.
- Published in : PoS RADCOR2019 (2019) 048
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In : 14th International Symposium on Radiative Corrections : Application of Quantum Field Theory to Phenomenology, Avignon, France, 8 - 13 Sep 2019, pp.048
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High precision fundamental constants at the TeV scale
/ Moch, S. (Hamburg U., Inst. Theor. Phys. II ; DESY, Zeuthen) ; Weinzierl, S. (U. Mainz, PRISMA) ; Alekhin, S. (DESY, Zeuthen ; Serpukhov, IHEP) ; Blumlein, J. (DESY, Zeuthen) ; de la Cruz, L. (UNAM, Mexico) ; Dittmaier, S. (Freiburg U.) ; Dowling, M. (DESY, Zeuthen) ; Erler, J. (U. Mainz, PRISMA ; UNAM, Mexico) ; Espinosa, J.R. (ICREA, Barcelona ; Barcelona, IFAE) ; Fuster, J. (Valencia U., IFIC ; Valencia U.) et al.
This report summarizes the proceedings of the 2014 Mainz Institute for Theoretical Physics (MITP) scientific program on "High precision fundamental constants at the TeV scale". [...]
arXiv:1405.4781 ; DESY-14-081 ; MITP-14-036 ; MITP-14-036.
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2014. - 57 p.
Preprint - Full text
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Ringberg Workshop: New Trends in HERA Physics 2011
25 - 28 Sep 2011
- Ringberg Castle, Tegernsee, Germany
/ Grindhammer, Guenter (ed.) (Munich, Max Planck Inst.); Kniehl, Bernd A. (ed.) (Hamburg U., Inst. Theor. Phys. II); Kramer, Gustav (ed.) (Hamburg U., Inst. Theor. Phys. II); Ochs, Wolfgang (ed.) (Munich, Max Planck Inst.)
2012
- Published in : Nucl. Phys. B Proc. Suppl.: 222-224 (2012)
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New Trends in HERA Physics 2011 Ringberg Workshop - HERA Physics 2011
25 - 28 Sep 2011
- Tegernsee, Germany
/ Grindhammer, Guenter (ed.) (Munich, Max Planck Inst.); Kniehl, Bernd A. (ed.) (Hamburg U., Inst. Theor. Phys. II); Kramer, Gustav (ed.) (Hamburg U., Inst. Theor. Phys. II); Ochs, Wolfgang (ed.) (Munich, Max Planck Inst.)
2012
- Published in : Nucl. Phys. B, Proc. Suppl. 222-224 (2012)
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ALP-ine quests at the LHC: hunting axion-like particles via peaks and dips in $t \bar{t}$ production
/ Anuar, Afiq (CERN) ; Biekötter, Anke (Mainz U., Inst. Phys. ; U. Mainz, PRISMA) ; Biekötter, Thomas (KIT, Karlsruhe, TP) ; Grohsjean, Alexander (Hamburg U.) ; Heinemeyer, Sven (Madrid, IFT) ; Jeppe, Laurids (DESY) ; Schwanenberger, Christian (Hamburg U. ; DESY) ; Weiglein, Georg (DESY ; Hamburg U., Inst. Theor. Phys. II)
We present an analysis of the sensitivity of current and future LHC searches for new spin-0 particles in top-anti-top-quark ($t\bar{t}$) final states, focusing on generic axion-like particles (ALPs) that are coupled to top quarks and gluons. [...]
arXiv:2404.19014 ; DESY-24-059 ; IFT-UAM/CSIC-24-042 ; KA-TP-06-2024 ; MITP-24-044.
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35 p.
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$\alpha_s$(2019): Precision measurements of the QCD coupling
/ d'Enterria, David (CERN) ; Kluth, Stefan (Munich, Max Planck Inst.) ; Alekhin, S. (Hamburg U.) ; Baikov, P.A. (Lomonosov Moscow State U.) ; Banfi, A. (Sussex U.) ; Barreiro, F. (Madrid, Autonoma U.) ; Bazavov, A. (Michigan State U., East Lansing (main)) ; Bethke, S. ; Blümlein, J. (DESY, Zeuthen) ; Boito, D. (Sao Paulo U.) et al.
This document collects a written summary of all contributions presented at the workshop "$\alpha_s$(2019): Precision measurements of the strong coupling" held at ECT* (Trento) in Feb. 11--15, 2019. [...]
arXiv:1907.01435.-
SISSA, 2019-07-09 - 154 p.
- Published in : PoS: ALPHAS2019 (2019) , pp. 001
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In : Workshop on precision measurements of the QCD coupling constant (alphas-2019), Trento, Italy, 11 - 15 Feb 2019, pp.001
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