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The inclusive Higgs boson cross-section in gluon-gluon fusion in soft-virtual approximation at fourth order in QCD
/ Das, Goutam (RWTH Aachen University) ; Moch, Sven-Olaf (Hamburg University (DE))
We present precise results for the inclusive Higgs boson cross-section in gluon-gluon fusion at the LHC considering state-of-the-art fourth-order results in perturbative QCD arising from the dominant soft and virtual gluon emissions. Utilizing four-loop QCD results for the gluon-form factor, the splitting function and related anomalous dimen- sions, we study the effects of threshold enhanced soft gluon emissions and estimate their impact on the total cross-section at the fourth order. [...]
LHCHWG-2025-010.-
Geneva : CERN, 2025 - 8.
Fulltext: PDF;
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Top-quark pole mass extraction at NNLO accuracy
/ Alekhin, Sergey (Hamburg U., Inst. Theor. Phys. II) ; Garzelli, Maria Vittoria (Hamburg U., Inst. Theor. Phys. II ; CERN) ; Mazzitelli, Javier (PSI, Villigen) ; Moch, Sven-Olaf (Hamburg U., Inst. Theor. Phys. II) ; Zenaiev, Oleksandr (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. We find top-quark mass values compatible among each other and with the PDG 2024 preferred value..
arXiv:2412.20259; CERN-TH-2024-225.-
2024-12-31 - 6 p.
- Published in : PoS: LHCP2024 (2025) , pp. 320
Fulltext: 2412.20259 - PDF; document - PDF;
In : 12th Edition of the Large Hadron Collider Physics Conference, Boston, United States, 3 - 7 Jun 2024, pp.320
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Updated predictions for toponium production at the LHC
/ Garzelli, M.V. (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. We compute the top-quark pair invariant mass distribution $d\sigma/dM_{t\bar{t}}$, including Coulomb resummation for bound-state effects, as well as threshold resummation for emissions of soft and collinear gluons. [...]
arXiv:2412.16685; CERN-TH-2024-222; DESY 24-207; P3H-24-104; TTP24-048.-
2025-05-12 - 5 p.
- Published in : Phys. Lett. B 866 (2025) 139532
Fulltext: 2412.16685 - PDF; publication - PDF;
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4.
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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, Sergey (Hamburg U., Inst. Theor. Phys. II) ; Garzelli, Maria Vittoria (Hamburg U., Inst. Theor. Phys. II ; CERN ; Cagliari U.) ; Mazzitelli, Javier (PSI, Villigen) ; Moch, Sven-Olaf (Hamburg U., Inst. Theor. Phys. II) ; Zenaiev, Oleksandr (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.-
2024-12-29 - 4 p.
- Published in : PoS ICHEP2024 (2024) 393
Fulltext: 2412.14348 - PDF; document - PDF;
In : 42nd International Conference on High Energy Physics (ICHEP 2024), Prague, Czech Republic, 18 - 24 Jul 2024, pp.393
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5.
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Exploring SMEFT couplings using the forward–backward asymmetry in neutral current Drell–Yan production at the LHC
/ Abdolmaleki, Hamed (IPM, Tehran ; Lorestan U.) ; Amoroso, Simone (DESY) ; Britzger, Daniel (Munich, Max Planck Inst.) ; Dattola, Filippo (DESY) ; Fiaschi, Juri (INFN, Milan Bicocca ; Milan Bicocca U.) ; Giuli, Francesco (CERN) ; Glazov, Alexander (DESY) ; Hautmann, Francesco (CERN ; Antwerp U. ; Oxford U.) ; Luszczak, Agnieszka (Cracow Tech. U.) ; Taheri Monfared, Sara (DESY) et al.
Neutral current Drell-Yan (DY) lepton-pair production is considered in the framework of the Standard Model Effective Field Theory (SMEFT). Using the open-source fit platform xFitter, we investigate the impact of high-statistics measurements of the neutral current DY (NCDY) forward-backward asymmetry $A_{\rm{FB}}$ near the weak boson mass scale in the present and forthcoming stages of the Large Hadron Collider (LHC). [...]
arXiv:2310.19638; DESY-23-160.-
2024-12-09 - 22 p.
- Published in : Eur. Phys. J. C 84 (2024) 1277
Fulltext: 2310.19638 - PDF; document - PDF;
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TF07 Snowmass Report: Theory of Collider Phenomena
/ Maltoni, F. (Louvain U., CP3 ; INFN, Bologna ; U. Bologna, DIFA) ; Su, S. (Arizona U.) ; Thaler, J. (MIT, Cambridge, CTP ; IAIFI, Cambridge ; Harvard U.) ; Aarrestad, T.K. (CERN) ; Aboubrahim, A. (Munster U., ITP) ; Adhikari, S. (Kansas U. ; Johns Hopkins U.) ; Agapov, I. (DESY) ; Agashe, K. (Maryland U.) ; Agrawal, P. (Oxford U., Theor. Phys.) ; Airen, S. (Maryland U.) et al.
Theoretical research has long played an essential role in interpreting data from high-energy particle colliders and motivating new accelerators to advance the energy and precision frontiers. [...]
arXiv:2210.02591 ; FERMILAB-FN-1203-QIS.
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22.
Fermilab Library Server - eConf - Fulltext - Fulltext
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Report of the Topical Group on Top quark physics and heavy flavor production for Snowmass 2021
/ Schwienhorst, Reinhard (ed.) (Michigan State U., East Lansing (main)) ; Wackeroth, Doreen (ed.) (SUNY, Buffalo) ; Agashe, K. (Maryland U.) ; Airen, S. (Maryland U.) ; Alioli, S. (INFN, Milan Bicocca ; Milan Bicocca U.) ; Aparisi, J. (Valencia U., IFIC) ; Bevilacqua, G. (MTA-DE, Debrecen ; Debrecen U.) ; Bi, H.Y. (RWTH Aachen U.) ; Brock, R. (Michigan State U.) ; Camacho, A. Gutierrez (Valencia U., IFIC) et al.
This report summarizes the work of the Energy Frontier Topical Group on EW Physics: Heavy flavor and top quark physics (EF03) of the 2021 Community Summer Study (Snowmass). [...]
arXiv:2209.11267.
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97.
Fulltext
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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
Fulltext: PDF;
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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Improved constraints on parton distributions using LHCb, ALICE and HERA heavy-flavour measurements and implications for the predictions for prompt atmospheric-neutrino fluxes
/ Zenaiev, O. (Hamburg U., Inst. Theor. Phys. II) ; Garzelli, M.V. (Florence U. ; INFN, Florence ; Tubingen U.) ; Lipka, K. (DESY) ; Moch, S.O. (Hamburg U., Inst. Theor. Phys. II) ; Cooper-Sarkar, A. (Oxford U.) ; Olness, F. (Southern Methodist U.) ; Geiser, A. (DESY) ; Sigl, G. (Hamburg U., Inst. Theor. Phys. II)
/PROSA Collaboration
The impact of measurements of heavy-flavour production in deep inelastic $ep$ scattering and in $pp$ collisions on parton distribution functions is studied in a QCD analysis at next-to-leading order. Recent combined results of inclusive and heavy-flavour production cross sections in deep inelastic scattering at HERA are investigated together with heavy-flavour production measurements at the LHC. [...]
arXiv:1911.13164; DESY-19-211; DESY 19-211.-
2020-04-20 - 24 p.
- Published in : JHEP 2004 (2020) 118
Article from SCOAP3: scoap3-fulltext - PDF; scoap - PDF; Fulltext: PDF;
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