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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 : 10.22323/1.478.0320
Fulltext: 2412.20259 - PDF; document - PDF;
In : 12th Edition of the Large Hadron Collider Physics Conference, Boston, United States, 3 - 7 Jun 2024, pp.
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2.
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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
Fulltext: PDF;
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3.
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Status of QCD precision predictions for Drell-Yan processes
/ Alekhin, S. (Hamburg U., Inst. Theor. Phys. II) ; Amoroso, S. (DESY) ; Buonocore, L. (CERN) ; Huss, A. (CERN) ; Kallweit, S. (Zurich U.) ; Kardos, A. (U. Debrecen, Inst. Phys. ; MTA-DE, Debrecen ; Eotvos U.) ; Michel, J. (Amsterdam U. ; NIKHEF, Amsterdam) ; Moch, S. (Hamburg U., Inst. Theor. Phys. II) ; Petriello, F. (Northwestern U. ; Argonne) ; Rottoli, L. (Zurich U.) et al.
We compute differential distributions for Drell-Yan processes at the LHC and the Tevatron colliders at next-to-next-to-leading order in perturbative QCD, including fiducial cuts on the decay leptons in the final state. [...]
arXiv:2405.19714 ; DESY 24-073 ; CERN-TH-2024-068 ; ZU-TH 26/24 ; MPP-2024-106.
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31 p.
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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The Large Hadron-Electron Collider at the HL-LHC
/ FCC-he Study Group Collaboration
The Large Hadron electron Collider, LHeC, is the means to move deep inelastic physics following HERA to the energy frontier of particle physics as it is being exploited by the HL-LHC. The paper presents a thorough update of the initial LHeC Conceptual Design Report (CDR) published in 2012. [...]
arXiv:2007.14491; CERN-ACC-Note-2020-0002; JLAB-ACP-20-3180.-
Geneva : CERN, 2021-12-20 - 364 p.
- Published in : J. Phys. G 48 (2021) 110501
Fulltext: arXiv:2007.14491 - PDF; 2007.14491 - PDF; Fulltext from Publisher: PDF; Preprint: PDF; External link: JLab Document Server
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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
Fulltext: PDF;
In : Workshop on precision measurements of the QCD coupling constant (alphas-2019), Trento, Italy, 11 - 15 Feb 2019, pp.001
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7.
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$\alpha_s$(2019) discussions summary
/ Alekhin, Sergey (Hamburg U., Inst. Theor. Phys. II ; Serpukhov, IHEP) ; Barreiro, Fernando (U. Autonoma, Madrid (main)) ; Bethke, Siegfried (Munich, Max Planck Inst.) ; Brambilla, Nora (Munich, Tech. U.) ; Britzger, Daniel (Munich, Max Planck Inst.) ; Brodsky, Stanley J (SLAC) ; Camarda, Stefano (CERN) ; D'Enterria, David (CERN) ; Dalla Brida, Mattia (INFN, Milan Bicocca ; Milan Bicocca U.) ; Golterman, Maarten (San Francisco State U.) et al.
A summary of the main points of discussion raised during the talks and their follow-up questions,as well as in the round table of the last day of the $α_s$ (2019) workshop, is presented. The discussions not only focused on particular issues affecting each one of the individual $α_s$ extractions, but also on the current PDG categorization of $α_s$ measurements and on the methods used to average them into a single $α_s$ ($m_Z$) value. [...]
SISSA, 2019 - 8 p.
- Published in : PoS ALPHAS2019 (2019) 026
Fulltext from publisher: PDF;
In : Workshop on precision measurements of the QCD coupling constant (alphas-2019), Trento, Italy, 11 - 15 Feb 2019, pp.026
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8.
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Standard Model processes
/ Mangano, M.L. (CERN) ; Zanderighi, G. (CERN) ; Aguilar-Saavedra, Juan Antonio (Granada U., Theor. Phys. Astrophys.) ; Alekhin, S. (Hamburg U., Inst. Theor. Phys. II ; Serpukhov, IHEP) ; Badger, S. (U. Edinburgh, Higgs Ctr. Theor. Phys.) ; Bauer, C.W. (LBL, Berkeley ; UC, Berkeley) ; Becher, T. (Bern U.) ; Bertone, V. (Oxford U., Theor. Phys.) ; Bonvini, M. (Oxford U., Theor. Phys.) ; Boselli, S. (Pavia U. ; INFN, Pavia) et al.
This report summarises the properties of Standard Model processes at the 100 TeV pp collider. We document the production rates and typical distributions for a number of benchmark Standard Model processes, and discuss new dynamical phenomena arising at the highest energies available at this collider. [...]
arXiv:1607.01831; CERN-TH-2016-112; CERN-TH-2016-112; CERN-ATS-2016-003.-
2017-06-22 - 257 p.
- Published in : 10.23731/CYRM-2017-003.1
Fulltext: fermilab-fn-1021-t - PDF; arXiv:1607.01831 - PDF; Published version from CERN: PDF; External link: FERMILABFN
In : Physics at the FCC-hh, a 100 TeV $pp$ collider, pp.1-254
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9.
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Proceedings, High-Precision $\alpha_s$ Measurements from LHC to FCC-ee : Geneva, Switzerland, October 2-13, 2015
Workshop on High-precision $\alpha_s$ measurements from LHC to FCC-ee
12 - 13 Oct 2015
- Geneva, Switzerland
/ d'Enterria, David (ed.) (CERN); Skands, Peter Z. (ed.) (Monash U.); Alekhin, S. (U. Hamburg (main)); Banfi, A.; Bethke, S.; Blümlein, J. (DESY); Chetyrkin, K.G. (KIT, Karlsruhe); Dissertori, G. (Zurich, ETH); Garcia i Tormo, X.; Hoang, A.H. (Vienna U.) et al.
This document provides a writeup of all contributions to the workshop on "High precision measurements of $\alpha_s$: From LHC to FCC-ee" held at CERN, Oct. 12--13, 2015. [...]
Geneva : CERN, 2015 - 135 p.
arXiv:1512.05194 .- CERN-PH-TH-2015-299 .- COEPP-MN-15-13 .- FERMILAB-CONF-15-610-T .- CERN-PH-TH-2015-299 .- COEPP-MN-15-13 .- FERMILAB-CONF-15-610-T
- Published in : (2015)
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