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2025-01-04
04:17
UHECR measurements and physics at man-made accelerators: mutual constraints / Garzelli, Maria Vittoria (Hamburg U., Inst. Theor. Phys. II ; CERN)
Measurements of the products of UHECR interactions with the Earth's atmosphere, as obtained in Extended Air Shower experiments, offer important information concerning hadronic interactions, which for some aspects overlaps and for many others complements the information extracted by measurements of collisions at human-made accelerators. [...]
CERN-TH-2024-227 ; arXiv:2501.00178. - 8.
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2025-01-01
04:35
Precise Determination of the Strong Coupling Constant from Dijet Cross Sections up to the Multi-TeV Range / Ahmadova, Fazila (Garching, Max Planck Inst. ; Zurich U.) ; Britzger, Daniel (Garching, Max Planck Inst.) ; Chen, Xuan (Shandong U.) ; Gäßler, Johannes (KIT, Karlsruhe, ETP) ; Gehrmann-De Ridder, Aude (Zurich U. ; Zurich, ETH) ; Gehrmann, Thomas ; Glover, Nigel (Zurich U. ; Durham U., IPPP) ; Gwenlan, Claire (Oxford U.) ; Heinrich, Gudrun (KIT, Karlsruhe, TP) ; Huss, Alexander (CERN) et al.
We determine the value of the strong coupling $\alpha_\text{s}$ and study its running over a wide range of scales as probed by the dijet production process at hadron colliders, based on an NNLO QCD analysis of LHC dijet data. [...]
CERN-TH-2024-224 ; KA-TP-25-2024 ; MPP-2024-260 ; ZU-TH/01/25 ; arXiv:2412.21165. - 5.
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2025-01-01
04:33
Top-quark pole mass extraction at NNLO accuracy / Alekhin, S. ; Garzelli, M.V. ; Mazzitelli, J. ; Moch, S.-O. ; Zenaiev, O.
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. - 6.
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2025-01-01
04:32
Planar Six-Point Feynman Integrals for Four-Dimensional Gauge Theories / Abreu, Samuel (CERN ; U. Edinburgh, Higgs Ctr. Theor. Phys.) ; Monni, Pier Francesco (CERN) ; Page, Ben (Gent U.) ; Usovitsch, Johann (CERN ; Humboldt U., Berlin, Inst. Math. ; Humboldt U., Berlin)
We compute all planar two-loop six-point Feynman integrals entering scattering observables in massless gauge theories such as QCD. [...]
CERN-TH-2024-221 ; HU-EP-24/40-RTG ; arXiv:2412.19884. - 32.
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2024-12-25
06:22
Fractional Hydrodynamic Transport from the Witten Anomaly / Davighi, Joe ; Lohitsiri, Nakarin ; Poovuttikul, Napat
We study the physical consequences of 't Hooft anomalies in the high-temperature limit of relativistic quantum field theories with $SU(2)$, or more generally $USp(2N)$, global symmetry. [...]
CERN-TH-2024-223 ; arXiv:2412.17650. - 30.
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2024-12-25
05:19
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. - 10.
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2024-12-24
04:33
Mixed QCD-EW corrections to the neutral-current Drell-Yan process / Armadillo, Tommaso (Milan U. ; INFN, Milan) ; Bonciani, Roberto (Florence U. ; INFN, Rome ; Rome U.) ; Buonocore, Luca (CERN) ; Devoto, Simone (Gent U.) ; Grazzini, Massimiliano (Zurich U.) ; Kallweit, Stefan (Zurich U.) ; Rana, Narayan (NISER, Jatni) ; Vicini, Alessandro (Milan U. ; INFN, Milan)
We report on the complete computation of the mixed QCD-electroweak corrections to the neutral-current Drell-Yan process. [...]
CERN-TH-2024-199 ; ZU-TH 56/24 ; TIF-UNIMI-2024-18 ; arXiv:2412.16095. - 27.
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2024-12-24
04:31
Generalized Wilson lines and the gravitational scattering of spinning bodies / Bonocore, Domenico (Munich, Tech. U.) ; Kulesza, Anna (Munster U., ITP) ; Pirsch, Johannes (Munster U., ITP)
A generalization of Wilson line operators at subleading power in the soft expansion has been recently introduced as an efficient building block of gravitational scattering amplitudes for non-spinning objects. [...]
MS-TP-24-34 ; TUM-HEP-1547/24 ; CERN-TH-2022-143 ; arXiv:2412.16049. - 48.
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2024-12-21
04:26
Discriminating between Pseudoscalar Higgs and Toponium States at the LHC and Beyond / Djouadi, Abdelhak (Annecy, LAPP ; Granada U., Theor. Phys. Astrophys.) ; Ellis, John (King's Coll. London ; CERN) ; Quevillon, Jeremie (Annecy, LAPP)
We discuss ways to discriminate at hadron colliders between a quasi-bound toponium state and a pseudoscalar Higgs boson A, as predicted in many extensions of the Standard Model. [...]
KCL-PH-TH/2024-77 ; CERN-TH-2024-219 ; arXiv:2412.15138. - 14.
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2024-12-21
04:24
On Determining $\alpha_s(m_Z)$ from Dijets in $e^+e^-$ Thrust / Benitez, Miguel A. (Salamanca U., IUFFyM) ; Hoang, Andre H. (Vienna U.) ; Mateu, Vicent (Salamanca U., IUFFyM) ; Stewart, Iain W. (Vienna U. ; MIT) ; Vita, Gherardo (CERN)
We update a previous N$^3$LL$^\prime$+${\cal O}(\alpha_s^3)$ determination of the strong coupling from a global fit to thrust data by including newly available perturbative ingredients, upgrading the renormalization scales to include a fully canonical scaling region, and implementing the log resummation in a way which ensures the integrated cross section is unaffected by the the leading $1/Q$ hadronization power corrections. [...]
MIT-CTP 5746 ; CERN-TH-2024-142 ; UWThPh2024-8 ; arXiv:2412.15164. - 66.
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