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2021-11-29
04:05
Viscous absorption of ultra-high-frequency gravitons / Giovannini, Massimo (CERN ; INFN, Milan Bicocca)
The high-frequency gravitons can be absorbed by the first and second viscosities of the post-inflationary plasma as the corresponding wavelengths reenter the Hubble radius prior to big-bang nucleosynthesis. [...]
arXiv:2111.13544. - 10 p.
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2021-11-29
04:01
Particle Graph Autoencoders and Differentiable, Learned Energy Mover's Distance / Tsan, Steven (UC, San Diego) ; Kansal, Raghav (UC, San Diego) ; Aportela, Anthony (UC, San Diego) ; Diaz, Daniel (UC, San Diego) ; Duarte, Javier (UC, San Diego) ; Krishna, Sukanya (UC, San Diego) ; Mokhtar, Farouk (UC, San Diego) ; Vlimant, Jean-Roch (Caltech) ; Pierini, Maurizio (CERN)
Autoencoders have useful applications in high energy physics in anomaly detection, particularly for jets - collimated showers of particles produced in collisions such as those at the CERN Large Hadron Collider. [...]
arXiv:2111.12849. - 5 p.
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2021-11-27
21:12
Measurement of ${\mathrm{W^{\pm}}\gamma}$ differential cross sections in proton-proton collisions at $\sqrt{s} = $ 13 TeV and effective field theory constraints
Differential cross section measurements of ${\mathrm{W^{\pm}}\gamma}$ production in proton-proton collisions at $\sqrt{s} = $ 13 TeV are presented. [...]
CERN-EP-2021-219 ; CMS-SMP-20-005-003. - 2021.
Additional information for the analysis - CMS AuthorList - Fulltext

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2021-11-27
04:34
Probing multi-particle unitarity with the Landau equations / Correia, Miguel ; Sever, Amit ; Zhiboedov, Alexander
We consider the $2\to 2$ scattering amplitude of identical massive particles. [...]
arXiv:2111.12100 ; CERN-TH-2021-197. - 9 p.
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2021-11-27
04:30
Standard Model soft QCD at ATLAS and CMS / Caforio, Davide (U. Giessen, II. Phys. Inst.)
Recent results in soft QCD at LHC by the ATLAS, CMS and TOTEM Collaborations are presented. [...]
arXiv:2111.03566. - 4 p.
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2021-11-27
04:24
General Analytical Conditions for Inflaton Fragmentation: Quick and Easy Tests for its Occurrence / Kim, Jinsu (CERN) ; McDonald, John (Lancaster U.)
Understanding the physics of inflaton condensate fragmentation in the early Universe is crucial as the existence of fragments in the form of non-topological solitons (oscillons or Q-balls) may potentially modify the evolution of the post-inflation Universe. [...]
arXiv:2111.12474 ; CERN-TH-2021-202. - 9 p.
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2021-11-27
04:24
Electroweak input parameters / Brivio, Ilaria (Marseille, CPT) ; Dawson, Sally (Marseille, CPT) ; de Blas, Jorge (Geneva U. ; CERN ; Paris U., VI-VII) ; Durieux, Gauthier (Geneva U. ; CERN ; Paris U., VI-VII) ; Savard, Pierre (Geneva U. ; CERN ; Paris U., VI-VII) ; Denner, Ansgar (Marseille, CPT) ; Freitas, Ayres (Marseille, CPT) ; Hays, Chris (Marseille, CPT) ; Pecjak, Ben (Marseille, CPT) ; Vicini, Alessandro (Marseille, CPT)
Different sets of electroweak input parameters are discussed for SMEFT predictions at the LHC. [...]
arXiv:2111.12515 ; CERN-LPCC-2021-002. - 5 p.
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2021-11-27
00:39
Search for heavy resonances decaying to ZZ or ZW and axion-like particles mediating nonresonant ZZ or ZH production at $\sqrt{s} = $ 13 TeV / CMS Collaboration
A search has been performed for heavy resonances decaying to ZZ or ZW and for axion-like particles (ALPs) mediating nonresonant ZZ or ZH production, in final states with two charged leptons (${\ell} = $ e, $\mu$) produced by the decay of a Z boson, and two quarks produced by the decay of a Z, W, or Higgs bosonH. [...]
arXiv:2111.13669 ; CMS-B2G-20-013 ; CERN-EP-2021-220 ; CMS-B2G-20-013-003. - 2021.
Additional information for the analysis - CMS AuthorList - Fulltext - Fulltext

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2021-11-25
04:13
Status and Plans for the CMS High Granularity Calorimeter Upgrade Project / Quast, Thorben (CERN)
The CMS Collaboration is preparing to build replacement endcap calorimeters for the HL-LHC era. [...]
arXiv:2111.12455. -
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2021-11-25
04:05
Exploring the effect of hadron cascade-time on particle production in Xe+Xe collisions at $\sqrt {s_{NN}}$ = 5.44 TeV through a multi-phase transport model / Pradhan, Girija Sankar (Indian Inst. Tech., Indore) ; Rath, Rutuparna (Indian Inst. Tech., Indore) ; Scaria, Ronald (Indian Inst. Tech., Indore) ; Sahoo, Raghunath (Indian Inst. Tech., Indore ; CERN)
Heavy-ion collisions at ultra-relativistic energies provide extreme conditions of energy density and temperature to produce a deconfined state of quarks and gluons. [...]
arXiv:2111.05248. - 8 p.
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