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# CERN Preprints

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2021-06-22
13:58
 Measurement of the $t\bar{t}t\bar{t}$ production cross section in $pp$ collisions at $\sqrt{s}$=13 TeV with the ATLAS detector A measurement of four-top-quark production using proton-proton collision data at a centre-of-mass energy of 13 TeV collected by the ATLAS detector at the Large Hadron Collider corresponding to an integrated luminosity of 139 fb$^{-1}$ is presented. [...] CERN-EP-2021-075. - 2021. Fulltext - Previous draft version

2021-06-22
04:44
 Backreaction from inhomogeneous matter fields during large-scale structure formation / Floerchinger, Stefan (U. Heidelberg, ITP) ; Tetradis, Nikolaos (Athens U.) ; Wiedemann, Urs Achim (CERN) We study how inhomogeneities of the cosmological fluid fields backreact on the homogeneous part of energy density and how they modify the Friedmann equations. [...] arXiv:2106.10184 ; CERN-TH-2021-095. - 11 p.

2021-06-22
04:44
 Indirect Detection of Secluded Supersymmetric Dark Matter / Barnes, Patrick (Michigan U., LCTP) ; Johnson, Zachary (Michigan U., LCTP) ; Pierce, Aaron (Michigan U., LCTP) ; Shakya, Bibhushan (DESY ; CERN) Weak-scale secluded sector dark matter can reproduce the observed dark matter relic density with thermal freeze-out within that sector. [...] arXiv:2106.09740 ; CERN-TH-2021-089 ; DESY 21-091 ; LCTP-21-13. - 30 p. Fulltext

2021-06-22
04:44
 Gravitational waves $\times$ HI intensity mapping: cosmological and astrophysical applications / Scelfo, Giulio ; Spinelli, Marta ; Raccanelli, Alvise (INFN, Padua ; CERN) ; Boco, Lumen ; Lapi, Andrea ; Viel, Matteo Two of the most rapidly growing observables in cosmology and astrophysics are gravitational waves (GW) and the neutral hydrogen (HI) distribution. [...] arXiv:2106.09786. - 36 p.

2021-06-22
04:44
 Extracting low energy signals from raw LArTPC waveforms using deep learning techniques -- A proof of concept / Uboldi, Lorenzo (CERN) ; Ruth, David (Unlisted, US, IL) ; Andrews, Michael (Carnegie Mellon U.) ; Wang, Michael H.L.S. (Fermilab) ; Wenzel, Hans-Joachim (Fermilab) ; Wu, Wanwei (Fermilab) ; Yang, Tingjun (Fermilab) We investigate the feasibility of using deep learning techniques, in the form of a one-dimensional convolutional neural network (1D-CNN), for the extraction of signals from the raw waveforms produced by the individual channels of liquid argon time projection chamber (LArTPC) detectors. [...] FERMILAB-PUB-21-030-ND-SCD ; arXiv:2106.09911. - Fulltext

2021-06-22
04:44
 Beam-based aperture measurements with movable collimator jaws as performance booster of the CERN Large Hadron Collider / Fuster-Martínez, N. (Valencia U., IFIC ; CERN) ; Aßmann, R.W. (DESY) ; Bruce, R. (CERN) ; Giovannozzi, M. (CERN) ; Hermes, P. (CERN) ; Mereghetti, A. (CERN) ; Mirarchi, D. (CERN) ; Redaelli, S. (CERN) ; Wenninger, J. (CERN) The beam aperture of a particle accelerator defines the clearance available for the circulating beams and is a parameter of paramount importance for the accelerator performance. [...] arXiv:2106.09656. - 21 p.

2021-06-22
04:44
 A biased MC for muon production for beam-dump experiments / Ghinescu, Stefan (Bucharest, IFIN-HH) ; Döbrich, Babette (CERN) ; Minucci, Elisa (CERN) ; Spadaro, Tommaso (Frascati) The search for feebly-interacting new-physics particles in the MeV-GeV mass range often involves high-intensity beams dumped into thick heavy targets. [...] arXiv:2106.01932. - 6 p. Fulltext

2021-06-21
15:55
 Measurement of the electroweak production of Z$\gamma$ and two jets in proton-proton collisions at $\sqrt{s} =$ 13 TeV and constraints on anomalous quartic gauge couplings The first observation of the electroweak (EW) production of a Z boson, a photon, and two forward jets (Z$\gamma$jj) in proton-proton collisions at a center-of-mass energy of 13 TeV is presented. [...] CERN-EP-2021-095 ; CMS-SMP-20-016-003. - 2021. Additional information for the analysis - CMS AuthorList - Fulltext

2021-06-19
19:40
 Search for ${\mathrm{W}\gamma}$ resonances in proton-proton collisions at $\sqrt{s} =$ 13 TeV using hadronic decays of Lorentz-boosted W bosons A search for ${\mathrm{W}\gamma}$ resonances in the mass range between 0.7 and 6.0 TeV is presented. [...] CERN-EP-2021-102 ; CMS-EXO-20-001-003. - 2021. Additional information for the analysis - CMS AuthorList - Fulltext

2021-06-19
11:39
 Search for a heavy Higgs boson decaying into two lighter Higgs bosons in the $\tau\tau\mathrm{b}\mathrm{b}$ final state at 13 TeV A search for a heavy Higgs boson H decaying into the observed Higgs boson H with a mass of 125 GeV and another Higgs boson $\mathrm{h_S}$ is presented. [...] CERN-EP-2021-094 ; CMS-HIG-20-014-003. - 2021. Additional information for the analysis - CMS AuthorList - Fulltext
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