# CERN Preprints

Derniers ajouts:
2020-09-30
04:01
 Charting the Fifth Force Landscape / Banks, Hannah ; McCullough, Matthew Fifth forces arising from hidden sector scalar operator exchange, as probed in a variety of present and planned experiments, can be captured by a general dispersion relation involving one real, positive, spectral density function. [...] CERN-TH-2020-148 ; arXiv:2009.12399. - 19 p. Fulltext

2020-09-30
04:01
 The SHiP experiment at CERN / Cristinziani, Markus (Bonn U.) The current status of the proposed SHiP experiment at the CERN Beam Dump Facility is presented. [...] arXiv:2009.06003. - 8 p.

2020-09-29
20:34
 Observation and measurement of forward proton scattering in association with lepton pairs produced via the photon fusion mechanism at ATLAS The observation of forward proton scattering in association with lepton pairs ($e^+e^-+p$ or $\mu^+\mu^-+p$) produced via photon fusion is presented [...] CERN-EP-2020-167. - 2020. Fulltext - Previous draft version

2020-09-29
18:13
 Search for dark photons in Higgs boson production via vector boson fusion in proton-proton collisions at $\sqrt{s} =$ 13 TeV A search is presented for a Higgs boson that is produced via vector boson fusion and that decays to an undetected particle and an isolated photon. [...] CERN-EP-2020-173 ; CMS-EXO-20-005-003. - 2020. Additional information for the analysis - CMS AuthorList - Fulltext

2020-09-29
09:14
 Optimisation of the CLIC positron source at the 1.5 TeV and 3 TeV stages / Zhao, Yongke (CERN, Shandong University (CN)) ; Latina, Andrea (CERN) ; Doebert, Steffen (CERN) ; Schulte, Daniel (CERN) ; Ma, Lianliang (Shandong University (CN)) Positron source is very important for many accelerator experiments. [...] CERN-ACC-2020-0026 ; CLIC-Note-1165. - 2020. - 29 p. Full text

2020-09-29
04:40
 Investigating Hard Splittings via Jet Substructure in pp and Pb-Pb Collisions at $\sqrt{s_{\mathrm{NN}}} = 5.02$ TeV with ALICE / Ehlers, Raymond Jets lose energy as they propagate through the Quark-Gluon Plasma, modifying their parton shower. [...] arXiv:2009.12247. - 4 p. Fulltext

2020-09-28
04:16
 The energy-dependent $\pi^+ \pi^+ \pi^+$ scattering amplitude from QCD / Hansen, Maxwell T. (CERN) ; Briceño, Raul A. (Jefferson Lab ; Old Dominion U.) ; Edwards, Robert G. (Jefferson Lab) ; Thomas, Christopher E. (Cambridge U., DAMTP) ; Wilson, David J. (Cambridge U., DAMTP) Focusing on three-pion states with maximal isospin ($\pi^+\pi^+\pi^+$), we present the first non-perturbative determination of an energy-dependent three-hadron scattering amplitude from first-principles QCD. [...] arXiv:2009.04931. - 22 p. Fulltext

2020-09-27
12:32
 Search for strong electric fields in PbPb collisions at ${\sqrt {\smash [b]{s_{_{\mathrm {NN}}}}}} =$ 5.02 TeV using azimuthal anisotropy of prompt ${\mathrm{D^0}}$ and ${\mathrm{\overline{D}}{}^0}$ mesons / CMS Collaboration The strong Coulomb field created in ultrarelativistic heavy ion collisions is expected to produce a rapidity-dependent difference ($\Delta v_{2}$) in the second Fourier coefficient of the azimuthal distribution (elliptic flow, $v_{2}$) between ${\mathrm{D^0}}$ ($\mathrm{\bar{u}}\mathrm{c}$) and ${\mathrm{\overline{D}}{}^0}$ ($\mathrm{u}\mathrm{\bar{c}}$) mesons. [...] arXiv:2009.12628 ; CMS-HIN-19-008 ; CERN-EP-2020-155 ; CMS-HIN-19-008-003. - 2020. Additional information for the analysis - CMS AuthorList - Fulltext - Full text

2020-09-26
06:00
 A Highschooler’s Guide to GeV-Range Electromagnetism / Chatterji, Satchit (Unlisted, IN) ; Desai, Aayush (Unlisted, IN) ; Dwarkesh, Aditya (Unlisted, IN) ; Ganesh, Anushree (Unlisted, IN) ; Kunder, Ameya (Unlisted, IN) ; Malhotra, Pulkit (Unlisted, IN) ; Sahoo, Roshni (Unlisted, IN) ; Shah, Jinal (Unlisted, IN) ; Velmurugan, Kiranbhaskar (Unlisted, IN) ; Joos, Markus (CERN) et al. The following article has been written primarily by the high school students who make up the team “Cryptic Ontics”, one of the two winning teams in the 2018 edition of CERN’s Beamline for Schools (BL4S) competition, and is based on the set of experiments the students endeavoured to conduct over the course of a two-week period at CERN. [...] 2020. Fulltext

2020-09-26
04:14
 Gas Heating from Spinning and Non-Spinning Evaporating Primordial Black Holes / Laha, Ranjan ; Lu, Philip ; Takhistov, Volodymyr Primordial black holes (PBHs) from the early Universe constitute a viable dark matter (DM) candidate and can span many orders of magnitude in mass. [...] arXiv:2009.11837 ; CERN-TH-2020-159. - 7 p. Fulltext