CERN Preprints

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2019-10-23
05:04

Trans-Planckian Censorship and Inflation in Grand Unified Theories / Schmitz, Kai
The recently proposed trans-Planckian censorship conjecture (TCC) amounts to the claim that inflation models with an inflationary energy scale larger than Lambda_inf^max ~ 10^9 GeV belong to the swampland, i.e., cannot be embedded into a consistent theory of quantum gravity. [...]
CERN-TH-2019-171 ; arXiv:1910.08837. - 7 p.
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2019-10-23
05:04

Secular effects of Ultralight Dark Matter on Binary Pulsars / Blas, Diego (King's Coll. London) ; López Nacir, Diana (Buenos Aires, CONICET) ; Sibiryakov, Sergey (CERN ; EPFL, Lausanne, LPPC ; Moscow, INR)
Dark matter (DM) can consist of very light bosons behaving as a classical scalar field that experiences coherent oscillations. [...]
arXiv:1910.08544 ; CERN-TH-2019-165 ; INR-TH-2019-018 ; KCL-PH-TH/2019-77. - 24 p.
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2019-10-23
05:03

Measurement of neutrino and antineutrino neutral-current quasielastic-like interactions on oxygen by detecting nuclear de-excitation $\gamma$-rays / T2K Collaboration
Neutrino- and antineutrino-oxygen neutral-current quasielastic-like interactions are measured at Super-Kamiokande using nuclear de-excitation $\gamma$-rays to identify signal-like interactions in data from a $14.94 \ (16.35)\times 10^{20}$ protons-on-target exposure of the T2K neutrino (antineutrino) beam. [...]
arXiv:1910.09439. - 18 p.
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2019-10-23
05:02

GEANT4 Parameter Tuning Using Professor / Elvira, V. (Fermilab) ; Fields, L. (Fermilab) ; Genser, K.L. (Fermilab) ; Hatcher, R. (Fermilab) ; Ivanchenko, V. (CERN ; Tomsk State U.) ; Kelsey, M. (SLAC) ; Koi, T. (SLAC) ; Perdue, G.N. (Fermilab) ; Ribon, A. (CERN) ; Uzhinsky, V. (CERN) et al.
The Geant4 toolkit is used extensively in high energy physics to simulate the passage of particles through matter and to predict effects such as detector efficiencies and smearing. [...]
arXiv:1910.06417 ; FERMILAB-PUB-19-526-SCD. - 44 p.
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2019-10-22
16:33

Measurement of $f_s / f_u$ variation with proton-proton collision energy and kinematics
The ratio of the $B^0_s$ and $B^+$ fragmentation fractions $f_s$ and $f_u$ is studied with $B^0_s \to J/\psi \phi$ and $B^+ \to J/\psi K^+$ decays using data collected by the LHCb experiment in proton-proton collisions at 7, 8 and 13 TeV center-of-mass energies. [...]
CERN-EP-2019-209 ; arXiv:1910.09934 ; LHCB-PAPER-2019-020. - 2019.
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2019-10-22
10:33

Search for standard model production of four top quarks / Fangmeier, Caleb Arthur (Nebraska U.) /CMS Collaboration
This talk describes efforts towards a first measurement of the standard model production of four top quarks with results based on up to the full Run 2 dataset. It includes implications of this measurement to constrain properties of the Higgs Boson and new physics scenarios including dark matter..
CMS-CR-2019-170.- Geneva : CERN, 2019 - 6 p. Fulltext: PDF;
In : 2019 Meeting of the Division of Particles & Fields of the American Physical Society, Boston, United States Of America, 29 Jul - 2 Aug 2019

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2019-10-22
04:09

Quantized Coulomb Branches, Monopole Bubbling and Wall-Crossing Phenomena in 3d $\mathcal{N}=4$ Theories / Assel, Benjamin (CERN) ; Cremonesi, Stefano (Durham U., Dept. of Math.) ; Renwick, Matthew (Durham U., Dept. of Math.)
To study the quantized Coulomb branch of 3d $\mathcal{N}=4$ unitary SQCD theories, we propose a new method to compute correlators of monopole and Casimir operators that are inserted in the $\mathbb{R}\times\mathbb{R}^2_\epsilon$ Omega background. [...]
arXiv:1910.01650. - 73 p.
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2019-10-22
04:09

Emergent Strings from Infinite Distance Limits / Lee, Seung-Joo (CERN) ; Lerche, Wolfgang (CERN) ; Weigand, Timo (CERN ; U. Mainz, PRISMA)
As a refinement of the Swampland Distance Conjecture, we propose that a quantum gravitational theory in an infinite distance limit of its moduli space either decompactifies, or reduces to an asymptotically tensionless, weakly coupled string theory. [...]
arXiv:1910.01135 ; CERN-TH-2019-159. - 96 p.
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2019-10-21
18:55

Evidence for electroweak production of two jets in association with a $Z\gamma$ pair in $pp$ collisions at $\sqrt{s} = 13$ TeV with the ATLAS detector / ATLAS Collaboration
Evidence for electroweak production of two jets in association with a $Z\gamma$ pair in $\sqrt{s} = 13$ TeV proton-proton collisions at the Large Hadron Collider is presented. [...]
arXiv:1910.09503 ; CERN-EP-2019-206. - 2019. - 39 p, 39 p.
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2019-10-21
15:32