CERN Accelerating science

CERN Preprints

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2019-08-25
08:15
Search for a charged Higgs boson decaying into top and bottom quarks in proton-proton collisions at $\sqrt{s} = $ 13 TeV in events with electrons or muons
A search is presented for a charged Higgs boson heavier than the top quark, produced in association with a top quark, or with a top and a bottom quark, and decaying into a top-bottom quark-antiquark pair. [...]
CERN-EP-2019-164 ; CMS-HIG-18-004-003.
- 2019.
Additional information for the analysis - CMS AuthorList - Fulltext

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2019-08-25
04:56
How to include exclusive $J/\psi$ production data in global PDF analyses / Flett, Chris A. ; Jones, Stephen P. ; Martin, Alan D. ; Ryskin, Misha G. ; Teubner, Thomas
We compare the cross section for exclusive $J/\psi$ photoproduction calculated at NLO in the collinear factorization approach with HERA and LHCb data. [...]
arXiv:1908.08398 ; CERN-TH-2019-137 ; IPPP/19/65 ; LTH 1213.
- 14 p.

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2019-08-25
04:56
Rogue quantum gravitational waves / Bayindir, Cihan (Istanbul, Tech. U. ; CERN ; Bogazici U.) ; Arık, Metin (Bogazici U.)
In this paper, we propose the existence and discuss the properties of rogue quantum gravitational waves. [...]
arXiv:1908.02601.
- 5 p.
Fulltext

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2019-08-25
04:55
A frequentist analysis of three right-handed neutrinos with GAMBIT / Chrzaszcz, Marcin (CERN ; Cracow, INP) ; Drewes, Marco (Louvain U., CP3) ; Gonzalo, Tomás E. (Monash U.) ; Harz, Julia (Munich, Tech. U.) ; Krishnamurthy, Suraj (U. Amsterdam, GRAPPA) ; Weniger, Christoph (U. Amsterdam, GRAPPA)
The extension of the Standard Model by right-handed neutrinos can not only explain the active neutrino masses via the seesaw mechanism, it is also able solve a number of long standing problems in cosmology. [...]
arXiv:1908.02302.
- 53 p.
Fulltext

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2019-08-25
04:55
Analysis of the non-linear beam dynamics at top energy for the CERN Large Hadron Collider by means of a diffusion model / Bazzani, A. (Bologna U. ; INFN, Bologna) ; Giovannozzi, M. (CERN) ; Maclean, E.H. (CERN ; Malta U.)
In this paper the experimental results of the recent dynamic aperture at top energy for the CERN Large Hadron Collider are analysed by means of a diffusion model whose novelty consists of deriving the functional form of the diffusion coefficient from Nekhoroshev theorem. [...]
arXiv:1907.10913.
- 21 p.
Fulltext

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2019-08-23
11:46
First High-Intensity Beam Tests with Telescopic Flat Optics at the LHC / Fartoukh, Stephane (CERN) ; Azzopardi, Gabriella (University of Malta (MT)) ; Bruce, Roderik (CERN) ; Buffat, Xavier (CERN) ; Coello De Portugal - Martinez Vazquez, Jaime Maria ; Dilly, Joschua Werner (Ministere des affaires etrangeres et europeennes (FR)) ; Fol, Elena (Johann-Wolfgang-Goethe Univ. (DE)) ; Fuster Martinez, Nuria (CERN) ; Garcia-Tabares Valdivieso, Ana (Universidad Complutense (ES)) ; Hofer, Michael (Vienna University of Technology (AT)) et al.
The paper reports on the first high-intensity beam tests obtained with flat optics in 2018 (MD2148). [...]
CERN-ACC-2019-0052.
- 2019. - 39 p.

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2019-08-23
08:56
Pixel detector for CMS upgrade / Orfanelli, Stella (CERN) /CMS Collaboration
The LHC machine upgrade program will increase the instantaneous luminosity delivered to the multi-purpose experiments up to 7.5x$10^{34}$\,cm$^{-2}$s$^{-1}$ in 2026, with the goal of an integrated luminosity of 3000\,fb$^{-1}$ by the end of 2037. In order to fully exploit this luminosity, CMS plans to build a completely new pixel detector. [...]
CMS-CR-2019-016.- Geneva : CERN, 2019 - 12 p. Fulltext: PDF;
In : The 27th International Workshop on Vertex Detectors, Chennai, India, 21 - 26 Oct 2018

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2019-08-23
06:34
Single-Event Characterization of Xilinx UltraScale+® MPSOC under Standard and Ultra-High Energy Heavy-Ion Irradiation / Glorieux, Maximilien (Unlisted) ; Evans, Adrian (Unlisted) ; Lange, Thomas (Unlisted) ; In, A-Duong (Unlisted) ; Alexandrescu, Dan (Unlisted) ; Boatella-Polo, Cesar (ESTEC, Noordwijk) ; Garcia Alía, Rubén (CERN) ; Tali, Maris (CERN) ; Urbina Ortega, Carlos (ESTEC, Noordwijk) ; Kastriotou, Maria (CERN) et al.
Heavy-Ion irradiation of a Xilinx Ultrascale+ MPSOC was performed to measure Single-Event-Latch-up and Single-Event-Upset Cross-Sections. [...]
2018. - 5 p.
fulltext from publisher

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2019-08-23
04:58
Axion-like particles, lepton-flavor violation and a new explanation of $a_\mu$ and $a_e$ / Bauer, Martin (Durham U., IPPP) ; Neubert, Matthias (U. Mainz, PRISMA ; Cornell U., LEPP) ; Renner, Sophie (U. Mainz, PRISMA) ; Schnubel, Marvin (U. Mainz, PRISMA) ; Thamm, Andrea (CERN)
Axion-like particles (ALPs) with lepton-flavor violating couplings can be probed in exotic muon and tau decays. [...]
arXiv:1908.00008 ; CERN-TH-2019-124 ; IPPP/19/64 ; MITP/19-053.
- 5 p.
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2019-08-23
04:58
Summary of the NuSTEC Workshop on Shallow- and Deep-Inelastic Scattering / Andreopoulos, C. (U. Liverpool (main)) ; Sajjad Athar, M. (Aligarh Muslim U.) ; Bronner, C. (Kamioka Observ.) ; Dytman, S. (Pittsburgh U.) ; Gallmeister, K. (Frankfurt U.) ; Haider, H. (Aligarh Muslim U.) ; Jachowicz, N. (U. Gent (main)) ; Kabirnezhad, M. (Oxford U.) ; Katori, T. (Queen Mary, U. of London) ; Kulagin, S. (Moscow, INR) et al.
The NuSTEC workshop (https://indico.cern.ch/event/727283) held at L'Aquila in October 2018 was devoted to neutrino-nucleus scattering in the kinematic region where hadronic systems with invariant masses above the $\Delta(1232)$ resonance are produced: the so-called shallow- and deep-inelastic scattering regime. [...]
arXiv:1907.13252.
- 31 p.
Fulltext

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