CERN Accelerating science

CERN Preprints

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2018-05-26
07:25
Observation of a new $\Xi_b^-$ resonance / LHCb Collaboration
From samples of $pp$ collision data collected by the LHCb experiment at $\sqrt{s}=7$, $8$ and $13$ TeV corresponding to integrated luminosities of 1.0, 2.0 and 1.5 fb$^{-1}$, respectively, a peak in both the $\Lambda_b^0K^-$ and $\Xi_b^0\pi^-$ invariant mass spectra is observed. [...]
LHCb-PAPER-2018-013 ; CERN-EP-2018-108 ; arXiv:1805.09418 ; LHCB-PAPER-2018-013 ; CERN-EP-2018-108.
- 8 p.
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2018-05-26
07:25
Summary and Conclusions of the 'JRA Beam Telescope 2025'-Forum at the 6th Beam Telescopes and Test Beams Workshop / Dreyling-Eschweiler, J. (DESY) ; Jansen, H. (DESY) ; Amjad, M.S. (University Coll. London) ; Arling, J.-H. (DESY) ; Coates, T. (Sussex U.) ; Dätwyler, A. (Zurich U.) ; Dannheim, D. (CERN) ; van Dijk, M.W. U. (CERN) ; Eichhorn, T. (DESY) ; Gerbershagen, A. (CERN) et al.
On January 17th 2018, a forum on a possible Joint Research Activity on a future common Beam Telescope was held during the 6th Beam Telescopes and Test Beams Workshop (BTTB) in Zurich, Switzerland. [...]
arXiv:1805.09572.
- 5 p.
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2018-05-26
06:12
Single event effects in high-energy accelerators / García Alía, Rubén (CERN) ; Brugger, Markus (CERN) ; Danzeca, Salvatore (CERN) ; Cerutti, Francesco (CERN) ; de Carvalho Saraiva, Joao Pedro (CERN) ; Denz, Reiner (CERN) ; Ferrari, Alfredo (CERN) ; Foro, Lionel L (CERN) ; Peronnard, Paul (CERN) ; Røed, Ketil (U. Oslo (main)) et al.
The radiation environment encountered at high-energy hadron accelerators strongly differs from the environment relevant for space applications. [...]
2017. - 11 p.

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2018-05-25
22:57
Constraints on models of scalar and vector leptoquarks decaying to a quark and a neutrino at $\sqrt{s} = $ 13 TeV
The results of a previous search by the CMS Collaboration for squarks and gluinos are reinterpreted to constrain models of leptoquark (LQ) production. [...]
CERN-EP-2018-109 ; CMS-SUS-18-001-003.
- 2018.
Additional information for the analysis - CMS AuthorList - Fulltext

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2018-05-25
22:18
Search for an exotic decay of the Higgs boson to a pair of light pseudoscalars in the final state with two b quarks and two $\tau$ leptons in proton-proton collisions at $\sqrt{s} = $ 13 TeV
A search for an exotic decay of the Higgs boson to a pair of light pseudoscalar bosons is performed for the first time in the final state with two b quarks and two $\tau$ leptons. [...]
CERN-EP-2018-089 ; CMS-HIG-17-024-003.
- 2018.
Additional information for the analysis - CMS AuthorList - Fulltext

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2018-05-25
14:56
PcInterlock: Implementation and Operational Experience with the Optics Interlock / Schaumann, Michaela (CERN) ; Calia, Andrea (CERN) ; Fuchsberger, Kajetan (CERN) ; Wenninger, Jorg (CERN)
In 2016 the luminosity reach of the LHC was increased by reducing the β-function in the main collision points below the design value to β∗ = 40 cm. [...]
CERN-BE-2018-001.
- 2018. - 19 p.

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2018-05-25
14:17
LHCb /LHCb Collaboration
Pending
LHCb-CONF-2018-003; CERN-LHCb-CONF-2018-003.- Geneva : CERN, 2018 Fulltext: PDF;
In : 53rd Rencontres de Moriond on QCD and High Energy Interactions, La Thuile, Italy, 17 - 24 Mar 2018

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2018-05-25
07:20
Consistent Conformal Extensions of the Standard Model / Loebbert, Florian ; Miczajka, Julian ; Plefka, Jan
The question of whether classically conformal modifications of the standard model are consistent with experimental obervations has recently been subject to renewed interest. [...]
HU-EP-18/16 ; CERN-TH-2018-125 ; HU-EP-18-16 ; CERN-TH-2018-125 ; arXiv:1805.09727.
- 20 p.
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2018-05-25
07:20
Uncertainties in WIMP Dark Matter Scattering Revisited / Ellis, John ; Nagata, Natsumi ; Olive, Keith A.
We revisit the uncertainties in the calculation of spin-independent scattering matrix elements for the scattering of WIMP dark matter particles on nuclear matter. [...]
KCL-PH-TH/2018-19 ; CERN-TH/2018-123 ; UT-18-11 ; UMN-TH-3719/18 ; FTPI-MINN-18/10 ; KCL-PH-TH-2018-19 ; CERN-TH-2018-123 ; UT-18-11 ; UMN-TH-3719-18 ; --FTPI-MINN-18-10 ; arXiv:1805.09795 ; --FTPI-MINN-18-10.
- 25 p.
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2018-05-25
07:20
Search for a dimuon resonance in the $\Upsilon$ mass region / LHCb Collaboration
A search is performed for a spin-0 boson, $\phi$, produced in proton-proton collisions at centre-of-mass energies of 7 and 8 TeV, using prompt $\phi\rightarrow\mu^+\mu^-$ decays and a data sample corresponding to an integrated luminosity of approximately 3.0 ${\rm fb}^{-1}$ collected with the LHCb detector. [...]
LHCb-PAPER-2018-008 ; CERN-EP-2018-111 ; LHCB-PAPER-2018-008 ; CERN-EP-2018-111 ; arXiv:1805.09820.
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