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CERN Preprints

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2021-04-13
06:01
Vibration reduction techniques for stepper motors at standstill in high precision applications / Merino, Jorge Sola (CERN) ; Galvez, Pablo Serrano (CERN) ; Butcher, Mark (CERN) ; Di Castro, Mario (CERN) ; Masi, Alessandro (CERN)
Stepper motors are widely used in high precision positioning applications where reliability is an important factor. [...]
Oct.. - 6 p.

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2021-04-13
06:01
Effective Target Speed-Reduction Techniques for Industrial Interferometers / Butcher, Mark (CERN) ; Grec, Lucian-Mircea (CERN) ; di Castro, Mario (CERN) ; Masi, Alessandro (CERN)
In recent years the cost, size and complexity of use of interferometers have reduced to an extent where they are now more employable in industrial applications, where their high precision and contactless measurement benefits are needed. [...]
Oct.. - 6 p.

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2021-04-13
04:41
Precise determination of the B0s-B0sbar oscillation frequency / LHCb Collaboration
Mesons comprising a beauty quark and a strange quark can oscillate between particle (B0s) and antiparticle (B0sbar) flavour eigenstates, with a frequency given by the mass difference between heavy and light mass eigenstates, deltams. [...]
arXiv:2104.04421 ; LHCb-PAPER-2021-005 ; CERN-EP-2021-047. -
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2021-04-13
04:41
A search for radio emission from double-neutron star merger GW190425 using Apertif / Boersma, Oliver M. (Amsterdam U., Astron. Inst. ; ASTRON, Dwingeloo) ; Van Leeuwen, Joeri (Amsterdam U., Astron. Inst. ; ASTRON, Dwingeloo) ; Adams, Elizabeth A.K. (ASTRON, Dwingeloo ; Kapteyn Astron. Inst., Groningen) ; Adebahr, Björn (Ruhr U., Astron. Inst.) ; Kutkin, Alexander (ASTRON, Dwingeloo ; Lebedev Inst., Astro Space Ctr.) ; Oosterloo, Tom (ASTRON, Dwingeloo ; Kapteyn Astron. Inst., Groningen) ; De Blok, W.J.G. (ASTRON, Dwingeloo ; Kapteyn Astron. Inst., Groningen ; Cape Town U.) ; Van Den Brink, R. (ASTRON, Dwingeloo ; Shell, Rijswijk) ; Coolen, A.H.W.M. (ASTRON, Dwingeloo) ; Connor, L. (Amsterdam U., Astron. Inst. ; Caltech) et al.
Detection of the electromagnetic emission from coalescing binary neutron stars (BNS) is important for understanding the merger and afterglow. [...]
arXiv:2104.04280. - 11 p.

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2021-04-13
04:41
Classical Gravity from Loop Amplitudes / Bjerrum-Bohr, N. Emil J. ; Damgaard, Poul H. ; Planté, Ludovic ; Vanhove, Pierre
We describe an efficient method for extracting the parts of $D$-dimensional loop integrals that are needed to derive observables in classical general relativity from scattering amplitudes. [...]
IPhT-t21/015 ; CERN-TH-2021-052 ; arXiv:2104.04510. - 41 p.
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2021-04-13
04:41
Clean single-valued polylogarithms / Charlton, Steven ; Duhr, Claude ; Gangl, Herbert
We define a variant of real-analytic polylogarithms that are single-valued and that satisfy `clean' functional relations that do not involve any products of lower weight functions. [...]
CERN-TH-2021-048 ; arXiv:2104.04344. - 36 p.
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2021-04-13
04:40
The Muon Smasher's Guide / Al Ali, Hind (UC, Santa Barbara) ; Arkani-Hamed, Nima (Princeton, Inst. Advanced Study) ; Banta, Ian (UC, Santa Barbara) ; Benevedes, Sean (UC, Santa Barbara) ; Buttazzo, Dario (INFN, Pisa) ; Cai, Tianji (UC, Santa Barbara) ; Cheng, Junyi (UC, Santa Barbara) ; Cohen, Timothy (Oregon U.) ; Craig, Nathaniel (UC, Santa Barbara) ; Ekhterachian, Majid (Maryland U.) et al.
We lay out a comprehensive physics case for a future high-energy muon collider, exploring a range of collision energies (from 1 to 100 TeV) and luminosities. [...]
arXiv:2103.14043. - 105 p.
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2021-04-11
13:17
Search for W' bosons decaying to a top and a bottom quark at $\sqrt{s} = $ 13 TeV in the hadronic final state
A search is performed for W' bosons decaying to a top and a bottom quark in the all-hadronic final state, in proton-proton collisions at a center-of-mass energy of 13 TeV. [...]
CERN-EP-2021-049 ; CMS-B2G-20-005-003. - 2021.
Additional information for the analysis - CMS AuthorList - Fulltext

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2021-04-10
17:14
Search for charged Higgs bosons produced in vector boson fusion processes and decaying into vector boson pairs in proton-proton collisions at $\sqrt{s} = $ 13 TeV
A search for charged Higgs bosons produced in vector boson fusion processes and decaying into vector bosons, using proton-proton collisions at $\sqrt{s} = $ 13 TeV at the LHC, is reported. [...]
CERN-EP-2021-045 ; CMS-HIG-20-017-003. - 2021.
Additional information for the analysis - CMS AuthorList - Fulltext - CMS HEPData

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2021-04-10
04:18
Effective field theories and inflationary magnetogenesis / Giovannini, Massimo (CERN ; INFN, Milan Bicocca)
The effective approach is applied to the analysis of inflationary magnetogenesis. [...]
arXiv:2104.03891. - 10 p.
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