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CERN Preprints

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2021-04-14
06:10
The use of QCD evolution to detect gluon saturation in exclusive photo-production of vector mesons / Hentschinski, Martin (Americas U., Puebla)
We investigate photo-production of vector mesons J/Ψ and Υ measured both at HERAand LHC, using 2 particular fits of inclusive unintegrated gluon distributions.The fits are based on non-linear Balitsky-Kovchegov evolution (Kutak-Sapetagluon; KS) and next-to-leading order Balitsky-Fadin-Kuraev-Lipatov evolution(Hentschinski-Sabio Vera-Salas gluon; HSS). [...]
Lawrence : University of Kansas Libraries, 2020. - 6 p.

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2021-04-14
06:10
Performance of CMS Endcap Precision Timing Sensors / Lazarovits, Margaret (Kansas U.)
The Large Hadron Collider, a particle accelerator in Geneva, Switzerland, willenter its High Luminosity (HL) phase, whose upgrade has already started. [...]
Lawrence : University of Kansas Libraries, 2020. - 5 p.

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2021-04-14
06:10
Physics and detector requirements at zero degree of EIC / Goto, Yuji (Wako, RIKEN)
The Electron-Ion Collider (EIC) offers the opportunity to measure three-dimensional structures of nucleons and nuclei, and discover gluon densitysaturation. [...]
Lawrence : University of Kansas Libraries, 2020. - 6 p.

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2021-04-14
06:10
Novel Radiation Detector Based on a Metal / Felix, Julian (Guanajuato U.)
In spite of the advancements on radiation detectors, there are not, so fa rreported, radiation detectors based on solid metals. [...]
Lawrence : University of Kansas Libraries, 2020. - 6 p.

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2021-04-14
04:02
Search for the doubly heavy baryons $\it{\Xi}_{bc}^{\rm0}$ and $\it{\Omega}_{bc}^{\rm0}$ decaying to $\it{\Lambda_{c}^{+}\pi^{-}}$ and $\it{\Xi_{c}^{+}\pi^{-}}$ / LHCb Collaboration
A search for the doubly heavy baryons $\it{\Xi}_{bc}^{\rm0}$ and $\it{\Omega}_{bc}^{\rm0}$ is performed using $pp$ collision data collected with the LHCb experiment from 2016 to 2018 at a centre-of-mass energy of $13TeV$, corresponding to an integrated luminosity of 5.2$fb^{-1}$. [...]
arXiv:2104.04759 ; LHCb-PAPER-2021-002 ; CERN-EP-2021-046. -
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2021-04-14
04:01
Partial Meissner effect measurement by a superconducting magnetic flux lens / Ivanov, A. (CERN) ; Koettig, T. (CERN) ; Macpherson, A. (CERN)
Magnetic flux trapping in the Meissner transition of superconducting radio frequency cavities can substantially increase dissipation which impacts cryogenic costs and necessitates expensive magnetic shielding. [...]
arXiv:2103.06697. - 10 p.
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2021-04-14
04:01
Resonance driving terms and tune spread with amplitude driven a beam-beam long range kick and a DC wire kick / Skoufaris, Kyriacos (CERN) ; Sterbini, Guido (CERN) ; Papaphilippou, Yannis (CERN)
This document presents in detail the derivation of the formulas that describe the resonance driving terms and the tune spread with amplitude generated by the beam-beam long range interactions and the DC wire compensators in cyclical machines. [...]
arXiv:2103.05914. - 17 p.
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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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