CERN Accelerating science

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2017-08-22
09:20
Search for baryon-number-violating $\Xi_b^0$ oscillations
A search for baryon-number-violating $\Xi_b^0$ oscillations is performed with a sample of $pp$ collision data recorded by the LHCb experiment, corresponding to an integrated luminosity of 3 fb$^{-1}$ [...]
CERN-EP-2017-189 ; LHCB-PAPER-2017-023.
- 2017.
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2017-08-22
09:04
Measurement of $CP$ observables in $B^\pm \to D^{(*)} K^\pm$ and $B^\pm \to D^{(*)} \pi^\pm$ decays
Measurements of $CP$ observables in $B^\pm \rightarrow D^{(*)} K^\pm$ and $B^\pm \rightarrow D^{(*)} \pi^\pm$ decays are presented, where $D^{(*)}$ indicates a neutral $D$ or $D^*$ meson that is an admixture of $D^{(*)0}$ and $\bar{D}^{(*)0}$ states. [...]
CERN-EP-2017-195 ; LHCB-PAPER-2017-021.
- 2017.
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2017-08-22
06:22
New solution for the high accuracy alignment of accelerator components / Caiazza, D (CERN) ; Catalan Lasheras, N (CERN) ; Mainaud Durand, H (CERN) ; Modena, M (CERN) ; Sanz, C (CERN) ; Tshilumba, D (CERN) ; Vlachakis, V (CERN) ; Wendt, M (CERN) ; Zorzetti, S (CERN)
Several state-of-the-art metrology measurement methods have been investigated and combined for a fiducialization of accelerator components in the micrometric regime. [...]
2017. - 14 p.
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2017-08-22
06:22
Surface Resistance of Superconductors in the Presence of a DC Magnetic Field: Frequency and Field Intensity Limits / Calatroni, Sergio (CERN) ; Vaglio, Ruggero (CNR, Italy)
We revisit the classical rigid-fluxon model which describes the effect of an applied magnetic flux on the RF surface resistance of a superconductor and discuss explicit formulations for a few limit cases. As an application, we discuss the role of magnetic flux on the enhanced surface resistance of RF accelerating cavities based on niobium, depending on its material properties. [...]
2017 - 6 p. - Published in : IEEE Trans. Appl. Supercond. 27 (2017) 3500506
In : Applied Superconductivity Conference, Denver, CO, USA, 4 - 9 Sep 2016, pp.3500506

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2017-08-17
20:01
Search for massive resonances decaying into WW, WZ, ZZ, qW, and qZ with dijet final states at $ \sqrt{s} = $ 13 TeV
Results are presented from a search in the dijet final state for new massive narrow resonances decaying to pairs of W and Z bosons or to a W/Z boson and a quark. [...]
CERN-EP-2017-184 ; CMS-B2G-17-001-003.
- 2017.
Additional information for the analysis - CMS AuthorList - Fulltext

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2017-08-16
19:02
Nuclear modification factor of $\mathrm{D}^0$ mesons in PbPb collisions at ${\sqrt{{s_{_{\text{NN}}}}}} = $ 5.02 TeV / CMS Collaboration
The transverse momentum ($ p_{\mathrm{T}} $) spectrum of prompt $ \mathrm{D}^0 $ mesons and their antiparticles has been measured via the hadronic decay channels $ \mathrm{D}^0\to \mathrm{K}^{-} \pi^{+}$ and ${\overline{\mathrm{D}}}{}^0 \to \mathrm{K}^{+} \pi^{-}$ in pp and PbPb collisions at a centre-of-mass energy of 5.02 TeV per nucleon pair with the CMS detector at the LHC. [...]
arXiv:1708.04962 ; CMS-HIN-16-001 ; CERN-EP-2017-186 ; CMS-HIN-16-001-003.
- 2017.
Additional information for the analysis - CMS AuthorList - Fulltext - Preprint

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2017-08-16
13:16
Proceedings, Workshop on Monte Carlo's, Physics and Simulations at the LHC. Part II : Frascati. Italy, 2006 First three Meetings of the Workshop on Monte Carlo's, Physics and Simulations at the LHC, part II   27 - 28 Feb, 22 - 24 May and 23 - 25 Oct 2006  - Frascati, Italy  / Ambroglini, F (INFN, Perugia ; Perugia U.); Armillis, R (INFN, Lecce ; Salento U.); Azzi, P (INFN, Padua); Bagliesi, G (INFN, Pisa); Ballestrero, A (INFN, Turin); Balossini, G (INFN, Pavia ; Pavia U.); Banfi, A (INFN, Milan Bicocca ; Milan Bicocca U.); Bartalini, P (Taiwan, Natl. Taiwan U.); Benedetti, D (Northeastern U.); Bevilacqua, G (Democritos Nucl. Res. Ctr.) et al.
These proceedings collect the presentations given at the first three meetings of the INFN 'Workshop on Monte Carlo's, Physics and Simulations at the LHC', held at the Frascati National Laboratories in 2006. The first part of these proceedings contains pedagogical introductions to several basic topics of both theoretical and experimental high pT LHC physics. [...]
Frascati : INFN, 2009 - 157 p. arXiv:0902.0180 e-proceedings (part 2 - arXiv) - e-proceedings (INFN) - Preprint

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2017-08-16
07:46
Direct determination of Wilson coefficients using $B^0\to K^{*0}\mu^+\mu^-$ decays / Hurth, T. ; Langenbruch, C. ; Mahmoudi, F.
A method to directly determine the Wilson coefficients for rare $b\to s$ transitions using $B^0\to K^{*0}\mu^+\mu^-$ decays in an unbinned maximum likelihood fit is presented. [...]
CERN-TH-2017-178 ; MITP-17-053 ; arXiv:1708.04474.
- 40 p.
Preprint

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2017-08-15
11:12
Search for diboson resonances with boson-tagged jets in $pp$ collisions at $\sqrt{s}=13$ TeV with the ATLAS detector / ATLAS Collaboration
Narrow resonances decaying into $WW$, $WZ$ or $ZZ$ boson pairs are searched for in 36.7 fb $^{-1}$ of proton--proton collision data at a centre-of-mass energy of $\sqrt{s}=13$ TeV recorded with the ATLAS detector at the Large Hadron Collider in 2015 and 2016. [...]
CERN-EP-2017-147 ; arXiv:1708.04445.
- 2017. - 40 p.
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2017-08-15
09:13
Measurement of the exclusive $\gamma \gamma \rightarrow \mu^+ \mu^-$ process in proton--proton collisions at $\sqrt{s}=13$ TeV with the ATLAS detector / ATLAS Collaboration
The production of exclusive $\gamma \gamma \rightarrow \mu^+ \mu^-$ events in proton--proton collisions at a centre-of-mass energy of 13 TeV is measured with the ATLAS detector at the LHC, using data corresponding to an integrated luminosity of 3.2 fb$^{-1}$. [...]
CERN-EP-2017-151 ; arXiv:1708.04053.
- 2017. - 35 p.
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