CERN Accelerating science

CERN Preprints

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2015-07-29
17:17
Radiation levels at CERN's injectors and their impact on electronic equipment / De Carvalho Saraiva, Joao Pedro (CERN) ; Brugger, Markus (CERN)
Electronic devices operating in hostile radiation environments, such as those found close to high-energy particle accelerators, can suffer from different types of radiation induced failures. [...]
CERN-ACC-POSTER-2015-0001.
- 2013. - 5 p.

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2015-07-29
16:53
Angular analysis of the decay $ \mathrm{ B^0 \to K^{*0} \mu^{+} \mu^{-} }$ from pp collisions at $\sqrt{s}= $ 8 TeV
The angular distributions and the differential branching fraction of the decay $ \mathrm{ B^0 \to K^{*}(892)^0 \mu^{+} \mu^{-} }$ are studied using data corresponding to an integrated luminosity of 20.5 fb$^{-1}$ collected with the CMS detector at the LHC in pp collisions at $\sqrt{s} =$ 8 TeV. [...]
CERN-PH-EP-2015-178 ; CMS-BPH-13-010-003.
- 2015.
Additional information for the analysis - CMS AuthorList - Fulltext

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2015-07-29
16:44
Measurement of the branching ratio $\Gamma(\Lambda_b^0 \rightarrow \psi(2S)\Lambda^0)/\Gamma(\Lambda_b^0 \rightarrow J/\psi\Lambda^0)$ with the ATLAS detector
An observation of the $\Lambda_b^0 \rightarrow \psi(2S) \Lambda^0$ decay and a comparison of its branching fraction with that of the $\Lambda_b^0 \rightarrow J/\psi \Lambda^0$ decay has been made with the ATLAS detector in proton--proton collisions at $\sqrt{s}=8\,$TeV at the LHC using an integrated luminosity of $20.6\,$fb$^{-1}$. [...]
CERN-PH-EP-2015-164.
- 2015.
Fulltext - Previous draft version

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2015-07-28
11:33
Regge pole versus low energy resonances / Schmid, C (CERN)
1969.

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2015-07-28
11:24
Lepton Flavour Violating top decays at the LHC / Davidson, Sacha ; Mangano, Michelangelo L ; Perries, Stephane ; Sordini, Viola
We consider lepton flavour violating decays of the top quark, mediated by four-fermion operators. [...]
arXiv:1507.07163 ; CERN-PH-TH-2015-145.
- 2015. - 10 p.
Preprint - Full text

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2015-07-28
11:21
Heavy Vector Partners of the Light Composite Higgs / Lane, Kenneth ; Prichett, Lukas
If the Higgs boson $H(125)$ is a composite due to new strong interactions at high energy, it has spin-one partners, $\rho_H$ and $a_H$, analogous to the $\rho$ and $a_1$ mesons of QCD. [...]
arXiv:1507.07102 ; CERN-PH-TH-2015-175 ; LAPTH-042-15.
- 2015. - 10 p.
Preprint - Full text

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2015-07-27
17:25
Measurement of the CP-violating weak phase $\mathrm{ \phi_s }$ and the decay width difference $ \Delta \Gamma_{ \mathrm{s} }$ using the $ \mathrm{B^0_s} \to \mathrm{J} / \psi \phi(1020) $ decay channel in pp collisions at $\sqrt{s} =$ 8 TeV / CMS Collaboration
The CP-violating weak phase $ \mathrm{ \phi_s } $ of the $ \mathrm{ B^0_s } $ meson and the decay width difference $\Delta \Gamma_{ \mathrm{s} }$ of the $ \mathrm{ B^0_s } $ light and heavy mass eigenstates are measured with the CMS detector at the LHC using a data sample of $ \mathrm{ B^0_s } \to \mathrm{J} / \psi \phi(1020) \to \mu^+ \mu^- \mathrm{ K^{+} K^{-} } $ decays. [...]
CERN-PH-EP-2015-192 ; CMS-BPH-13-012-003 ; arXiv:1507.07527.
- 2015.
Additional information for the analysis - CMS AuthorList - Full text - Full text

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2015-07-27
17:10
Spécification technique pour la fourniture de blocs et disques en alliage de cuivre
CERN-SPS-Spec-80-193-ABT ; SPS-ABT-TA-RB-Spec-D5-193.
- 1980. - 6 p.
Full text

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2015-07-27
16:02
A precise measurement of the $B^0$ meson oscillation frequency / Vecchi, Stefania (Universita di Ferrara (IT)) /LHCb Collaboration
The oscillation frequency of $B^0$ mesons is measured using semileptonic decays with a charged $D$ or $D^*$ meson in the final state, on a data sample collected by the LHCb detector corresponding to an integrated luminosity of 3 fb$^{-1}$ of $pp$ collisions. A combination of the two decay modes gives $\Delta m_d = (503.6 \pm 2.0 \pm 1.3)$ ns$^{-1}$ , where the first uncertainty is statistical and the second systematic [...]
LHCb-CONF-2015-005; CERN-LHCb-CONF-2015-005.- Geneva : CERN, 2015 - 29.
In : European Physical Society Conference on High Energy Physics 2015, Vienna, Austria, 22 - 29 Jul 2015

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2015-07-27
14:52
Interplay among transversity induced asymmetries in hadron leptoproduction / Adolph, C. ; Akhunzyanov, R. ; Alexeev, M.G. ; Alexeev, G.D. ; Amoroso, A. ; Andrieux, V. ; Anosov, V. ; Augustyniak, W. ; Austregesilo, A. ; Azevedo, C. et al. /COMPASS
In the fragmentation of a transversely polarized quark several left-right asymmetries are possible for the hadrons in the jet. When only one unpolarized hadron is selected, it exhibits an azimuthal modulation known as Collins effect. [...]
CERN-PH-EP-2015-199.- Geneva : CERN, 2015 - 11. Draft (restricted): PDF; Fulltext: PDF;

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