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2020-12-02
07:04
Fine structure of angular distribution of x-ray transition radiation from multilayered radiator in Geant4 / Savchenko, A A (Moscow Phys. Eng. Inst. ; Kurchatov Inst., Moscow ; Belgorod State U.) ; Tishchenko, A A (Moscow Phys. Eng. Inst. ; Kurchatov Inst., Moscow ; Belgorod State U.) ; Sergeeva, D Yu (Moscow Phys. Eng. Inst. ; Kurchatov Inst., Moscow ; Belgorod State U.) ; Belyaev, N (Moscow Phys. Eng. Inst.) ; Cherry, M (CERN) ; Dachs, F (CERN ; Vienna U.) ; Doronin, S (Moscow Phys. Eng. Inst.) ; Filippov, K (Moscow Phys. Eng. Inst.) ; Fusco, P (Bari U. ; INFN, Bari) ; Gargano, F (INFN, Bari) et al.
The present version of the Transition Radiation (TR) simulation module implemented in the Geant4 toolkit describes very well experimental data for the TR energy distribution; however, it does not allow reproducing the details of angular distribution at small angles. In order to solve this problem, corrections to the existing x-ray TR module in Geant4 are proposed. [...]
2020 - 11 p. - Published in : JINST 15 (2020) C06024
In : 13th Radiation from Relativistic Electrons in Periodic Structures, Belgorod, Russian Federation, 16-20 Sep 2019, pp.C06024

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2020-12-02
04:05
Light Detection System and Time Resolution of the NA62 RICH / Anzivino, G. (Perugia U. ; INFN, Perugia) ; Barbanera, M. (Perugia U. ; INFN, Perugia) ; Bizzeti, A. (Modena U. ; INFN, Florence) ; Brizioli, F. (Perugia U. ; INFN, Perugia) ; Bucci, F. (INFN, Florence) ; Cassese, A. (Florence U. ; INFN, Florence) ; Cenci, P. (INFN, Perugia) ; Ciaranfi, R. (INFN, Florence) ; Duk, V. (INFN, Perugia) ; Engelfried, J. (San Luis Potosi U.) et al.
A large RICH detector is used in NA62 to suppress the muon contamination in the charged pion sample by a factor of 100 in the momentum range between 15 and 35 GeV/c. Cherenkov light is collected by 1952 photomultipliers placed at the upstream end. [...]
arXiv:2009.07581.- 2020-10-27 - 15 p. - Published in : JINST 15 (2020) P10025 Fulltext: PDF;

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2020-12-02
04:01
Sensitivity reach on heavy neutral leptons and $\tau$-neutrino mixing $|U_{\tau N}|^2 $ at the HL-LHC / Cheung, Kingman (NCTS, Hsinchu ; Taiwan, Natl. Tsing Hua U. ; Konkuk U.) ; Chung, Yi-Lun (Taiwan, Natl. Tsing Hua U.) ; Ishida, Hiroyuki (KEK, Tsukuba) ; Lu, Chih-Ting (Korea Inst. Advanced Study, Seoul)
The model of heavy neutral leptons (HNLs) is one of the well-motivated models beyond the standard model (BSM) from both theoretical and phenomenological point of views. It is an indispensable ingredient to explain the puzzle of tiny neutrino masses and the origin of the matter-antimatter asymmetry in our Universe, based on the models in which the simplest Type-I seesaw mechanism can be embedded. [...]
arXiv:2004.11537.- 2020-10-29 - 25 p. - Published in : Phys. Rev. D 102 (2020) 075038 Article from SCOAP3: PDF; Fulltext: PDF;

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2020-11-28
06:26
Low-lying electric dipole $γ$-continuum for the unstable $^{62,64}$Fe nuclei: Strength evolution with neutron number / Avigo, R (INFN, Milan ; Milan U.) ; Wieland, O (INFN, Milan) ; Bracco, A (INFN, Milan ; Milan U.) ; Camera, F (INFN, Milan ; Milan U.) ; Ameil, F (Darmstadt, GSI) ; Arici, T (Darmstadt, GSI) ; Ataç, A (Royal Inst. Tech., Stockholm) ; Barrientos, D (CERN) ; Bazzacco, D (INFN, Padua) ; Bednarczyk, P (Cracow, INP) et al.
The γ -ray emission from the nuclei $^{62,64}$Fe following Coulomb excitation at bombarding energy of 400-440 AMeV was measured with special focus on E 1 transitions in the energy region 4-8 MeV. The unstable neutron-rich nuclei $^{62,64}$Fe were produced at the FAIR-GSI laboratories and selected with the FRS spectrometer. [...]
2020 - 6 p. - Published in : Phys. Lett. B 811 (2020) 135951

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2020-11-28
06:26
Electron flux and pressure dynamic in the LHC vacuum pilot sector as a function of beam parameters and beam pipe properties / Buratin, Elena (CERN ; EPFL, Lausanne, FSL) ; Baglin, Vincent (CERN) ; Henrist, Bernard (CERN) ; Chiggiato, Paolo (CERN) ; Fasoli, Ambrogio (EPFL, Lausanne, FSL)
The Large Hadron Collider (LHC) is affected by the electron cloud (EC) phenomenon that can provoke beam instabilities, detrimental heat loads and pressure increases in the vacuum system. An innovative dedicated system called vacuum pilot sector (VPS) provides a continuous monitoring of the electron flux and of the pressure signals thanks to electron pickup and vacuum gauges. [...]
2020 - 10 p. - Published in : Phys. Rev. Accel. Beams 23 (2020) 114802 Fulltext from Publisher: PDF;

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2020-11-28
06:26
A first prototype of C$_6$ D$_6$ total-energy detector with SiPM readout for neutron capture time-of-flight experiments / n_TOF Collaboration
Low efficiency total-energy detectors (TEDs) are one of the main tools for neutron capture cross section measurements utilizing the time-of-flight (TOF) technique. State-of-the-art TEDs are based on a C$_6$ D$_6$ liquid-scintillation cell optically coupled to a fast photomultiplier tube. [...]
2021 - 8 p. - Published in : Nucl. Instrum. Methods Phys. Res., A 985 (2021) 164709 Fulltext: PDF;

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2020-11-28
04:29
Exclusive vector meson production in electron – ion collisions at the EIC, LHeC and FCC–$eh$ / Goncalves, Victor P. (Pelotas U.) ; Martins, Daniel E. (Rio de Janeiro Federal U.) ; Sena, Celso R. (Pelotas U.)
The exclusive vector meson production in electron-ion collisions for the energies of the future colliders is investigated. We present predictions for the coherent and incoherent $\phi$ and $J/\psi$ production in $eAu$ collisions considering the possible states of nucleon configurations in the nuclear wave function and taking into account of the non-linear corrections to the QCD dynamics. [...]
arXiv:2008.03145.- 2020-12 - 10 p. - Published in : Nucl. Phys. A 1004 (2020) 122055 Fulltext: PDF;

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2020-11-28
04:29
Higgsino and gaugino pair production at the LHC with aNNLO+NNLL precision / Fiaschi, Juri (Munster U., ITP) ; Klasen, Michael (Munster U., ITP)
We present a calculation of higgsino and gaugino pair production at the LHC at next-to-next-to-leading logarithmic (NNLL) accuracy, matched to approximate next-to-next-to-leading order (aNNLO) QCD corrections. We briefly review the formalism for the resummation of large threshold logarithms and highlight the analytical results required at aNNLO+NNLO accuracy. [...]
arXiv:2006.02294; MS-TP-20-23.- 2020-11-20 - 14 p. - Published in : Phys. Rev. D 102 (2020) 095021 Article from SCOAP3: PDF; Fulltext: PDF;

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2020-11-28
04:29
Strong diffusion effect of charm quarks on J /$\psi$ production in Pb–Pb collisions at the LHC / Zhao, Jiaxing (Tsinghua U., Beijing) ; Chen, Baoyi (Tianjin U.)
We study the $J/\psi$ production based on coalescence model at $\sqrt{s_{NN}}$ = 2.76 and 5.02 TeV Pb-Pb collisions. With the colliding energy increasing from 2.76 TeV to 5.02 TeV, the number of charm pairs is enhanced by more than 50%. [...]
arXiv:1705.04558.- 2018-01-10 - 5 p. - Published in : Phys. Lett. B 776 (2018) 17-21 Article from SCOAP3: PDF; Preprint: PDF;

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2020-11-27
16:26
Arts at CERN / Bello, Monica
2018
In : The live creature and ethereal things, pp.75-77

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