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CERN Document Server 2,047 записей найдено  1 - 10следующийконец  перейти к записи: Поиск длился 0.27 секунд. 
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$e^+$ and $\bar{p}$ production in $pp$ collisions and the cosmic-ray $e^+/\bar{p}$ flux ratio / Blum, Kfir (Weizmann Inst. ; CERN) ; Sato, Ryosuke (Weizmann Inst.) ; Takimoto, Masahiro (Weizmann Inst. ; KEK, Tsukuba)
Secondary astrophysical production of $e^+$ and $\bar{p}$ cosmic rays is considered. Inclusive $\pi$, $K$, and $\bar{p}$ production cross sections in $pp$ collisions at large $\sqrt{s}$ are parametrised using recent experimental data at LHC energies. [...]
arXiv:1709.04953.- 2018-09-28 - 12 p. - Published in : Phys. Rev. D 98 (2018) 063022 Fulltext: 10.1103_PhysRevD.98.063022 - PDF; arXiv:1709.04953 - PDF;
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Nuclear coalescence from correlation functions / Blum, Kfir (Weizmann Inst. ; CERN) ; Takimoto, Masahiro (Weizmann Inst.)
We derive a simple formula relating the cross section for light cluster production (defined via a coalescence factor) to the two-proton correlation function measured in heavy-ion collisions. The formula generalises earlier coalescence-correlation relations found by Scheibl & Heinz and by Mrowczynski for Gaussian source models. [...]
arXiv:1901.07088.- 2019-04-19 - 10 p. - Published in : Phys. Rev. C Fulltext: PDF;
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Neutrino flavour as a test of the explosion mechanism of core-collapse supernovae / Bar, Nitsan (Weizmann Inst.) ; Blum, Kfir (CERN ; Weizmann Inst.) ; D'Amico, Guido (Stanford U., ITP ; CERN)
We study the ratio of neutrino-proton elastic scattering to inverse beta decay event counts, measurable in a scintillation detector like JUNO, as a key observable for identifying the explosion mechanism of a galactic core-collapse supernova. If the supernova is not powered by the core but rather, e.g., by collapse-induced thermonuclear explosion, then a prolonged period of accretion-dominated neutrino luminosity is predicted. [...]
arXiv:1811.11178.- 2019-06-07 - 24 p. - Published in : Phys. Rev. D 99 (2019) 123004 Fulltext: PDF; Fulltext from Publisher: PDF;
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Cosmic-ray Antimatter / Blum, Kfir (Weizmann Inst. ; CERN) ; Sato, Ryosuke (Weizmann Inst.) ; Waxman, Eli (Weizmann Inst.)
In recent years, space-born experiments have delivered new measurements of high energy cosmic-ray (CR) $\bar p$ and $e^+$. [...]
arXiv:1709.06507. - 2017 - 171.
Full text
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Experimental and numerical simulation of a TPC like set up for the measurement of ion backflow / Sankar Bhattacharya, Deb (Saha Inst. ; IRFU, SPhN, Saclay ; Jadavpur U.) ; Bhattacharya, Purba (Weizmann Inst.) ; Rout, Prasant Kumar (Saha Inst. ; Weizmann Inst.) ; Mukhopadhyay, Supratik (Saha Inst.) ; Bhattacharya, Sudeb (Saha Inst.) ; Majumdar, Nayana (Saha Inst.) ; Sarkar, Sandip (Saha Inst.) ; Colas, Paul (IRFU, SPhN, Saclay) ; Attie, David (IRFU, SPhN, Saclay) ; Ganjour, Serguei (IRFU, SPhN, Saclay) et al.
Ion backflow is one of the effects limiting the operation of a gaseous detector at high flux, by giving rise to space charge which perturbs the electric field. [...]
arXiv:1710.00624. - 2017. - 11 p.
Full text
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Comments on the mass sheet degeneracy in cosmography analyses / Teodori, Luca (Weizmann Inst.) ; Blum, Kfir (Weizmann Inst.) ; Castorina, Emanuele (Milan U.) ; Simonović, Marko (CERN) ; Soreq, Yotam (Technion)
We make a number of comments regarding modeling degeneracies in strong lensing measurements of the Hubble parameter $H_0$. The first point concerns the impact of weak lensing associated with different segments of the line of sight. [...]
arXiv:2201.05111.- 2022-07-15 - 16 p. - Published in : JCAP 2207 (2022) 027 Fulltext: 2201.05111 - PDF; document - PDF;
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Exclusive Window onto Higgs Yukawa Couplings / Kagan, Alexander L. (Cincinnati U.) ; Perez, Gilad (CERN ; Weizmann Inst.) ; Petriello, Frank (Argonne ; Northwestern U.) ; Soreq, Yotam (Weizmann Inst.) ; Stoynev, Stoyan (Northwestern U.) ; Zupan, Jure (Cincinnati U.)
We show that both flavor-conserving and flavor-violating Yukawa couplings of the Higgs boson to first- and second-generation quarks can be probed by measuring rare decays of the form h->MV, where M denotes a vector meson and V indicates either gamma, W or Z. We calculate the branching ratios for these processes in both the Standard Model and its possible extensions. [...]
arXiv:1406.1722.- 2015-03-10 - 5 p. - Published in : Phys. Rev. Lett. 114 (2015) 101802 APS Open Access article: PDF; Preprint: PDF; External link: Preprint
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Ultra-light dark matter in disk galaxies / Bar, Nitsan (Weizmann Inst.) ; Blum, Kfir (Weizmann Inst. ; CERN) ; Eby, Joshua (Weizmann Inst.) ; Sato, Ryosuke (DESY)
Analytic arguments and numerical simulations show that bosonic ultra-light dark matter (ULDM) would form cored density distributions (`solitons') at the center of galaxies. ULDM solitons offer a promising way to exclude or detect ULDM by looking for a distinctive feature in the central region of galactic rotation curves. [...]
arXiv:1903.03402; DESY-19-036.- 2019-05-29 - 17 p. - Published in : Phys. Rev. D 99 (2019) 103020 Fulltext: PDF; Fulltext from Publisher: PDF;
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In-beam evaluation of a medium-size Resistive-Plate WELL gaseous particle detector / Moleri, L. (Weizmann Inst.) ; Amaro, F.D. (Coimbra U.) ; Arazi, L. (Weizmann Inst.) ; Azevedo, C.D.R. (Aveiro U.) ; Breskin, A. (Weizmann Inst.) ; Coimbra, A.E.C. (Weizmann Inst.) ; Oliveri, E. (CERN) ; Pereira, F.A. (Aveiro U.) ; Renous, D. Shaked (Weizmann Inst.) ; Schaarschmidt, J. (Weizmann Inst.) et al.
In-beam evaluation of a fully-equipped medium-size 30$\times$30 cm$^2$ Resistive Plate WELL (RPWELL) detector is presented. It consists here of a single element gas-avalanche multiplier with Semitron ESD225 resistive plate, 1 cm$^2$ readout pads and APV25/SRS electronics. [...]
arXiv:1607.02587.- 2016-09-27 - 13 p. - Published in : JINST 11 (2016) P09013 Fulltext: PDF; IOP Open Access article: PDF; Preprint: PDF; External link: Preprint
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The Axiflavon / Calibbi, Lorenzo (Beijing, Inst. Theor. Phys.) ; Goertz, Florian (CERN) ; Redigolo, Diego (Tel Aviv U. ; Weizmann Inst.) ; Ziegler, Robert (Karlsruhe U., TTP) ; Zupan, Jure (CERN ; Cincinnati U.)
We show that solving the flavor problem of the Standard Model with a simple $U(1)_H$ flavor symmetry naturally leads to an axion that solves the strong CP problem and constitutes a viable Dark Matter candidate. In this framework, the ratio of the axion mass and its coupling to photons is related to the SM fermion masses and predicted within a small range, as a direct result of the observed hierarchies in quark and charged lepton masses. [...]
arXiv:1612.08040; TTP16-058; CERN-TH-2016-261.- 2017-05-15 - 6 p. - Published in : Phys. Rev. D 95 (2017) 095009 Fulltext: PhysRevD.95 - PDF; arXiv:1612.08040 - PDF; 10.1103_PhysRevD.95.095009 - PDF;
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