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CERN Document Server Znaleziono 261 rekordów  1 - 10następnykoniec  skocz do rekordu: Szukanie trwało 0.71 sekund. 
1.
Properties of Cosmic Deuterons Measured by the Alpha Magnetic Spectrometer / AMS Collaboration
Precision measurements by the Alpha Magnetic Spectrometer (AMS) on the International Space Station of the deuteron (D) flux are presented. The measurements are based on 21×106 D nuclei in the rigidity range from 1.9 to 21 GV collected from May 2011 to April 2021. [...]
2024 - 8 p. - Published in : Phys. Rev. Lett. 132 (2024) 261001 Fulltext: PDF;
2.
First Result from the Alpha Magnetic Spectrometer on the International Space Station: Precision Measurement of the Positron Fraction in Primary Cosmic Rays of 0.5–350 GeV / AMS Collaboration
A precision measurement by the Alpha Magnetic Spectrometer on the International Space Station of the positron fraction in primary cosmic rays in the energy range from 0.5 to 350 GeV based on 6.8×106 positron and electron events is presented. The very accurate data show that the positron fraction is steadily increasing from 10 to ∼250  GeV, but, from 20 to 250 GeV, the slope decreases by an order of magnitude. [...]
2013 - 10 p. - Published in : Phys. Rev. Lett. 110 (2013) 141102 External links: Interactions.org article; Symmetry Magazine article; Press Release
3.
Temporal Structures in Positron Spectra and Charge-Sign Effects in Galactic Cosmic Rays / AMS Collaboration
We present the precision measurements of 11 years of daily cosmic positron fluxes in the rigidity range from 1.00 to 41.9 GV based on 3.4×106 positrons collected with the Alpha Magnetic Spectrometer (AMS) aboard the International Space Station. The positron fluxes show distinctly different time variations from the electron fluxes at short and long timescales. [...]
2023 - 10 p. - Published in : Phys. Rev. Lett. 131 (2023) 151002 Fulltext: PDF;
4.
Properties of Cosmic-Ray Sulfur and Determination of the Composition of Primary Cosmic-Ray Carbon, Neon, Magnesium, and Sulfur: Ten-Year Results from the Alpha Magnetic Spectrometer / AMS Collaboration
We report the properties of primary cosmic-ray sulfur (S) in the rigidity range 2.15 GV to 3.0 TV based on 0.38×106 sulfur nuclei collected by the Alpha Magnetic Spectrometer experiment (AMS). We observed that above 90 GV the rigidity dependence of the S flux is identical to the rigidity dependence of Ne-Mg-Si fluxes, which is different from the rigidity dependence of the He-C-O-Fe fluxes. [...]
2023 - 9 p. - Published in : Phys. Rev. Lett. 130 (2023) 211002 Fulltext: PDF;
5.
Temporal Structures in Electron Spectra and Charge Sign Effects in Galactic Cosmic Rays / AMS Collaboration
We present the precision measurements of 11 years of daily cosmic electron fluxes in the rigidity interval from 1.00 to 41.9 GV based on 2.0×108 electrons collected with the Alpha Magnetic Spectrometer (AMS) aboard the International Space Station. The electron fluxes exhibit variations on multiple timescales. [...]
2023 - 11 p. - Published in : Phys. Rev. Lett. 130 (2023) 161001 Fulltext: PDF;
6.
Results from the LHCf Run II in proton-proton collisions at $\sqrt{s}$ = 13 TeV / Tiberio, Alessio (INFN, Florence) ; Adriani, Oscar (INFN, Florence ; Florence U.) ; Berti, Eugenio (INFN, Florence ; Florence U.) ; Bonechi, Lorenzo (INFN, Florence) ; Bongi, Massimo (INFN, Florence ; Florence U.) ; D'Alessandro, Raffaello (INFN, Florence ; Florence U.) ; Castellini, Guido (IFAC, Florence) ; Haguenauer, Maurice (Ec. Polytech., Palaiseau (main)) ; Itow, Yoshitaka (Nagoya U., ISEE ; Nagoya U. (main)) ; Kasahara, Katsuaki (Shibaura Inst. Tech.) et al.
The LHCf experiment, at the Large Hadron Collider (LHC), consists of two small independent calorimeters placed 140 metres away, on opposite sides of the ATLAS interaction point (IP1). LHCf has the capability to measure zero-degree neutral particles, covering the pseudorapidity region above 8.4. [...]
2022 - 6 p. - Published in : PoS EPS-HEP2021 (2022) 105 Fulltext: PDF;
In : European Physics Society conference on High Energy Physics 2021, Online, Online, 26 - 30 Jul 2021, pp.105
7.
LHCf plan for proton-oxygen collisions at LHC / LHCf Collaboration
The LHCf experiment is designed to provide precise measurements of very forward neutral particle production from high energy proton-proton, proton-ion and ion-ion collisions. This information is necessary to test and tune hadronic interaction models used by ground-based cosmic rays experiments to extract the average composition of Ultra High Energy Cosmic Rays. [...]
SISSA, 2022 - 9 p. - Published in : PoS ICRC2021 (2022) 348 Fulltext: PDF;
In : 37th International Cosmic Ray Conference (ICRC 2021), Berlin, Germany, 15 - 22 Jul 2021, pp.348
8.
Status and Prospects of the LHCf and RHICf experiments / LHCf Collaboration
Precise understanding of hadronic interactions at high energies is a key to improve mass composition measurements of very high energy cosmic-rays and to solve the muon excess issue observed in high energy cosmic-ray experiments using an air-shower technique. The LHCf and RHICf experiments measures the differential production cross sections of very forward neutral particle as photons, neutral pions and neutrons at LHC and RHIC, respectively. [...]
SISSA, 2022 - 9 p. - Published in : PoS ICRC2021 (2022) 301 Fulltext: PDF;
In : 37th International Cosmic Ray Conference (ICRC 2021), Berlin, Germany, 15 - 22 Jul 2021, pp.301
9.
Very-forward $\pi^0$ production cross section in proton-proton collisions at $\sqrt {s}$ = 13 TeV measured with the LHCf experiment / LHCf Collaboration
The LHCf experiment, situated at the LHC accelerator, is composed of two independent detectors located at 140 metres from the ATLAS interaction point (IP1) on opposite sides along the beam axis. LHCf covers the pseudorapidity region above 8.4, with the capability to measure zero-degree neutral particles. [...]
SISSA, 2021 - 9 p. - Published in : PoS ICRC2021 (2021) 386 Fulltext: PDF;
In : 37th International Cosmic Ray Conference (ICRC 2021), Berlin, Germany, 15 - 22 Jul 2021, pp.386
10.
Properties of Daily Helium Fluxes / AMS Collaboration
We present the precision measurement of 2824 daily helium fluxes in cosmic rays from May 20, 2011 to October 29, 2019 in the rigidity interval from 1.71 to 100 GV based on 7.6×108 helium nuclei collected with the Alpha Magnetic Spectrometer (AMS) aboard the International Space Station. The helium flux and the helium to proton flux ratio exhibit variations on multiple timescales. [...]
2022 - 10 p. - Published in : Phys. Rev. Lett. 128 (2022) 231102 Fulltext: PDF;

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