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We report here the measurements of the energy spectra of atmospheric muons and of the cosmic ray primary proton and helium nuclei in a single experiment. These were carried out using the MASS superconducting spectrometer in a balloon flight…

High Energy Physics - Experiment · Physics 2008-11-26 MASS2 Collaboration

A recent analysis of cosmic-ray data from a space borne experiment by the AMS collaboration supports the observation of an excess in the cosmic-ray positron spectrum by previous balloon experiments. The combination of the various…

Astrophysics · Physics 2007-10-15 C. H. Chung , H. Gast , J. Olzem , S. Schael

Cosmic-ray proton and helium spectra have been measured with the balloon-borne Cosmic Ray Energetics And Mass experiment flown for 42 days in Antarctica in the 2004-2005 austral summer season. High-energy cosmic-ray data were collected at…

The Gamma-Ray and AntiMatter Survey (GRAMS) is a next-generation experiment using a Liquid Argon Time Projection Chamber (LArTPC) detector to measure MeV gamma rays and antiparticles. MeV gamma-ray observations are important for…

The pattern of oscillation parameters emerging from current experimental data can be further elucidated by the observation of matter effects. In contrast to planned experiments with conventional neutrino beams, atmospheric neutrinos offer…

High Energy Physics - Phenomenology · Physics 2011-09-13 T. Tabarelli de Fatis

AMS-02 is a cosmic ray experiment that will be placed on the International Space Station. One of its goals is to search for WIMP Dark Matter, specifically from anomalous features in the positron spectrum. In order to identify positrons at…

Instrumentation and Detectors · Physics 2017-08-23 G. Carosi

We used a backtracing code to reconstruct particle trajectory inside the Earth Magnetosphere during the last solar active period (2011 and 2012) when very high Solar Wind pressure values were measured. We compared our results on AMS-02…

Instrumentation and Methods for Astrophysics · Physics 2013-07-22 M. J. Boschini , C. Consolandi , S. Della Torre , M. Gervasi , D. Grandi , S. Haino , G. La Vacca , S. Pensotti , P. G. Rancoita , D. Rozza , M. Tacconi

Results of a search for new phenomena in final states with an energetic jet and large missing transverse momentum are reported. The search uses proton--proton collision data corresponding to an integrated luminosity of 36.1 fb${}^{-1}$ at a…

High Energy Physics - Experiment · Physics 2018-02-05 ATLAS Collaboration

The AEgIS (Antimatter Experiment: Gravity, Interferometry, Spectroscopy) experiment, located at the Antimatter Factory at CERN, aims to study the asymmetry between matter and antimatter. In particular, its first goal is to measure the…

High Energy Physics - Experiment · Physics 2023-06-08 Marco Volponi

Since its launch, the Alpha Magnetic Spectrometer-02 (AMS-02) has delivered outstanding quality measurements of the spectra of cosmic-ray (CR) species, $\bar{p}$, $e^{\pm}$, and nuclei (H-Si, Fe), which resulted in a number of…

We analyze the data of low-energy cosmic-ray antiproton spectrum, recently published by the BESS Collaboration, in terms of newly calculated fluxes for secondary antiprotons and for a possible contribution of an exotic signal due to…

Astrophysics · Physics 2010-11-30 A. Bottino , F. Donato , N. Fornengo , P. Salati

The AMS-02 detector will operate for at least 3 years on the International Space Station, measuring cosmic ray spectra at about 400 km above sea level over a wide range of geomagnetic latitude. The proximity focusing ring imaging…

High Energy Physics - Experiment · Physics 2017-07-24 D. Casadei

In this work we perform a comprehensive statistical analysis of the AMS-02 electron, positron fluxes and the antiproton-to-proton ratio in the context of a simplified dark matter model. We include known, standard astrophysical sources and a…

High Energy Physics - Phenomenology · Physics 2016-05-25 Csaba Balázs , Tong Li

High-energy Li-Be-B nuclei in cosmic rays are being measured with unprecedent accuracy by the AMS experiment. These data bring valuable information to the cosmic ray propagation physics. In particular, combined measurements of B/C and Be/B…

High Energy Astrophysical Phenomena · Physics 2015-10-27 Nicola Tomassetti

In 2017, ATLAS has been equipped with a new, dedicated detector system allowing measurements of forward protons scattered at small angles in diffractive and electromagnetic processes. These ATLAS Forward Proton detectors (AFP) can operate…

Instrumentation and Detectors · Physics 2020-02-17 Maciej Trzebinski

The General AntiParticle Spectrometer experiment (GAPS) is foreseen to carry out a dark matter search using low-energy cosmic ray antideuterons at stratospheric altitudes with a novel detection approach. A prototype flight from Taiki, Japan…

Instrumentation and Methods for Astrophysics · Physics 2014-01-15 P. von Doetinchem , T. Aramaki , N. Bando , S. E. Boggs , H. Fuke , F. H. Gahbauer , C. J. Hailey , J. E. Koglin , S. A. I. Mognet , N. Madden , S. Okazaki , R. A. Ong , K. M. Perez , T. Yoshida , J. Zweerink

The AMS detector, to be installed on the International Space Station, includes a Ring Imaging Cerenkov detector with two different radiators, silica aerogel (n=1.05) and sodium fluoride (n=1.334). This detector is designed to provide very…

Recent measurements of cosmic ray electron energy spectra suggest that above 10 GeV there may be deviations from a single power law spectrum. There are hints (ATIC) for a bump occurring between 100 GeV and 1TeV, meaning that there might be…

High Energy Astrophysical Phenomena · Physics 2017-08-23 Andrea Tartari , Massimo Gervasi , Giorgio Sironi , Mario Zannoni , Sebastiano Spinelli

Substantial fluxes of protons and leptons with energies below the geomagnetic cutoff have been measured by the AMS experiment at altitudes of 370-390 Km, in the latitude interval +/- 51.7 degrees. The production mechanisms of the observed…

We measured low energy cosmic-ray proton and helium spectra in the kinetic energy range 0.215 - 21.5 GeV/n at different solar activities during a period from 1997 to 2002. The observations were carried out with the BESS spectrometer…