Results 41 to 50 of about 153,444 (258)

Cosmic-ray electron-positron spectrum from 7 GeV to 2 TeV with the Fermi Large Area Telescope [PDF]

open access: yes, 2017
We present a measurement of the cosmic-ray electron+positron spectrum between 7 GeV and 2 TeV performed with almost seven years of data collected with the Fermi Large Area Telescope.
S. Abdollahi   +98 more
semanticscholar   +1 more source

Measurement of Atmospheric Neutrino Oscillations at 6-56 GeV with IceCube DeepCore [PDF]

open access: yes, 2017
We present a measurement of the atmospheric neutrino oscillation parameters using three years of data from the IceCube Neutrino Observatory. The DeepCore infill array in the center of IceCube enables detection and reconstruction of neutrinos produced by ...
M. Aartsen   +316 more
semanticscholar   +1 more source

Possible indications for new Higgs bosons in the reach of the LHC: N2HDM and NMSSM interpretations

open access: yesEuropean Physical Journal C: Particles and Fields, 2022
In several searches for additional Higgs bosons at the LHC, in particular in a CMS search exploring decays to pairs of top quarks, $$t\bar{t}$$ t t ¯ , and in an ATLAS search studying tau leptons, $$\tau ^+\tau ^-$$ τ + τ - , local excesses of about $$3\,
T. Biekötter   +4 more
doaj   +1 more source

The Radio to GeV Afterglow of GRB 221009A [PDF]

open access: yesThe Astrophysical Journal Letters, 2023
Abstract GRB 221009A (z = 0.151) is one of the closest known long γ-ray bursts (GRBs). Its extreme brightness across all electromagnetic wavelengths provides an unprecedented opportunity to study a member of this still-mysterious class of transients in exquisite detail. We present multiwavelength observations of this extraordinary event,
Laskar, T.   +30 more
openaire   +9 more sources

e-ASTROGAM: a space mission for MeV-GeV gamma-ray astrophysics

open access: yesJournal of Physics, Conference Series, 2019
e-ASTROGAM is an observatory space mission dedicated to the study of the gamma radiation in the range from 0.3 MeV to 3 GeV. The detector is composed by a Silicon tracker, a calorimeter, and an anticoincidence system.
R. Rando, A. De Angelis, M. Mallamaci
semanticscholar   +1 more source

Search for Invisible Decays of Sub-GeV Dark Photons in Missing-Energy Events at the CERN SPS. [PDF]

open access: yesPhysical Review Letters, 2016
We report on a direct search for sub-GeV dark photons (A^{'}), which might be produced in the reaction e^{-}Z→e^{-}ZA^{'} via kinetic mixing with photons by 100 GeV electrons incident on an active target in the NA64 experiment at the CERN SPS.
D. Banerjee   +45 more
semanticscholar   +1 more source

Combined search for the standard model Higgs boson with the D0 experiment

open access: yesEPJ Web of Conferences, 2013
We present searches for the standard model Higgs boson using up to 9.7 fb−1 of pp¯$par p$ collisions collected with the D0 detector at Fermi lab. The analyses consist in a series of distinct final states and are sensitive to Higgs boson masses (MH ...
Chapon Émilien
doaj   +1 more source

Charged fermions below 100 GeV [PDF]

open access: yes, 2018
A bstractHow light can a fermion be if it has unit electric charge? We revisit the lore that LEP robustly excludes charged fermions lighter than about 100 GeV. We review LEP chargino searches, and find them to exclude charged fermions lighter than 90 GeV,
D. Egaña-Ugrinovic, M. Low, J. Ruderman
semanticscholar   +1 more source

Precision Measurement of the (e^{+}+e^{-}) Flux in Primary Cosmic Rays from 0.5 GeV to 1 TeV with the Alpha Magnetic Spectrometer on the International Space Station. [PDF]

open access: yesPhysical Review Letters, 2016
We present a measurement of the cosmic ray (e^{+}+e^{-}) flux in the range 0.5 GeV to 1 TeV based on the analysis of 10.6 million (e^{+}+e^{-}) events collected by AMS. The statistics and the resolution of AMS provide a precision measurement of the flux.
M. Aguilar   +286 more
semanticscholar   +1 more source

Triply charged Higgs bosons at a 100 TeV pp collider

open access: yesEuropean Physical Journal C: Particles and Fields, 2021
In this work, we study the potential of searching for triply charged Higgs boson originating from a complex Higgs quadruplet in the final state with at least three same-sign leptons.
Junxing Pan   +4 more
doaj   +1 more source

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