Results 41 to 50 of about 30,906 (248)
Constraining the Higgs portal with antiprotons [PDF]
, 2014 The scalar Higgs portal is a compelling model of dark matter (DM) in which a renormalizable coupling with the Higgs boson provides the connection between the visible world and the dark sector.
Urbano, Alfredo, Xue, Wei
core +3 more sources
AMS-02 antiprotons and dark matter: Trimmed hints and robust bounds
SciPost Physics, 2022 Based on 4 yr AMS-02 antiproton data, we present bounds on the dark matter (DM) annihilation cross section vs. mass for some representative final state channels.
Francesca Calore, Marco Cirelli, Laurent Derome, Yoann Genolini, David Maurin, Pierre Salati, Pasquale D. Serpico
doaj +1 more source
Antiproton production in Ni+Ni collisions at 1.85 GeV/nucleon [PDF]
, 1994 Antiproton production in Ni+Ni collisions at 1.85 GeV/nucleon is studied in the relativistic Vlasov-Uehling-Uhlenbeck model. The self-energies of the antiproton are determined from the nucleon self-energies by the G-parity transformation. Also, the final-
Ko, C. M., Li, G. Q.
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Particles, Strings and Cosmology (PASCOS 99), 2000 Cosmic ray antiprotons have been detected for over 20 years and are now measured reliably. Standard particle and astrophysics predict a conventional spectrum and abundance of secondary antiprotons consistent with all current measurements. These measurements place limits on exotic Galactic antiproton sources and non-standard antiproton properties ...
openaire +2 more sources
Antiproton-Proton Channels in J/psi Decays
, 2005 The recent measurements by the BES Collaboration of J/psi decays into a photon and a proton-antiproton pair indicate a strong enhancement at the proton-antiproton threshold not observed in the decays into a neutral pion and a proton-antiproton pair.
B. Loiseau +3 more
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Precision laser spectroscopy experiments on antiprotonic helium
EPJ Web of Conferences, 2018 At CERN‘s Antiproton Decelerator (AD) facility, the Atomic Spectroscopyand Collisions Using Slow Antiprotons (ASACUSA) collaboration is carrying out precise laser spectroscopy experiments on antiprotonic helium (p̅He+ ≡ p̅+He2++e−) atoms.
Hori Masaki
doaj +1 more source
Enhancing Data Management in Nuclear Physics through a F.A.I.R.- Compliant Metadata Schema [PDF]
EPJ Web of ConferencesWithin the field of experimental nuclear physics, steps are underway to further advance good Research Data Management practices. At the heart of this is the goal of generating well-described F.A.I.R.-level experimental data and ensuring compliance with ...
Knežević I., Mistry A.K.
doaj +1 more source
A method to polarise antiprotons in storage rings and create polarised antineutrons
, 2009 An intense circularely polarised photon beam interacts with a cooled antiproton beam in a storage ring. Due to spin dependent absorption cross sections for the reaction gamma+antiproton > pi- + antineutron a built-up of polarisation of the stored ...
B. Schoch +10 more
core +1 more source
New Experiments with Antiprotons [PDF]
Proceedings of 35th International Conference of High Energy Physics — PoS(ICHEP 2010), 2010 Fermilab operates the world's most intense antiproton source. Newly proposed experiments can use those antiprotons either parasitically during Tevatron Collider running or after the Tevatron Collider finishes. For example, the annihilation of 8 GeV antiprotons is expected to yield world-leading sensitivities to hyperon rare decays and CP violation.
openaire +6 more sources
Adiabatic Cooling of Antiprotons
Physical Review Letters, 2011 Adiabatic cooling is shown to be a simple and effective method to cool many charged particles in a trap to very low temperatures. Up to 3×10(6) p are cooled to 3.5 K-10(3) times more cold p and a 3 times lower p temperature than previously reported. A second cooling method cools p plasmas via the synchrotron radiation of embedded e(-) (with many fewer ...
Gabrielse, G. +16 more
openaire +5 more sources