Results 91 to 100 of about 30,906 (248)

Modeling of the Near-Earth Low-Energy Antiproton Fluxes

Advances in Astronomy, 2011
The local interstellar antiproton spectrum is simulated taking into account antineutron decay, (He,p) interaction, secondary and tertiary antiproton production, and the solar modulation in the “force field” approximation.
U. B. Jayanthi, A. A. Gusev
doaj   +1 more source

Production of antihydrogen atoms by 6 keV antiprotons through a positronium cloud

European Physical Journal C: Particles and Fields, 2023
We report on the first production of an antihydrogen beam by charge exchange of 6.1 keV antiprotons with a cloud of positronium in the GBAR experiment at CERN.
P. Adrich, P. Blumer, G. Caratsch, M. Chung, P. Cladé, P. Comini, P. Crivelli, O. Dalkarov, P. Debu, A. Douillet, D. Drapier, P. Froelich, N. Garroum, S. Guellati-Khelifa, J. Guyomard, P.-A. Hervieux, L. Hilico, P. Indelicato, S. Jonsell, J.-P. Karr, B. Kim, S. Kim, E.-S. Kim, Y. J. Ko, T. Kosinski, N. Kuroda, B. M. Latacz, B. Lee, H. Lee, J. Lee, E. Lim, L. Liszkay, D. Lunney, G. Manfredi, B. Mansoulié, M. Matusiak, V. Nesvizhevsky, F. Nez, S. Niang, B. Ohayon, K. Park, N. Paul, P. Pérez, C. Regenfus, S. Reynaud, C. Roumegou, J.-Y. Roussé, Y. Sacquin, G. Sadowski, J. Sarkisyan, M. Sato, F. Schmidt-Kaler, M. Staszczak, K. Szymczyk, T. A. Tanaka, B. Tuchming, B. Vallage, A. Voronin, D. P. van der Werf, A. Welker, D. Won, S. Wronka, Y. Yamazaki, K.-H. Yoo, P. Yzombard   +64 more
doaj   +1 more source

A Precision Search for WIMPs with Charged Cosmic Rays

, 2017
AMS-02 has reached the sensitivity to probe canonical thermal WIMPs by their annihilation into antiprotons. Due to the high precision of the data, uncertainties in the astrophysical background have become the most limiting factor for indirect dark matter
Reinert, Annika, Winkler, Martin Wolfgang   +1 more
core   +1 more source

Experimental technique for antiproton-nucleus annihilation cross section measurements at low energy

EPJ Web of Conferences, 2018
The interaction of very low energy antiprotons (ps) and antineutrons (ns) with nuclei is interesting for its influence on both fundamental cosmology and nuclear physics. Measuring the annihilation cross section of antimatter on matter can help in solving
Aghai-Khozani H., Corradini M., Hayano R., Hori M., Leali M., Lodi-Rizzini E., Mascagna V., Murakami Y., Prest M., Solazzi L., Vallazza E., Venturelli L., Yamada H.   +12 more
doaj   +1 more source

Beam instrumentation for the Tevatron Collider [PDF]

, 2009
The Tevatron in Collider Run II (2001-present) is operating with six times more bunches and many times higher beam intensities and luminosities than in Run I (1992-1995).
A Jansson, A. Jansson, A. Jansson ., A. Semenov, A. Semenov ., A. Valishev, A. Valishev ., C.Y. Tan, D. Martin ., D. Martin ., D. McGinnis, J. Slaughter ., J. Steimel ., J.P. Carneiro ., J.T. Volk ., K. Cahill, M. Jones ., P. Ivanov ., R S Moore, R. Pasquinelli ., R. Thurman-Keup, R. Thurman-Keup, R.K. Kutschke, R.K. Kutschke ., R.S. Moore, S. Pordes ., S. Pordes ., S.A. Wolbers ., see also T. Bolshakov, see also V. Kamerdzhiev ., T.B. Bolshakov ., V Shiltsev, V. Ranjbar, W. Schappert .   +33 more
core   +1 more source

Antiproton annihilation inside nuclei [PDF]

Physics Letters B, 1982
Abstract Antiproton annihilation at the center of 40Ca and 108Ag nuclei is studied in the frame of an intranuclear cascade model. Primordial pions, issued from the annihilation, produce a density wave, which ejects about one fifth of the nucleons. The spectra of the emerging nucleons and of the produced pions are studied. For the latter, the spectrum
Cugnon, Joseph, Cahay, M., jasselette, Pierre, Vandermeulen, jacques   +3 more
openaire   +1 more source

Observation of individual spin quantum transitions of a single antiproton

Physics Letters B, 2017
We report on the detection of individual spin quantum transitions of a single trapped antiproton in a Penning trap. The spin-state determination, which is based on the unambiguous detection of axial frequency shifts in presence of a strong magnetic ...
C. Smorra, A. Mooser, M. Besirli, M. Bohman, M.J. Borchert, J. Harrington, T. Higuchi, H. Nagahama, G.L. Schneider, S. Sellner, T. Tanaka, K. Blaum, Y. Matsuda, C. Ospelkaus, W. Quint, J. Walz, Y. Yamazaki, S. Ulmer   +17 more
doaj   +1 more source

Simplified dark matter models in the light of AMS-02 antiproton data

Journal of High Energy Physics, 2017
In this work we perform an analysis of the recent AMS-02 antiproton flux and the antiproton-to-proton ratio in the framework of simplified dark matter models.
Tong Li
doaj   +1 more source

Reanalysis of antiproton production in proton-nucleus and nucleus-nucleus reactions at subthreshold energies

, 1997
We reanalyse the production of $p\bar{p}$ pairs in proton-nucleus and nucleus-nucleus collisions employing novel elementary cross sections for baryon-baryon and pion-baryon production channels based on a boson-exchange model.
A. Sibirtsev, Aichelin, Baldin, Batko, Bertsch, Brack, Bratkovskaya, Byckling, Carrol, Carroll, Cassing, Cassing, Cassing, Cassing, Chamberlain, Chiba, Danielewicz, Dorfan, Ehehalt, Ehehalt, Elioff, G.I. Lykasov, Hammer, Holinde, Huang, Kienle, Ko, Ko, Ko, Koch, Koch, Laget, Landolt-Börnstein, Li, Lykasov, M.V. Rzjanin, Machleidt, Nilsson-Almqvist, Schröter, Schröter, Shor, Shor, Shor, Sibirtsev, Spieles, Teis, Teis, Vandermeulen, W. Cassing, Waas, Weber, Yamazaki   +51 more
core   +1 more source

Novel transverse emittance measurements for electron cooling characterization

Physical Review Accelerators and Beams, 2020
The extra low energy antiproton ring (ELENA) finished commissioning before the start of CERN’s second long shutdown in December 2018, successfully providing beams to a new experimental zone.
J. R. Hunt, J. Resta-López, C. P. Welsch, C. Carli, B. Dupuy, D. Gamba   +5 more
doaj   +1 more source