Results 101 to 110 of about 41,826 (280)

On the possibility of extracting part of a beam of negatively charged particles from an accelerator using a bent crystal

European Physical Journal C: Particles and Fields, 2023
The efficiency of deflection of high-energy negatively charged particles by a bent crystal using planar channeling and stochastic deflection mechanism is compared.
I. V. Kyryllin, N. F. Shul’ga
doaj   +1 more source

Probing of compact baryonic configurations in nuclei in $A(p,{\bar p})X$ reactions and antiproton formation length in nuclear matter

, 2012
Inclusive cross sections $\sigma^A=Ed^3{\sigma(X,P_t^2)/d^3p}$ of antiproton and negative pion production on Be, Al, Cu and Ta targets hit by 10 GeV protons were measured at the laboratory angles of 10.5$^{\circ}$ and 59$^{\circ}$.
Akindinov, A. V., Chumakov, M. M., Kiselev, Yu. T., Martemyanov, A. N., Paryev, E. Ya., Sheinkman, V. A., Smirnitsky, V. A., Terekhov, Yu. V.   +7 more
core   +1 more source

Physics with Polarized Antiprotons

AIP Conference Proceedings, 2006
Polarized antiprotons produced by spin filtering with an internal polarized gas target provide access to a wealth of single– and double–spin observables, thereby opening a window to physics uniquely accessible with the HESR at FAIR. This includes a first measurement of the transversity distribution of the valence quarks in the proton, and a first ...
Paolo Lenisa, D. P. Barber, N. Buttimore, S. Chattopadhyay, G. Court, E. Steffens   +5 more
openaire   +5 more sources

On the Square Speed of Sound in High‐Energy Collisions: Range of Values and How to Understand It

Advances in High Energy Physics, Volume 2025, Issue 1, 2025.
After reviewing the sound speeds in various forms and conditions of matter, we investigate the sound speed of hadronic matter that has decoupled from the hot and dense system formed during high‐energy collisions. We comprehensively consider factors such as energy loss of the incident beam, rapidity shift of leading nucleons, and the Landau hydrodynamic
Ting-Ting Duan, Fu-Hu Liu, Khusniddin K. Olimov, Xiao Yan Chew   +3 more
wiley   +1 more source

Recent Developments from ASACUSA on Antihydrogen Detection

EPJ Web of Conferences, 2018
The ASACUSA Collaboration at CERNs Antiproton Decelerator aims to measure the ground state hyperfine splitting of antihydrogen with high precision to test the fundamental symmetry of CPT (combination of charge conjugation, parity transformation, and time
Kolbinger B., Amsler C., Breuker H., Diermaier M., Dupré P., Fleck M., Gligorova A., Higaki H., Kanai Y., Kobayashi T., Leali M., Mäckel V., Malbrunot C., Mascagna V., Massiczek O., Matsuda Y., Murtagh D.j., Nagata Y., Sauerzopf C., Simon M.C., Tajima M., Ulmer S., Kuroda N., Venturelli L., Widmann E., Yamazaki Y., Zmeskal J.   +26 more
doaj   +1 more source

Compression of Antiproton Clouds for Antihydrogen Trapping

, 2008
Control of the radial profile of trapped antiproton clouds is critical to trapping antihydrogen. We report the first detailed measurements of the radial manipulation of antiproton clouds, including areal density compressions by factors as large as ten ...
A. Olin, A. Povilus, C. C. Bray, C. L. Cesar, D. M. Silveira, D. P. van der Werf, D. R. Gill, E. Butler, E. Sarid, F. Chen, F. Robicheaux, G. B. Andresen, H. Grote, H. A. Torii, J. Fajans, J. Fajans, J. S. Hangst, J. S. Wurtele, J. W. Storey, J. F. Ziegler, K. Olchanski, L. Kurchaninov, L. V. Jørgensen, M. C. Fujiwara, M. Charlton, M. E. Hayden, M. J. Jenkins, N. Kuroda, N. Madsen, P. D. Bowe, P. Nolan, P. Pusa, R. Funakoshi, R. Hydomako, R. I. Thompson, R. Lambo, R. S. Hayano, S. Chapman, S. Seif El Nasr, W. Bertsche, W. N. Hardy, Y. Yamazaki   +41 more
core   +1 more source

Confinement of a Large Number of Antiprotons and Production of an Ultraslow Antiproton Beam [PDF]

Physical Review Letters, 2005
We have used a radio frequency quadrupole decelerator to decelerate antiprotons emerging from the CERN Antiproton Decelerator from MeV- to keV-scale energy, and collected five decelerated pulses in a multiring trap. Some 5 x 10(6) antiprotons were stacked in this way.
Kuroda, Naofumi, Torii, Hiroyuki A., Yoshiki, Franzen Ken, Wang, Zhrgang, Yoneda, Satoshi, Inoue, Masato, Hori, Masaki, Juhász, Bertalan, Horváth, Dezso, Higaki, Hiroyuki, Mohri, Akihiro, Eades, John, Komaki, Ken-ichiro, Yamazaki, Yasunori   +13 more
openaire   +4 more sources

Quarks unter Hochdruck im Proton

Physik in unserer Zeit, Volume 55, Issue 6, Page 298-306, November 2024.
Schon vor etwa 90 Jahren haben Experimente gezeigt, dass das Proton kein punktförmiges Elementarteilchen ist, wie das Elektron, sondern eine innere Struktur aufweist. Dies war der Beginn der Protonstrukturforschung, die vor Kurzem mit der Messung des Drucks im Innern des Protons einen spannenden Höhepunkt erreicht hat.
Volker Burkert, Stefan Diehl, Peter Schweitzer   +2 more
wiley   +1 more source

CERN ELENA project progress report

EPJ Web of Conferences, 2015
The Extra Low Energy Antiproton ring (ELENA) is a CERN project aiming at constructing a 30 m circumference synchrotron to further decelerate antiprotons from the Antiproton Decelerator (AD) from 5.3 MeV to 100 keV.
Bartmann Wolfgang, Belochitskii Pavel, Breuker Horst, Butin François, Carli C., Eriksson Tommy, Oelert Walter, Maury Stephan, Pasinelli Sergio, Tranquille Gerard   +9 more
doaj   +2 more sources

A phenomenological analysis of antiproton interactions at low energies [PDF]

, 2000
We present an optical potential analysis of the antiproton-proton interactions at low energies. Our optical potential is purely phenomenological, and has been parametrized on data recently obtained by the Obelix Collaboration at momenta below 180 MeV/c ...
A Bianconi, A Zenoni, Armstrong, Ashford, Augsburger, Balestra, Balestra, Balestra, Bertin, Bizzarri, Brückner, Brückner, Brückner, Carbonell, Cresti, E Lodi Rizzini, G Bonomi, Iwasaki, L Venturelli, Linssen, M.P Bussa, Wycech, Zenoni, Zenoni   +23 more
core   +3 more sources