Search Results - "Grzonka, D"

Trapped antihydrogen in its ground state by Gabrielse, G, Kalra, R, Kolthammer, W S, McConnell, R, Richerme, P, Grzonka, D, Oelert, W, Sefzick, T, Zielinski, M, Fitzakerley, D W, George, M C, Hessels, E A, Storry, C H, Weel, M, Müllers, A, Walz, J

“…Antihydrogen atoms (H¯) are confined in an Ioffe trap for 15-1000 s-long enough to ensure that they reach their ground state. Though reproducibility challenges…”
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Two-symmetry Penning-Ioffe trap for antihydrogen cooling and spectroscopy by Tardiff, E., Fan, X., Gabrielse, G., Grzonka, D., Hamley, C., Hessels, E.A., Jones, N., Khatri, G., Kolthammer, W.S., Martinez Zambrano, D., Meisenhelder, C., Morrison, T., Nottet, E., Novitski, E., Storry, C.H.

“…High-accuracy spectroscopic comparisons of trapped antihydrogen atoms (H¯) and hydrogen atoms (H) promise to stringently test the fundamental CPT symmetry…”
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One-particle measurement of the antiproton magnetic moment by DiSciacca, J, Marshall, M, Marable, K, Gabrielse, G, Ettenauer, S, Tardiff, E, Kalra, R, Fitzakerley, D W, George, M C, Hessels, E A, Storry, C H, Weel, M, Grzonka, D, Oelert, W, Sefzick, T

“…For the first time a single trapped antiproton (p) is used to measure the p magnetic moment μ(p). The moment μ(p)=μ(p)S/(ℏ/2) is given in terms of its spin S…”
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Determination of the η(')-proton scattering length in free space by Czerwiński, E, Moskal, P, Silarski, M, Bass, S D, Grzonka, D, Kamys, B, Khoukaz, A, Klaja, J, Krzemień, W, Oelert, W, Ritman, J, Sefzick, T, Smyrski, J, Täschner, A, Wolke, M, Zieliński, M

“…Taking advantage of both the high mass resolution of the COSY-11 detector and the high energy resolution of the low-emittance proton beam of the cooler…”
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Measurement of proton-proton elastic scattering into the Coulomb region at Pbeam = 2.5, 2.8 and 3.2 GeV/c by Xu, H., Zhou, Y., Bechstedt, U., Böker, J., Gillitzer, A., Goldenbaum, F., Grzonka, D., Hu, Q., Khoukaz, A., Klehr, F., Lorentz, B., Prasuhn, D., Ritman, J., Schadmand, S., Sefzick, T., Stockmanns, T., Strakovsky, I.I., Täschner, A., Wilkin, C., Workman, R.L., Wüstner, P.

“…The proton–proton elastic differential cross section at very small four momentum transfer squared has been measured at three different incident proton momenta…”
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Background-free observation of cold antihydrogen with field-ionization analysis of its states by Gabrielse, G, Bowden, N S, Oxley, P, Speck, A, Storry, C H, Tan, J N, Wessels, M, Grzonka, D, Oelert, W, Schepers, G, Sefzick, T, Walz, J, Pittner, H, Hänsch, T W, Hessels, E A

“…A background-free observation of cold antihydrogen atoms is made using field ionization followed by antiproton storage, a detection method that provides the…”
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First laser-controlled antihydrogen production by STORRY, C. H, SPECK, A, HERRMANN, M, WALZ, J, HÄNSCH, T. W, COMEAU, D, HESSELS, E. A, LE SAGE, D, GUISE, N, GABRIELSE, G, GRZONKA, D, OELERT, W, SCHEPERS, G, SEFZICK, T, PITTNER, H

“…Lasers are used for the first time to control the production of antihydrogen (H ). Sequential, resonant charge exchange collisions are involved in a method…”
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Design of a detector to study S=−2$S = - 2$ baryon interactions induced by stopped antiproton annihilation by Alfs, D., Grzonka, D., Kilian, K., Ritman, J., Sefzick, T.

“…Stopped antiproton annihilation can initiate an effcient chain of reactions to produce Ξ hyperons in recoil free kinematics, suitable for further…”
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Adiabatic cooling of antiprotons by Gabrielse, G, Kolthammer, W S, McConnell, R, Richerme, P, Kalra, R, Novitski, E, Grzonka, D, Oelert, W, Sefzick, T, Zielinski, M, Fitzakerley, D, George, M C, Hessels, E A, Storry, C H, Weel, M, Müllers, A, Walz, J

“…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…”
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Antihydrogen production within a Penning-Ioffe trap by Gabrielse, G, Larochelle, P, Le Sage, D, Levitt, B, Kolthammer, W S, McConnell, R, Richerme, P, Wrubel, J, Speck, A, George, M C, Grzonka, D, Oelert, W, Sefzick, T, Zhang, Z, Carew, A, Comeau, D, Hessels, E A, Storry, C H, Weel, M, Walz, J

“…Slow antihydrogen (H) is produced within a Penning trap that is located within a quadrupole Ioffe trap, the latter intended to ultimately confine extremely…”
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Measurement of polarization observables of the associated strangeness production in proton proton interactions by Hauenstein, F., Borodina, E., Clement, H., Doroshkevich, E., Dzhygadlo, R., Ehrhardt, K., Eyrich, W., Gast, W., Gillitzer, A., Grzonka, D., Jowzaee, S., Klaja, P., Kober, L., Kilian, K., Krapp, M., Mertens, M., Moskal, P., Ritman, J., Roderburg, E., Röder, M., Schroeder, W., Sefzick, T., Smyrski, J., Wintz, P., Wüstner, P.

“… The Λ polarization, the analyzing power, and the Λ spin transfer coefficient of the reaction pp → pK + Λ were measured at beam momenta of 2.70GeV/c and…”
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Polarization analysis of p̄ produced in pA collisions by Grzonka, D., Alfs, D., Asaturyan, A., Carmignotto, M., Diermaier, M., Eyrich, W., Głowacz, B., Hauenstein, F., Horn, T., Kilian, K., Lersch, D., Malbrunot-Ettenauer, S., Mkrtchyan, A., Mkrtchyan, H., Moskal, P., Nadel-Turonski, P., Oelert, W., Ritman, J., Sefzick, T., Tadevosyan, V., Widmann, E., Wolke, M., Zhamkochyan, S., Zieliński, M., Zink, A., Zmeskal, J.

“…A quite simple procedure for the generation of a polarized antiproton beam could be worked out if antiprotons are produced with some polarization. In order to…”
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First measurement of the velocity of slow antihydrogen atoms by GABRIELSE, G, SPECK, A, WALZ, J, HÄNSCH, T. W, COMEAU, D, HESSELS, E. A, STORRY, C. H, LESAGE, D, GUISE, N, GRZONKA, D, OELERT, W, SCHEPERS, G, SEFZICK, T, PITTNER, H

“…The speed of antihydrogen atoms is deduced from the fraction that passes through an oscillating electric field without ionizing. The weakly bound atoms used…”
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Search for polarized antiproton production by Grzonka, D., Alfs, D., Asaturyan, A., Carmignotto, M., Diermaier, M., Eyrich, W., Głowacz, B., Hauenstein, F., Horn, T., Kilian, K., Lersch, D., Malbrunot-Ettenauer, S., Mkrtchyan, A., Mkrtchyan, H., Moskal, P., Nadel-Turonski, P., Oelert, W., Ritman, J., Sefzick, T., Tadevosyan, V., Widmann, E., Wolke, M., Zhamkochyan, S., Zieliński, M., Zink, A., Zmeskal, J.

“…The production of antiprotons is studied in view of possible polarization effects as basis for a polarized antiproton beam. If antiprotons are produced with…”
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Drift chamber calibration and particle identification in the P-349 experiment by Alfs, D., Asaturyan, A., Carmignotto, M., Diermaier, M., Eyrich, W., Głowacz, B., Grzonka, D., Hauenstein, F., Horn, T., Kilian, K., Lersch, D., Malbrunot-Ettenauer, S., Mkrtchyan, A., Mkrtchyan, H., Moskal, P., Nadel-Turonski, P., Oelert, W., Ritman, J., Sefzick, T., Tadevosyan, V., Widmann, E., Wolke, M., Zhamkochyan, S., Zieliński, M., Zink, A., Zmeskal, J.

“…The goal of the P-349 experiment is to test whether 3.5 GeV/c antiprotons produced in high-energy proton-proton collisions are polarized in view of the…”
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Determination of the total width of the η' meson by Czerwiński, E, Moskal, P, Grzonka, D, Czyzykiewicz, R, Gil, D, Kamys, B, Khoukaz, A, Klaja, J, Klaja, P, Krzemień, W, Oelert, W, Ritman, J, Sefzick, T, Siemaszko, M, Silarski, M, Smyrski, J, Täschner, A, Wolke, M, Wüstner, P, Zdebik, J, Zieliński, M, Zipper, W

“…Taking advantage of both the low-emittance proton beam of the cooler synchrotron COSY and the high momentum precision of the COSY-11 detector system, the mass…”
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Efficient transfer of positrons from a buffer-gas-cooled accumulator into an orthogonally oriented superconducting solenoid for antihydrogen studies by Comeau, D, Dror, A, Fitzakerley, D W, George, M C, Hessels, E A, Storry, C H, Weel, M, Grzonka, D, Oelert, W, Gabrielse, G, Kalra, R, Kolthammer, W S, McConnell, R, Richerme, P, Müllers, A, Walz, J

“…Positrons accumulated in a room-temperature buffer-gas-cooled positron accumulator are efficiently transferred into a superconducting solenoid which houses the…”
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Measurement of the invariant mass distributions for the pp → pp η ′ reaction at excess energy of Q = 16.4   MeV by Klaja, P., Moskal, P., Czerwiński, E., Czyżykiewicz, R., Deloff, A., Gil, D., Grzonka, D., Jarczyk, L., Kamys, B., Khoukaz, A., Klaja, J., Nakayama, K., Oelert, W., Ritman, J., Sefzick, T., Siemaszko, M., Silarski, M., Smyrski, J., Täschner, A., Wolke, M., Zdebik, J., Zieliński, M., Zipper, W.

“…The proton–proton and proton– η ′ invariant mass distributions have been determined for the pp → pp η ′ reaction at an excess energy of Q = 16.4   MeV . The…”
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Driven Production of Cold Antihydrogen and the First Measured Distribution of Antihydrogen States by Gabrielse, G., Bowden, N. S., Oxley, P., Speck, A., Storry, C. H., Tan, J. N., Wessels, M., Grzonka, D., Oelert, W., Schepers, G., Sefzick, T., Walz, J., Pittner, H., Hänsch, T. W., Hessels, E. A.

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Centrifugal separation of antiprotons and electrons by Gabrielse, G, Kolthammer, W S, McConnell, R, Richerme, P, Wrubel, J, Kalra, R, Novitski, E, Grzonka, D, Oelert, W, Sefzick, T, Zielinski, M, Borbely, J S, Fitzakerley, D, George, M C, Hessels, E A, Storry, C H, Weel, M, Müllers, A, Walz, J, Speck, A

“…Centrifugal separation of antiprotons and electrons is observed, the first such demonstration with particles that cannot be laser cooled or optically imaged…”
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