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Your search keyword '"Bass, S.D."' showing total 42 results
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42 results on '"Bass, S.D."'

1. The J-PET detector—a tool for precision studies of ortho-positronium decays

Author

Dulski, K., Bass, S.D., Chhokar, J., Chug, N., Curceanu, C., Czerwiński, E., Dagdar, M., Gajewski, J., Gajos, A., Gorgol, M., Del Grande, R., Hiesmayr, B.C., Jasińska, B., Kacprzak, K., Kapłon, Ł., Karimi, H., Kisielewska, D., Klimaszewski, K., Kopka, P., Korcyl, G., Kowalski, P., Kozik, T., Krawczyk, N., Krzemień, W., Kubicz, E., Małczak, P., Mohammed, M., Niedźwiecki, Sz., Pałka, M., Pawlik-Niedźwiecka, M., Pędziwiatr, M., Raczyński, L., Raj, J., Ruciński, A., Sharma, S., Shivani, Shopa, R.Y., Silarski, M., Skurzok, M., Stępień, E.Ł., Tayefi, F., Wiślicki, W., Zgardzińska, B., and Moskal, P.

Published
2021
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6. Search for η mesic 3He with the WASA-at-COSY facility in the pd→3He2γ and pd→3He6γ reactions

Author

Adlarson, P., primary, Augustyniak, W., additional, Bardan, W., additional, Bashkanov, M., additional, Bass, S.D., additional, Berłowski, M., additional, Bondar, A., additional, Büscher, M., additional, Calén, H., additional, Ciepał, I., additional, Clement, H., additional, Czerwiński, E., additional, Engels, R., additional, Erven, A., additional, Erven, W., additional, Eyrich, W., additional, Fedorets, P., additional, Föhl, K., additional, Fransson, K., additional, Goldenbaum, F., additional, Goswami, A., additional, Grigoryev, K., additional, Heijkenskjöld, L., additional, Hejny, V., additional, Hirenzaki, S., additional, Jarczyk, L., additional, Johansson, T., additional, Kamys, B., additional, Kelkar, N.G., additional, Kemmerling, G., additional, Khreptak, A., additional, Kirillov, D.A., additional, Kistryn, S., additional, Kleines, H., additional, Kłos, B., additional, Krzemień, W., additional, Kulessa, P., additional, Kupść, A., additional, Lalwani, K., additional, Lersch, D., additional, Lorentz, B., additional, Magiera, A., additional, Maier, R., additional, Marciniewski, P., additional, Mariański, B., additional, Morsch, H.-P., additional, Moskal, P., additional, Ohm, H., additional, Parol, W., additional, Perez del Rio, E., additional, Piskunov, N.M., additional, Prasuhn, D., additional, Pszczel, D., additional, Pysz, K., additional, Ritman, J., additional, Roy, A., additional, Rundel, O., additional, Sawant, S., additional, Schadmand, S., additional, Schätti–Ozerianska, I., additional, Sefzick, T., additional, Serdyuk, V., additional, Shwartz, B., additional, Skorodko, T., additional, Skurzok, M., additional, Smyrski, J., additional, Sopov, V., additional, Stassen, R., additional, Stepaniak, J., additional, Stephan, E., additional, Sterzenbach, G., additional, Stockhorst, H., additional, Ströher, H., additional, Szczurek, A., additional, Trzciński, A., additional, Wolke, M., additional, Wrońska, A., additional, Wüstner, P., additional, Yamamoto, A., additional, Zabierowski, J., additional, Zieliński, M.J., additional, Złomańczuk, J., additional, Żuprański, P., additional, and Żurek, M., additional

Published
2020
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8. Search for Mesic He with the WASA-at-COSY facility in the And Reactions

Author

Adlarson, P., Augustyniak, W., Bardan, W., Bashkanov, M., Bass, S.D., Berłowski, M., Bondar, A., Büscher, M., Calén, H., Ciepał, I., Clement, H., Czerwiński, E., Engels, R., Erven, A., Erven, W., Eyrich, W., Fedorets, P., Föhl, K., Fransson, K., Goldenbaum, F., Goswami, A., Grigoryev, K., Heijkenskjöld, L., Hejny, V., Hirenzaki, S., Jarczyk, L., Johansson, T., Kamys, B., Kelkar, N.G., Kemmerling, G., Khreptak, A., Kirillov, D.A., Kistryn, S., Kleines, H., Kłos, B., Krzemień, W., Kulessa, P., Kupść, A., Lalwani, K., Lersch, D., Lorentz, B., Magiera, A., Maier, R., Marciniewski, P., Mariański, B., Morsch, H.P., Moskal, P., Ohm, H., Parol, W., Perez del Rio, E., Piskunov, N.M., Prasuhn, D., Pszczel, D., Pysz, K., Ritman, J., Roy, A., Rundel, O., Sawant, S., Schadmand, S., Schätti–Ozerianska, I., Sefzick, T., Serdyuk, V., Shwartz, B., Skorodko, T., Skurzok, M., Smyrski, J., Sopov, V., Stassen, R., Stepaniak, J., Stephan, E., Sterzenbach, G., Stockhorst, H., Ströher, H., Szczurek, A., Trzciński, A., Wolke, M., Wrońska, A., Wüstner, P., Yamamoto, A., Zabierowski, J., Zieliński, M.J., Złomańczuk, J., Żuprański, P., and Żurek, M.

Abstract

We report on the experimental search for the bound state of an η meson and He3 nucleus performed using the WASA-at-COSY detector setup. In order to search for the η-mesic nucleus decay, the pd→3He2γ and pd→3He6γ channels have been analysed. These reactions manifest the direct decay of the η meson bound in a He3 nucleus. This non-mesonic decay channel has been considered for the first time. When taking into account only statistical errors, the obtained excitation functions reveal a slight indication for a possible bound state signal corresponding to a $^{3}$He-η nucleus width Γ above 20 MeV and binding energy Bs between 0 and 15 MeV. However, the determined cross sections are consistent with zero in the range of the systematic uncertainty. Therefore, as final result we estimate only the upper limit for the cross section of the η-mesic He3 nucleus formation followed by the η meson decay which varies between 2 nb and 15 nb depending on possible bound state parameters.

Published
2020

9. Search for η mesic 3He with the WASA-at-COSY facility in the pd→3He2γ and pd →3He6γ reactions

Author

Adlarson, P., Augustyniak, W., Bardan, W., Bashkanov, M., Bass, S.D., Berłowski, M., Bondar, A., Büscher, M., Calén, H., Ciepał, I., Clement, H., Czerwiński, E., Engels, N., Erven, A., Erven, W., Eyrich, W., Fedorets, P., Föhl, K., Fransson, K., Goldenbaum, F., Goswami, A., Grigoryev, K., Heijkenskjöld, L., Hejny, V., Hirenzaki, S., Jarczyk, L., Johansson, T., Kamys, B., Kelkar, N.G., Kemmerling, G., Khreptak, A., Kirillov, D.A., Kistryn, S., Kleines, H., Kłos, Barbara, Krzemień, W., Kulessa, P., Kupść, A., Lalwani, K., Lersch, D., Lorentz, B., Magiera, A., Maier, R., Marciniewski, P., Mariański, B., Morsch, H.-P., Moskal, P., Ohm, H., Parol, W., Roy, A., Rundel, O., Sawant, S., Schadmand, S., Schätti–Ozerianska, I., Sefzick, T., Serdyuk, V., Shwartz, B., Skorodko, T., Skurzok, M., Smyrski, J., Sopov, V., Szczurek, A., Stepaniak, J., Stephan, Elżbieta, Sterzenbach, G., Stockhorst, H., Ströher, H., Trzciński, A., Wolke, M., Wrońska, A., Wüstner, P., Yamamoto, A., Zabierowski, J., Zieliński, M.J., Złomańczuk, J., Żuprański, P., and Żurek, M.

Subjects
η-nucleus interaction, η-mesic nuclei, η meson, Nuclear Experiment
Abstract

We report on the experimental search for the bound state of an ηmeson and 3Henucleus performed using the WASA-at-COSY detector setup. In order to search for the η-mesic nucleus decay, the pd→3He2γand pd →3He6γchannels have been analysed. These reactions manifest the direct decay of the ηmeson bound in a 3Henucleus.This non-mesonic decay channel has been considered for the first time. When taking into account only statistical errors, the obtained excitation functions reveal a slight indication for a possible bound state signal corresponding to a 3He-ηnucleus width above 20 MeV and binding energy Bsbetween 0 and 15 MeV. However, the determined cross sections are consistent with zero in the range of the systematic uncertainty. Therefore, as final result we estimate only the upper limit for the cross section of the η-mesic 3Henucleus formation followed by the ηmeson decay which varies between 2nb and 15nb depending on possible bound state parameters.

Published
2020

32. How the Cyber Defense Exercise Shaped an Information-Assurance Curriculum.

Author

Mullins, B.E., Lacey, T.H., Mills, R.F., Trechter, J.M., and Bass, S.D.

Abstract

In this article, we provide a brief history of the Cyber Defense Exercise (CDX), describe Air Force Institute of Technology (AFIT's) participation in it, and explain how the experience shaped the information-assurance curriculum and course format at AFIT. The CDX is an annual competition designed to give students the opportunity to learn and demonstrate best practices in defensive information assurance. The CDX's fundamental objective is to design and implement a network that provides specified IT services and defend it against an onslaught of cyberattacks and natural events. CDX participants included blue forces (students), red forces (attacker) and a white cell. [ABSTRACT FROM PUBLISHER]

Published
2007
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33. Constituent quarks and g1.

Author

Bass, S.D.

Abstract

We review the theory and present status of the proton spin problem with emphasis on the transition between current quarks and constituent quarks in QCD. [ABSTRACT FROM AUTHOR]

Published
1999
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35. <img src="/fulltext-image.asp?format=htmlnonpaginated&src=XMLY2T4K2A4Q4H46_html\" border="0" alt="$g_1$" /> at low x and low <img src="/fulltext-image.asp?format=htmlnonpaginated&src=XMLY2T4K2A4Q4H46_html\" border="0" alt="$Q^2$" /> with Polarized ep colliders

Author

Bass, S.D. and De Roeck, A.

Abstract

Abstract.: Measurements of at low x and low are expected to provide a sensitive probe of the transition from Regge to perturbative QCD dynamics, offering a new testing ground for models of small x physics. We discuss the potential of polarized ep colliders (Polarized HERA and eRHIC) to investigate this physics – varying between 0.01 and 1 GeV– and to constrain the high-energy part of the Drell-Hearn-Gerasimov sum-rule for polarized photoproduction.

Published
2001
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37. Search for η mesic 3He with the WASA-at-COSY facility in the [formula omitted] and [formula omitted] reactions.

Author

Adlarson, P., Augustyniak, W., Bardan, W., Bashkanov, M., Bass, S.D., Berłowski, M., Bondar, A., Büscher, M., Calén, H., Ciepał, I., Clement, H., Czerwiński, E., Engels, R., Erven, A., Erven, W., Eyrich, W., Fedorets, P., Föhl, K., Fransson, K., and Goldenbaum, F.

Subjects
*BOUND states, *BINDING energy, *STATISTICAL errors, *PROTON-proton interactions, *MESONS, MESON decay
Abstract

We report on the experimental search for the bound state of an η meson and He 3 nucleus performed using the WASA-at-COSY detector setup. In order to search for the η -mesic nucleus decay, the p d → 3 He 2 γ and p d → 3 He 6 γ channels have been analysed. These reactions manifest the direct decay of the η meson bound in a He 3 nucleus. This non-mesonic decay channel has been considered for the first time. When taking into account only statistical errors, the obtained excitation functions reveal a slight indication for a possible bound state signal corresponding to a 3He- η nucleus width Γ above 20 MeV and binding energy B s between 0 and 15 MeV. However, the determined cross sections are consistent with zero in the range of the systematic uncertainty. Therefore, as final result we estimate only the upper limit for the cross section of the η -mesic He 3 nucleus formation followed by the η meson decay which varies between 2 nb and 15 nb depending on possible bound state parameters. [ABSTRACT FROM AUTHOR]

Published
2020
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38. A di-muon spectrometer to study charmonium production

Author

Malek, F., Institut de Physique Nucléaire de Lyon (IPNL), Centre National de la Recherche Scientifique (CNRS)-Université Claude Bernard Lyon 1 (UCBL), Université de Lyon-Université de Lyon-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3), Bass S.D. Guichon P.A.M., NA38, and Flores, Sylvie

Subjects
[PHYS.NEXP] Physics [physics]/Nuclear Experiment [nucl-ex], [PHYS.NEXP]Physics [physics]/Nuclear Experiment [nucl-ex]
Published
1995

39. The GRAAL detector

Author

Belmont, J. L., Bocquet, J. P., Bugnet, H., Pascal CALVAT, Faure, F., Perrin, C., Rebreyend, D., Russew, T., Laboratoire de Physique Subatomique et de Cosmologie (LPSC), Université Joseph Fourier - Grenoble 1 (UJF)-Institut polytechnique de Grenoble - Grenoble Institute of Technology (Grenoble INP )-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Institut Polytechnique de Grenoble - Grenoble Institute of Technology-Centre National de la Recherche Scientifique (CNRS), Bass S.D., and bibliotheque, LPSC

Published
1995

40. ELFE: from high energy down

Author

Vincent Breton, Laboratoire de Physique Corpusculaire - Clermont-Ferrand (LPC), Université Blaise Pascal - Clermont-Ferrand 2 (UBP)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), and Bass S.D. Guichon P.A.M.

Subjects
[PHYS.HEXP]Physics [physics]/High Energy Physics - Experiment [hep-ex]
Published
1995

41. MEMUS, a 4$\pi$ detector for ELFE

Author

Bertin, P. Y., Berthot, J., Vincent Breton, Fonvieille, H., Doroshkevitch, E., Vlassov, A., Cavata, C., Fournier, G., Kerhoas, S., Marchand, C., Marie, F., Marroncle, J., Pussieux, T., Vernin, P., Laboratoire de Physique Corpusculaire - Clermont-Ferrand (LPC), Université Blaise Pascal - Clermont-Ferrand 2 (UBP)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), and Bass S.D. Guichon P.A.M.

42. Modelling distribution functions and fragmentation functions

Author

Rodrigues, J., Henneman, A. A., Piet Mulders, Bass, S.D., and Guichon, P.A.M.

Subjects
Nuclear Theory (nucl-th), High Energy Physics - Phenomenology, High Energy Physics - Phenomenology (hep-ph), Nuclear Theory, High Energy Physics::Lattice, High Energy Physics::Phenomenology, FOS: Physical sciences, High Energy Physics::Experiment, Nuclear Experiment
Abstract

We present examples for the calculation of the distribution and fragmentation functions using the representation in terms of non-local matrix elements of quark field operators. As specific examples, we use a simple spectator model to estimate the leading twist quark distribution functions and the fragmentation functions for a quark into a nucleon or a pion., Comment: 5 pages RevTeX, talk presented at the First ELFE School on Confinement Physics, 22-28 July 1995, Cambridge, England

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