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69 results on '"Ponta T."'

1. Measurements of the strong-interaction widths of the kaonic 3He and 4He 2p levels

Author

The SIDDHARTA Collaboration, Bazzi, M., Beer, G., Bombelli, L., Bragadireanu, A. M., Cargnelli, M., Curceanu, C., d'Uffizi, A., Fiorini, C., Frizzi, T., Ghio, F., Guaraldo, C., Hayano, R. S., Iliescu, M., Ishiwatari, T., Iwasaki, M., Kienle, P., Sandri, P. Levi, Longoni, A., Marton, J., Okada, S., Pietreanu, D., Ponta, T., Rizzo, A., Vidal, A. Romero, Sbardella, E., Scordo, A., Shi, H., Sirghi, D. L., Sirghi, F., Tatsuno, H., Tudorache, A., Tudorache, V., Doce, O. Vazquez, Wunschek, B., Widmann, E., and Zmeskal, J.

Subjects
Physics, Nuclear and High Energy Physics, X-ray spectroscopy, sezele, 010308 nuclear & particles physics, Strong interaction, Low-energy QCD, FOS: Physical sciences, Kaonic atoms, Antikaon–nucleon physics, 01 natural sciences, Article, Nuclear physics, 0103 physical sciences, Nuclear Experiment (nucl-ex), Atomic physics, 010306 general physics, Nuclear Experiment, Value (mathematics)
Abstract

The kaonic 3He and 4He X-rays emitted in the 3d-2p transitions were measured in the SIDDHARTA experiment. The widths of the kaonic 3He and 4He 2p states were determined to be Gamma_2p(3He) = 6 \pm 6 (stat.) \pm 7 (syst.) eV, and Gamma_2p(4He) = 14 \pm 8 (stat.) \pm 5 (syst.) eV, respectively. Both results are consistent with the theoretical predictions. The width of kaonic 4He is much smaller than the value of 55 \pm 34 eV determined by the experiments performed in the 70's and 80's, while the width of kaonic 3He was determined for the first time., Comment: Accepted in Phys. Lett. B

Published
2012
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2. First measurement of the π+π− atom lifetime

Author

Adeva, B., Afanasyev, L., Benayoun, M., Benelli, A., Berka, Z., Brekhovskikh, V., Caragheorgheopol, G., Cechak, T., Chiba, M., Constantinescu, S., Detraz, C., Dreossi, D., Drijard, D., Dudarev, A., Evangelou, I., Ferro-Luzzi, M., Gallas, M.V., Gerndt, J., Giacomich, R., Gianotti, P., Goldin, D., Gómez, F., Gorin, A., Gorchakov, O., Guaraldo, C., Hansroul, M., Hosek, R., Iliescu, M., Karpukhin, V., Kluson, J., Kobayashi, M., Kokkas, P., Komarov, V., Kruglov, V., Kruglova, L., Kulikov, A., Kuptsov, A., Kurochkin, I., Kuroda, K.-I., Lamberto, A., Lanaro, A., Lapshin, V., Lednicky, R., Leruste, P., Levi Sandri, P., Lopez Aguera, A., Lucherini, V., Maki, T., Manthos, N., Manuilov, I., Montanet, L., Narjoux, J.-L., Nemenov, L., Nikitin, M., Núñez Pardo, T., Okada, K., Olchevskii, V., Pazos, A., Pentia, M., Penzo, A., Perreau, J.-M., Petrascu, C., Pló, M., Ponta, T., Pop, D., Rappazzo, G.F., Rodriguez Fernandez, A., Romero, A., Ryazantsev, A., Rykalin, V., Santamarina, C., Saborido, J., Schacher, J., Schuetz, Ch.P., Sidorov, A., Smolik, J., Takeutchi, F., Tarasov, A., Tauscher, L., Tobar, M.J., Trusov, S., Utkin, V., Vázquez Doce, O., Vázquez, P., Vlachos, S., Yazkov, V., Yoshimura, Y., Zhabitsky, M., and Zrelov, P.

Subjects
Nuclear and High Energy Physics
Published
2005
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3. Strangeness in the Universe? Advances and perspectives in the low-energy kaon-nucleon/nuclei interaction studies at the DA${\Phi}$NE collider

Author

Curceanu, C., Bazzi, M., Ghio, F., Guaraldo, C., Hayano, R. S., Iliescu, M., Ishiwatari, T., Iwasaki, M., Levi Sandri, P., Marton, J., Okada, S., Pietreanu, D., Beer, G., Piscicchia, K., Poli Lener, M., Ponta, T., Quaglia, R., Romero Vidal, A., Sbardella, E., Schembari, F., Scordo, A., Shi, H., Sirghi, D. L., Berucci, C., Tatsuno, H., Tucakovic, I., Vazquez Doce, O., Widmann, E., Zmeskal, J., Bosnar, D., Bragadireanu, A. M., Cargnelli, M., d'Uffizi, A., Fabietti, L., and Fiorini, C.

Subjects
electron positron, Lambda(1405), Physics, atom, Nuclear Theory, formation, interaction [nucleus], K nucleon, beam [K], Frascati Stor, strangeness, nuclear physics, quality, low [energy], Physics::Accelerator Physics, High Energy Physics::Experiment, Nuclear Experiment
Abstract

Contribution to Proceedings, Proc. of PANIC 2014, 269 - 272; DESY-PROC-2014-02; ISSN 1435-8077

Published
2014
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4. First $��K$ atom lifetime and $��K$ scattering length measurements

Author

Adeva, B., Afanasyev, L., Allkofer, Y., Amsler, C., Anania, A., Aogaki, S., Benelli, A., Brekhovskikh, V., Cechak, T., Chiba, M., Chliapnikov, P., Ciocarlan, C., Constantinescu, S., Doskarova, P., Drijard, D., Dudarev, A., Duma, M., Dumitriu, D., Fluerasu, D., Gorin, A., Gorchakov, O., Gritsay, K., Guaraldo, C., Gugiu, M., Hansroul, M., Hons, Z., Horikawa, S., Iwashita, Y., Karpukhin, V., Kluson, J., Kobayashi, M., Kruglov, V., Kruglova, L., Kulikov, A., Kulish, E., Kuptsov, A., Lamberto, A., Lanaro, A., Lednicky, R., Mari��as, C., Martincik, J., Nemenov, L., Nikitin, M., Okada, K., Olchevskii, V., Pentia, M., Penzo, A., Plo, M., Ponta, T., Prusa, P., Rappazzo, G., Vidal, A. Romero, Ryazantsev, A., Rykalin, V., Schacher, J., Sidorov, A., Smolik, J., Sugimoto, S., Takeutchi, F., Tauscher, L., Trojek, T., Trusov, S., Urban, T., Vrba, T., Yazkov, V., Yoshimura, Y., Zhabitsky, M., and Zrelov, P.

Subjects
High Energy Physics - Experiment (hep-ex), FOS: Physical sciences, Nuclear Experiment (nucl-ex)
Abstract

The results of a search for hydrogen-like atoms consisting of $��^{\mp}K^{\pm}$ mesons are presented. Evidence for $��K$ atom production by 24 GeV/c protons from CERN PS interacting with a nickel target has been seen in terms of characteristic $��K$ pairs from their breakup in the same target ($178 \pm 49$) and from Coulomb final state interaction ($653 \pm 42$). Using these results the analysis yields a first value for the $��K$ atom lifetime of $��=(2.5_{-1.8}^{+3.0})$ fs and a first model-independent measurement of the S-wave isospin-odd $��K$ scattering length $\left|a_0^-\right|=\frac{1}{3}\left|a_{1/2}-a_{3/2}\right|= \left(0.11_{-0.04}^{+0.09} \right)M_��^{-1}$ ($a_I$ for isospin $I$)., 14 pages, 8 figures

Published
2014
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5. Rubber-clay nanocomposites. The control of nanostructured to steer material properties

Author

Galimberti M., D'Oria F., Giannini L., Lostritto A., Ponta T., Senatore S., Giuliano G., Guerra G., Conzatti L., and Costa G.

Subjects
nanocomposites, morphology, rubber, mechanical properties, complex mixtures
Abstract

Novel nanostructures are presented formed by a smectite clay and ammonium salts in a hydrocarbon polymer and the correlation of said nanostructures with the properties of composite material is discussed. Clay intercalates with organic mono-layers and bi-layers were prepared by mixing the clay and various ammonium salts in poly-1,4-cis-isoprene, either synthetic or naturally occurring. Experimental evidences are reported, based on X-ray diffractions and transmission electron microscopy. The formation of the two different kinds of clay intercalates was found to be dependent on the substituents of the ammonium salts and on the polar substances present in the rubber used as the reaction medium and is interpreted as driven by the need of achieving an inter-layer density high enough for a stable crystalline structure. Both kinds of clay intercalates were found to be thermally stable, maintaining their intra-layer crystalline order up to 250°C. A delamination process for said nanostructures was observed, upon thermomechanical mixing: complete separation between clay-layers can be thus achieved not only by the well-known intercalation-exfoliation mechanism. Rheological properties of composite materials were investigated through strain sweep, frequency sweep and stress relaxation tests and dynamic mechanical properties of cured compounds is discussed as well.

Published
2008

6. Studies of the K¯N interaction at DAΦNE

Author

Vázquez Doce, O., Bazzi, M., Berucci, C., Bombelli, Luca, Bragadireanu, A. M., Cargnelli, M., Clozza, A., Curceanu, C., D’Uffizi, A., Fiorini, CARLO ETTORE, Ghio, F., Guaraldo, C., Iliescu, M., Ishiwatari, T., Levi Sandri, P., Longoni, ANTONIO FRANCESCO, Marton, J., Okada, S., Pietreanu, D., Piscicchia, K., Poli Lener, M., Ponta, T., Rizzo, A., Romero Vidal, A., Sbardella, E., Scordo, A., Shi, H., Sirghi, D. L., Sirghi, F., Tatsuno, H., Widmann, E., and Zmeskal, J.

Subjects
sezele
Published
2012

7. Determination of $\pi\pi$ scattering lengths from measurement of $\pi^+\pi^-$ atom lifetime

Author

Adeva, B., Afanasyev, L., Benayoun, M., Benelli, A., Berka, Z., Brekhovskikh, V., Caragheorgheopol, G., Cechak, T., Chiba, M., Chliapnikov, P. V., Ciocarlan, C., Constantinescu, S., Costantini, S., Curceanu, C., Doskarova, P., Dreossi, D., Drijard, D., Dudarev, A., Ferro-Luzzi, M., Pazos, J. L. Fungueiriño, Torreira, M. Gallas, Gerndt, J., Gianotti, P., Goldin, D., Gomez, F., Gorin, A., Gorchakov, O., Guaraldo, C., Gugiu, M., Hansroul, M., Hons, Z., Hosek, R., Iliescu, M., Karpukhin, V., Kluson, J., Kobayashi, M., Kokkas, P., Komarov, V., Kruglov, V., Kruglova, L., Kulikov, A., Kuptsov, A., Kuroda, K. I., Lamberto, A., Lanaro, A., Lapshin, V., Lednicky, R., Leruste, P., Sandri, P. Levi, Aguera, A. Lopez, Lucherini, V., Maki, T., Manuilov, I., Marin, J., Narjoux, J. L., Nemenov, L., Nikitin, M., Pardo, T. Nunez, Okada, K., Olchevskii, V., Pazos, A., Pentia, M., Penzo, A., Perreau, J. M., Plo, M., Ponta, T., Rappazzo, G. F., Riazantsev, A., Rodriguez, J. M., Fernandez, A. Rodriguez, Vidal, A. Romero, Ronjin, V. M., Rykalin, V., Saborido, J., Santamarina, C., Schacher, J., Schuetz, C., Sidorov, A., Smolik, J., Takeutchi, F., Tarasov, A., Tauscher, L., Tobar, M. J., Trojek, T., Trusov, S., Utkin, V., Doce, O. Vázquez, Vlachos, S., Voskresenskaya, O., Vrba, T., Willmott, C., Yazkov, V., Yoshimura, Y., Zhabitsky, M., and Zrelov, P.

Subjects
High Energy Physics - Phenomenology, High Energy Physics::Experiment, Particle Physics - Experiment, High Energy Physics - Experiment
Abstract

The DIRAC experiment at CERN has achieved a sizeable production of $\pi^+\pi^-$ atoms and has significantly improved the precision on its lifetime determination. From a sample of 21227 atomic pairs, a 4% measurement of the S-wave $\pi\pi$ scattering length difference $|a_0-a_2| = (.0.2533^{+0.0080}_{-0.0078}|_\mathrm{stat}.{}^{+0.0078}_{-0.0073}|_\mathrm{syst})M_{\pi^+}^{-1}$ has been attained, providing an important test of Chiral Perturbation Theory., Comment: 6 pages, 6 figures

Published
2011

8. Precision spectroscopy of light kaonic atom X-rays in the SIDDHARTA experiment

Author

Cargnelli, M., Bazzi, M., Beer, G., Bombelli, Luca, Bragadireanu, A. M., Curceanu, C., Fiorini, CARLO ETTORE, Frizzi, Tommaso, Ghio, F., Girolami, B., Guaraldo, C., Hayano, R., Iliescu, M., Ishiwatari, T., Iwasaki, M., Kienle, P., Lechner, P., Levi Sandri, P., Longoni, ANTONIO FRANCESCO, Lucherini, V., Marton, J., Okada, S., Pietreanu, D., Ponta, T., Romero Vidal, A., Scordo, A., Shi, H. X., Sirghi, D. L., Sirghi, F., Soltau, H., Strüder, L., Tatsuno, H., Vazquez Doce, O., Widmann, E., and Zmeskal, J.

Subjects
sezele
Published
2011

9. Determination of pi pi scattering lengths from measurement of pi(+)pi(-) atom lifetime

Author

Adeva, B., Afanasyev, L., Benayoun, M., Benelli, A., Berka, Z., Brekhovskikh, V., Caragheorgheopol, G., Cechak, T., Chiba, M., Chliapnikov, P. V., Ciocarlan, C., Constantinescu, S., Costantini, S., Curceanu, C., Doskarova, P., Dreossi, D., Drijard, D., Dudarev, A., Ferro-Luzzi, M., Pazos, J. L. F., Torreira, M. G., Gerndt, J., Gianotti, P., Goldin, D., Gomez, F., Gorin, A., Gorchakov, O., Guaraldo, C., Gugiu, M., Hansroul, M., Hons, Z., Hosek, R., Iliescu, M., Karpukhin, V., Kluson, J., Kobayashi, M., Kokkas, P., Komarov, V., Kruglov, V., Kruglova, L., Kulikov, A., Kuptsov, A., Kuroda, K. I., Lamberto, A., Lanaro, A., Lapshin, V., Lednicky, R., Leruste, P., Sandri, P. L., Aguera, A. L., Lucherini, V., Maki, T., Manuilov, I., Marin, J., Narjoux, J. L., Nemenov, L., Nikitin, M., Pardo, T. N., Okada, K., Olchevskii, V., Pazos, A., Pentia, M., Penzo, A., Perreau, J. M., Plo, M., Ponta, T., Rappazzo, G. F., Riazantsev, A., Rodriguez, J. M., Fernandez, A. R., Vidal, A. R., Ronjin, V. M., Rykalin, V., Saborido, J., Santamarina, C., Schacher, J., Schuetz, C., Sidorov, A., Smolik, J., Takeutchi, F., Tarasov, A., Tauscher, L., Tobar, M. J., Trojek, T., Trusov, S., Utkin, V., Doce, O. V., Vlachos, S., Voskresenskaya, O., Vrba, T., Willmott, C., Yazkov, V., Yoshimura, Y., Zhabitsky, M., and Zrelov, P.

Subjects
pion scattering, probability, pionium, elementary atom, dirac experiment, pionium atom, cross-sections, qcd, target
Abstract

The DIRAC experiment at CERN has achieved a sizeable production of pi(+)pi(-) atoms and has significantly improved the precision on its lifetime determination. From a sample of 21 227 atomic pairs, a 4% measurement of the S-wave pi pi scattering length difference |a(0) - a(2)| = (0.2533(-0.0078)(+0.0080)|stat(-0.0073)(+0.0078)|syst)M(pi+)(-1) has been attained, providing an important test of Chiral Perturbation Theory. (C) 2011 Elsevier B.V. All rights reserved. Physics Letters B

Published
2011

10. Determination of $����$ scattering lengths from measurement of $��^+��^-$ atom lifetime

Author

Adeva, B., Afanasyev, L., Benayoun, M., Benelli, A., Berka, Z., Brekhovskikh, V., Caragheorgheopol, G., Cechak, T., Chiba, M., Chliapnikov, P. V., Ciocarlan, C., Constantinescu, S., Costantini, S., Curceanu, C., Doskarova, P., Dreossi, D., Drijard, D., Dudarev, A., Ferro-Luzzi, M., Pazos, J. L. Fungueiri��o, Torreira, M. Gallas, Gerndt, J., Gianotti, P., Goldin, D., Gomez, F., Gorin, A., Gorchakov, O., Guaraldo, C., Gugiu, M., Hansroul, M., Hons, Z., Hosek, R., Iliescu, M., Karpukhin, V., Kluson, J., Kobayashi, M., Kokkas, P., Komarov, V., Kruglov, V., Kruglova, L., Kulikov, A., Kuptsov, A., Kuroda, K. I., Lamberto, A., Lanaro, A., Lapshin, V., Lednicky, R., Leruste, P., Sandri, P. Levi, Aguera, A. Lopez, Lucherini, V., Maki, T., Manuilov, I., Marin, J., Narjoux, J. L., Nemenov, L., Nikitin, M., Pardo, T. Nunez, Okada, K., Olchevskii, V., Pazos, A., Pentia, M., Penzo, A., Perreau, J. M., Plo, M., Ponta, T., Rappazzo, G. F., Riazantsev, A., Rodriguez, J. M., Fernandez, A. Rodriguez, Vidal, A. Romero, Ronjin, V. M., Rykalin, V., Saborido, J., Santamarina, C., Schacher, J., Schuetz, C., Sidorov, A., Smolik, J., Takeutchi, F., Tarasov, A., Tauscher, L., Tobar, M. J., Trojek, T., Trusov, S., Utkin, V., Doce, O. V��zquez, Vlachos, S., Voskresenskaya, O., Vrba, T., Willmott, C., Yazkov, V., Yoshimura, Y., Zhabitsky, M., and Zrelov, P.

Subjects
High Energy Physics - Experiment (hep-ex), High Energy Physics - Phenomenology (hep-ph), FOS: Physical sciences, High Energy Physics::Experiment
Abstract

The DIRAC experiment at CERN has achieved a sizeable production of $��^+��^-$ atoms and has significantly improved the precision on its lifetime determination. From a sample of 21227 atomic pairs, a 4% measurement of the S-wave $����$ scattering length difference $|a_0-a_2| = (.0.2533^{+0.0080}_{-0.0078}|_\mathrm{stat}.{}^{+0.0078}_{-0.0073}|_\mathrm{syst})M_{��^+}^{-1}$ has been attained, providing an important test of Chiral Perturbation Theory., 6 pages, 6 figures

Published
2011
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11. First measurement of kaonic helium-3 X-rays

Author

SIDDHARTA Collaboration, Bazzi, M., Beer, G., Bombelli, L., Bragadireanu, A. M., Cargnelli, M., Corradi, G., Curceanu, C., d'Uffzi, A., Fiorini, C., Frizzi, T., Ghio, F., Girolami, B., Guaraldo, C., Hayano, R. S., Iliescu, M., Ishiwatari, T., Iwasaki, M., Kienle, P., Sandri, P. Levi, Longoni, A., Marton, J., Okada, S., Pietreanu, D., Ponta, T., Rizzo, A., Vidal, A. Romero, Scordo, A., Shi, H., Sirghi, D. L., Sirghi, F., Tatsuno, H., Tudorache, A., Tudorache, V., Doce, O. Vazquez, Widmann, E., Wuenschek, B., and Zmeskal, J.

Subjects
Nuclear and High Energy Physics, Meson, Silicon, Kaonic hydrogen, Physics::Instrumentation and Detectors, Strong interaction, Nuclear Theory, chemistry.chemical_element, FOS: Physical sciences, 01 natural sciences, Article, law.invention, Nuclear physics, Silicon drift detectors, law, Helium-3, 0103 physical sciences, Atom, Physics::Atomic Physics, Nuclear Experiment (nucl-ex), 010306 general physics, Collider, Nuclear Experiment, Exotic atom, Physics, sezele, 010308 nuclear & particles physics, Kaonic helium, chemistry, Exotic atoms, High Energy Physics::Experiment, Atomic physics
Abstract

The first observation of the kaonic 3He 3d - 2p transition was made using slow K- mesons stopped in a gaseous 3He target. The kaonic atom X-rays were detected with large-area silicon drift detectors using the timing information of the K+K- pairs of phi-meson decays produced by the DAFNE e+e- collider. The strong interaction shift of the kaonic 3He 2p state was determined to be -2+-2 (stat)+-4 (syst) eV., Comment: Accepted for publication in Phys. Lett. B

Published
2010
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12. Kaonic helium X-ray measurement in SIDDHARTA

Author

Bazzi, M., Beer, G., Bombelli, Luca, Bragadireanu, A. M., Cargnelli, M., Corradi, G., Curceanu, C., D'Uffizi, A., Fiorini, CARLO ETTORE, Frizzi, Tommaso, Ghio, F., Girolami, B., Guaraldo, C., Hayano, R. S., Iliescu, M., Ishiwatari, T., Iwasaki, M., Kienle, P., Levi Sandri, P., Longoni, ANTONIO FRANCESCO, Lucherini, V., Marton, J., Okada, S., Pietreanu, D., Ponta, T., Rizzo, A., Romero Vidal, A., Scordo, A., Shi, H., Sirghi, D. L., Sirghi, F., Tatsuno, H., Tudorache, A., Tudorache, V., Vazquez Doce, O., Widmann, E., and Zmeskal, J.

Subjects
sezele
Published
2009

13. On the new limits of a Pauli Exclusion Principle violation by electrons

Author

Bartalucci, S., Bertolucci, S., Bragadireanu, M., Curceanu, C., Di Matteo, Sergio, Egger, J.P., Guaraldo, C., Laubenstein, M., Milotti, E., Ponta, T., Sirghi, D.L., Sirghi, F., Sperandio, L., Widmann, E., Zmeskal, Johann, Surfaces et interfaces, Institut de Physique de Rennes (IPR), Université de Rennes 1 (UR1), Université de Rennes (UNIV-RENNES)-Université de Rennes (UNIV-RENNES)-Centre National de la Recherche Scientifique (CNRS)-Université de Rennes 1 (UR1), Université de Rennes (UNIV-RENNES)-Université de Rennes (UNIV-RENNES)-Centre National de la Recherche Scientifique (CNRS), Horia Hulubei National Institute of Physics and Nuclear Engineering (NIPNE), IFIN-HH, Institut für Mittelenergiephysik (IMEP), Austrian Academy of Sciences (OeAW), Destouches, Dorothée, and Université de Rennes (UR)-Centre National de la Recherche Scientifique (CNRS)-Université de Rennes (UR)-Centre National de la Recherche Scientifique (CNRS)

Subjects
ComputingMilieux_MISCELLANEOUS
Abstract

International audience

Published
2008

15. The DEAR experiment—first results on kaonic hydrogen

Author

Zmeskal, J., Beer, G., Bragadireanu, A. M., Cargnelli, M., Curceanu (Petrascu), C., Egger, J.-P., Fuhrmann, H., Guaraldo, C., Iliescu, M., Ishiwatari, T., Itahashi, K., Iwasaki, M., Kienle, P., Lauss, B., Lucherini, V., Ludhova, Livia, Marton, J., Mulhauser, Françoise, Ponta, T., Schaller, Lukas A., Seki, R., Sirghi, D.L., and Sirghi, F.

Abstract

The goal of the DEAR (DAΦNE exotic atom research) experiment is the precise determination of the isospin dependent antikaon–nucleon scattering lengths. The experiment accurately measures the Kα line shift and broadening, due to the strong interaction, in kaonic hydrogen and, for the first time, in kaonic deuterium. A precision measurement of kaonic hydrogen tests chiral symmetry breaking in systems with strangeness. An initial analysis of the DEAR experiment yields a shift ε1s=−195±45 eV and a width Γ1s=250±125 eV, which is more precise than the previous kaonic X-ray experiment KpX at KEK, and allows for the first time to disentangle the full pattern of the kaonic hydrogen K-series line Kα, Kβ and Kγ.

Published
2005

16. Lambda hyperons produced in central nucleus-nucleus interactions at 4.5 GeV/c momentum per incident nucleon

Author

Anikina, M.Kh., Gazdzicki, Marek, Golokhvastov, A., Goncharov, L., Iovchev, K., Khorozov, S., Kuznetzova, E., Lukstins, J., Okonov, E., Ostanievich, T., Sidorin, S., Vardenga, G., Balea, O., Nikirovich, N., Ponta, T., Chkhaidze, L., Dzobava, T., Despotashvili, M., Tuliani, I., Khusaimov, E., Nurgozin, N., Suleimenov, B., Skrzypczak, E., and Tymieniecka, T.

Subjects
Nuclear Theory, High Energy Physics::Experiment, ddc:530, Nuclear Experiment
Abstract

Transverse momenta and rapidities of Lambda 's produced in central nucleus-nucleus collisions at 4.5 GeV/c·u (C-C,...,O-Pb) were studied and compared with those from inelastic He-Li interactions at the same incident momentum. Polarization of the Lambda hyperons was found to be consistent with zero ( alpha P=-0.06=0.11 for Lambda 's from central collisions). An upper limit of the Lambda -bar / Lambda production ratio was estimated to be less than 4.5 x 10-3. The experiment was performed in a triggered streamer chamber.

Published
2005

17. First measurement of the $\pi^+\pi^-$ atom lifetime

Author

Adeva, B., Afanasyev, L., Benayoun, M., Benelli, A., Berka, Z., Brekhovskikh, V., Caragheorgheopol, G., Cechak, T., Chiba, M., Constantinescu, S., Detraz, C., Dreossi, D., Drijard, D., Dudarev, A., Evangelou, I., Ferro-Luzzi, M., Gallas, M.V., Gerndt, J., Giacomich, R., Gianotti, P., Goldin, D., Gómez, F., Gorin, A., Gorchakov, O., Guaraldo, C., Hansroul, M., Hosek, R., Iliescu, M., Karpukhin, V., Kluson, J., Kobayashi, M., Kokkas, P., Komarov, V., Kruglov, V., Kruglova, L., Kulikov, A., Kuptsov, A., Kurochkin, I., Kuroda, K.-I., Lamberto, A., Lanaro, A., Lapshin, V., Lednicky, R., Leruste, P., Levi Sandri, P., Lopez Aguera, A., Lucherini, V., Maki, T., Manthos, N., Manuilov, I., Montanet, L., Narjoux, J.-L., Nemenov, L., Nikitin, M., Núñez Pardo, T., Okada, K., Olchevskii, V., Pazos, A., Pentia, M., Penzo, A., Perreau, J.-M., Petrascu, C., Pló, M., Ponta, T., Pop, D., Rappazzo, G.F., Rodriguez Fernandez, A., Romero, A., Ryazantsev, A., Rykalin, V., Santamarina, C., Saborido, J., Schacher, J., Schuetz, Ch.P., Sidorov, A., Smolik, J., Takeutchi, F., Tarasov, A., Tauscher, L., Tobar, M.J., Trusov, S., Utkin, V., Vázquez Doce, O., Vázquez, P., Vlachos, S., Yazkov, V., Yoshimura, Y., Zhabitsky, M., Zrelov, P., Laboratoire de Physique Nucléaire et de Hautes Énergies (LPNHE), Université Pierre et Marie Curie - Paris 6 (UPMC)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université Paris Diderot - Paris 7 (UPD7)-Centre National de la Recherche Scientifique (CNRS), Horia Hulubei National Institute of Physics and Nuclear Engineering (NIPNE), IFIN-HH, European Organization for Nuclear Research (CERN), Istituto Nazionale di Fisica Nucleare, Sezione di Trieste (INFN, Sezione di Trieste), Istituto Nazionale di Fisica Nucleare (INFN), Laboratori Nazionali di Frascati (LNF), and DIRAC

Subjects
pi(-) mesons, formalism, DIRAC experiment, scattering, Pion scattering, pionium, excitation, elementary atom, pionium atom, matter, High Energy Physics - Experiment, pion scattering, Elementary atom, [PHYS.HEXP]Physics [physics]/High Energy Physics - Experiment [hep-ex], Pionium atom, spectrometer, 36.10.-k, 32.70.Cs, 25.80.E, 25.80.Gn, 29.30.Aj, dirac experiment, cross-sections, relativistic elementary atoms, energy
Abstract

The goal of the DIRAC experiment at CERN (PS212) is to measure the $\pi^+\pi^-$ atom lifetime with 10% precision. Such a measurement would yield a precision of 5% on the value of the $S$-wave $\pi\pi$ scattering lengths combination $|a_0-a_2|$. Based on part of the collected data we present a first result on the lifetime, $\tau=[2.91 ^{+0.49}_{-0.62}]\times 10^{-15}$ s, and discuss the major systematic errors. This lifetime corresponds to $|a_0-a_2|=0.264 ^{+0.033}_{-0.020} m_{\pi}^{-1}$., Comment: 18 pages, 6 figures

Published
2005
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18. The VIP Experiment

Author

Bartalucci, S., Bertolucci, S., Bragadireanu, M., Bucci, C., Cargnelli, M., Catitti, M., Curceanu, C., Di Matteo, S., Egger, J. -P., Ferrari, N., Fuhrmann, H., Guaraldo, C., Iliescu, M., Ishiwatari, T., Laubenstein, M., Marton, J., Milotti, E., Pietreanu, D., Ponta, T., Sirghi, D., Sirghi, F., Sperandio, L., Widmann, E., and Zmeskal, J.

Subjects
FOS: Physical sciences, Quantum Physics (quant-ph)
Abstract

The Pauli Exclusion Principle (PEP) is a basic principle of Quantum Mechanics, and its validity has never been seriously challenged. However, given its importance, it is very important to check it as thoroughly as possible. Here we describe the VIP (Violation of PEP) experiment, an improved version of the Ramberg and Snow experiment (Ramberg and Snow, Phys. Lett. B238 (1990) 438); VIP shall be performed at the Gran Sasso underground laboratories, and aims to test the Pauli Exclusion Principle for electrons with unprecedented accuracy, down to $\frac{��^2}{2} \sim 10^{-30}$, 7 pages, 5 figures, PDF only, presented by Edoardo Milotti to the conference "Quantum Theory: reconsideration of foundations-3", Vaxjo (Sweden), June, 6-11 2005

Published
2005
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19. Detection of pi(+)pi(-) atoms with the DIRAC spectrometer at CERN

Author

Adeva, B., Afanasyev, L., Benayoun, M., Benelli, A., Berka, Z., Brekhovskikh, V., Caragheorgheopol, G., Cechak, T., Chiba, M., Constantinescu, S., Costantini, S., Detraz, C., Dreossi, D., Drijard, D., Dudarev, A., Evangelou, I., Ferro-Luzzi, M., Gallas, M. V., Gerndt, J., Giacomich, R., Gianotti, P., Goldin, D., Gomez, F., Gorin, A., Gorchakov, O., Guaraldo, C., Hansroul, M., Hosek, R., Iliescu, M., Kalinina, N., Karpukhin, V., Kluson, J., Kobayashi, M., Kokkas, P., Komarov, V., Kruglov, V., Kruglova, L., Kulikov, A., Kuptsov, A., Kurochkin, I., Kuroda, K. I., Lamberto, A., Lanaro, A., Lapshin, V., Lednicky, R., Leruste, P., Sandri, P. L., Aguera, A. L., Lucherini, V., Maki, T., Manthos, N., Manuilov, I., Montanet, L., Narjoux, J. L., Nemenov, L., Nikitin, J., Pardo, T. N., Okada, K., Olchevskii, V., Pazos, A., Pentia, M., Penzo, A., Perreau, J. M., Petrascu, C., Plo, M., Ponta, T., Pop, D., Rappazzoo, G. F., Fernandez, A. R., Romero, A., Ryazantsev, A., Rykalin, V., Santamarina, C., Saborido, J., Schacher, J., Schuetz, C. P., Sidorov, A., Smolik, J., Takeutchi, F., Tarasov, A., Tauscher, L., Tobar, M. J., Trusov, S., Utkin, V., Doce, O. V., Vazquez, P., Vlachos, S., Yazkov, V., Yoshimura, Y., Zhabitsky, M., and Zrelov, P.

Subjects
state, pi(-) mesons, level trigger, scattering, high-energy, breakup, matter
Abstract

The goal of the DIRAC experiment at CERN is to measure with high precision the lifetime of the pi(+)pi(-) atom (A(2pi)), which is of order 3 x 10(-15) s, and thus to determine the s-wave pipi-scattering lengths difference \a(0) - a(2)\. A(2pi) atoms are detected through the characteristic features of pi(+)pi(-) pairs from the atom break-up (ionization) in the target. We report on a first high statistics atomic data sample obtained from p-Ni interactions at 24 GeV/c proton momentum and present the methods to separate the signal from the background. Journal of Physics G-Nuclear and Particle Physics

Published
2004

20. First observation of $\pi$K atom and its lifetime measurement

Author

Adeva, B, Afanasiev, L G, Berka, Z, Brekhovskikh, V, Caragheorgheopol, G, Cechák, T, Chiba, M, Costantini, S, Constantinescu, S, Détraz, C, Doudarev, A, Drijard, Daniel, Evangelou, I, Ferro-Luzzi, M, Gallas-Torreira, M V, Gerndt, J, Giacomich, R, Gianotti, P, Giardoni, M, Goldin, D, Gómez, F, Gorin, A, Gortchakov, O E, Guaraldo, C, Hansroul, M, Hosek, R, Iliescu, M A, Jabitski, M, Kalinina, N A, Karpoukhine, V, Kluson, J, Kobayashi, M, Kokkas, P, Komarov, V, Koulikov, A, Kouptsov, A, Krouglov, V, Krouglova, L, Kuroda, K I, Lamberto, A, Lanaro, A, Lapshin, V G, Lednicky, R, Levi-Sandri, P, López-Aguera, A, Lucherini, V, Mäki, T, Manuilov, I V, Manthos, N, Medinsky, M, Montanet, Lucien, Nemenov, L L, Nikitin, M, Okada, K, Olchevskii, V, Pentia, M, Penzo, Aldo L, Petrascu, C, Pló, M, Pop, D, Pustylnik, Z P, Rappazzo, G F, Riazantsev, A, Rodríguez, X M, Rodríguez-Fernández, A M, Rykalin, V I, Santamarina-Rios, C, Saborido, J, Schacher, J, Schütz, C, Sidorov, A, Smolik, J, Takeutchi, F, Tarasov, A, Tauscher, Ludwig, Tobar, M J, Triantis, F A, Trousov, S, Vlachos, S, Yazkov, V V, Yoshimura, Y, Zrelov, V P, and Ponta, T

Subjects
Detectors and Experimental Techniques
Published
2000

21. A measurement of the transverse polarization of $\Lambda$-hyperons produced in n C-reactions in the EXCHARM experiment

Author

Aleev, A N, Balandin, V P, Dvalishvili, E A, Gaponenko, A N, Gusev, A V, Khristov, P Z, Ivanchenko, I M, Kapishin, M N, Karpenko, N N, Kekelidze, V D, Khristova, T V, Kojenkova, Z I, Kosarev, I G, Kretov, Yu A, Kurilin, A S, Kuzmin, N A, Lyubimov, A L, Madigozhin, D T, Mestvirishvili, A S, Molokanova, N A, Morozov, A N, Potrebenikov, Yu K, Skripnichuk, A G, Slepets, L A, Spaskov, V N, Tatishvili, G T, Tkachev, A L, Yudin, I P, Zinchenko, A I, Bugorsky, A P, Loktionov, A A, Ponta, T, Preda, T, Geshkov, I M, Abesalashvili, L N, Amaglobeli, N S, Chiladze, B G, Kvatadze, R A, Kopadze, M V, Lomidze, N L, Nikobadze, G I, Pitskhelauri, T G, Grigalashvili, T S, Emeljanchik, I F, Raspereza, A V, Sushkov, S V, and Ivanchenko, Z M

Subjects
Particle Physics - Experiment
Published
1999

22. Spin alignment of $K^{*}(892)^{\pm}$ mesons produced in neutron-carbon interactions

Author

Aleev, A N, Balandin, V P, Gaponenko, A N, Khristov, P Z, Ivanchenko, I M, Kapishin, M N, Karpenko, N N, Kekelidze, V D, Khristova, T V, Kojenkova, Z I, Kosarev, I G, Kretov, Yu A, Kurilin, A S, Kuzmin, N A, Lyubimov, A L, Madigozhin, D T, Mestvirishvili, A S, Molokanova, N A, Morozov, A N, Potrebenikov, Yu K, Skripnichuk, A G, Slepets, L A, Spaskov, V N, Tatishvili, G T, Tkachev, A L, Zinchenko, A I, Cheshkov, C V, Lavrentyev, A A, Panacik, A A, Bugorsky, A P, Loktionov, A A, Ponta, T, Preda, T, Geshkov, I M, Amaglobeli, N S, Kopadze, M V, Kvatadze, R A, Lomidze, N L, Grigalashvili, T S, and Ivanchenko, Z M

Subjects
Particle Physics - Experiment
Published
1999

23. Lifetime measurement of $\pi^{+}\pi^{-}$ atoms to test low energy QCD predictions

Author

Adeva, B, Afanasiev, L G, Angeles-Lopez, M, Benayoun, M, Chvyrov, A, Ciortea, C, Dumitriu, D, Gianotti, P, Gomes, F, Gorshakov, O, Groza, L, Guaraldo, C, Kalinina, N, Karpukhin, V, Kobayashi, M, Komarov, V, Kruglov, V, Kruglova, L, Kulikov, A, Kuptsov, A, Kuroda, K, Lanaro, A, Le Bornec, Y, Leruste, Ph, Lucherini, V, Maki, T, Micu, L, Montanet, L, Mozzetti, R, Narjoux, J, Nemenov, L, Nichitiu, F, Nikitin, M, Nupieri, M, Okada, K, Okusawa, T, Olshevsky, V, Pazos, A, Pentia, M, Petrascu, M, Petrascu, C, Piticu, I, Plo, M, Ponta, T, Pustylnik, Zh, Rjabkov, D, Rosca, A, Schacher, J, Scheglov, Yu, Selikov, A, Szilagyi, Z, Takeutchi, F, Tarasov, A, Tatischeff, B, Trusov, S, Willis, N, Yazkov, V, Yonnet, J, Yoshida, T, Zghiche, A, Zoran, V, and Zrelov, P

Subjects
Detectors and Experimental Techniques
Published
1994

24. First measurement of the π+π− atom lifetime

Author

Adeva, B., Afanasyev, L., Benayoun, M., Benelli, A., Berka, Z., Brekhovskikh, V., Caragheorgheopol, G., Cechak, T., Chiba, M., Constantinescu, S., Detraz, C., Dreossi, D., Drijard, D., Dudarev, A., Evangelou, I., Ferro-Luzzi, M., Gallas, M.V., Gerndt, J., Giacomich, R., Gianotti, P., Goldin, D., Gómez, F., Gorin, A., Gorchakov, O., Guaraldo, C., Hansroul, M., Hosek, R., Iliescu, M., Karpukhin, V., Kluson, J., Kobayashi, M., Kokkas, P., Komarov, V., Kruglov, V., Kruglova, L., Kulikov, A., Kuptsov, A., Kurochkin, I., Kuroda, K.-I., Lamberto, A., Lanaro, A., Lapshin, V., Lednicky, R., Leruste, P., Levi Sandri, P., Lopez Aguera, A., Lucherini, V., Maki, T., Manthos, N., Manuilov, I., Montanet, L., Narjoux, J.-L., Nemenov, L., Nikitin, M., Núñez Pardo, T., Okada, K., Olchevskii, V., Pazos, A., Pentia, M., Penzo, A., Perreau, J.-M., Petrascu, C., Pló, M., Ponta, T., Pop, D., Rappazzo, G.F., Rodriguez Fernandez, A., Romero, A., Ryazantsev, A., Rykalin, V., Santamarina, C., Saborido, J., Schacher, J., Schuetz, Ch.P., Sidorov, A., Smolik, J., Takeutchi, F., Tarasov, A., Tauscher, L., Tobar, M.J., Trusov, S., Utkin, V., Vázquez Doce, O., Vázquez, P., Vlachos, S., Yazkov, V., Yoshimura, Y., Zhabitsky, M., and Zrelov, P.

Subjects
DIRAC experiment, Elementary atom, Pion scattering, Pionium atom
Abstract

The goal of the DIRAC experiment at CERN (PS212) is to measure the π+π− atom lifetime with 10% precision. Such a measurement would yield a precision of 5% on the value of the S-wave ππ scattering lengths combination |a0−a2|. Based on part of the collected data we present a first result on the lifetime, τ=[2.91−0.62+0.49]×10−15 s, and discuss the major systematic errors. This lifetime corresponds to |a0−a2|=0.264−0.020+0.033mπ−1.

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25. Strong-interaction shifts and widths of kaonic helium isotopes

Author

Ishiwatari, T., Bazzi, M., Beer, G., Bombelli, L., Bragadireanu, A.M., Cargnelli, M., Curceanu (Petrascu), C., dʼUffizi, A., Fiorini, C., Frizzi, T., Ghio, F., Guaraldo, C., Hayano, R.S., Iliescu, M., Iwasaki, M., Kienle, P., Levi Sandri, P., Longoni, A., Marton, J., Okada, S., Pietreanu, D., Ponta, T., Rizzo, A., Romero Vidal, A., Sbardella, E., Scordo, A., Shi, H., Sirghi, D.L., Sirghi, F., Tatsuno, H., Tudorache, A., Tudorache, V., Vazquez Doce, O., Widmann, E., Wünschek, B., and Zmeskal, J.

Subjects
Nuclear and High Energy Physics, sezele, Exotic atoms, Silicon-drift detectors, Strong interaction, Physics::Atomic Physics, Kaonic helium, Article
Abstract

The kaonic 3He and 4He 3d→2p transitions in gaseous targets were observed by the SIDDHARTA experiment. The X-ray energies of these transitions were measured with large-area silicon-drift detectors using the timing information of the K+K− pairs produced by the DAΦNE e+e− collider. The strong-interaction shifts and widths both of the kaonic 3He and 4He 2p states were determined, which are much smaller than the results obtained by the previous experiments. The “kaonic helium puzzle” (a discrepancy between theory and experiment) was now resolved.

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26. Determination of ππ scattering lengths from measurement of π+π− atom lifetime

Author

Adeva, B., Afanasyev, L., Benayoun, M., Benelli, A., Berka, Z., Brekhovskikh, V., Caragheorgheopol, G., Cechak, T., Chiba, M., Chliapnikov, P.V., Ciocarlan, C., Constantinescu, S., Costantini, S., Curceanu (Petrascu), C., Doskarova, P., Dreossi, D., Drijard, D., Dudarev, A., Ferro-Luzzi, M., Fungueiriño Pazos, J.L., Gallas Torreira, M., Gerndt, J., Gianotti, P., Goldin, D., Gomez, F., Gorin, A., Gorchakov, O., Guaraldo, C., Gugiu, M., Hansroul, M., Hons, Z., Hosek, R., Iliescu, M., Karpukhin, V., Kluson, J., Kobayashi, M., Kokkas, P., Komarov, V., Kruglov, V., Kruglova, L., Kulikov, A., Kuptsov, A., Kuroda, K.I., Lamberto, A., Lanaro, A., Lapshin, V., Lednicky, R., Leruste, P., Levi Sandri, P., Lopez Aguera, A., Lucherini, V., Maki, T., Manuilov, I., Marin, J., Narjoux, J.L., Nemenov, L., Nikitin, M., Nunez Pardo, T., Okada, K., Olchevskii, V., Pazos, A., Pentia, M., Penzo, A., Perreau, J.M., Plo, M., Ponta, T., Rappazzo, G.F., Riazantsev, A., Rodriguez, J.M., Rodriguez Fernandez, A., Romero Vidal, A., Ronjin, V.M., Rykalin, V., Saborido, J., Santamarina, C., Schacher, J., Schuetz, C., Sidorov, A., Smolik, J., Takeutchi, F., Tarasov, A., Tauscher, L., Tobar, M.J., Trojek, T., Trusov, S., Utkin, V., Vázquez Doce, O., Vlachos, S., Voskresenskaya, O., Vrba, T., Willmott, C., Yazkov, V., Yoshimura, Y., Zhabitsky, M., and Zrelov, P.

Subjects
DIRAC experiment, Elementary atom, Pion scattering, Pionium atom
Abstract

The DIRAC experiment at CERN has achieved a sizeable production of π+π− atoms and has significantly improved the precision on its lifetime determination. From a sample of 21 227 atomic pairs, a 4% measurement of the S-wave ππ scattering length difference |a0−a2|=(0.2533−0.0078+0.0080|stat|syst−0.0073+0.0078)Mπ+−1 has been attained, providing an important test of Chiral Perturbation Theory.

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27. Kaonic hydrogen - Status of the DEAR experiment

Author

Cargnelli, M., Beer, G., Bragadireanu, A. M., Curceanu, C., Egger, J. P., Fuhrmann, H., Giersch, M., Guaraldo, C., Mihail Antoniu Iliescu, Ishiwatari, T., Itahashi, K., Iwasaki, M., Kienle, P., Lauss, B., Lucherini, V., Ludhova, L., Marton, J., Mulhauser, F., Ponta, T., Schaller, L. A., Sirghi, D. L., Sirghi, F., Zmeskal, J., and Dear Collaboration

28. VIP EXPERIMENT: NEW EXPERIMENTAL LIMIT ON PAULI EXCLUSION PRINCIPLE VIOLATION BY ELECTRONS

Author

Pietreanu, D., Bartalucci, S., Bertolucci, S., Bragadireanu, M., Cargnelli, M., Catitti, M., Curceanu, C., Di Matteo, S., Egger, J. P., Guaraldo, C., Mihail Antoniu Iliescu, Ishiwarari, T., Laubenstein, M., Marton, J., Milotti, E., Ponta, T., Sirghi, D. L., Sirghi, F., Sperandio, L., Doce, O. V., Widmann, E., Zmeskal, J., and Collaboration, V. I. P.

29. Kaonic helium (3 and 4) precision X-ray transitions measurements by SIDDHARTA at DAΦNE

Author

Scordo, A., Bazzi, M., Beer, G., Bombelli, L., Bragadireanu, A. M., Cargnelli, M., Clozza, A., Corradi, G., Curceanu Petrascu, C., D Uffizi, A., Fiorini, C., Frizzi, T., Ghio, F., Girolami, B., Guaraldo, C., Hayano, R. S., Iliescu, M., Ishiwatari, T., Iwasaki, M., Kienle, P., Levi Sandri, P., Longoni, A., Marton, J., Okada, S., Pietreanu, D., Pischicchia, K., Ponta, T., Rizzo, A., Romero Vidal, A., Sbardella, E., Shi, H., Sirghi, D. L., Sirghi, F., Tatsuno, H., Tudorache, A., Tudorache, V., Vazquez Doce, O., Widmann, E., Wünschek, B., and Zmeskal Johann

30. Disentangling the K-complex of kaonic hydrogen with DEAR

Author

Petrascu, C., Bianco, S., Bragadireanu, A. M., Fabbri, F. L., Guaraldo, C., Iliescu, M., Ito, T. M., Lucherini, V., Bregant, M., Edoardo Milotti, Vacchi, A., Zavattini, E., Augsburger, M., Chatellard, D., Knowles, P., Mulhauser, F., Schaller, L. A., Schellenberg, L., Schneuwly, H., Egger, J. -P, Varidel, D., Breunlich, W. H., Cargnelli, M., Gartner, B., King, R., Lauss, B., Marton, J., Zmeskal, J., Ponta, T., Nakamura, S. N., Koike, T., Hayano, R. S., Hori, M., Ishikawa, T., Ishiwatari, T., Iwasaki, M., Akaishi, Y., Beer, G., Sanderson, A. C., Seki, R., C., Petrascu, S., Bianco, A. M., Bragadireanu, F. L., Fabbri, C., Guaraldo, M., Iliescu, T. M., Ito, V., Lucherini, M., Bregant, Milotti, Edoardo, A., Vacchi, E., Zavattini, M., Augsburger, D., Chatellard, P., Knowle, F., Mulhauser, L. A., Schaller, L., Schellenberg, H., Schneuwly, J. P., Egger, D., Varidel, W. H., Breunlich, M., Cargnelli, B., Gartner, R., King, B., Lau, J., Marton, J., Zmeskal, T., Ponta, S. N., Nakamura, T., Koike, R. S., Hayano, M., Hori, T., Ishikawa, T., Ishiwatari, M., Iwasaki, Y., Akaishi, G., Beer, A. C., Sanderson, and R., Seki

31. Precision spectroscopy of light kaonic atom X-rays in the SIDDHARTA experiment

Author

Ishiwatari, T., Bazzi, M., Beer, G., Bombelli, L., Bragadireanu, A. M., Cargnelli, M., Corradi, G., Curceanu, C., D Uffizi, A., Fiorini, C., Frizzi, T., Ghio, F., Girolami, B., Guaraldo, C., Hayano, R. S., Iliescu, M., Iwasaki, M., Kienle, P., Sandri, P. Levi, Longoni, A., Lucherini, V., Marton, J., Okada, S., Pietreanu, D., Ponta, T., Rizzo, A., Vidal, A. Romero, Scordo, A., Shi, H., Sirghi, D. L., Sirghi, F., Tatsuno, H., Tudorache, A., Tudorache, V., Doce, O. Vazquez, Widmann, E., Zmeskal, J., Nieves, Jm, Oset, E., and Vacas, Mjv

Subjects
sezele

32. Interference correlations of hyperons in neutron carbon interactions

Author

Aleev, A. N., Balandin, V. P., Evgueni Goudzovski, Gurev, D. K., Zinchenko, A. I., Ivanchenko, Z. M., Ivanchenko, I. M., Kekelidze, V. D., Kozhenkova, Z. I., Kosarev, I. G., Kuzmin, N. A., Lyubimov, A. L., Madigozhin, D. T., Mazny, V. G., Mitsyn, V. V., Molokanova, N. A., Morozov, A. N., Pismenniy, R. E., Polenkevich, I. A., Potrebenikov, Yu K., Slepets, L. A., Spaskov, V. N., Bulekov, O. V., Eremin, S. V., Ponosov, A. K., Sergeev, F. M., Amaglobeli, N. S., Kvatadze, R. A., Kopadze, M. V., Lomidze, N. L., Grigalashvili, T. S., Geshkov, I. M., Khristov, P. Z., Loktionov, A. A., and Ponta, T.

33. Kaonic atoms at DAΦNE

Author

Okada, S., Bazzi, M., Beer, G., Berucci, C., Bombelli, L., Bragadireanu, A. M., Cargnelli, M., Clozza, A., Corradi, G., Curceanu, C., D Uffizi, A., Fiorini, C., Ghio, F., Girolami, B., Guaraldo, C., Hayano, R. S., Mihail Antoniu Iliescu, Ishiwatari, T., Iwasaki, M., Kienle, P., Sandri, P. L., Lucherini, V., Marton, J., Pietreanu, D., Piscicchia, K., Lener, M. P., Ponta, T., Quaglia, R., Rizzo, A., Vidal, A. R., Sbardella, E., Scordo, A., Shi, H., Sirghi, D. L., Sirghi, F., Tatsuno, H., Tudorache, A., Tudorache, V., Doce, O. V., Widmann, E., and Zmeskal, J.

34. Observation of Sigma(c)0 charmed baryon in the experiment EXCHARM

Author

Aleev, A. N., Balandin, V. P., Evsikov, I. I., Zinchenko, A. I., Ivanchenko, Z. M., Ivanchenko, I. M., Kamburian, A. F., Karpenko, N. N., Kvirikashvili, G. A., Kekelidze, V. D., Kozhevnikov, Yu A., Kozhenkova, Z. I., Kosarev, I. G., Kretov, Yu A., Kuzmin, N. A., Lyubimov, A. L., Madigozhin, D. T., Mestvirishvili, A. S., Moisenz, P. V., Morozov, A. N., Odishvili, A. K., Palchik, V. V., Potrebenikov, Yu K., Progulova, T. B., Sashin, V. A., Simonov, V. E., Skripnichuk, A. G., Spaskov, V. N., Tatishvili, G. T., Tkachev, A. L., Chvyrov, A. S., Khristov, P. Z., Yudin, I. P., Yuldashev, O. I., Yuldasheva, M. B., Loktionov, A. A., Bragadireanu, A., Groza, L., Iliescu, M., Ponta, T., Kurilin, A. S., Baranov, S. P., Belov, M. V., Kozlov, V. A., Potashev, S. Yu, Bugorsky, A. P., Zayachky, V. J., Geshkov, I. M., Stefan Piperov, Abesalashvili, L. N., Amaglobeli, N. S., Kvatadze, R. A., Kopadze, M. V., Lomidze, N. L., Nikobadze, G. I., Pitskhelauri, T. G., Chiladze, B. G., and Grigalashvili, T. S.

35. The EXCHARM Spectrometer

Author

Aleev, A. N., Aref Ev, V. A., Balandin, V. P., Birulev, V. K., Vovenko, A. A., Gus Kov, B. N., Evsikov, I. I., Zinchenko, A. I., Ivanchenko, I. M., Ivanchenko, Z. M., Kamburyan, A. F., Kapishin, M. N., Karpenko, N. N., Kvirikashvili, G. A., Kekelidze, V. D., Kirillov, D. A., Kozhevnikov, Yu A., Kozhenkova, Z. I., Koren Kov, V. V., Kosarev, I. G., Kretov, Yu A., Kuz Min, N. A., Likhachev, M. F., Lyubimov, A. L., Madigozhin, D. T., Maksimov, A. N., Sh Mestvirishvili, A., Molokanova, N. A., Morozov, A. N., Moisenz, P. V., Pal Chik, V. V., Petukhov, Yu P., Potrebenikov, Yu K., Preda, T., Sashin, V. A., Skripnichuk, A. G., Slepets, L. A., Spaskov, V. N., Tatishvili, G. T., Tkachev, A. L., Chvyrov, A. S., Khristov, P. Z., Khristova, T. V., Yudin, I. P., Yuldashev, O. I., Yuldasheva, M. B., Loktionov, A. A., Bragadireanu, A., Ponta, T., Baranov, S. P., Belov, M. V., Zavertyaev, M. V., Kozlov, V. A., Yu Potashov, S., Zajachky, V. J., Geshkov, I. M., Abesalashvili, L. N., Amaglobeli, N. S., Kopadze, M. V., Lomidze, N. L., Nikobadze, G. I., Pitskhelauri, T. G., Chiladze, B. G., Grigalashvili, T. S., and Kurilin, A. S.

36. Investigation of phi meson inclusive production by neutrons on the Serpukhov accelerator

Author

Aleev, A. N., Balandin, V. P., Evsikov, I. I., Zaikin, N. S., Zinchenko, A. I., Ivanchenko, Z. M., Ivanchenko, I. M., Kamburian, A. F., Kapishin, M. N., Karpenko, N. N., Kvirikashvili, G. A., Kekelidze, V. D., Kirillov, D. A., Kozhevnikov, Yu A., Kozhenkova, Z. I., Korenkov, V. V., Kosarev, I. G., Kretov, Yu A., Kuzmin, N. A., Lyubimov, A. L., Madigozhin, D. T., Mestvirishvili, A. Sh, Molokanova, N. A., Morozov, A. N., Moisenz, P. V., Palchik, V. V., Potrebenikov, Yu K., Progulova, T. B., Sashin, V. A., Skripnichuk, A. G., Simonov, V. E., Slepets, L. A., Spaskov, V. N., Tatishvili, G. T., Tkachev, A. L., Chvyrov, A. S., Khristov, P. Z., Yudin, I. P., Yuldashev, O. I., Yuldasheva, M. B., Bugorsky, A. P., Loktionov, A. A., Bragadireanu, A., Groza, L., Iliescu, M., Ponta, T., Baranov, S. P., Belov, M. V., Kozlov, V. A., Potashov, S. Yu, Zayachky, V. J., Geshkov, I. M., Stefan Piperov, Abesalashvili, L. N., Amaglobeli, N. S., Kopadze, M. V., Lomidze, N. L., Nikobadze, G. I., Pitskhelauri, T. G., Chiladze, B. G., Grigalashvili, T. S., and Kurilin, A. S.

37. Kaon-nucleon interaction studied by kaonic X rays with DEAR at DA Phi NE

Author

Bianco, S., Bragadireanu, A. M., Fabbri, F. L., Guaraldo, C., Mihail Antoniu Iliescu, Ito, T. M., Lucherini, V., Petrascu, C., Bregant, M., Milotti, E., Vacchi, A., Zavattini, E., Augsburger, M., Chatellard, D., Knowles, P., Mulhauser, F., Schaller, L. A., Schellenberg, L., Schneuwly, H., Egger, J. P., Varidel, D., Breunlich, W. H., Cargnelli, M., Gartner, B., King, R., Lauss, B., Marton, J., Zmeskal, J., Ponta, T., Nakamura, S. N., Koike, T., Hayano, R. S., Hori, M., Ishikawa, T., Ishiwatari, T., Iwasaki, M., Akaishi, Y., Beer, G., Sanderson, A. C., and Seki, R.

38. Detection of atoms consisting of pi(+) and pi(-) mesons at PSCERN

Author

Afanasyev, L., Adeva, B., Benayoun, M., Berka, Z., Brekhovskikh, V., Caragheorgheopol, G., Cechak, T., Chiba, M., Constantini, S., Constantinescu, S., Doudarev, A., Dreossi, D., Drijard, D., Ferro-Luzzi, M., Torreira, Tg, Gerndt, J., Giacomich, R., Gianotti, P., Gomez, F., Gorin, A., Gortchakov, O., Guaraldo, C., Hansroul, M., Hosek, R., Iliescu, M., Jabitski, M., Kalinina, N., Karpukhin, V., Kluson, J., Kobayashi, M., Kokkas, P., Komarov, V., Koulikov, A., Kouptsov, A., Krouglov, V., Krouglova, L., Kuroda, Ki, Lamberto, A., Lanaro, A., Lapshin, V., Richard Lednicky, Leruste, P., Sandri, Pl, Aguera, Al, Lucherini, V., Maki, T., Manuilov, I., Montanet, L., Narjoux, Jl, Nemenov, L., Nikitin, M., Pardo, Tn, Okada, K., Olchevskii, V., Pazos, A., Pentia, M., Penzo, A., Perreau, Jm, Petrascu, C., Plo, M., Ponta, T., Pop, D., Rappazzo, Gf, Riazantsev, A., Rodriguez, Jm, Fernandez, Ar, Rykalin, V., Santamarina, C., Saborido, J., Schacher, J., Schuetz, C., Sidorov, A., Smolik, J., Takeutchi, F., Tarasov, A., Tauscher, L., Tobar, Mj, Trousov, S., Vazquez, P., Vlachos, S., Yazkov, V., Yoshimura, Y., and Zrelov, P.

39. The DEAR experiment on DA Phi NE

Author

Lauss, B., Augsburger, M., Beer, G., Bianco, S., Bragadireanu, A. M., Bregant, M., Breunlich, W. H., Cargnelli, M., Chatellard, D., Egger, J. P., Fabbri, F. L., Gartner, B., Guaraldo, C., Hayano, R. S., Mihail Antoniu Iliescu, Ishiwatari, T., Ito, T. M., Iwasaki, M., King, R., Knowles, P., Koike, T., Lucherini, V., Marton, J., Milotti, E., Mulhauser, F., Nakamura, S. N., Petrascu, C., Ponta, T., Sanderson, A. C., Schaller, L. A., Schellenberg, L., Schneuwly, H., Seki, R., Tomono, D., Yoneyama, T., Zavattini, E., and Zmeskal, J.

40. Test of chiral perturbation theory with DIRAC at CERN

Author

Gianotti, P., Adeva, B., Afanasev, L., Benayoun, Maurice, Brekhovskikh, V., Caragheorgheopol, G., Cechak, T., Chiba, M., Constantinescu, S., Doudarev, A., Dreossi, D., Drijard, D., Ferro-Luzzi, M., Gallas Torreira, M., Gerndt, J., Giacomich, R., Gomez, F., Gorin, A., Gorchakov, O., Guaraldo, C., Hansroul, M., Hosek, R., Iliescu, M., Kalinina, N., Karpukhin, V., Kluson, J., Kobayashi, M., Kokkas, P., Komarov, V., Kulikov, A., Kuptsov, A., Kruglov, V., Kruglova, L., Kuroda, K. I., Lanaro, A., Lapshin, V., Richard Lednicky, Leruste, P., Levi Sandri, P., Lopez Aguera, A., Lucherini, V., Maki, T., Manuilov, I., Montanet, L., Narjoux, J. L., Nemenov, L., Nikitin, M., Nunez Pardo, T., Okada, K., Olchevsky, V., Pazos, A., Pentia, M., Penzo, A., Perreau, J. M., Petrascu, C., Plo, M., Ponta, T., Pop, D., Ryazantsev, A., Rodriguez, J. M., Rodriguez Fernandez, A., Rykalin, V., Santamarina, C., Schacher, J., Sidorov, A., Smolik, J., Takeutchi, F., Tarasov, A., Tauscher, L., Trusov, Sergey V., Vazquez, P., Vlachos, S., Yazkov, V., Yoshimura, Y., and Zrelov, P.

41. DIRAC experiment and test of low-energy QCD

Author

Pentia, M., Adeva, B., Afanasev, L., Benayoun, Maurice, Brekhovskikh, V., Caragheorgheopol, G., Cechak, T., Chiba, M., Constantinescu, S., Doudarev, A., Dreossi, D., Drijard, D., Ferro-Luzzi, M., Gallas Torreira, T., Gerndt, J., Giacomich, R., Gianotti, P., Gomez, F., Gorin, A., Gortchakov, O., Guaraldo, C., Hansroul, M., Hosek, R., Iliescu, M., Kalinina, N., Karpoukhine, V., Kluson, J., Kobayashi, M., Kokkas, P., Komarov, V., Koulikov, A., Kouptsov, A., Krouglov, V., Krouglova, L., Kuroda, K. I., Lanaro, A., Lapshine, V., Richard Lednicky, Leruste, P., Levi Sandri, P., Lopez Aguera, A., Lucherini, V., Maki, T., Manuilov, I., Montanet, L., Narjoux, J. L., Nemenov, L., Nikitin, M., Nunez Pardo, T., Okada, K., Olchevsky, V., Pazos, A., Penti, M., Penzo, A., Perreau, J. M., Petrascu, C., Plo, M., Ponta, T., Pop, D., Riazantsev, A., Rodriguez, J. M., Rodriguez Fernandez, A., Rykaline, V., Santamarina, C., Schacher, J., Sidorov, A., Smolik, J., Takeutchi, F., Tarasov, A., Tauscher, L., Trusov, Sergey V., Vazquez, P., Vlachos, S., Yazkov, V., Yoshimura, Y., and Zrelov, P.

Subjects
Particle Physics - Phenomenology
Abstract

The low-energy QCD predictions to be tested by the DIRAC experiment are revised. The experimental method, the setup characteristics and capabilities, along with first experimental results are reported. Preliminary analysis shows good detector performance: alignment error via $\Lambda$ mass measurement $m_\Lambda = 1115.6 MeV/c^2$ with $\sigma = 0.92 MeV/c^2$, $p \pi^-$ relative momentum resolution $\sigma_Q \approx 2.7 MeV/c$, and evidence for $\pi^+ The low-energy QCD predictions to be tested by the DIRAC experiment are revised. The experimental method, the setup characteristics and capabilities, along with first experimental results are reported. Preliminary analysis shows good detector performance: alignment error via $\Lambda$ mass measurement $m_\Lambda = 1115.6 MeV/c^2$ with $\sigma = 0.92 MeV/c^2$, $p \pi^-$ relative momentum resolution $\sigma_Q \approx 2.7 MeV/c$, and evidence for $\pi^+ \pi^-$ low momentum Coulomb correlation.

42. Lifetime measurement of pi+ pi- atoms to test low-energy QCD predictions: Proposal to the SPSLC

Author

Adeva, B., Afanasev, L., Angeles Lopez, M., Maurice Benayoun, Chvyrov, A., Ciortea, C., Dumitriu, D., Gianotti, P., Gomes, F., Gorchakov, O., Groza, L., Guaraldo, C., Kalinina, N., Karpukhin, V., Kobayashi, M., Komarov, V., Kruglov, V., Kruglova, L., Kulikov, A., Kuptsov, A., Kuroda, K., Lanaro, A., Le Bornec, Y., Leruste, P., Lucherini, V., Maki, T., Micu, L., Montanet, L., Mozzetti, R., Narjoux, J., Nemenov, L., Nichitiu, F., Nikitin, M., Nupieri, M., Okada, K., Okusawa, T., Olshevsky, V., Pazos, A., Pentia, M., Petrascu, M., Petrascu, C., Piticu, I., Plo, M., Ponta, T., Pustylnik, Z., Ryabkov, D., Rosca, A., Schacher, J., Shcheglov, Yu, Selikov, A., Szilagyi, Z., Takeuchi, F., Tarasov, A., Tatischeff, B., Trusov, Sergey V., Willis, N., Yazkov, V., Yonnet, J., Yoshida, T., Zghiche, A., Zoran, V., and Zrelov, P.

43. Investigating low energy QCD with kaonic atoms: The SIDDHARTA experiment at DAΦNE

Author

Scordo, A., Bazzi, M., Beer, G., Bombelli, L., Bragadireanu, A. M., Cargnelli, M., Clozza, A., Curceanu, C., D’uffizi, A., Fiorini, C., Frizzi, T., Ghio, F., Girolami, B., Guaraldo, C., Hayano, R. S., Iliescu, M., Ishiwatari, T., Masahiko Iwasaki, Kienle, P., Levi Sandri, P., Longoni, A., Marton, J., Okada, S., Pietreanu, D., Pischicchia, K., Ponta, T., Rizzo, A., Romero Vidal, A., Sbardella, E., Shi, H., Sirghi, D. L., Sirghi, F., Tatsuno, H., Tudorache, A., Tudorache, V., Vazquez Doce, O., Widmann, E., Wünschek, B., and Zmeskal, J.

44. Kaonic atoms measurements at DAΦNE by SIDDHARTA

Author

Bazzi, M., Beer, G., Bombelli, L., Bragadireanu, A. M., Cargnelli, M., Corradi, G., Curceanu, C., D’uffizi, A., Fiorini, C., Frizzi, T., Ghio, F., Girolami, B., Guaraldo, C., Hayano, R. S., Mihail Antoniu Iliescu, Ishiwatari, T., Iwasaki, M., Kienle, P., Levi Sandri, P., Longoni, A., Lucherini, V., Marton, J., Okada, S., Pietreanu, D., Ponta, T., Rizzo, A., Romero Vidal, A., Scordo, A., Shi, H., Sirghi, D. L., Sirghi, F., Tatsuno, H., Tudorache, A., Tudorache, V., Vázquez Doce, O., Widmann, E., and Zmeskal, J.

45. The DIRAC experiment at CERN: Current status and future perspectives

Author

Rodriguez Fernandez, A. M., Adeva, B., Afanasev, L., Benayoun, M., Berka, Z., Brekhovskikh, V., Caragheorgheopol, G., Cechak, T., Chiba, M., Costantini, S., Constantinescu, S., Doudarev, A., Dreossi, D., Drijard, D., Ferro-Luzzi, M., Gallas, M. V., Gerndt, J., Giacomich, R., Gianotti, P., Goldin, D., Gorin, A., Gorchakov, O., Guaraldo, C., Hansroul, M., Hosek, R., Iliescu, M., Zhabitsky, M., Kalinina, N., Karpukhin, V., Kluson, J., Kobayashi, M., Kokkas, P., Komarov, V., Kulikov, A., Kuptsov, A., Kruglov, V., Kruglova, L., Kuroda, K. I., Lamberto, A., Lanaro, A., Lapshin, V., Richard Lednicky, Leruste, P., Levi Sandri, P., Lopez Aguera, A., Lucherini, V., Maki, T., Manuilov, I., Montanet, L., Narjoux, J. L., Nemenov, L., Nikitin, M., Nunez Pardo, T., Okada, K., Olchevsky, V., Pazos, A., Pentia, M., Penzo, A., Perreau, J. M., Petrascu, C., Plo, M., Ponta, T., Pop, D., Rapazzo, G. F., Ryazantsev, A., Rodriguez, J. M., Rodriguez Fernandez, A., Rykalin, V., Santamarina, C., Saborido, J., Schacher, J., Schutz, C., Sidorov, A., Smolik, J., Takeutchi, F., Tarasov, A., Tauscher, L., Tobar, M. J., Trusov, Sergey V., Vazquez, P., Vlachos, S., Yazkov, V., Yoshimura, Y., and Zrelov, P.

46. Kaon-nucleon interaction studied by kaonic X rays with dear at DAΦNE

Author

Bianco, S., Bragadireanu, A. M., Fabbri, F. L., Guaraldo, C., Iliescu, M., Ito, T. M., Lucherini, V., Petrascu, C., Bregant, M., Milotti, E., Vacchi, A., Zavattini, E., Augsburger, M., Chatellard, D., Knowles, P., Mulhauser, F., Schaller, L. A., Schellenberg, L., Schneuwly, H., Egger, J. -P, Varidel, D., Breunlich, W. H., Cargnelli, M., Gartner, B., King, R., Lauss, B., Marton, J., Zmeskal, J., Ponta, T., Nakamura, S. N., Koike, T., Ryugo Hayano, Hori, M., Ishikawa, T., Ishiwatari, T., Iwasaki, M., Akaishi, Y., Beer, G., Sanderson, A. C., and Seki, R.

47. Kaonic Helium 3 and 4 measurements by the SIDDHARTA experiment at DAΦNE

Author

Sirghi, D. L., Bazzi, M., Beer, G., Bombelli, L., Bragadireanu, A. M., Cargnelli, M., Corradi, G., Curceanu, C., D Uffizi, A., Fiorini, C., Frizzi, T., Ghio, F., Guaraldo, C., Hayano, R. S., Mihail Antoniu Iliescu, Ishiwatari, T., Iwasaki, M., Kienle, P., Levi Sandri, P., Longoni, A., Lucherini, V., Marton, J., Okada, S., Pietreanu, D., Ponta, T., Rizzo, A., Romero Vidal, A., Scordo, A., Shi, H., Sirghi, F., Tatsuno, H., Tudorache, A., Tudorache, V., Vazquez Doce, O., Widmann, E., and Zmeskal, J.

48. VIP 2: Experimental tests of the Pauli Exclusion Principle for electrons

Author

Pichler, A., Bartalucci, S., Bazzi, M., Bertolucci, S., Berucci, C., Bragadireanu, M., Cargnelli, M., Clozza, A., Curceanu, C., Paolis, L., Di Matteo, S., D Uffizi, A., Egger, J. -P, Guaraldo, C., Iliescu, M., Ishiwatari, T., Laubenstein, M., Marton, J., Milotti, E., Pietreanu, D., Piscicchia, K., Ponta, T., Sbardella, E., Scordo, A., Shi, H., Sirghi, D., Sirghi, F., Sperandio, L., Vazquez-Doce, O., Widmann, E., and Zmeskal Johann

Subjects
Physics - Instrumentation and Detectors, FOS: Physical sciences, Instrumentation and Detectors (physics.ins-det), Detectors and Experimental Techniques
Abstract

The Pauli Exclusion Principle (PEP) was famously discovered in 1925 by the austrian physicist Wolfgang Pauli. Since then, it underwent several experimental tests. Starting in 2006, the VIP (Violation of the Pauli Principle) experiment looked for 2p to 1s X-ray transitions in copper, where 2 electrons are present in the 1s state before the transition happens. These transitions violate the PEP, and the lack of detection of the corresponding X-ray photons lead to a preliminary upper limit for the violation of the PEP of 4.7 * 10^(-29). The follow-up experiment VIP 2 is currently in the testing phase and will be transported to its final destination, the underground laboratory of Gran Sasso in Italy, in autumn 2015. Several improvements compared to its predecessor like the use of new X-ray detectors and active shielding from background gives rise to a goal for the improvement of the upper limit of the probability for the violation of the Pauli Exclusion Principle of 2 orders of magnitude. The Pauli Exclusion Principle (PEP) was famously discovered in 1925 by the austrian physicist Wolfgang Pauli. Since then, it underwent several experimental tests. Starting in 2006, the VIP (Violation of the Pauli Principle) experiment looked for 2p to 1s X-ray transitions in copper, where 2 electrons are present in the 1s state before the transition happens. These transitions violate the PEP, and the lack of detection of the corresponding X-ray photons lead to a preliminary upper limit for the violation of the PEP of 4.7 * 10^(-29). The follow-up experiment VIP 2 is currently in the testing phase and will be transported to its final destination, the underground laboratory of Gran Sasso in Italy, in autumn 2015. Several improvements compared to its predecessor like the use of new X-ray detectors and active shielding from background gives rise to a goal for the improvement of the upper limit of the probability for the violation of the Pauli Exclusion Principle of 2 orders of magnitude.

49. Detection of pionium with DIRAC

Author

Lanaro, A., Adeva, B., Afanasev, L., Benayoun, Maurice, Brekhovskikh, V., Caragheorgheopol, G., Cechak, T., Chiba, M., Constantinescu, S., Doudarev, A., Dreossi, D., Drijard, D., Ferro-Luzzi, M., Gallas Torreira, T., Gerndt, J., Giacomich, R., Gianotti, P., Gomez, F., Gorin, A., Gortchakov, O., Guaraldo, C., Hansroul, M., Hosek, R., Iliescu, M., Kalinina, N., Karpoukhine, V., Kluson, J., Kobayashi, M., Kokkas, P., Komarov, V., Koulikov, A., Kouptsov, A., Krouglov, V., Krouglova, L., Kuroda, K. I., Lapshine, V., Richard Lednicky, Leruste, P., Levi Sandri, P., Lopez Aguera, A., Lucherini, V., Maki, T., Manuilov, I., Montanet, L., Narjoux, J. L., Nemenov, L., Nikitin, M., Nunez Pardo, T., Okada, K., Olchevsky, V., Pazos, A., Pentia, M., Penzo, A., Perreau, J. M., Petrascu, C., Plo, M., Ponta, T., Pop, D., Riazantsev, A., Rodriguez, J. M., Rodriguez Fernandez, A., Rykaline, V., Santamarina, C., Schacher, J., Sidorov, A., Smolik, J., Takeutchi, F., Tarasov, A., Tauscher, L., Trusov, Sergey V., Vazquez, P., Vlachos, S., Yazkov, V., Yoshimura, Y., and Zrelov, P.

Subjects
High Energy Physics::Lattice, High Energy Physics::Experiment, Detectors and Experimental Techniques, Nuclear Experiment
Abstract

The aim of the DIRAC experiment at CERN is to provide an accurate determination of S-wave pion-pion scattering lengths from the measurement of the lifetime of the pi+ pi- atom. The measurement will be done with precision comparable to the level of accuracy of theoretical predictions, formulated in the context of Chiral Perturbation Theory. Therefore, the understanding of chiral symmetry breaking of QCD will be submitted to a stringent test. The aim of the DIRAC experiment at CERN is to provide an accurate determination of S-wave pion-pion scattering lengths from the measurement of the lifetime of the pi+ pi- atom. The measurement will be done with precision comparable to the level of accuracy of theoretical predictions, formulated in the context of Chiral Perturbation Theory. Therefore, the understanding of chiral symmetry breaking of QCD will be submitted to a stringent test.

50. KAONIC ATOMS AT DA Phi NE - THE SIDDHARTA EXPERIMENT

Author

Zmeskal, J., Bazzi, M., Beer, G., Bombelli, L., Bragadireanu, A. M., Buehler, P., Cargnelli, M., Curceanu, C., Fiorini, C., Guaraldo, C., Hayano, R. S., Iliescu, M., Ishiwatari, T., Iwasaki, M., Kienle, P., Longoni, A., Lucherini, V., Marton, J., Nikolics, K., Okada, S., Pietreanu, D., Ponta, T., Vidal, A. Romero, Sandri, P. L., Scordo, A., Sirghi, D. L., Sirghi, F., Suzuki, K., Tatsuno, H., Doce, O. Vazquez, and Eberhard Widmann

Subjects
sezele

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