First measurement of a long-lived $\pi^+ \pi^-$ atom lifetime

Autor: Adeva, B., Afanasyev, L., Anania, A., Aogaki, S., Benelli, A., Brekhovskikh, V., Cechak, T., Chiba, M., Chliapnikov, P. V., Doskarova, P., Drijard, D., Dudarev, A., 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., Lamberto, A., Lanaro, A., Lednicky, R., Mariñas, C., Martincik, J., Nemenov, L., Nikitin, M., Okada, K., Olchevskii, V., Ovsiannikov, V., Pentia, M., Penzo, A., Plo, M., Prusa, P., Rappazzo, G. F., Vidal, A. Romero, Ryazantsev, A., Rykalin, V., Saborido, J., Schacher, J., Sidorov, A., Smolik, J., Takeutchi, F., Trojek, T., Trusov, S., Vrba, T., Yazkov, V., Yoshimura, Y., Zrelov, P.

Publikováno v: Phys. Rev. Lett. 122, 082003 (2019)

The adapted DIRAC experiment at the CERN PS accelerator observed for the first time long-lived hydrogen-like $\pi^+\pi^-$ atoms, produced by protons hitting a beryllium target. A part of these atoms crossed the gap of 96~mm and got broken up in the 2

Externí odkaz: http://arxiv.org/abs/1811.08659

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

Autor: 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., Zrelov, P.

Publikováno v: Physics Letters B 704 (2011) 24

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

Externí odkaz: http://arxiv.org/abs/1109.0569

First Measurement of a Long-Lived π+π− Atom Lifetime

Autor: P. Chliapnikov, Bernardo Adeva, V. D. Ovsiannikov, A. Romero Vidal, V.I. Rykalin, Tomáš Trojek, D. Fluerasu, O.E. Gorchakov, P. Prusa, C. Guaraldo, S.V. Trusov, Y. Yoshimura, E. Kulish, A. Sidorov, Masami Chiba, A. Lamberto, Tomáš Čechák, J. Kluson, M. Plo, A. Anania, D. Drijard, M. Pentia, J. Saborido, Yoshihisa Iwashita, L. Kruglova, Z. Hons, A. Gorin, V. Kruglov, V. Brekhovskikh, G.F. Rappazzo, M. Gugiu, R. Lednicky, T. Urban, J. Schacher, Fujio Takeutchi, A. Ryazantsev, P. Zrelov, V. Olchevskii, A. Benelli, A. Dudarev, A. I. Kulikov, J. Smolik, Masaki Kobayashi, V. Yazkov, J. Martincik, M. Hansroul, K. Okada, C. Marinas, D. Dumitriu, A. Penzo, K. Gritsay, L. Nemenov, M. Nikitin, T. Vrba, V. Karpukhin, P. Doskarova, Armando Lanaro, S. Aogaki, S. Horikawa, L. Afanasyev

Publikováno v: Physical Review Letters. 122

The adapted DIRAC experiment at the CERN PS accelerator observed for the first time long-lived hydrogenlike π+π- atoms, produced by protons hitting a beryllium target. A part of these atoms crossed the gap of 96 mm between the target and a 2.1 μm

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::a96ba9075e4e3d3bfcf9be7dc37feae7
https://doi.org/10.1103/physrevlett.122.082003

First πK atom lifetime and πK scattering length measurements

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

Publikováno v: Amsler, Claude; Schacher, Jürg (2014). First πK atom lifetime and πK scattering length measurements. Physics letters. B, 735, pp. 288-294. Elsevier 10.1016/j.physletb.2014.06.043
Physics Letters B

The results of a search for hydrogen-like atoms consisting of $\pi^{\mp}K^{\pm}$ mesons are presented. Evidence for $\pi K$ atom production by 24 GeV/c protons from CERN PS interacting with a nickel target has been seen in terms of characteristic $\p

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::1b0f84d4206b31ac7b04b4f23cb89dd5
https://doi.org/10.1016/j.physletb.2014.06.043

Observation of π^{-}K^{+} and π^{+}K^{-} Atoms

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

Publikováno v: Physical review letters. 117(11)

The observation of hydrogenlike πK atoms, consisting of π^{-}K^{+} or π^{+}K^{-} mesons, is presented. The atoms are produced by 24 GeV/c protons from the CERN PS accelerator, interacting with platinum or nickel foil targets. The breakup (ionizati

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=pmid________::7ae8d0709b930913ab31f93c713f3939
https://pubmed.ncbi.nlm.nih.gov/27661682