Observation of $\pi^- K^+$ and $\pi^+ K^-$ atoms

The observation of hydrogen-like $\pi K$ atoms, consisting of $\pi^- K^+$ or $\pi^+ K^-$ mesons, is presented. The atoms have been produced by 24 GeV/$c$ protons from the CERN PS accelerator, interacting with platinum or nickel foil targets. The breakup (ionisation) of $\pi K$ atoms in the same targ...

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Detalles Bibliográficos
Autores principales: Adeva, B., Afanasyev, L., Allkofer, Y., Amsler, C., Anania, A., Aogaki, S., Benelli, A., Brekhovskikh, V., Cechak, T., Chiba, M., Chliapnikov, P., 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., Kuptsov, A., Lamberto, A., Lanaro, A., Lednicky, R., Marinas, C., Martincik, J., Nikitin, M., Okada, K., Olchevskii, V., Pentia, M., Penzo, A., Plo, M., Prusa, P., Rappazzo, G., Vidal, A.Romero, Ryazantsev, A., Rykalin, V., Saborido, J., Sidorov, A., Smolik, J., Takeutchi, F., Tauscher, L., Trojek, T., Trusov, S., Urban, T., Vrba, T., Yazkov, V., Yoshimura, Y., Zhabitsky, M., Zrelov, P.
Lenguaje:eng
Publicado: 2016
Materias:
Particle Physics - Experiment
Acceso en línea:https://dx.doi.org/10.1103/PhysRevLett.117.112001
http://cds.cern.ch/record/2149444
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author Adeva, B.
Afanasyev, L.
Allkofer, Y.
Amsler, C.
Anania, A.
Aogaki, S.
Benelli, A.
Brekhovskikh, V.
Cechak, T.
Chiba, M.
Chliapnikov, P.
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.
Kuptsov, A.
Lamberto, A.
Lanaro, A.
Lednicky, R.
Marinas, C.
Martincik, J.
Nikitin, M.
Okada, K.
Olchevskii, V.
Pentia, M.
Penzo, A.
Plo, M.
Prusa, P.
Rappazzo, G.
Vidal, A.Romero
Ryazantsev, A.
Rykalin, V.
Saborido, J.
Sidorov, A.
Smolik, J.
Takeutchi, F.
Tauscher, L.
Trojek, T.
Trusov, S.
Urban, T.
Vrba, T.
Yazkov, V.
Yoshimura, Y.
Zhabitsky, M.
Zrelov, P.
author_facet Adeva, B.
Afanasyev, L.
Allkofer, Y.
Amsler, C.
Anania, A.
Aogaki, S.
Benelli, A.
Brekhovskikh, V.
Cechak, T.
Chiba, M.
Chliapnikov, P.
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.
Kuptsov, A.
Lamberto, A.
Lanaro, A.
Lednicky, R.
Marinas, C.
Martincik, J.
Nikitin, M.
Okada, K.
Olchevskii, V.
Pentia, M.
Penzo, A.
Plo, M.
Prusa, P.
Rappazzo, G.
Vidal, A.Romero
Ryazantsev, A.
Rykalin, V.
Saborido, J.
Sidorov, A.
Smolik, J.
Takeutchi, F.
Tauscher, L.
Trojek, T.
Trusov, S.
Urban, T.
Vrba, T.
Yazkov, V.
Yoshimura, Y.
Zhabitsky, M.
Zrelov, P.
author_sort Adeva, B.
collection CERN
description The observation of hydrogen-like $\pi K$ atoms, consisting of $\pi^- K^+$ or $\pi^+ K^-$ mesons, is presented. The atoms have been produced by 24 GeV/$c$ protons from the CERN PS accelerator, interacting with platinum or nickel foil targets. The breakup (ionisation) of $\pi K$ atoms in the same targets yields characteristic $\pi K$ pairs, called ``atomic pairs'', with small relative momenta in the pair centre-of-mass system. The upgraded DIRAC experiment has observed $349\pm62$ such atomic $\pi K$ pairs, corresponding to a signal of 5.6 standard deviations.
id cern-2149444
institution Organización Europea para la Investigación Nuclear
language eng
publishDate 2016
record_format invenio
spelling cern-21494442022-08-10T12:38:55Zdoi:10.1103/PhysRevLett.117.112001http://cds.cern.ch/record/2149444engAdeva, B.Afanasyev, L.Allkofer, Y.Amsler, C.Anania, A.Aogaki, S.Benelli, A.Brekhovskikh, V.Cechak, T.Chiba, M.Chliapnikov, P.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.Kuptsov, A.Lamberto, A.Lanaro, A.Lednicky, R.Marinas, C.Martincik, J.Nikitin, M.Okada, K.Olchevskii, V.Pentia, M.Penzo, A.Plo, M.Prusa, P.Rappazzo, G.Vidal, A.RomeroRyazantsev, A.Rykalin, V.Saborido, J.Sidorov, A.Smolik, J.Takeutchi, F.Tauscher, L.Trojek, T.Trusov, S.Urban, T.Vrba, T.Yazkov, V.Yoshimura, Y.Zhabitsky, M.Zrelov, P.Observation of $\pi^- K^+$ and $\pi^+ K^-$ atomsParticle Physics - ExperimentThe observation of hydrogen-like $\pi K$ atoms, consisting of $\pi^- K^+$ or $\pi^+ K^-$ mesons, is presented. The atoms have been produced by 24 GeV/$c$ protons from the CERN PS accelerator, interacting with platinum or nickel foil targets. The breakup (ionisation) of $\pi K$ atoms in the same targets yields characteristic $\pi K$ pairs, called ``atomic pairs'', with small relative momenta in the pair centre-of-mass system. The upgraded DIRAC experiment has observed $349\pm62$ such atomic $\pi K$ pairs, corresponding to a signal of 5.6 standard deviations.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 (ionization) of πK atoms in the same targets yields characteristic πK pairs, called “atomic pairs,” with small relative momenta Q in the pair center-of-mass system. The upgraded DIRAC experiment observed 349±62 such atomic πK pairs, corresponding to a signal of 5.6 standard deviations. This is the first statistically significant observation of the strange dimesonic πK atom.The observation of hydrogen-like $\pi K$ atoms, consisting of $\pi^- K^+$ or $\pi^+ K^-$ mesons, is presented. The atoms have been produced by 24 GeV/$c$ protons from the CERN PS accelerator, interacting with platinum or nickel foil targets. The breakup (ionisation) of $\pi K$ atoms in the same targets yields characteristic $\pi K$ pairs, called "atomic pairs", with small relative momenta in the pair centre-of-mass system. The upgraded DIRAC experiment has observed $349\pm62$ such atomic $\pi K$ pairs, corresponding to a signal of 5.6 standard deviations.arXiv:1605.06103CERN-EP-2016-128DIRAC-PUB-2016-02oai:cds.cern.ch:21494442016-04-29
spellingShingle Particle Physics - Experiment
Adeva, B.
Afanasyev, L.
Allkofer, Y.
Amsler, C.
Anania, A.
Aogaki, S.
Benelli, A.
Brekhovskikh, V.
Cechak, T.
Chiba, M.
Chliapnikov, P.
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.
Kuptsov, A.
Lamberto, A.
Lanaro, A.
Lednicky, R.
Marinas, C.
Martincik, J.
Nikitin, M.
Okada, K.
Olchevskii, V.
Pentia, M.
Penzo, A.
Plo, M.
Prusa, P.
Rappazzo, G.
Vidal, A.Romero
Ryazantsev, A.
Rykalin, V.
Saborido, J.
Sidorov, A.
Smolik, J.
Takeutchi, F.
Tauscher, L.
Trojek, T.
Trusov, S.
Urban, T.
Vrba, T.
Yazkov, V.
Yoshimura, Y.
Zhabitsky, M.
Zrelov, P.
Observation of $\pi^- K^+$ and $\pi^+ K^-$ atoms
title Observation of $\pi^- K^+$ and $\pi^+ K^-$ atoms
title_full Observation of $\pi^- K^+$ and $\pi^+ K^-$ atoms
title_fullStr Observation of $\pi^- K^+$ and $\pi^+ K^-$ atoms
title_full_unstemmed Observation of $\pi^- K^+$ and $\pi^+ K^-$ atoms
title_short Observation of $\pi^- K^+$ and $\pi^+ K^-$ atoms
title_sort observation of $\pi^- k^+$ and $\pi^+ k^-$ atoms
topic Particle Physics - Experiment
url https://dx.doi.org/10.1103/PhysRevLett.117.112001
http://cds.cern.ch/record/2149444
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