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

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

Publikováno v: Physics Letters B. 704:24-29

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 di erence ja0

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::924201713bf03753f7d657b22ffd0266
https://doi.org/10.1016/j.physletb.2011.08.074

Detection of π+π− atoms with the DIRAC spectrometer at CERN

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

Publikováno v: Journal of Physics G: Nuclear and Particle Physics. 30:1929-1946

The goal of the DIRAC experiment at CERN is to measure with high precision the lifetime of the $\pi^+\pi^-$ atom ($A_{2\pi}$), which is of order $3\times10^{-15}$ s, and thus to determine the s-wave $\pi\pi$-scattering lengths difference $|a_{0}-a_{2

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::2f1aec24d6952675038c2f20d111c963
https://doi.org/10.1088/0954-3899/30/12/012

Study of the reactionp¯p→φφfrom1.1 to 2.0GeV/c

Autor: C. Evangelista, A. Palano, D. Drijard, N. H. Hamann, R. T. Jones, B. Mouëllic, S. Ohlsson, J.-M. Perreau, W. Eyrich, M. Moosburger, S. Pomp, F. Stinzing, H. Fischer, J. Franz, E. Rössle, H. Schmitt, H. Wirth, A. Buzzo, K. Kirsebom, M. Lo Vetere, M. Macrì, M. Marinelli, S. Passaggio, M. G. Pia, A. Pozzo, E. Robutti, A. Santroni, P. T. Debevec, R. A. Eisenstein, P. G. Harris, D. W. Hertzog, S. A. Hughes, P. E. Reimer, J. Ritter, R. Geyer, K. Kilian, W. Oelert, K. Röhrich, M. Rook, O. Steinkamp, H. Korsmo, B. Stugu, T. Johansson

Publikováno v: Physical Review D. 57:5370-5381

A study has been performed of the reaction pbar p -> 4K using in-flight antiprotons from 1.1 to 2.0 GeV/c incident momentum interacting with a hydrogen jet target. The reaction is dominated by the production of a pair of phi mesons. The pbar p -> phi

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::ce7c594b3e73c37f082e1a30cc3df5bf
https://doi.org/10.1103/physrevd.57.5370

φφ excitation function at LEAR

Autor: D. W. Hertzog, K. Kilian, F. Stinzing, T. Johansson, T. Sefzick, M. Rook, M. Macri, H. Fischer, B. Stugu, P. E. Reimer, Arne Johansson, P. C. Harris, S. Ohlsson, S. Passaggio, A. Palano, S. A. Hughes, M. Ferro-Luzzi, M. Moosburger, J. M. Perreau, A. Santroni, M. Price, O. Steinkamp, M. Marinelli, T. Fearnley, H. Wirth, M. Tscheulin, L. Bertolotto, H. J. Urban, H. Korsmo, M. G. Pia, R. Geyer, J. Franz, Maurizio Lo Vetere, A. Klett, J. Ritter, R. Tayloe, P. Debevec, D. Drijard, S. Easo, H. Schmitt, E. Robutti, A. Buzzo, H. Zipse, C. Evangelista, E. Rössle, R. A. Eisenstein, M. Lo Vetere, N. H. Hamann, K. Kirsebom, Stephan Pomp, B. Mouëllic, W. Oelert, K. Röhrich, R. T. Jones, W. Eyrich

Publikováno v: Nuclear Physics B - Proceedings Supplements. 56:256-261

The cross sections of the reactions pp → φφ, φK+K− and 4K± have been measured by the JETSET (PS202) experiment at CERN in the invariant mass range from 2.15 to 2.43 GeV/c2. A spin-parity analysis of the φφ system has been performed. The abs

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::6a980dc8cc5c5f4dd3ab77f363c691da
https://doi.org/10.1016/s0920-5632(97)00284-3

DIRAC: A High Resolution Spectrometer for Pionium Detection

Autor: Nikolaos Manthos, A. Lopez Agüera, J. M. Perreau, F. Triantis, M. Zhabitsky, A. Lanaro, A.V. Kuptsov, G.F. Rappazzo, D. Dreossi, V.I. Komarov, O. Gortchakov, L. Montanet, C. Guaraldo, C. Schuetz, M. Plo, E. Cima, P. Levisandri, M. Nikitin, L. Afanasyev, S.V. Trusov, C. Petrascu, S. Constantinescu, J. Saborido, A. I. Kulikov, J. Smolik, P. Zrelov, V.I. Rykalin, A. Riazantsev, V. Lucherini, T. Nunez Pardo, Tomáš Čechák, J.-L. Narjoux, V. Kruglov, D. Drijard, Makoto Kobayashi, V. Karpukhin, Alessandra Romero, A. Dudarev, T. Ponta, O. Vazquez Doce, D. Orecchini, M. Hansroul, M. Iliescu, Z. Berka, K. Okada, R. Giacomich, R. Lednicky, Josue Molina Rodriguez, F. Gomez, Panagiotis Kokkas, J. Schacher, M. Pentia, L. Kruglova, K. I. Kuroda, D. Pop, Bernardo Adeva, A. Benelli, J. Kluson, C. Santamarina, A. Lamberto, A. Rodriguez Fernandez, M. Giardoni, G. Caragheorgheopol, I. Manuilov, C. Detraz, A. Pazos, A. Tarasov, Ioannis Evangelou, A. Gorin, A. Penzo, M. Gallas, S. Vlachos, V. Kurochkin, V. Olchevskii, D. Goldin, M. Benayoun, M. Steinacher, Y. Yoshimura, Paola Gianotti, A. Sidorov, P. Leruste, Masami Chiba, V. Brekhovskikh, L. Tauscher, Massimiliano Ferro-Luzzi, V. Lapshin, J. Gerndt, M.J. Tobar, L. Nemenov, T. Maki, F. Takeutchi, V. Utkin, V. Yazkov, P. Vazquez

The DIRAC spectrometer has been commissioned at CERN with the aim of detecting $\pi^+ \pi^-$ atoms produced by a 24 GeV/$c$ high intensity proton beam in thin foil targets. A challenging apparatus is required to cope with the high interaction rates i

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::a832b7eef86d4c071fcc7699aebb9f7e