Year: 2014
Type: article
Abstract: The results of a search for hydrogen-like atoms consisting of π ∓ K ± mesons are presented. Evidence for πK atom production by 24 GeV/c protons from CERN PS interacting with a nickel target has been seen in terms of characteristic πK pairs from their breakup in the same target ( 178 ± 49 ) as well as in terms of produced πK atoms ( 653 ± 42 ). Using these results, the analysis yields a first value for the πK atom lifetime of τ = ( 2.5 − 1.8 + 3.0 ) fs and a first measurement of the S-wave isospin-odd πK scattering length | a 0 − | = 1 3 | a 1 / 2 − a 3 / 2 | = ( 0.11 − 0.04 + 0.09 ) M π − 1 ( a I for isospin I ).
Source: Physics Letters B
Authors: B. Adeva, L. Afanasyev, Y. Allkofer, C. Amsler, A. Anania, S. Aogaki, A. Benelli, V. Brekhovskikh, T. Cechak, M. Chiba, P. Chliapnikov, C. Ciocarlan, S. Constantinescu, P. Doskarova, D. Drijard, A. Dudarev, M. Duma, 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, T. Ponta, P. Prusa, G. Rappazzo, A. Romero Vidal, A. Ryazantsev, V. Rykalin, J. Saborido, J. Schacher, A. Sidorov, J. Smolik, S. Sugimoto, F. Takeutchi, L. Tauscher, T. Trojek, S. Trusov, T. Urban, T. Vrba, V. Yazkov, Y. Yoshimura, M. Zhabitsky, P. Zrelov
Institutions: Universidade de Santiago de Compostela, Joint Institute for Nuclear Research, University of Zurich, University of Bern, University of Messina, Istituto Nazionale di Fisica Nucleare, Sezione di Trieste, Horia Hulubei National Institute for R and D in Physics and Nuclear Engineering, Institute for High Energy Physics, Czech Technical University in Prague, Tokyo Metropolitan University, European Organization for Nuclear Research, Istituto Nazionale di Fisica Nucleare, Istituto Nazionale di Fisica Nucleare, Laboratori Nazionali di Frascati, Czech Academy of Sciences, Nuclear Physics Institute, Kyoto University, High Energy Accelerator Research Organization, University of Wisconsin–Madison, FZU - Institute of Physics of the Czech Academy of Sciences, Kyoto Sangyo University, University of Basel, Lomonosov Moscow State University, Skobeltsyn Institute of Nuclear Physics, Lomonosov Moscow State University
Language: English
Subfield: Nuclear and High Energy Physics
Field: Physics and Astronomy
Domain: Physical Sciences
Open Access status: diamond
Funders: National Science Foundation, CERN, Schweizerischer Nationalfonds zur Förderung der Wissenschaftlichen Forschung, Russian Foundation for Basic Research, Ministry of Education and Science of the Russian Federation, Joint Institute for Nuclear Research, Ministry of Education and Research, Romania, Università degli Studi di Messina, Xunta de Galicia, Istituto Nazionale di Fisica Nucleare, Japan Society for the Promotion of Science
OpenAlex ID: W2102239670