First measurement of the pi+pi- atom lifetime

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dc.contributor.affiliationUniversidade de Santiago de Compostela. Departamento de Física de Partículas
dc.contributor.authorRomero Vidal, Antonio
dc.contributor.authorSantamarina Ríos, Cibrán
dc.contributor.authorSaborido Silva, Juan José
dc.contributor.authorAdeva Andany, Bernardo
dc.contributor.authorGómez Rodríguez, Faustino
dc.contributor.authorLópez Aguera, María de los Ángeles
dc.contributor.authorPló Casasús, Máximo
dc.contributor.authorVázquez Regueiro, Pablo
dc.contributor.authorDIRAC Collaboration
dc.date.accessioned2025-01-29T12:01:09Z
dc.date.available2025-01-29T12:01:09Z
dc.date.issued2005-07-14
dc.description.abstractThe 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+0.49 −0.62] × 10−15 s, and discuss the major systematic errors. This lifetime corresponds to |a0 − a2| = 0.264+0.033 −0.020m−1 π .
dc.description.peerreviewedSI
dc.identifier.citationB. Adeva, L. Afanasyev, M. Benayoun, A. Benelli, Z. Berka, V. Brekhovskikh, G. Caragheorgheopol, T. Cechak, M. Chiba, S. Constantinescu, C. Detraz, D. Dreossi, D. Drijard, A. Dudarev, I. Evangelou, M. Ferro-Luzzi, M.V. Gallas, J. Gerndt, R. Giacomich, P. Gianotti, D. Goldin, F. Gómez, A. Gorin, O. Gorchakov, C. Guaraldo, M. Hansroul, R. Hosek, M. Iliescu, V. Karpukhin, J. Kluson, M. Kobayashi, P. Kokkas, V. Komarov, V. Kruglov, L. Kruglova, A. Kulikov, A. Kuptsov, I. Kurochkin, K.-I. Kuroda, A. Lamberto, A. Lanaro, V. Lapshin, R. Lednicky, P. Leruste, P. Levi Sandri, A. Lopez Aguera, V. Lucherini, T. Maki, N. Manthos, I. Manuilov, L. Montanet, J.-L. Narjoux, L. Nemenov, M. Nikitin, T. Núñez Pardo, K. Okada, V. Olchevskii, A. Pazos, M. Pentia, A. Penzo, J.-M. Perreau, C. Petrascu, M. Pló, T. Ponta, D. Pop, G.F. Rappazzo, A. Rodriguez Fernandez, A. Romero, A. Ryazantsev, V. Rykalin, C. Santamarina, J. Saborido, J. Schacher, Ch.P. Schuetz, A. Sidorov, J. Smolik, F. Takeutchi, A. Tarasov, L. Tauscher, M.J. Tobar, S. Trusov, V. Utkin, O. Vázquez Doce, P. Vázquez, S. Vlachos, V. Yazkov, Y. Yoshimura, M. Zhabitsky, P. Zrelov, First measurement of the π+π− atom lifetime, Physics Letters B, Volume 619, Issues 1–2, 2005, Pages 50-60, ISSN 0370-2693, https://doi.org/10.1016/j.physletb.2005.05.045.
dc.identifier.doi10.1016/j.physletb.2005.05.045
dc.identifier.essn1873-2445
dc.identifier.issn0370-2693
dc.identifier.urihttps://hdl.handle.net/10347/39244
dc.journal.titlePhysics Letters B
dc.language.isoeng
dc.page.final60
dc.page.initial50
dc.publisherElsevier
dc.relation.publisherversionhttps://doi.org/10.1016/j.physletb.2005.05.045
dc.rightsAttribution 4.0 Internationalen
dc.rights.accessRightsopen access
dc.rights.urihttp://creativecommons.org/licenses/by/4.0/
dc.subject.classification22 Física
dc.titleFirst measurement of the pi+pi- atom lifetime
dc.typejournal article
dc.type.hasVersionVoR
dc.volume.number619
dspace.entity.typePublication
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