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DELPHI Collaboration; Alemany Fernández, Reyes; Cabrera Urbán, Susana; Castillo Giménez, María Victoria; Cortina Gil, Eduardo; Colomer, M.; Ferrer Soria, Antonio; Fuster Verdú, Juan A.; García García, Carmen; Gil Botella, Inés; Hernández Rey, Juan José; Higón Rodríguez, Emilio; Lacasta Llácer, Carlos; Martínez Vidal, Fernando; Navas Concha, Sergio; Salt Cairols, José | |||
Aquest document és un/a article, creat/da en: 1998 | |||
Este documento está disponible también en : 10.1016/S0370-2693(98)00346-3 |
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Using D∗+ mesons exclusively reconstructed in the DELPHI detector at LEP, an excess of 66±14(stat.) events is observed in the D∗+π+π− final state with a mass of 2637±2(stat.)±6(syst.)~MeV/c2 and a full width smaller than 15~MeV/c2 (95\% C.L.). This signal is compatible with the expected decay of a radially excited D∗′ (JP=1−) meson. | |||
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