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First evidence for a charm radial excitation, D*-prime

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Abreu, P. [--] Cortina Gil, Eduardo [UCL] DELPHI Collaboration [--]

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.

Document type Article de périodique (Journal article) – Article de recherche
Access type Accès libre
Publication date 1998
Language Anglais
Journal information "Physics Letters. Section B: Nuclear, Elementary Particle and High-Energy Physics" - Vol. 426, no.1-2, p. 231–242 (1998)
Peer reviewed yes
Publisher Elsevier BV * North-Holland ((Netherlands) Amsterdam)
issn 0370-2693
e-issn 1873-2445
Publication status Publié
Affiliation UCL - SST/IRMP - Institut de recherche en mathématique et physique
Links
Bibliographic reference Abreu, P. ; Cortina Gil, Eduardo ; DELPHI Collaboration ; et. al. First evidence for a charm radial excitation, D*-prime . In: Physics Letters. Section B: Nuclear, Elementary Particle and High-Energy Physics, Vol. 426, no.1-2, p. 231–242 (1998)
Permanent URL http://hdl.handle.net/2078.1/123364