EPJ

2021 Impact factor 4.991
EPJ C - Particles and Fields
Particles and Fields


Eur. Phys. J. C 20, 445-454 (2001)
DOI: 10.1007/s100520100696

A search for a narrow radial excitation of the $\mathrm{D}^{*\pm}$ Meson

The OPAL Collaboration G. Abbiendi and et al.

Dipartimento di Fisica dell' Università di Bologna and INFN, 40126 Bologna, Italy

Abstract
A sample of 3.73 million hadronic Z decays, recorded with the OPAL detector at LEP in the years 1991-95, has been used to search for a narrow resonance corresponding to the decay of the $\mathrm{D}^{*\prime\pm}(2629)$ meson into $\mathrm{D}^{*\pm}\mathrm{\pi}^{+}\mathrm{\pi}^{-}$. The D*+ mesons are reconstructed in the decay channel $\mathrm{D}^{*+} \to \mathrm{D}^{0} \mathrm{\pi}^{+}$ with $\mathrm{D}^{0} \to \mathrm{K}^{-}\mathrm{\pi}^{+}$. No evidence for a narrow $\mathrm{D}^{*\prime\pm}(2629)$ resonance is found. A limit on the production of narrow $\mathrm{D}^{*\prime\pm}(2629)$ in hadronic Z decays is derived: $f(\mathrm{Z} \to \mathrm{D}^{*\prime\pm}(2629)) \times Br(\mathrm{D}^{*\prime +... ... \mathrm{\pi}^{+} \mathrm{\pi}^{-}) < 3.1 \times 10^{-3} \mathrm{(95\% C.L.)} $



© Società Italiana di Fisica, Springer-Verlag 2001

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