## Abstract

The decay constants of pseudoscalar heavy mesons of 0 ^{-} state are computed by means of the relativistic (instantaneous) Salpeter equation. We solved the full Salpeter equation without making any further approximation, such as ignoring the small component wave function. Therefore, our results for the decay constants include the complete relativistic contributions from the light and the heavy quarks. We obtain F _{Ds}≈248±27, F _{D}≈230±25(D ^{0},D ^{±}), F _{Bs}≈216±32, F _{B}≈196±29(B ^{0},B ^{±}), F _{Bc}≈322±42 and F _{ηc}≈292±25 MeV.

Original language | English |
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Pages (from-to) | 84-89 |

Number of pages | 6 |

Journal | Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics |

Volume | 596 |

Issue number | 1-2 |

DOIs | |

Publication status | Published - 2004 Aug 19 |

### Bibliographical note

Funding Information:The work of C.S.K. was supported in part by CHEP-SRC Program, in part by Grant No. R02-2003-000-10050-0 from BRP of the KOSEF. The work of G.W. was supported by BK21 Program, and in part by Grant No. F01-2004-000-10292-0 of KOSEF-NSFC International Collaborative Research Grant. The work of G.C. was supported by FONDECYT (Chile) Grant No.1010094.

## All Science Journal Classification (ASJC) codes

- Nuclear and High Energy Physics

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