𝔖 Bobbio Scriptorium
✦   LIBER   ✦

Chiral extrapolation of light-light and heavy-light decay constants in unquenched QCD

✍ Scribed by S. Hashimoto; S. Aoki; M. Fukugita; K-I. Ishikawa; N. Ishizuka; Y. Iwasaki; K. Kanaya; T. Kaneko; Y. Kuramashi; M. Okawa; N. Tsutsui; A. Ukawa; N. Yamada; T. Yoshie´

Publisher
Elsevier Science
Year
2003
Tongue
English
Weight
263 KB
Volume
119
Category
Article
ISSN
0920-5632

No coin nor oath required. For personal study only.

✦ Synopsis

We test the one-loop chiral perturbation theory formula on unquenched lattice data of pseudoscalar meson decay constants. The chiral extrapolation including the effect of the chiral logarithm is attempted and its uncertainty is discussed.

📜 SIMILAR VOLUMES

Precise determination of the Grinstein r
Precise determination of the Grinstein ratio of heavy-light decay constant in unquenched QCD
✍ T. Onogi; M. Fukugita; S. Hashimoto; K-I. Ishikawa; N. Ishizuka; Y. Iwasaki; K. 📂 Article 📅 2003 🏛 Elsevier Science 🌐 English ⚖ 261 KB

We study the chiral behavior of the ratio of heavy-light decay constants on unquenched lattices with two flavor dynamical quarks using the plaquette gauge action and the nonperturbatively O(a)-improved Wilson fermion action at ,0 = 5.2. The heavy quarks are described by the clover action and the NRQ

Heavy-light decay constants for B and D
Heavy-light decay constants for B and D mesons in nf = 2 unquenched QCD in Fermilab formalism
✍ T. Onogi; S. Aoki; M. Fukugita; S. Hashimoto; K.-I. Ishikawa; N. Ishizuka; Y. Iw 📂 Article 📅 2004 🏛 Elsevier Science 🌐 English ⚖ 278 KB

We report our calculation of the heavy-light decay constants fB and fD on a 203 x 48 lattice at 0 = 5.2 with nf = 2 sea quarks by the fully O(a)-improved Wilson fermion and heavy quarks in Fermilab formalism. We find that the B meson decay constants are consistent with those obtained with the NRQCD

Spectra and M1 decay widths of heavy–lig
Spectra and M1 decay widths of heavy–light mesons
✍ T.A. Lähde; C.J. Nyfält; D.O. Riska 📂 Article 📅 2000 🏛 Elsevier Science 🌐 English ⚖ 206 KB

The M1 decay widths of charm and bottom mesons and their excited states are sensitive to the relativistic aspect of the quark current operators and obtain a significant contribution from the interaction current that is associated with the scalar confining interaction between heavy quarks (Q) and lig