| Article | |
| Report number | hep-ph/9402343 ; CERN-TH-7202-94 ; ROME-981-1994 ; ROMA-1-981 ; CERN-TH-7202-94 |
| Title | A high statistic lattice calculation of $\int_{B}^{static}$ at $\beta$ = 6.2 using the Clover action |
| Author(s) |
Allton, C.R. (Rome U. ; INFN, Rome) ; Crisafulli, M. (Rome U. ; INFN, Rome) ; Lubicz, V. (Rome U. ; INFN, Rome) ; Salina, G. (Rome U., Tor Vergata ; INFN, Rome) ; Martinelli, G. (Rome U. ; INFN, Rome) ; Vladikas, A. (Rome U., Tor Vergata ; INFN, Rome) ; Bartoloni, A. (Rome U. ; INFN, Rome) ; Battista, C. (Rome U. ; INFN, Rome) ; Cabasino, S. (Rome U. ; INFN, Rome) ; Cabibbo, N. (Rome U., Tor Vergata ; INFN, Rome) ; Marzano, F. (Rome U. ; INFN, Rome) ; Paolucci, P.S. (Rome U. ; INFN, Rome) ; Pech, J. (Rome U. ; INFN, Rome) ; Rapuano, F. (Rome U. ; INFN, Rome ; CERN) ; Sarno, R. (Rome U. ; INFN, Rome) ; Todesco, G.M. (Rome U. ; INFN, Rome) ; Torelli, M. (Rome U. ; INFN, Rome) ; Tross, W. (Rome U. ; INFN, Rome) ; Vicini, P. (Rome U. ; INFN, Rome) |
| Affiliation | (Univ. Roma, "La Sapienza", Roma) ; (INFN Roma) ; (Univ. Roma, "Tor Vergata", Roma) ; (CERN) |
| Publication | 1994 |
| Imprint | 1994 |
| Number of pages | 11 |
| In: | Phys. Lett. B 326 (1994) 295-302 |
| DOI | 10.1016/0370-2693(94)91325-0 |
| Subject category | Particle Physics - Theory |
| Abstract | We present a calculation of $f_B$ in the static limit, obtained by numerical simulation of quenched QCD, at $\beta=6.2$ on a $18 3 \times 64$ lattice, using the SW-Clover quark action. The decay constant has been extracted by studying heavy(static)-light correlation functions of different smeared operators, on a sample of 220 gauge field configurations. We have obtained $f_B {static}=(290 \pm 15 \pm 45)$ MeV, where the first error comes from the uncertainty in the determination of the matrix element and the second comes from the uncertainty in the lattice spacing. We also obtain $M_{B_s}-M_{B_d}= (70 \pm 10)$ MeV and $f {stat}_{B_s}/f {stat}_{B_d}=1.11(3)$. A comparison of our results with other calculations of the same quantity is made. |
| Copyright/License | Copyright @ unknown. Published by Elsevier B.V. |
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