Journal article 1056 views
A high statistics lattice calculation of using the clover action
Physics Letters B, Volume: 326, Issue: 3-4, Pages: 295 - 302
Swansea University Author:
Chris Allton
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DOI (Published version): 10.1016/0370-2693(94)91325-0
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 op...
| Published in: | Physics Letters B |
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| ISSN: | 03702693 |
| Published: |
1994
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| Online Access: |
Check full text
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| URI: | https://cronfa.swan.ac.uk/Record/cronfa28496 |
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| 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. |
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| College: |
Faculty of Science and Engineering |
| Issue: |
3-4 |
| Start Page: |
295 |
| End Page: |
302 |