Zobrazeno 1 - 10
of 26
pro vyhledávání: '"R. J. Dowdall"'
Autor:
R. R. Horgan, Matthew Wingate, R. J. Dowdall, Junko Shigemitsu, Christine Davies, Christopher J. Monahan, G. P. Lepage
Publikováno v:
Physical Review
We calculate the bag parameters for neutral $B$-meson mixing in and beyond the Standard Model, in full four-flavour lattice QCD for the first time. We work on gluon field configurations that include the effect of $u$, $d$, $s$ and $c$ sea quarks with
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::ffa322e8d0d6f6b05891fc955c141fc9
https://doi.org/10.1103/physrevd.100.094508
https://doi.org/10.1103/physrevd.100.094508
Autor:
Bipasha Chakraborty, Thomas Teubner, R. J. Dowdall, Jonna Koponen, Christine Davies, G. Peter Lepage, Pedro Gonçalves de Oliveira, Gordon Donald
Publikováno v:
NUCLEAR AND PARTICLE PHYSICS PROCEEDINGS
We describe a new technique (published in Phys. Rev. D89 114501) to determine the contribution to the anomalous magnetic moment of the muon coming from the hadronic vacuum polarisation using lattice QCD. Our method uses Pad\'e approximants to reconst
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::91af8e2bb76313d130e378ad79f6abee
Publikováno v:
Physical Review D. 93
The exclusive semileptonic decay $B\ensuremath{\rightarrow}\ensuremath{\pi}\ensuremath{\ell}\ensuremath{\nu}$ is a key process for the determination of the Cabibbo-Kobayashi-Maskawa matrix element ${V}_{ub}$ from the comparison of experimental rates
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::8f2075ef5a82eb2bbaa2411d6b6ec965
https://doi.org/10.1103/physrevd.93.034502
https://doi.org/10.1103/physrevd.93.034502
Autor:
R. J. Dowdall
Publikováno v:
Open Physics, Vol 9, Iss 4, Pp 1043-1056 (2011)
Group field theories whose Feynman diagrams describe 3d gravity with a varying configuration of Wilson loop observables and 3d gravity with volume observables at each vertex are defined. The volume observables are created by the usual spin network gr
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::dc7b9af15468ef9477836caee1e448c8
https://doi.org/10.2478/s11534-010-0137-2
https://doi.org/10.2478/s11534-010-0137-2
Autor:
Matthew Wingate, R. R. Horgan, Ciaran Hughes, Georg von Hippel, Christine Davies, R. J. Dowdall
Publikováno v:
Physical Review D. 92
We present a calculation of the hindered M1 $\mathrm{\ensuremath{\Upsilon}}(2S)\ensuremath{\rightarrow}{\ensuremath{\eta}}_{b}(1S)\ensuremath{\gamma}$ decay rate using lattice nonrelativistic quantum chromodynamics. The calculation includes spin-depe
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::fdf42d0062f71a41e8d582f60d032fc0
https://doi.org/10.1103/physrevd.92.094501
https://doi.org/10.1103/physrevd.92.094501
Publikováno v:
Physical Review D. 92
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::57dba5a88fb8c9f3a3c80655caa32cbd
https://doi.org/10.1103/physrevd.92.039904
https://doi.org/10.1103/physrevd.92.039904
Autor:
Christopher Monahan, Junko Shigemitsu, Peter Lepage, R. J. Dowdall, Christine Davies, R. R. Horgan
Publikováno v:
Proceedings of The 32nd International Symposium on Lattice Field Theory — PoS(LATTICE2014).
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::cd4a132e0cf51ee677417bb9b734473a
https://doi.org/10.22323/1.214.0373
https://doi.org/10.22323/1.214.0373
Publikováno v:
Physical Review D. 91
We determine the decay rate to leptons of the ground-state $\mathrm{\ensuremath{\Upsilon}}$ meson and its first radial excitation in lattice QCD for the first time. We use radiatively improved nonrelativistic QCD for the $b$ quarks and include $u$, $
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::cac2c6d9ab85961474c8ae9816f80d5c
https://doi.org/10.1103/physrevd.91.074514
https://doi.org/10.1103/physrevd.91.074514
Autor:
Christine Davies, J. Kettle, J. Koponen, G. P. Lepage, R. J. Dowdall, Andrew Lytle, B. Colquhoun
We extend the picture of $B$-meson decay constants obtained in lattice QCD beyond those of the $B$, $B_s$ and $B_c$ to give the first full lattice QCD results for the $B^*$, $B^*_s$ and $B^*_c$. We use improved NonRelativistic QCD for the valence $b$
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::fd9464f46ce9b13bda796468eb080257
http://arxiv.org/abs/1503.05762
http://arxiv.org/abs/1503.05762
Autor:
G. P. Lepage, Thomas Teubner, Gordon Donald, J. Koponen, Christine Davies, Bipasha Chakraborty, R. J. Dowdall
Publikováno v:
Physical Review D
We describe a new technique to determine the contribution to the anomalous magnetic moment of the muon coming from the hadronic vacuum polarization using lattice QCD. Our method reconstructs the Adler function, using Pad\'{e} approximants, from its d
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::fe2243fe049fcba7372b86201e9728c2
https://doi.org/10.1103/physrevd.89.114501
https://doi.org/10.1103/physrevd.89.114501