Zobrazeno 1 - 10
of 93
pro vyhledávání: '"G. P. Lepage"'
Publikováno v:
Physical Review Physics Education Research, Vol 15, Iss 2, p 020114 (2019)
We have studied the impact of incoming preparation and demographic variables on student performance on the final exam in the standard introductory calculus-based mechanics course at three different institutions. Multivariable regression analysis was
Externí odkaz:
https://doaj.org/article/5b31d7d6450b42b88db2cb9f1be9d75f
Autor:
Chris Bouchard, Bipasha Chakraborty, W. G. Parrott, J. Koponen, Christine Davies, G. P. Lepage
Publikováno v:
Physical Review
We provide a 0.8%-accurate determination of Vcs from combining experimental results for the differential rate of D→K semileptonic decays with precise form factors that we determine from lattice QCD. This is the first time that Vcs has been determin
Publikováno v:
Physical Review D. 103
We extend HPQCD's earlier ${n}_{f}=2+1+1$ lattice-QCD analysis of the ratio of $\overline{\mathrm{MS}}$ masses of the $b$ and $c$ quark to include results from finer lattices (down to 0.03 fm) and a new calculation of QED contributions to the mass ra
Publikováno v:
Physical Review D. 103
We calculate the mass difference between the $\mathrm{\ensuremath{\Upsilon}}$ and ${\ensuremath{\eta}}_{b}$ and the $\mathrm{\ensuremath{\Upsilon}}$ leptonic width from lattice QCD using the highly improved staggered quark formalism for the $b$ quark
Publikováno v:
Physical Review
Lattice QCD calculations of form factors for rare Standard Model processes such as $B \to K \ell^+ \ell^-$ use tensor currents that require renormalisation. These renormalisation factors, $Z_T$, have typically been calculated within perturbation theo
Publikováno v:
Physical Review D. 102
We have performed the first n f = 2 + 1 + 1 lattice QCD computations of the properties (masses and decay constants) of ground-state charmonium mesons. Our calculation uses the HISQ action to generate quark-line connected two-point correlation functio
Publikováno v:
Physical Review
Hadron masses are subject to few MeV corrections arising from QED interactions, almost entirely arising from the electric charge of the valence quarks. The QED effects include both self-energy contributions and interactions between the valence quarks
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::694975be35ed865cc826e7e5fe225c42
http://arxiv.org/abs/2009.07667
http://arxiv.org/abs/2009.07667
Autor:
Steven Gottlieb, A. Vaquero, R. S. Van de Water, G. P. Lepage, Jack Laiho, Aida X. El-Khadra, D. Toussaint, D. Hatton, Paul B. Mackenzie, J. N. Simone, Carleton DeTar, T. Primer, Christine Davies, Andreas S. Kronfeld, Craig McNeile, Yuzhi Liu, Ethan T. Neil, Elvira Gamiz
Publikováno v:
Physical Review
We calculate the contribution to the muon anomalous magnetic moment hadronic vacuum polarization from {the} connected diagrams of up and down quarks, omitting electromagnetism. We employ QCD gauge-field configurations with dynamical $u$, $d$, $s$, an
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::6ee692810c44d81cd4040b68ff8f6802
https://eprints.gla.ac.uk/209868/1/209868.pdf
https://eprints.gla.ac.uk/209868/1/209868.pdf
Autor:
Ethan T. Neil, G. P. Lepage, Aida X. El-Khadra, Steven Gottlieb, D. Toussaint, Alejandro Vaquero, R. S. Van de Water, James N. Simone, D. Hatton, Christine Davies, Elvira Gamiz, Shuhei Yamamoto, Paul B. Mackenzie, Carleton DeTar, Craig McNeile, T. Primer, Andreas S. Kronfeld, Jack Laiho, Yuzhi Liu
Publikováno v:
Proceedings of 37th International Symposium on Lattice Field Theory — PoS(LATTICE2019).
We present an update on the ongoing calculations by the Fermilab Lattice, HPQCD, and MILC Collaboration of the leading-order (in electromagnetism) hadronic vacuum polarization contribution to the anomalous magnetic moment of the muon. Our project emp
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