Zobrazeno 1 - 10
of 56
pro vyhledávání: '"Moir, Graham"'
Autor:
Cheung, Gavin K. C., Thomas, Christopher E., Wilson, David J., Moir, Graham, Peardon, Michael, Ryan, Sinéad M.
Publikováno v:
JHEP 02 (2021) 100
Elastic scattering amplitudes for $I=0$ $DK$ and $I=0,1$ $D\bar{K}$ are computed in $S$, $P$ and $D$ partial waves using lattice QCD with light-quark masses corresponding to $m_\pi = 239$ MeV and $m_\pi = 391$ MeV. The $S$-waves contain interesting f
Externí odkaz:
http://arxiv.org/abs/2008.06432
Autor:
Bulava, John, Hörz, Ben, Knechtli, Francesco, Koch, Vanessa, Moir, Graham, Morningstar, Colin, Peardon, Mike
The energy spectrum of a system containing a static quark anti-quark pair is computed for a wide range of source separations using lattice QCD with $N_\mathrm{f}=2+1$ dynamical flavours. By employing a variational method with a basis including operat
Externí odkaz:
http://arxiv.org/abs/1902.04006
Autor:
Koch, Vanessa, Bulava, John, Hörz, Ben, Knechtli, Francesco, Moir, Graham, Morningstar, Colin, Peardon, Mike
The static potential $V(r)$ between a static quark and a static antiquark separated by a distance r is defined as the energy of the ground state of the system. As a consequence of confinement, the energy between the quark-antiquark pair is contained
Externí odkaz:
http://arxiv.org/abs/1811.09289
We study the effective theory of decoupling of a charm quark at low energies. We do this by simulating a model, QCD with two mass-degenerate charm quarks. At leading order the effective theory is a pure gauge theory. By computing ratios of hadronic s
Externí odkaz:
http://arxiv.org/abs/1710.07590
Decoupling of heavy quarks at low energies can be described by means of an effective theory as shown by S. Weinberg in Ref. [1]. We study the decoupling of the charm quark by lattice simulations. We simulate a model, QCD with two degenerate charm qua
Externí odkaz:
http://arxiv.org/abs/1706.04982
Publikováno v:
PoS (Lattice2016) 120
We present preliminary calculations towards radiative transitions in charmonium using anisotropic $N_f = 2 + 1$ dynamical ensembles generated by the Hadron Spectrum Collaboration. With the use of newer technologies we aim to investigate transitions b
Externí odkaz:
http://arxiv.org/abs/1702.00352
We compute and compare the continuum limits of several quantities in QCD with and without a dynamical charm quark. We consider both low energy quantities, like the hadronic scales $r_0$ and $t_0$, and high energy quantities, like the charmonium masse
Externí odkaz:
http://arxiv.org/abs/1612.07634
Autor:
Moir, Graham
State-of-the-art lattice QCD calculations of scattering amplitudes in coupled-channel $D\pi$, $D\eta$ and $D_{s}\bar{K}$ scattering, as well elastic $DK$ scattering are discussed. The methodology employed allows a determination of the relevant poles
Externí odkaz:
http://arxiv.org/abs/1611.05822
Autor:
Knechtli, Francesco, Alberti, Maurizio, Bali, Gunnar S., Collins, Sara, Moir, Graham, Söldner, Wolfgang
Recently the LHCb experiment found evidence for the existence of two exotic resonances consisting of $c\bar{c}uud$ quarks. Among the possible interpretations is the hadro-charmonium model, in which charmonium is bound "within" a light hadron. We test
Externí odkaz:
http://arxiv.org/abs/1611.00912
Autor:
Cheung, Gavin K. C., O'Hara, Cian, Moir, Graham, Peardon, Michael, Ryan, Sinéad M., Thomas, Christopher E., Tims, David
Publikováno v:
JHEP 12 (2016) 089
We present highly-excited charmonium, $D_s$ and $D$ meson spectra from dynamical lattice QCD calculations with light quarks corresponding to $M_{\pi} \sim 240$ MeV and compare these to previous results with $M_{\pi} \sim 400$ MeV. Utilising the disti
Externí odkaz:
http://arxiv.org/abs/1610.01073