Zobrazeno 1 - 10
of 732
pro vyhledávání: '"Pleiter, D."'
Autor:
Smail, R. E., Batelaan, M., Horsley, R., Nakamura, Y., Perlt, H., Pleiter, D., Rakow, P. E. L., Schierholz, G., Stüben, H., Young, R. D., Zanotti, J. M.
At the TeV scale, low-energy precision observations of neutron characteristics provide unique probes of novel physics. Precision studies of neutron decay observables are susceptible to beyond the Standard Model (BSM) tensor and scalar interactions, w
Externí odkaz:
http://arxiv.org/abs/2304.02866
Autor:
Batelaan, M., Horsley, R., Nakamura, Y., Perlt, H., Pleiter, D., Rakow, P. E. L., Schierholz, G., Stüben, H., Young, R. D., Zanotti, J. M.
Lattice QCD calculations of the nucleon electromagnetic form factors are of interest at both the high and low momentum transfer regions. For high momentum transfers especially there are open questions which require more intense study, such as the pot
Externí odkaz:
http://arxiv.org/abs/2202.01366
Autor:
De La Motte, S. A., Hollitt, S. E., Horsley, R., Jackson, P. D., Nakamura, Y., Perlt, H., Pleiter, D., Rakow, P. E. L., Schierholz, G., Stüben, H., Young, R. D., Zanotti, J. M.
We present updates from QCDSF/UKQCD/CSSM on the $SU(3)_f$ breaking in $B$ meson decay constants. The $b$-quarks are generated with an anisotropic clover-improved action, and are tuned to match properties of the physical $B$ and $B^*$ mesons. Configur
Externí odkaz:
http://arxiv.org/abs/2201.10779
Autor:
Smail, R. E., Horsley, R., Nakamura, Y., Perlt, H., Pleiter, D., Rakow, P. E. L., Schierholz, G., Stüben, H., Young, R. D., Zanotti, J. M.
The nucleon tensor charge, $g_T$, is an important quantity in the search for beyond the Standard Model tensor interactions in neutron and nuclear $\beta$-decays as well as the contribution of the quark electric dipole moment (EDM) to the neutron EDM.
Externí odkaz:
http://arxiv.org/abs/2112.05330
Autor:
Bickerton, J. M., Cooke, A. N., Horsley, R., Nakamura, Y., Perlt, H., Pleiter, D., Rakow, P. E. L., Schierholz, G., Stüben, H., Young, R. D., Zanotti, J. M.
Using an SU(3)-flavour symmetry breaking expansion between the strange and light quark masses, we determine how this constrains the extrapolation of baryon octet matrix elements and form factors. In particular we can construct certain combinations, w
Externí odkaz:
http://arxiv.org/abs/2112.04445
Autor:
Bickerton, J. M., Horsley, R., Nakamura, Y., Perlt, H., Pleiter, D., Rakow, P. E. L., Schierholz, G., Stüben, H., Young, R. D., Zanotti, J. M.
Publikováno v:
Phys. Rev. D 100, 114516 (2019)
By considering a flavour expansion about the SU(3)-flavour symmetric point, we investigate how flavour-blindness constrains octet baryon matrix elements after SU(3) is broken by the mass difference between quarks. Similarly to hadron masses we find t
Externí odkaz:
http://arxiv.org/abs/1909.02521
Autor:
Horsley, R., Koumi, Z., Nakamura, Y., Perlt, H., Pleiter, D., Rakow, P. E. L., Schierholz, G., Schiller, A., Stüben, H., Young, R. D., Zanotti, J. M.
We report a new analysis of the isospin splittings within the decuplet baryon spectrum. Our numerical results are based upon five ensembles of dynamical QCD+QED lattices. The analysis is carried out within a flavour-breaking expansion which encodes t
Externí odkaz:
http://arxiv.org/abs/1904.02304
Autor:
Horsley, R., Nakamura, Y., Perlt, H., Pleiter, D., Rakow, P. E. L., Schierholz, G., Schiller, A., Stüben, H., Young, R. D., Zanotti, J. M.
Quark line disconnected matrix elements of an operator, such as the axial current, are difficult to compute on the lattice. The standard method uses a stochastic estimator of the operator, which is generally very noisy. We discuss and develop further
Externí odkaz:
http://arxiv.org/abs/1901.04792
Autor:
Chambers, A. J., Dragos, J., Horsley, R., Nakamura, Y., Perlt, H., Pleiter, D., Rakow, P. E. L., Schierholz, G., Schiller, A., Somfleth, K., Stüben, H., Young, R. D., Zanotti, J.
Publikováno v:
Phys. Rev. D 96, 114509 (2017)
Accessing hadronic form factors at large momentum transfers has traditionally presented a challenge for lattice QCD simulations. Here we demonstrate how a novel implementation of the Feynman-Hellmann method can be employed to calculate hadronic form
Externí odkaz:
http://arxiv.org/abs/1702.01513
Autor:
Bornyakov, V. G., Horsley, R., Nakamura, Y., Perlt, H., Pleiter, D., Rakow, P. E. L., Schierholz, G., Schiller, A., Stüben, H., Zanotti, J. M.
The SU(3) flavour symmetry breaking expansion in up, down and strange quark masses is extended from hadron masses to meson decay constants. This allows a determination of the ratio of kaon to pion decay constants in QCD. Furthermore when using partia
Externí odkaz:
http://arxiv.org/abs/1612.04798