Zobrazeno 1 - 10
of 435
pro vyhledávání: '"Can K"'
Autor:
Crawford, J. A., Can, K. U., Horsley, R., Rakow, P. E. L., Schierholz, G., Stüben, H., Young, R. D., Zanotti, J. M.
Single-spin asymmetries observed in polarised deep-inelastic scattering are important probes of hadron structure. The Sivers asymmetry has been the focus of much attention in QCD phenomenology and is yet to be understood at the quark level. In this L
Externí odkaz:
http://arxiv.org/abs/2408.03621
Autor:
Hannaford-Gunn, A., Can, K. U., Crawford, J. A., Horsley, R., Rakow, P. E. L., Schierholz, G., Stüben, H., Young, R. D., Zanotti, J. M.
We present a determination of the structure functions of the off-forward Compton amplitude $\mathcal{H}_1$ and $\mathcal{E}_1$ from the Feynman-Hellmann method in lattice QCD. At leading twist, these structure functions give access to the generalised
Externí odkaz:
http://arxiv.org/abs/2405.06256
Autor:
Can, K. U., Horsley, R., Nakamura, Y., Rakow, P. E. L., Schierholz, G., Stüben, H., Young, R. D., Zanotti, J. M.
The dominant contribution to the theoretical uncertainty in the extracted weak parameters of the Standard Model comes from the hadronic uncertainties in the electroweak boxes, i.e. $\gamma-W^\pm/Z$ exchange diagrams. A dispersive analysis relates the
Externí odkaz:
http://arxiv.org/abs/2402.00255
Autor:
Can, K. U., Batelaan, M., Hannaford-Gunn, A., Horsley, R., Nakamura, Y., Perlt, H., Rakow, P. E. L., Schierholz, G., Stüben, H., Young, R. D., Zanotti, J. M.
The structure of hadrons relevant for deep-inelastic scattering are completely characterised by the Compton amplitude. A direct calculation of the Compton amplitude in a lattice QCD setup provides a way to accessing the structure functions, circumven
Externí odkaz:
http://arxiv.org/abs/2307.07904
Autor:
Batelaan, M., Can, K. U., Horsley, R., Nakamura, Y., Rakow, P. E. L., Schierholz, G., Stüben, H., Young, R. D., Zanotti, J. M.
Publikováno v:
Phys. Rev D 108, 034507 (2023)
The Feynman--Hellmann approach to computing matrix elements in lattice QCD by first adding a perturbing operator to the action is described using the transition matrix and the Dyson expansion formalism. This perturbs the energies in the two-point bar
Externí odkaz:
http://arxiv.org/abs/2305.05491
Autor:
Batelaan, M., Can, K. U., Horsley, R., Nakamura, Y., Perlt, H., Rakow, P. E. L., Schierholz, G., Stüben, H., Young, R. D., Zanotti, J. M.
Publikováno v:
PoS(LATTICE2022)412
The standard method for determining matrix elements in lattice QCD requires the computation of three-point correlation functions. This has the disadvantage of requiring two large time separations: one between the hadron source and operator and the ot
Externí odkaz:
http://arxiv.org/abs/2302.04911
Autor:
Can, K. Utku
Structure functions are the essential objects for understanding the deep inelastic scattering processes, providing valuable insight into the partonic structure of hadrons. A direct calculation of the Compton amplitude provides a complementary way to
Externí odkaz:
http://arxiv.org/abs/2212.09197
Autor:
Batelaan, M., Can, K. U., Hannaford-Gunn, A., Horsley, R., Nakamura, Y., Perlt, H., Rakow, P. E. L., Schierholz, G., Stüben, H., Young, R. D., Zanotti, J. M.
We present a simultaneous extraction of the moments of $F_2$ and $F_L$ structure functions of the proton for a range of photon virtuality, $Q^2$. This is achieved by computing the forward Compton amplitude on the lattice utilizing the second-order Fe
Externí odkaz:
http://arxiv.org/abs/2209.04141
Autor:
Can, K. U., Hannaford-Gunn, A., Horsley, R., Nakamura, Y., Perlt, H., Rakow, P. E. L., Sankey, E., Schierholz, G., Stüben, H., Young, R. D., Zanotti, J. M.
A major objective of lattice QCD is the computation of hadronic matrix elements. The standard method is to use three-point and four-point correlation functions. An alternative approach, requiring only the computation of two-point correlation function
Externí odkaz:
http://arxiv.org/abs/2201.08367
Autor:
Can, K. U., Horsley, R., Nakamura, Y., Perlt, H., Rakow, P. E. L., Schierholz, G., Stüben, H., Young, R. D., Zanotti, J. M.
Lattice calculations of hadronic observables are aggravated by short-distance fluctuations. The gradient flow, which can be viewed as a particular realisation of the coarse-graining step of momentum space RG transformations, proves a powerful tool fo
Externí odkaz:
http://arxiv.org/abs/2112.06355