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First moment of the flavour octet nucleon parton distribution function using lattice QCD

Autor: Alexandrou, C., Constantinou, M., Dinter, S., Drach, V., Hadjiyiannakou, K., Jansen, K., Koutsou, G., Vaquero, A.

We perform a lattice computation of the flavour octet contribution to the average quark momentum in a nucleon, $\la x\ra^{(8)}_{\mu^2 = 4 \gev^2}$. In particular, we fully take the disconnected contributions into account in our analysis for which we

Externí odkaz: http://arxiv.org/abs/1501.03734

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Nucleon form factors and moments of generalized parton distributions using $N_f=2+1+1$ twisted mass fermions

Autor: Alexandrou, C., Constantinou, M., Dinter, S., Drach, V., Jansen, K., Kallidonis, C., Koutsou, G.

We present results on the axial and the electromagnetic form factors of the nucleon, as well as, on the first moments of the nucleon generalized parton distributions using maximally twisted mass fermions. We analyze two N_f=2+1+1 ensembles having pio

Externí odkaz: http://arxiv.org/abs/1303.5979

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Sigma terms and strangeness content of the nucleon with $Nf=2+1+1$ twisted mass fermions

Autor: Alexandrou, C., Constantinou, M., Dinter, S., Drach, V., Hadjiyiannakou, K., Jansen, K., Koutsou, G., Strelchenko, A., Vaquero, A.

We investigate excited state contaminations in a direct computation of the nucleon $\sigma$-terms. This is an important source of systematic effects that needs to be controlled besides the light quark mass dependence and lattice artefacts. We use max

Externí odkaz: http://arxiv.org/abs/1211.4447

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Nucleon scalar matrix elements with $N_f=2+1+1$ twisted mass fermions

Autor: Dinter, S., Drach, V., Jansen, K.

We investigate scalar matrix elements of the nucleon using $N_f=2+1+1$ flavors of maximally twisted mass fermions at a fixed value of the lattice spacing of $a\approx 0.078{\rm fm}$. We compute disconnected contributions to the relevant three-point f

Externí odkaz: http://arxiv.org/abs/1111.4857

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Akademický článek

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Akademický článek

Tento výsledek nelze pro nepřihlášené uživatele zobrazit.
K zobrazení výsledku je třeba se přihlásit.

First moment of the flavour octet nucleon parton distribution function using lattice QCD

Autor: Alexandrou, Constantia, Constantinou, Martha, Dinter, S., Drach, V., Hadjiyiannakou, Kyriakos, Jansen, K., Koutsou, Giannis, Vaquero, A.

Publikováno v: Journal of High Energy Physics
J.High Energy Phys.
Journal of high energy physics 2015(6), 68 (2015). doi:10.1007/JHEP06(2015)068
Alexandrou, C, Constantinou, M, Dinter, S, Drach, V, Hadjiyiannakou, K, Jansen, K, Koutsou, G & Vaquero, A 2015, ' First moment of the flavour octet nucleon parton distribution function using lattice QCD ', Journal of High Energy Physics, no. 6, 68 . https://doi.org/10.1007/JHEP06(2015)068

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::199a8a4de4bda261ec793736326addaf
http://www.openaccessrepository.it/record/11010

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Strangeness of the nucleon from lattice QCD

Autor: Alexandrou, Constantia, Constantinou, Martha, Dinter, S., Drach, V., Hadjiyiannakou, Kyriakos, Jansen, K., Koutsou, Giannis, Vaquero, A.

Publikováno v: Alexandrou, C, Constantinou, M, Dinter, S, Drach, V, Hadjiyiannakou, K, Jansen, K, Koutsou, G, Vaquero, A & Collaboration, E T M 2015, ' Strangeness of the nucleon from lattice QCD ', Physical Review D, vol. 91, no. 9, 094503 . https://doi.org/10.1103/PhysRevD.91.094503
Physical review / D 91(9), 094503 (2015). doi:10.1103/PhysRevD.91.094503
Physical Review D-Particles, Fields, Gravitation and Cosmology
Phys Rev D Part Fields Gravit Cosmol

We present a nonperturbative calculation of the strangeness of the nucleon yN within the framework of lattice QCD. This observable is known to be an important cornerstone to interpret results from direct dark matter detection experiments. We perform

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::00309fb2c5a16947c80f2ab31023e004
https://findresearcher.sdu.dk:8443/ws/files/129112154/Strangeness_of_the_nucleon_from_lattice_QCD.pdf

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