Zobrazeno 1 - 10
of 15
pro vyhledávání: '"Lacagnina, G. N."'
Autor:
Molinari, L. G., Lacagnina, G. N.
Publikováno v:
J. Phys. A: Math. Theor. 42 (2009) 395204 (9pp.)
Eigenvalues and eigenvectors of non-Hermitian tridiagonal periodic random matrices are studied by means of the Hatano-Nelson deformation. The deformed spectrum is annular-shaped, with inner radius measured by the complex Thouless formula. The inner b
Externí odkaz:
http://arxiv.org/abs/0905.2489
Autor:
Al-Haydari, A., Khan, A. Ali, Braun, V. M., Collins, S., Göckeler, M., Lacagnina, G. N., Panero, M., Schäfer, A., Schierholz, G.
Publikováno v:
Eur.Phys.J.A43:107-120,2010
We extract the form factors relevant for semileptonic decays of D and B mesons from a relativistic computation on a fine lattice in the quenched approximation. The lattice spacing is a=0.04 fm (corresponding to a^{-1}=4.97 GeV), which allows us to ru
Externí odkaz:
http://arxiv.org/abs/0903.1664
Autor:
Khan, A. Ali, Al-Haydari, A., Braun, V., Collins, S., Goeckeler, M., Lacagnina, G. N., Panero, M., Schaefer, A., Schierholz, G.
Publikováno v:
PoS Confinement8:167,2008
Results on semileptonic decay matrix elements of heavy-light mesons and charmonium spectrum and decay constant using a fine quenched lattice are presented.
Comment: 2 pages pdf
Comment: 2 pages pdf
Externí odkaz:
http://arxiv.org/abs/0901.0822
Autor:
UKQCD Collaboration, Bowler, K. C., Douglas, G., Kenway, R. D., Lacagnina, G. N., Maynard, C. M.
Publikováno v:
Nucl.Phys.B637:293-310,2002
The form factors for the semi-leptonic B->D and B->D* decays are evaluated in quenched lattice QCD at two different values of the coupling, beta=6.0 and 6.2. The action and the operators are fully O(a) non-perturbatively improved. The slope of the Is
Externí odkaz:
http://arxiv.org/abs/hep-lat/0202029
Autor:
UKQCD collaboration, Lacagnina, G. N.
Publikováno v:
Nucl.Phys.Proc.Suppl. 106 (2002) 373-375
The h+, h_A1 form factors for the semi-leptonic B->D and B->D* decays are evaluated in quenched lattice QCD with beta=6.2. The action and the operators are fully O(a) non-perturbatively improved. The Isgur-Wise function is evaluated and fitted to ext
Externí odkaz:
http://arxiv.org/abs/hep-lat/0109006
Autor:
Bowler, K. C., Del Debbio, L., Flynn, J. M., Lacagnina, G. N., Lesk, V. I., Maynard, C. M., Richards, D. G.
Publikováno v:
Nucl.Phys.B619:507-537,2001
The decay constants of B, D and K mesons are computed in quenched lattice QCD at two different values of the coupling. The action and operators are O(a) improved with non-perturbative coefficients. The results are f_B=195(6)(+24/-23) MeV, f_D=206(4)(
Externí odkaz:
http://arxiv.org/abs/hep-lat/0007020
Autor:
Al-Haydari, A., Ali Khan, A., Braun, V. M., Collins, S., Göckeler, M., Lacagnina, G. N., Panero, M., Schäfer, A., Schierholz, G.
Publikováno v:
The European Physical Journal A, 43 (1)
The European Physical Journal A, 43 (1)
ISSN:1434-6001
ISSN:1434-601X
ISSN:1434-6001
ISSN:1434-601X
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::0f4561464c5aab346a14df47cc961ef3
http://doc.rero.ch/record/314958/files/10050_2009_Article_5297.pdf
http://doc.rero.ch/record/314958/files/10050_2009_Article_5297.pdf
Autor:
Al-Haydari, A., Ali Khan, A., Braun, Vladimir M., Collins, Sara, Göckeler, Meinulf, Lacagnina, G. N., Panero, M., Schäfer, Andreas, Schierholz, Gerrit
We extract the form factors relevant for semileptonic decays of D and B mesons from a relativistic computation on a fine lattice in the quenched approximation. The lattice spacing is a=0.04 fm (corresponding to a^{-1}=4.97 GeV), which allows us to ru
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::ec97fd8dd9467ea8cfbea700453f4027
Autor:
Al-Haydari, A., Khan, A. Ali, Braun, V. M., Collins, S., Göckeler, M., Lacagnina, G. N., Panero, M., Schäfer, A., Schierholz, G.
Publikováno v:
The European physical journal / A A43, 107-120 (2010). doi:10.1140/epja/i2009-10893-3
We extract the form factors relevant for semileptonic decays of D and B mesons from a relativistic computation on a fine lattice in the quenched approximation. The lattice spacing is a=0.04 fm (corresponding to a^{-1}=4.97 GeV), which allows us to ru
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::fa3a1e1e2bf5d11e57b975afa9168639
https://bib-pubdb1.desy.de/record/91259
https://bib-pubdb1.desy.de/record/91259
Autor:
Ali Khan, A., Al-Haydari, A., Braun, V. M., Collins, S., Göckeler, M., Lacagnina, G. N., Marco Panero, Schäfer, A., Schierholz, G.
Publikováno v:
Scopus-Elsevier
We present results for the first two moments of the distribution amplitudes of pseudoscalar mesons. Using two flavors of non-perturbatively improved clover fermions and non-perturbative renormalization of the matrix elements we perform both chiral an
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::13cf577d5e034be84055cd12b0b69f0b
http://arxiv.org/abs/0901.0822
http://arxiv.org/abs/0901.0822