Zobrazeno 1 - 10
of 341
pro vyhledávání: '"Maltman Kim"'
Autor:
Benton, Genessa, Boito, Diogo, Golterman, Maarten, Keshavarzi, Alexander, Maltman, Kim, Peris, Santiago
A key issue affecting the attempt to reduce the uncertainty on the Standard Model prediction for the muon anomalous magnetic moment is the current discrepancy between lattice-QCD and data-driven results for the hadronic vacuum polarization. Progress
Externí odkaz:
http://arxiv.org/abs/2411.06637
Autor:
Boito Diogo, Golterman Maarten, Maltman Kim, Peris Santiago, Rodrigues Marcus V., Schaaf Wilder
Publikováno v:
EPJ Web of Conferences, Vol 274, p 03014 (2022)
After discussing difficulties in determining αs from tau decay due to the existence of Duality Violations and the associated asymptotic nature of the OPE, we describe a new determination based on an improved vector isovector spectral function, now b
Externí odkaz:
https://doaj.org/article/765344334f454582bb065faa9344fd85
Quark-hadron duality and the determination of $\alpha_s$ from hadronic $\tau$ decay: facts vs. myths
Non-perturbative effects have a small but non-trivial impact on the determination of the strong coupling from hadronic $\tau$ decay data. Several approaches have been proposed to take these into account, the two most important of which are the ``trun
Externí odkaz:
http://arxiv.org/abs/2402.05588
Autor:
Benton, Genessa, Boito, Diogo, Golterman, Maarten, Keshavarzi, Alex, Maltman, Kim, Peris, Santiago
A number of discrepancies have emerged between lattice computations and data-driven dispersive evaluations of the RBC/UKQCD Intermediate-window-hadronic contribution to the muon anomalous magnetic moment. It is therefore interesting to obtain data-dr
Externí odkaz:
http://arxiv.org/abs/2311.09523
Autor:
Benton, Genessa, Boito, Diogo, Golterman, Maarten, Keshavarzi, Alex, Maltman, Kim, Peris, Santiago
We present the first data-driven result for $a_\mu^{\rm win,lqc}$, the isospin-limit light-quark connected component of the intermediate-window Hadronic-Vacuum-Polarization contribution to the muon anomalous magnetic moment. Our result, $(198.8\pm 1.
Externí odkaz:
http://arxiv.org/abs/2306.16808
Using standard mathematical methods for asymptotic series and the large-$\beta_0$ approximation, we define a Minimum Distance between the Fixed-Order perturbative series and the Contour-Improved perturbative series in the strong coupling $\alpha_s$ f
Externí odkaz:
http://arxiv.org/abs/2305.10386
Publikováno v:
EPJ Web of Conferences, Vol 202, p 06013 (2019)
We investigate the possibility of qq'Q¯Q¯′$ \bar {Q}\bar {Q}' $ tetraquark bound states using nf = 2 + 1 lattice QCD with pion masses ≃ 164, 299 and 415 MeV. Two types of lattice interpolating operator are chosen, reflecting first diquarkantidi
Externí odkaz:
https://doaj.org/article/e5bd88ae6d21489d8fdf8409f248c086
Autor:
Boyle Peter, Hudspith Renwick James, Izubuchi Taku, Jüttner Andreas, Lehner Christoph, Lewis Randy, Maltman Kim, Ohki Hiroshi, Portelli Antonin, Spraggs Matthew
Publikováno v:
EPJ Web of Conferences, Vol 175, p 13011 (2018)
We propose and apply a novel approach to determining |Vus| which uses inclusive strange hadronic tau decay data and hadronic vacuum polarization functions (HVPs) computed on the lattice. The experimental and lattice data are related through dispersio
Externí odkaz:
https://doaj.org/article/c7cbba73768c4b7b9c4ae4028f2b7354
Publikováno v:
EPJ Web of Conferences, Vol 175, p 05023 (2018)
We report on our progress in studying exotic, heavy tetraquark states, qq′ Q̅Q̅′. Using publicly available dynamical nf = 2 + 1 Wilson-Clover gauge configurations, generated by the PACS-CS collaboration, with pion masses ≃ 164, 299 and 415 Me
Externí odkaz:
https://doaj.org/article/759714d6744149f49375a98f721b456c
Publikováno v:
EPJ Web of Conferences, Vol 175, p 10006 (2018)
We present our result for the strong coupling constant computed from the u-d vector Hadronic Vacuum Polarisation function. We use nf = 2 + 1 flavours of Domain Wall fermions at 3 lattice spacings, generated by the RBC-UKQCD collaboration. We identify
Externí odkaz:
https://doaj.org/article/410473cce30b45a0b132051a1555a9e1