Zobrazeno 1 - 10
of 236
pro vyhledávání: '"Peris Santiago"'
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 175, p 06010 (2018)
One of the systematic errors in some of the current lattice computations of the HVP contribution to the muon anomalous magnetic moment g – 2 is that associated with the extrapolation to the physical pion mass. We investigate this extrapolation assu
Externí odkaz:
https://doaj.org/article/658ca335678849ef818b536888abdb42
We present new results for the light-quark connected part of the leading order hadronic-vacuum-polarization (HVP) contribution to the muon anomalous magnetic moment, using $2+1+1$ staggered fermions. We have collected more statistics on previous ense
Externí odkaz:
http://arxiv.org/abs/2211.12057
We describe how recent determinations of exclusive-mode contributions to $a_\mu^{\rm LO,HVP}$, the leading-order hadronic vacuum polarization contribution to the anomalous magnetic moment of the muon, can be used to provide, up to small electromagnet
Externí odkaz:
http://arxiv.org/abs/2211.11055
We develop a number of sum rules comparing spectral integrals involving judiciously chosen weights to integrals over the corresponding Euclidean two-point function. The applications we have in mind are to the hadronic vacuum polarization that determi
Externí odkaz:
http://arxiv.org/abs/2210.13677