Zobrazeno 1 - 10
of 1 485
pro vyhledávání: '"Lepage G"'
Autor:
Bazavov, Alexei, Clarke, David A., Davies, Christine, DeTar, Carleton, El-Khadra, Aida X., Gámiz, Elvira, Gottlieb, Steven, Grebe, Anthony V., Hostetler, Leon, Jay, William I., Jeong, Hwancheol, Kronfeld, Andreas S., Lahert, Shaun, Laiho, Jack, Lepage, G. Peter, Lynch, Michael, Lytle, Andrew T., McNeile, Craig, Neil, Ethan T., Peterson, Curtis T., Simone, James N., Sitison, Jacob W., Van de Water, Ruth S., Vaquero, Alejandro
We present complete results for the hadronic vacuum polarization (HVP) contribution to the muon anomalous magnetic moment $a_\mu$ in the short- and intermediate-distance window regions, which account for roughly 10% and 35% of the total HVP contribut
Externí odkaz:
http://arxiv.org/abs/2411.09656
We calculate the decay rate for $\eta_b \to \gamma \gamma$ in lattice QCD for the first time, providing a precise prediction for the Belle II experiment. Our calculation includes $u$, $d$, $s$ and $c$ quarks in the sea, using gluon field configuratio
Externí odkaz:
http://arxiv.org/abs/2410.24041
An accurate calculation of the leading-order hadronic vacuum polarisation (LOHVP) contribution to the anomalous magnetic moment of the muon ($a_\mu$) is key to determining whether a discrepancy, suggesting new physics, exists between the Standard Mod
Externí odkaz:
http://arxiv.org/abs/2410.23832
We calculate the decay rates for $\eta_c \to \gamma \gamma$, $J/\psi \to \gamma \eta_c$ and $J/\psi \to \eta_c e^+e^-$ in lattice QCD with $u$, $d$, $s$ and $c$ quarks in the sea for the first time. We improve significantly on previous theory calcula
Externí odkaz:
http://arxiv.org/abs/2305.06231
Autor:
Bazavov, Alexei, Davies, Christine, DeTar, Carleton, El-Khadra, Aida X., Gámiz, Elvira, Gottlieb, Steven, Jay, William I., Jeong, Hwancheol, Kronfeld, Andreas S., Lahert, Shaun, Lepage, G. Peter, Lynch, Michael, Lytle, Andrew T., Mackenzie, Paul B., McNeile, Craig, Neil, Ethan T., Peterson, Curtis T., Ray, Gaurav, Simone, James N., Van de Water, Ruth S., Vaquero, Alejandro
Publikováno v:
Phys. Rev. D 107, 114514 (2023)
We present a lattice-QCD calculation of the light-quark connected contribution to window observables associated with the leading-order hadronic vacuum polarization contribution to the anomalous magnetic moment of the muon, $a_\mu^{\mathrm{HVP,LO}}$.
Externí odkaz:
http://arxiv.org/abs/2301.08274
Autor:
Davies Christine, Harrison Judd, Lepage G Peter, Monahan Christopher, Shigemitsu Junko, Wingate Matthew
Publikováno v:
EPJ Web of Conferences, Vol 175, p 13023 (2018)
We present lattice QCD results for the matrix elements of R2 and other dimension-7, ΔB = 2 operators relevant for calculations of Δs, the Bs - B̅s width difference. We have computed correlation functions using 5 ensembles of the MILC Collaboration
Externí odkaz:
https://doaj.org/article/201d3548c54c47ed945206896d8b4f44
Publikováno v:
EPJ Web of Conferences, Vol 175, p 06015 (2018)
Measurements and theoretical calculations of meson form factors are essential for our understanding of internal hadron structure and QCD, the dynamics that bind the quarks in hadrons. The pion electromagnetic form factor has been measured at small sp
Externí odkaz:
https://doaj.org/article/719e395b98704fb2a74e746ac5492215
Publikováno v:
EPJ Web of Conferences, Vol 175, p 13027 (2018)
he quark flavor sector of the Standard Model is a fertile ground to look for new physics effects through a unitarity test of the Cabbibo-Kobayashi-Maskawa (CKM) matrix. We present a lattice QCD calculation of the scalar and the vector form factors (o
Externí odkaz:
https://doaj.org/article/e318b7725a1a459a92010bdc9caa53bc
Autor:
Davies, C. T. H., DeTar, C., El-Khadra, A. X., Gottlieb, Steven, Hatton, D., Kronfeld, A. S., Lahert, S., Lepage, G. P., McNeile, C., Neil, E. T., Peterson, C. T., Ray, G. S., Van de Water, R. S., Vaquero, A.
An accurate determination of the leading-order hadronic vacuum polarisation (HVP) contribution to the anomalous magnetic moment of the muon is critical to understanding the size and significance of any discrepancy between the Standard Model predictio
Externí odkaz:
http://arxiv.org/abs/2207.04765
The precision of lattice QCD calculations has been steadily improving for some time and is now approaching, or has surpassed, the 1% level for multiple quantities. At this level QED effects, i.e. the fact that quarks carry electric as well as color c
Externí odkaz:
http://arxiv.org/abs/2204.02137