Salvato in:
| Autori principali: | , , , , , , , , , , , , , , , , , , , , , , , |
|---|---|
| Natura: | Preprint |
| Pubblicazione: |
2024
|
| Soggetti: | |
| Accesso online: | https://arxiv.org/abs/2411.09656 |
| Tags: |
Aggiungi Tag
Nessun Tag, puoi essere il primo ad aggiungerne!!
|
| _version_ | 1866915288119771136 |
|---|---|
| author | 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 |
| author_facet | 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 |
| contents | We present complete results for the hadronic vacuum polarization (HVP) contribution to the muon anomalous magnetic moment $a_μ$ in the short- and intermediate-distance window regions, which account for roughly 10% and 35% of the total HVP contribution to $a_μ$, respectively. In particular, we perform lattice-QCD calculations for the isospin-symmetric connected and disconnected contributions, as well as corrections due to strong isospin-breaking. For the short-distance window observables, we investigate the so-called log-enhancement effects as well as the significant oscillations associated with staggered quarks in this region. For the dominant, isospin-symmetric light-quark connected contribution, we obtain $a^{ll,\,{\mathrm{SD}}}_μ(\mathrm{conn.}) = 48.139(11)_{\mathrm{stat}}(91)_{\mathrm{syst}}[92]_{\mathrm{total}} \times 10^{-10}$ and $a^{ll,\,{\mathrm{W}}}_μ(\mathrm{conn.}) = 206.90(14)_{\mathrm{stat}}(61)_{\mathrm{syst}}[63]_{\mathrm{total}} \times 10^{-10}$. We use Bayesian model averaging to fully estimate the covariance matrix between the individual contributions. Our determinations of the complete window contributions are $a^{\mathrm{SD}}_μ = 69.05(1)_{\mathrm{stat}}(21)_{\mathrm{syst}}[21]_{\mathrm{total}} \times 10^{-10}$ and $a^{\mathrm{W}}_μ = 236.45(17)_{\mathrm{stat}}(83)_{\mathrm{syst}}[85]_{\mathrm{total}} \times 10^{-10}$. This work is part of our ongoing effort to compute all contributions to HVP with an overall uncertainty at the few permille level. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2411_09656 |
| institution | arXiv |
| publishDate | 2024 |
| record_format | arxiv |
| spellingShingle | Hadronic vacuum polarization for the muon $g-2$ from lattice QCD: Complete short and intermediate windows 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 High Energy Physics - Lattice High Energy Physics - Experiment High Energy Physics - Phenomenology We present complete results for the hadronic vacuum polarization (HVP) contribution to the muon anomalous magnetic moment $a_μ$ in the short- and intermediate-distance window regions, which account for roughly 10% and 35% of the total HVP contribution to $a_μ$, respectively. In particular, we perform lattice-QCD calculations for the isospin-symmetric connected and disconnected contributions, as well as corrections due to strong isospin-breaking. For the short-distance window observables, we investigate the so-called log-enhancement effects as well as the significant oscillations associated with staggered quarks in this region. For the dominant, isospin-symmetric light-quark connected contribution, we obtain $a^{ll,\,{\mathrm{SD}}}_μ(\mathrm{conn.}) = 48.139(11)_{\mathrm{stat}}(91)_{\mathrm{syst}}[92]_{\mathrm{total}} \times 10^{-10}$ and $a^{ll,\,{\mathrm{W}}}_μ(\mathrm{conn.}) = 206.90(14)_{\mathrm{stat}}(61)_{\mathrm{syst}}[63]_{\mathrm{total}} \times 10^{-10}$. We use Bayesian model averaging to fully estimate the covariance matrix between the individual contributions. Our determinations of the complete window contributions are $a^{\mathrm{SD}}_μ = 69.05(1)_{\mathrm{stat}}(21)_{\mathrm{syst}}[21]_{\mathrm{total}} \times 10^{-10}$ and $a^{\mathrm{W}}_μ = 236.45(17)_{\mathrm{stat}}(83)_{\mathrm{syst}}[85]_{\mathrm{total}} \times 10^{-10}$. This work is part of our ongoing effort to compute all contributions to HVP with an overall uncertainty at the few permille level. |
| title | Hadronic vacuum polarization for the muon $g-2$ from lattice QCD: Complete short and intermediate windows |
| topic | High Energy Physics - Lattice High Energy Physics - Experiment High Energy Physics - Phenomenology |
| url | https://arxiv.org/abs/2411.09656 |