We review lattice results related to pion, kaon, D- and B-meson physics with the aim of making them easily accessible to the particle-physics community. More specifically, we report on the determination of the light-quark masses, the form factor f+(0) , arising in the semileptonic K->pi transition at zero momentum transfer, as well as the decay constant ratio fK/ fpi and its consequences for the CKM matrix elements Vus and Vud. Furthermore, we describe the results obtained on the lattice for some of the low-energy constants of SU(2)L x SU(2)R and SU(3)L x SU(3)R Chiral Perturbation Theory. We review the determination of the BKparameter of neutral kaon mixing as well as the additional four B parameters that arise in theories of physics beyond the Standard Model. The latter quantities are an addition compared to the previous review. For the heavy-quark sector, we provide results for mcand mb(also new compared to the previous review), as well as those for D- and B-meson-decay constants, form factors, and mixing parameters. These are the heavy-quark quantities most relevant for the determination of CKM matrix elements and the global CKM unitarity-triangle fit. Finally, we review the status of lattice determinations of the strong coupling constant alpha_s.
Aoki, S., Aoki, Y., Bečirević, D., Bernard, C., Blum, T., Colangelo, G., et al. (2017). Review of lattice results concerning low-energy particle physics: Flavour Lattice Averaging Group (FLAG). THE EUROPEAN PHYSICAL JOURNAL. C, PARTICLES AND FIELDS, 77(2), 112 [10.1140/epjc/s10052-016-4509-7].
Review of lattice results concerning low-energy particle physics: Flavour Lattice Averaging Group (FLAG)
Lubicz, V.;Simula, S.;
2017-01-01
Abstract
We review lattice results related to pion, kaon, D- and B-meson physics with the aim of making them easily accessible to the particle-physics community. More specifically, we report on the determination of the light-quark masses, the form factor f+(0) , arising in the semileptonic K->pi transition at zero momentum transfer, as well as the decay constant ratio fK/ fpi and its consequences for the CKM matrix elements Vus and Vud. Furthermore, we describe the results obtained on the lattice for some of the low-energy constants of SU(2)L x SU(2)R and SU(3)L x SU(3)R Chiral Perturbation Theory. We review the determination of the BKparameter of neutral kaon mixing as well as the additional four B parameters that arise in theories of physics beyond the Standard Model. The latter quantities are an addition compared to the previous review. For the heavy-quark sector, we provide results for mcand mb(also new compared to the previous review), as well as those for D- and B-meson-decay constants, form factors, and mixing parameters. These are the heavy-quark quantities most relevant for the determination of CKM matrix elements and the global CKM unitarity-triangle fit. Finally, we review the status of lattice determinations of the strong coupling constant alpha_s.I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
