Hints and challenges in heavy flavor physics

Abstract

Heavy flavor physics entered a new era when the Belle II experiment observed its first collision. There are several hints found so far by BaBar, Belle, and LHCb in particular, that suggest the physics beyond the Standard Model appearing in the loop processes at short distances. They will be further tested by higher precision experiments in the coming years, while the role of lattice QCD is to understand the long-distance physics quantitatively so that one can unambiguously isolate the short-distance physics from the experimental data. I summarize the status towards this goal and then look at the challenges we are facing.

20 pages, 4 figures, talk presented at the 36th Annual International Symposium on Lattice Field Theory - LATTICE2018, 22-28 July, 2018, Michigan State University, East Lansing, Michigan, USA

References in corpus (45)

• Averages of $b$-hadron, $c$-hadron, and $\tau$-lepton properties as of summer 2016
• Improved Nonrelativistic QCD for Heavy Quark Physics
• Highly Improved Staggered Quarks on the Lattice, with Applications to Charm Physics
• Angular analysis of the $B^0\to K^{\ast 0}{\mu }^{+}{\mu }^{-}$ decay using $3\,\mbox{fb}^{-1}$ of integrated luminosity
• Inclusive Semileptonic B and Polarized Lambda_b Decays from QCD
• Massive Fermions in Lattice Gauge Theory
• Differential Distributions in Semileptonic Decays of the Heavy Flavors in QCD
• Charm and Bottom Quark Masses: an Update
• $B\to Dl\nu$ Form Factors at Non-Zero Recoil and Extraction of $|V_{cb}|$
• Nucleon structure functions from lattice operator product expansion
• A fresh look at the determination of |V_cb| from B-> D^* l nu
• High-precision quark masses and QCD coupling from $n_f=4$ lattice QCD
• $|V_{ub}|$ from $B\to \pi \ell \nu$ decays and (2+1)-flavor lattice QCD
• B-meson decay constants from improved lattice NRQCD and physical u, d, s and c sea quarks
• Update of $|V_{cb}|$ from the $\bar{B}\to D^{\ast }\ell \bar{\nu }$ form factor at zero recoil with three-flavor lattice QCD
• Model-Independent Extraction of |V_{cb}| Using Dispersion Relations
• The B and B_s Meson Decay Constants from Lattice QCD
• First lattice calculation of the QED corrections to leptonic decay rates
• QED Corrections to Hadronic Processes in Lattice QCD
• Axial Vector Form Factors of the Nucleon from Lattice QCD
• Lattice QCD calculation of $\bar{B}\to Dl\bar{\nu }$ decay form factors at zero recoil
• Non-perturbative Heavy Quark Effective Theory
• From deep inelastic scattering to heavy-flavor semi-leptonic decays: Total rates into multi-hadron final states from lattice QCD
• Model-Independent Extraction of $|V_{cb}|$ from $\bar{B}\to D^{\ast }\ell \overline{\nu }$
• Phenomenology of semileptonic B-meson decays with form factors from lattice QCD
• Finite-Volume QED Corrections to Decay Amplitudes in Lattice QCD
• Lattice QCD calculation of the $B_{(s)}\to D_{(s)}^{\ast }\ell \nu$ form factors at zero recoil and implications for $|V_{cb}|$
• Emerging understanding of the ΔI = 1/2 Rule from Lattice QCD
• Lattice calculation of the zero-recoil form factor of anti-B --> D* lepton anti-neutrino: toward a model independent determination of |V(cb)|
• Short-distance charmonium correlator on the lattice with Möbius domain-wall fermion and a determination of charm quark mass
• Neutral $B$ meson mixings and $B$ meson decay constants with static heavy and domain-wall light quarks
• B-meson decay constants from 2+1-flavor lattice QCD with domain-wall light quarks and relativistic heavy quarks
• Tensions and correlations in $|V_{cb}|$ determinations
• HQET at order 1/m: I. Non-perturbative parameters in the quenched approximation
• Prospects for a lattice computation of rare kaon decay amplitudes II $K\to \pi \nu \bar{\nu }$ decays
• First exploratory calculation of the long-distance contributions to the rare kaon decays $K\to \pi {\ell }^{+}{\ell }^{-}$
• Nucleon-pion-state contribution in lattice calculations of the nucleon charges $g_A,g_T$ and $g_S$
• Quark masses and strong coupling constant in 2+1 flavor QCD
• HQET at order $1/m$: II. Spectroscopy in the quenched approximation
• Tensor form factor of $D\to \pi (K)\ell \nu$ and $D\to \pi (K)\ell \ell$ decays with $N_f=2+1+1$ twisted-mass fermions
• Computation of the Heavy-Light Decay Constant using Non-relativistic Lattice QCD
• Weak decays of Heavy mesons
• Multi-hadron-state contamination in nucleon observables from chiral perturbation theory
• Three-particle $N\pi \pi$ state contribution to the nucleon two-point function in lattice QCD
• Nucleon-pion-state contamination in lattice calculations of the axial form factors of the nucleon