More about excited bottomonium radiative decays

Abstract

Radiative decays of bottomonium are revisited, focusing on contributions from higher-order relativistic effects. The leading relativistic correction to the magnetic spin-flip operator at the photon vertex is found to be particularly important. The combination of O(v^6) effects in the nonrelativistic QCD action and in the transition operator moves previous lattice results for excited Upsilon decays into agreement with experiment.

4 pages, 3 figures, published version

References in corpus (12)

• Improved Nonrelativistic QCD for Heavy Quark Physics
• 2+1 Flavor Lattice QCD toward the Physical Point
• Constrained Curve Fitting
• Observation of the bottomonium ground state in the decay Upsilon(3S) -> gamma eta_b
• Precision Upsilon Spectroscopy from Nonrelativistic Lattice QCD
• Precise determination of the lattice spacing in full lattice QCD
• Model-independent Study of Magnetic Dipole Transitions in Quarkonium
• Evidence for the eta_b(1S) Meson in Radiative Upsilon(2S) Decay
• Bottomonium spectrum at order v^6 from domain-wall lattice QCD: precise results for hyperfine splittings
• Observation of eta_b(2S) in Upsilon(2S) -> gamma eta_b(2S), eta_b(2S) -> hadrons, and Confirmation of eta_b(1S)
• Excited Upsilon Radiative Decays
• Leptonic widths of heavy quarkonia: S-Wave QCD/NRQCD matching coefficients for the electromagnetic vector annihilation current at O(alpha_s v^2)

Cited by in corpus (9)

• QCD and strongly coupled gauge theories: challenges and perspectives
• Bottomonium Mesons and Strategies for Their Observation
• Improved determination of Heavy Quarkonium magnetic dipole transitions in pNRQCD
• Radiative transitions between $0^{-+}$ and $1^{--}$ heavy quarkonia on the light front
• Hindered M1 Radiative Decay of ${\rm Y}(2S)$ from Lattice NRQCD
• Self-consistent $M1$ radiative transitions of excited $B_c$ and heavy quarkonia with different polarizations in the light-front quark model
• Hindered magnetic dipole transitions between P-wave bottomonia and coupled-channel effects
• Relativistic two-body calculation of $b\bar{b}$-mesons radiative decays
• The Beauty of Lattice Perturbation Theory: The Role of Lattice Perturbation Theory in B Physics