Great strides have been made in the understanding of bound states of the bottom quark, b, and its antiquark, (b) over bar, since the discovery of the first Upsilon resonances in 1977. These bound states, known as bottomonium, have a rich spectrum whose masses and transition amplitudes shed valuable light on the strong interactions. We review some recent developments in bottomonium physics, including the discovery of the spin-singlet states eta(b) (1S, 2S) and h(b) (1P, 2P), the first D-wave states, one or more candidates for spin-triplet.XbJ(3P) excitations, and above-threshold states with strong transitions to states below threshold. We also present information about transitions, production, and signatures of new physics.
Patrignani, C., Pedlar, T.K., Rosner, J.L. (2013). Recent Results in Bottomonium. ANNUAL REVIEW OF NUCLEAR AND PARTICLE SCIENCE, 63, 21-44 [10.1146/annurev-nucl-102212-170609].
Recent Results in Bottomonium
PATRIGNANI, CLAUDIA;
2013
Abstract
Great strides have been made in the understanding of bound states of the bottom quark, b, and its antiquark, (b) over bar, since the discovery of the first Upsilon resonances in 1977. These bound states, known as bottomonium, have a rich spectrum whose masses and transition amplitudes shed valuable light on the strong interactions. We review some recent developments in bottomonium physics, including the discovery of the spin-singlet states eta(b) (1S, 2S) and h(b) (1P, 2P), the first D-wave states, one or more candidates for spin-triplet.XbJ(3P) excitations, and above-threshold states with strong transitions to states below threshold. We also present information about transitions, production, and signatures of new physics.I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
