The old man and the sea
- Conference date: 15–19 February 2010
- Location: Adelaide (Australia)
While many models describe the proton at some low scale as composed of only valence quarks and glue, experimental data on the flavor dependence of anti‐quark distributions show that this picture cannot be right at any scale. The non‐perturbative origin of the sea remains a critical question in hadron structure. New HERMES measurements of the strangeness content of the proton also suggest an intriguing relation between the non‐perturbative contribution to and Two future measurements of the non‐perturbative nature of the sea appear to be especially important. One, the measurement of the at higher x, will be carried out by the SEAQUEST experiment at FNAL in the next few years. The second, a higher precision measurement of the spin carried by the sea of anti‐quarks, may require a future generation of experiments.
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