The role of hyperfine mixing in $b\to c$ semileptonic decays of doubly-heavy baryons

Details The role of hyperfine mixing in $b\to c$ semileptonic decays of doubly-heavy baryons The role of hyperfine mixing in $b\to c$ semileptonic decays of doubly-heavy baryons

2009-11-06

arxiv.org/abs/0911.1193v1

Physics

High Energy Physics

High Energy Physics - Phenomenology

3 latex pages. Talk given at The 5-th International Conference on Quarks and Nuclear Physics (QNP09), Beijing, September 2009

Scientific paper

We analyze the effects of hyperfine mixing in $b \to c$ semileptonic decays of doubly heavy baryons. We qualitatively confirm the results by W. Roberts and M. Pervin in Int. J. Mod. Phys. A, 2009, {\bf 24}: 2401-2413, finding that mixing has a great impact on those transitions. However, predictions without mixing differ by a factor of 2 and this discrepancy translates to the mixed case where large differences in decay widths are observed between the two calculations.

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