Hyperfine mixing in b -> c semileptonic decay of doubly heavy baryons
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Hyperfine mixing in b -> c semileptonic decay of doubly heavy baryons

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Hyperfine mixing in b -> c semileptonic decay of doubly heavy baryons

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Albertus, Conrado; Hernández Gajate, Eliecer; Nieves Pamplona, Juan Miguel
Aquest document és un/a article, creat/da en: 2010
We qualitatively corroborate the results of [W. Roberts, M. Pervin, Int. J. Mod. Phys. A 24 (2009) 2401] according to which hyperfine mixing greatly affects the decay widths of b -> c semileptonic decays involving doubly heavy bc baryons. However, our predictions for the decay widths of the unmixed states differ from those reported in the work of Roberts and Pervin by a factor of 2, and this discrepancy translates to the mixed case. We further show that the predictions of heavy quark spin symmetry, might be used in the future to experimentally extract information on the admixtures in the actual physical bc baryons, in a model independent manner.

    Albertus, Conrado Hernández Gajate, Eliecer Nieves Pamplona, Juan Miguel 2010 Hyperfine mixing in b -> c semileptonic decay of doubly heavy baryons Physics Letters B 683 1 21 25
http://dx.doi.org/10.1016/j.physletb.2009.11.048
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