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Weak decays of doubly heavy hadrons

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Weak decays of doubly heavy hadrons

dc.contributor.author	Sanchis Lozano, Miguel Ángel
dc.date.accessioned	2015-05-21T11:23:48Z
dc.date.available	2015-05-21T11:23:48Z
dc.date.issued	1995
dc.identifier.uri	http://hdl.handle.net/10550/43908
dc.description.abstract	We explore the application and usefulness of the heavy quark symmetry to describe the weak decays of hadrons (mesons and baryons) containing two heavy quarks. Firstly, we address the internal dynamics of a heavy-heavy bound system with the help of estimates based on potential models, showing an approximate spin symmetry in the preasymptotic quark mass region including charmonium, bottonium and Bc meson states. However, no asymptotic spin symmetry should hold in the infinite quark mass limit in contrast to singly heavy hadrons. Predictions on semileptonic and two-body nonleptonic decays of Bc mesons are shown. Furthermore, the stemming flavor and spin symmetries from the interaction between the heavy and light components in hadrons (combining in a $\lq\lq$superflavor' symmetry) permit their classification in meson-type supermultiplets containing singly heavy mesons together with doubly heavy baryons, and baryon-type supermultiplets containing singly heavy baryons together with some exotic doubly heavy multiquark states (diquonia). Exploiting their well-defined transformation properties under the superflavor symmetry group, we get predictions on the widths for some semileptonic and two-body nonleptonic decays of baryons containing both b and c quarks.
dc.language.iso	eng
dc.relation.ispartof	Nuclear Physics B, 1995, vol. 440, num. 1-2, p. 251-275
dc.rights.uri	info:eu-repo/semantics/openAccess
dc.source	Sanchis Lozano, Miguel Ángel 1995 Weak decays of doubly heavy hadrons Nuclear Physics B 440 1-2 251 275
dc.subject	Física
dc.title	Weak decays of doubly heavy hadrons
dc.type	info:eu-repo/semantics/article
dc.date.updated	2015-05-21T11:23:49Z
dc.identifier.doi	http://dx.doi.org/10.1016/0550-3213(95)00064-Y
dc.identifier.idgrec	091223