Weak decays of doubly heavy baryons: the $$1/2\rightarrow 1/2$$ 1 / 2 → 1 / 2 case
نویسندگان
چکیده
منابع مشابه
Weak Decays of Doubly Heavy Baryons: SU(3) Analysis
Motivated by the recent LHCb observation of doubly-charmed baryon Ξ cc in the Λc K −π+π+ final state, we analyze the weak decays of doubly heavy baryons Ξcc, Ωcc, Ξbc, Ωbc, Ξbb and Ωbb under the flavor SU(3) symmetry. Decay amplitudes for various semileptonic and nonleptonic decays are parametrized in terms of a few SU(3) irreducible amplitudes. We find a number of relations or sum rules betwee...
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In the heavy quark limit a heavy baryon which contains two heavy quarks is believed to be composed of a heavy diquark and a light quark. Based on this picture, we evaluate the weak semileptonic decay rates of such baryons. The transition form factors between two heavy baryons are associated with those between two heavy mesons by applying the super avor symmetry. The e ective vertices of the W-b...
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We find expressions for the weak decay amplitudes of baryons containing two b quarks (or one b and one c quark – many relationship are the same) in terms of unknown reduced matrix elements. This project was originally motivated by the request of the FNAL Run II b Physics Workshop organizers for a guide to experimentalists in their search for as yet unobserved hadrons. We include an analysis of ...
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In this paper we give a short review of the recently obtained results on inclusive and exclusive decays of doubly heavy baryons.
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Bethe-Salpeter approach has been applied to the study of b → c transitions both for heavy mesons and heavy baryons. Meson and baryon IW functions are calculated on the equal footing. A reasonable agreement with the experimental data for heavy to heavy semileptonic transitions has been obtained. The remarkable progress in the Heavy Quark Effective Theory (HQET) 1 still leaves a large room for th...
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ژورنال
عنوان ژورنال: The European Physical Journal C
سال: 2017
ISSN: 1434-6044,1434-6052
DOI: 10.1140/epjc/s10052-017-5360-1