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The decays ${{\rm{\Lambda }}}_{b,c}\, \rightarrow \,{N}^{* }{lv}$ in QCD

Emmerich, M ; Offen, N ; Schäfer, A



Abstract

We present an exploratory study of the Lambda(c,b) -> N*-form factors and the semileptonic decay width within the framework of light-cone sum rules. We use two different methods and two different interpolating currents for the Lambda(c,b). (1) We follow (Khodjamirian et al 2011 J. High Energy Phys. JHEP09(2011) 106) and eliminate negative parity partners of the Lambda(c,b) by taking linear ...

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