Eur. Phys. J. A (2012) 48: 2
https://doi.org/10.1140/epja/i2012-12002-1

Regular Article - Theoretical Physics

Light cone QCD sum rules study of the semileptonic heavy Ξ_Q and Ξ′_Q transitions to Ξ and Σ baryons

¹ Physics Department, Doğuş University, Acıbadem-Kadıköy, 34722, Istanbul, Turkey
² Electrical and Electronics Engineering Department, Atilim University, 06836, Ankara, Turkey
³ Department of Physics, Kocaeli University, 41380, Izmit, Turkey

^* e-mail: kazizi@dogus.edu.tr

Received: 25 September 2011
Revised: 27 November 2011
Accepted: 7 December 2011
Published online: 20 January 2012

Abstract

The semileptonic decays of heavy spin-1/2, Ξ _b(c) and Ξ′ _b(c) baryons to the light spin-1/2, Ξ and Σ baryons are investigated in the framework of light cone QCD sum rules. In particular, using the most general form of the interpolating currents for the heavy baryons as well as the distribution amplitudes of the Ξ and Σ baryons, we calculate all form factors entering the matrix elements of the corresponding effective Hamiltonians in full QCD. Having calculated the responsible form factors, we evaluate the decay rates and branching fractions of the related transitions.