A first estimate of triply heavy baryon masses from the pNRQCD perturbative static potential
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2012
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Springer
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Abstract
Within pNRQCD we compute the masses of spin-averaged triply heavy baryons using the now-available NNLO pNRQCD potentials and three-body variational approach. We focus in particular on the role of the purely three-body interaction in perturbation theory. This we find to be reasonably small and of the order 25 MeV. Our prediction for the Omega(ccc) baryon mass is 4900(250) MeV in keeping with other approaches. We propose to search for this hitherto unobserved state at B factories by examining the end point of the recoil spectrum against triple charm.
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© Springer-Verlag.
Financial support by grants FPA2011-27853-01, FIS2008-01323 plus 227431, Hadron-Physics2 (EU) and PR34-1856-BSCH, UCM-BSCH GR58/08, 910309, PR34/07-15875, SB2010-0012. We thankfully acknowledge the computer resources, technical expertise and assistance provided by the CeSViMa and the Spanish Supercomputing Network. FJLE is a recipient of a Caja Madrid fellowship and thanks the hospitality of the TU-Munich theoretical physics group and especially Nora Brambilla and Antonio Vairo, who have been influential in several aspects of this work.