CERN Accelerating science

Article
Report number	hep-lat/9412049
Title	Renormalons on the lattice
Author(s)	Crisafulli, M. (INFN, Rome ; Rome U.) ; Gimenez, V. (INFN, Rome ; Rome U.) ; Martinelli, G. (INFN, Rome ; Rome U. ; CERN) ; Sachrajda, Christopher T. (Southampton U.)
Publication	1994
Imprint	1994-09
Number of pages	4
Note	4 pages, latex, 2 figure as postscript files. Report-no: contribution to Lattice '94, 27 Sep - 1 Oct, Bielefeld, Germany; to appear in the proceedings
In:	Nucl.Phys.Proc.Suppl. 42 (1995) 315-318
In:	12th International Symposium on Lattice Field Theory, Bielefeld, Germany, 27 Sep - 1 Oct 1994, pp.315-318
DOI	10.1016/0920-5632(95)00237-4
Subject category	Particle Physics - Lattice
Abstract	We present the first lattice calculation of the B-meson binding energy \labar and of the kinetic energy \lambda_1/2 m_Q of the heavy-quark inside the pseudoscalar B-meson. In order to cancel the ambiguities due to the ultraviolet renormalons present in the operator matrix elements, this calculation has required the non-perturbative subtraction of the power divergences present in the Lagrangian operator \energy and in the kinetic energy operator \kkinetic. The non-perturbative renormalization of the relevant operators has been implemented by imposing suitable renormalization conditions on quark matrix elements in the Landau gauge.

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Email contact: "V. GIMENEZ, DIPARTAMENTO DI FISICA, UNIVERSITA DI ROMA 'LA SAPIENZA', PIAZZALE