Renormalization of HQET Delta B=2 operators: O(a) improvement and 1/m matching with QCD

We determine a basis of dimension-7 operators which arise at O(a) in the Symanzik expansion of the ∆B = 2 operators with static heavy quarks. We consider both Wilson-like and Ginsparg-Wilson light quarks. Exact chiral symmetry reduces the number of these O(a) counterterms by a factor of two. Only a subset of these operators has previously appeared in the literature. We then extend the analysis to the O(1/m) operators contributing beyond the static approximation.

Renormalization of HQET Delta B=2 operators: O(a) improvement and 1/m matching with QCD / PAPINUTTO, MAURO LUCIO; G., Herdoiza; C., Pena; A., Vladikas. - In: POS PROCEEDINGS OF SCIENCE. - ISSN 1824-8039. - LATTICE2013(2014). ((Intervento presentato al convegno 31st International Symposium on Lattice Field Theory (Lattice 2013) tenutosi a Mainz, Germany.



Titolo: Renormalization of HQET Delta B=2 operators: O(a) improvement and 1/m matching with QCD
Autori: 
PAPINUTTO, MAURO LUCIO
mostra contributor esterni 
Data di pubblicazione: 2014
Rivista: 
POS PROCEEDINGS OF SCIENCE  
Citazione: Renormalization of HQET Delta B=2 operators: O(a) improvement and 1/m matching with QCD / PAPINUTTO, MAURO LUCIO; G., Herdoiza; C., Pena; A., Vladikas. - In: POS PROCEEDINGS OF SCIENCE. - ISSN 1824-8039. - LATTICE2013(2014). ((Intervento presentato al convegno 31st International Symposium on Lattice Field Theory (Lattice 2013) tenutosi a Mainz, Germany.
Handle: http://hdl.handle.net/11573/540799
Appartiene alla tipologia:04c Atto di convegno in rivista

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