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Nuclear matrix element uncertainties in short range<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:mn>0</mml:mn><mml:mi>ν</mml:mi><mml:mi>β</mml:mi><mml:mi>β</mml:mi></mml:math>decay
The evaluation of short range contributions to neutrinoless double beta decay has been challenged due to criticism of the ansatz of the nuclear matrix element calculations. We comment on the criticism and uncertainties of these calculations and the effect on the derived limits.