The second moment of the pion light cone wave function

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We present a preliminary result for second moment of the light cone wave function of the pion. This parameter is the subject of a discrepancy between theoretical predictions (coming from lattice and sum rules) and a recent experimental result (that remarkably agrees with purely perturbative predictions). In this work we exploit lattice hypercubic symmetries to remove power divergences and, moreover, implement a full 1-loop matching for all the contributing operators.

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3 pages

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Debbio, Luigi del; Pierro, Massimo di & Dougall, Alex September 25, 2003.

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Description

We present a preliminary result for second moment of the light cone wave function of the pion. This parameter is the subject of a discrepancy between theoretical predictions (coming from lattice and sum rules) and a recent experimental result (that remarkably agrees with purely perturbative predictions). In this work we exploit lattice hypercubic symmetries to remove power divergences and, moreover, implement a full 1-loop matching for all the contributing operators.

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3 pages

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  • 20th International Symposium on Lattice Field Theory (LATTICE 2002), Boston, MA (US), 06/24/2002--06/29/2002

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  • Report No.: FERMILAB-Conf-02/383-T
  • Grant Number: AC02-76CH03000
  • Office of Scientific & Technical Information Report Number: 815209
  • Archival Resource Key: ark:/67531/metadc736168

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  • September 25, 2003

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  • Oct. 18, 2015, 6:40 p.m.

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  • April 1, 2016, 6:40 p.m.

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Debbio, Luigi del; Pierro, Massimo di & Dougall, Alex. The second moment of the pion light cone wave function, article, September 25, 2003; Batavia, Illinois. (https://digital.library.unt.edu/ark:/67531/metadc736168/: accessed May 20, 2019), University of North Texas Libraries, Digital Library, https://digital.library.unt.edu; crediting UNT Libraries Government Documents Department.