caa a22 4500 445872349 CHVBK 20180317145516.0 cr unu---uuuuu 170323e20111201xx s 000 0 eng 10.1140/epja/i2011-11151-y doi (NATIONALLICENCE)springer-10.1140/epja/i2011-11151-y In-medium operator product expansion for heavy-light-quark pseudoscalar mesons [Elektronische Daten] [Sven Zschocke, Thomas Hilger, Burkhard Kämpfer] The operator product expansion (OPE) for heavy-light-quark pseudoscalar mesons (D -mesons and B -mesons) in medium is determined, both for a moving meson with respect to the surrounding medium as well as for a meson at rest. First of all, the OPE is given in terms of normal-ordered operators up to mass dimension 5, and the mass of the heavy quark and the mass of the light quark are kept finite. The Wilson coefficients of such an expansion are infrared (IR) divergent in the limit of a vanishing light-quark mass. A consistent separation of scales necessitates an OPE in terms of non-normal-ordered operators, which implies operator mixing, where the IR-divergences are absorbed into the operators. It is shown that the Wilson coefficients of such an expansion are IR-stable, and the limit of a vanishing light-quark mass is perfomed. Details of the major steps for the calculation of the Wilson coefficients are presented. By a comparison with previous results obtained by other theoretical groups we have found serious disagreements. SIF, Springer-Verlag Berlin Heidelberg, 2011 Zschocke Sven Institut für Planetare Geodäsie, Lohrmann-Observatorium, TU Dresden, D-01062, Dresden, Germany aut Hilger Thomas Helmholtz-Zentrum Dresden-Rossendorf, PF 510119, D-01314, Dresden, Germany aut Kämpfer Burkhard Helmholtz-Zentrum Dresden-Rossendorf, PF 510119, D-01314, Dresden, Germany aut The European Physical Journal A Springer Berlin Heidelberg 47/12(2011-12-01), 1-21 1434-6001 47:12<1 2011 47 10050 https://doi.org/10.1140/epja/i2011-11151-y text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1140/epja/i2011-11151-y text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Zschocke Sven Institut für Planetare Geodäsie, Lohrmann-Observatorium, TU Dresden, D-01062, Dresden, Germany aut NATIONALLICENCE 700 1- Hilger Thomas Helmholtz-Zentrum Dresden-Rossendorf, PF 510119, D-01314, Dresden, Germany aut NATIONALLICENCE 700 1- Kämpfer Burkhard Helmholtz-Zentrum Dresden-Rossendorf, PF 510119, D-01314, Dresden, Germany aut NATIONALLICENCE 773 0- The European Physical Journal A Springer Berlin Heidelberg 47/12(2011-12-01), 1-21 1434-6001 47:12<1 2011 47 10050 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer