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arXiv · 2202.04384

An estimation of non-valence contributions to form factors of heavy-light mesons

María Gómez-Rocha·Oliver Heger·Wolfgang Schweiger
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Abstract

We study the influence of non-valence quark-pair contributions in weak transition form factors of heavy-light mesons. Form factors are first calculated for spacelike momentum transfers in a reference frame where such contributions are suppressed. Analytic continuation to the timelike region and a comparison with the direct decay calculation, done with pure valence degrees of freedom, provides an estimate of the role that quark-pair contributions may play. We use the point form of relativistic quantum mechanics, which is particularly useful when treating heavy-light systems.

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María Gómez-Rocha, Oliver Heger, Wolfgang Schweiger. 2022-02-09. An estimation of non-valence contributions to form factors of heavy-light mesons. https://arxiv.org/abs/2202.04384

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