Corpus ID: 18283534

Worldline description of the Isgur-Wise function

  title={Worldline description of the Isgur-Wise function},
  author={N. G. Stefanis and A. Karanikas and C. N. Ktorides},
  journal={arXiv: High Energy Physics - Phenomenology},
An effective field theoretic description of the Isgur-Wise function in heavy-meson transitions is presented which emulates soft interactions by a fermion worldline with an infinitesimal self-intersecting loop. A point-splitting regularization technique is used, which replaces pointlike worldlines by ``ribbons'' in the sense of Witten. The calculated vertex function is correctly normalized, does not depend on the heavy-quark mass, and complies with different sets of recent experimental data of… Expand

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