Correlator of heavy-light quark currents in HQET in the large β₀ limit

2026/03/19 by Andrey G. Grozin
#hep-ph

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Abstract

The perturbative contribution to the correlator of two heavy-light quark currents in HQET expanded in light-quark masses up to quadratic terms is calculated at the leading order in 1/β₀. Ultraviolet and infrared renormalon poles of Borel images of the Wilson coefficients are discussed.

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