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Статья

Melikhov, D.
Factorization of Multiparticle Contributions to Amplitudes of B-Meson Weak Decays / D.Melikhov. – Text : electronic // The European Physical Journal C. – 2025. – Vol. 85, No. 12. – P. 1393. – URL: https://doi.org/10.1140/epjc/s10052-025-15141-6. – Bibliogr.: 32.

We show that multiparticle contributions to amplitudes of weak decays of the generic topology (heavy quark hits some intermediate point of the propagator line joining the end-points from which momenta q and q' are emitted) is given in the heavy quark limit and at the leading order in α&sub(s) by the convolution of (i) hard kernel composed of highly virtual propagators of light degrees of freedom and (ii) the B-meson multiparticle wave function, <0|φ(x)φ(x1)··· φ(x&sub(n))φb(0)φ(x'&sub(n)··· φ(x'&sub(1))φ(x')|B(p)>, in a double-collinear light-cone configuration: the coordinates x, x&sub(1),..., xn are ordered and aligned along the lightlike 4-vector a&sub(μ), a*2 = 0, q&sub(μ) ∝ a&sub(μ), while the coordinates x', x'&sub(1),..., x'&sub(n) are ordered and aligned along the light-like 4-vector a'&sub(μ), a'*2 = 0, q'&sub(μ) ∝ a'&sub(μ), a'a= 0. Corrections to this factorization formula are suppressed by powers of *L&sub(QCD)/MB.



ОИЯИ = ОИЯИ (JINR)2025
Спец.(статьи,препринты) = С 323.5 - Теория взаимодействия частиц при высоких энергиях$
Спец.(статьи,препринты) = С 324.1в - Слабые взаимодействия. Теория Вайнберга- Салама и ее модификации$