Speaker
Description
In this talk, I will present our recent progress on the fragmentation functions for the production of P-wave $B_c$ mesons within the nonrelativistic QCD (NRQCD) factorization framework. We have derived, for the first time, the gluon fragmentation functions into P-wave $B_c$ states, including both color-singlet and color-octet contributions. Ultraviolet divergences arising in the phase-space integrals are treated using a subtraction method together with operator renormalization in the $\overline{\rm MS}$ scheme. Numerical results for the fragmentation functions, fragmentation probabilities, and average momentum fractions will be discussed, along with compact analytic parameterizations that can be directly applied to precision phenomenological studies at current and future high-energy colliders.
| 请选择分会 | 强子物理与味物理 |
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