Semileptonic Λc→Λℓνℓ decays in light-cone QCD sum rules with Λc distribution amplitudes
European Physical Journal C, cilt.86, sa.1, 2026 (SCI-Expanded, Scopus)
- Yayın Türü: Makale / Tam Makale
- Cilt numarası: 86 Sayı: 1
- Basım Tarihi: 2026
- Doi Numarası: 10.1140/epjc/s10052-026-15301-2
- Dergi Adı: European Physical Journal C
- Derginin Tarandığı İndeksler: Science Citation Index Expanded (SCI-EXPANDED), Scopus, Chemical Abstracts Core, Compendex, INSPEC, zbMATH, Directory of Open Access Journals, Nature Index
- Orta Doğu Teknik Üniversitesi Adresli: Evet
Özet
We study the semileptonic decay of its SU(3) partner, the Λc→Λℓ+νℓ (ℓ=e,μ) transition, within the framework of light-cone QCD sum rules (LCSR) by using the distribution amplitudes of heavy Λc baryon. The numerical analysis is performed using two different sets of Λc baryon light-cone distribution amplitudes. The resulting form factors are parametrized by a model-independent z-series expansion and used to compute the differential and total decay widths. Our predictions for the branching fractions are in good agreement with the latest BESIII measurements and with lattice-QCD results.