Semileptonic Λc→Λℓνℓ decays in light-cone QCD sum rules with Λc distribution amplitudes

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ALIYEV T., BİLMİŞ S., SAVCI M.

European Physical Journal C, cilt.86, sa.1, 2026 (SCI-Expanded, Scopus) identifier identifier

  • 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.