کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
8182760 1527053 2018 17 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
ΛcN interaction from lattice QCD and its application to Λc hypernuclei
کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه فیزیک و نجوم فیزیک هسته ای و انرژی بالا
پیش نمایش صفحه اول مقاله
ΛcN interaction from lattice QCD and its application to Λc hypernuclei
چکیده انگلیسی
The interaction between Λc and a nucleon (N) is investigated by employing the HAL QCD method in the (2+1)-flavor lattice QCD on a (2.9fm)3 volume at mπ≃410,570,700 MeV. We study the central potential in S01 channel as well as central and tensor potentials in S13−3D1 channel, and find that the tensor potential for ΛcN is negligibly weak and central potentials in both S01 and S13−3D1 channels are almost identical with each other except at short distances. Phase shifts and scattering lengths calculated with these potentials show that the interaction of ΛcN system is attractive and has a similar strength in S01 and S13 channels at low energies (i.e. the kinetic energy less than about 40 MeV). While the attractions are not strong enough to form two-body bound states, our results lead to a possibility to form Λc hypernuclei for sufficiently large atomic numbers (A). To demonstrate this, we derive a single-folding potential for Λc hypernuclei from the Λc-nucleon potential obtained in lattice QCD, and find that Λc hypernuclei can exist for A≥12 with the binding energies of a few MeV. We also estimate the Coulomb effect for the Λc hypernuclei.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Nuclear Physics A - Volume 971, March 2018, Pages 113-129
نویسندگان
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