کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
9854972 1527857 2005 16 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Heavy quarkonium spectrum and production/annihilation rates to order β03αs3
موضوعات مرتبط
مهندسی و علوم پایه ریاضیات فیزیک ریاضی
پیش نمایش صفحه اول مقاله
Heavy quarkonium spectrum and production/annihilation rates to order β03αs3
چکیده انگلیسی
We compute the third-order corrections to the heavy quarkonium spectrum and production/annihilation rates due to the leading renormalization group running of the static potential. The previously known complete O(mqαs5) result for the heavy quarkonium ground state energy is extended to the exited states. After including the O(αs3) corrections the perturbative results are in surprisingly good agreement with the experimental data on the masses of the excited ϒ resonances and the leptonic width of the ϒ(1S) meson. The impact of the corrections on the ϒ sum rules and top quark-antiquark threshold production cross section is also discussed.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Nuclear Physics B - Volume 716, Issues 1–2, 6 June 2005, Pages 303-318
نویسندگان
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