کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
8182588 | 1526773 | 2016 | 5 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
The Relation between the Perturbative QCD Scale Îs and Hadronic Masses from Light-Front Holography
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
فیزیک و نجوم
فیزیک هسته ای و انرژی بالا
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چکیده انگلیسی
QCD is well understood at short distances where perturbative calculations are feasible. Establishing an explicit analytic connection between the short-distance regime and the large-distance physics of quark confinement has been a long-sought goal. A major challenge is to relate the scale Îs underlying the evolution of the QCD coupling in the perturbative regime to the masses of hadrons. We show here how new theoretical insights into the behavior of QCD at large distances leads to such a relation. The resulting prediction for Îs in the MS¯ scheme agrees well with experimental measurements. Conversely, the relation can be used to predict the masses of hadrons composed of light quarks with the measured value of Îs as the sole parameter. We also use “light-front holography” to determine the analytic form of αs(Q2) at small Q2.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Nuclear and Particle Physics Proceedings - Volumes 270â272, JanuaryâMarch 2016, Pages 88-92
Journal: Nuclear and Particle Physics Proceedings - Volumes 270â272, JanuaryâMarch 2016, Pages 88-92
نویسندگان
A. Deur, S.J. Brodsky, G.F. de Teramond,