کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
10721966 | 1033655 | 2011 | 4 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Lattice QCD at the physical point: Light quark masses
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
فیزیک و نجوم
فیزیک هسته ای و انرژی بالا
پیش نمایش صفحه اول مقاله
![عکس صفحه اول مقاله: Lattice QCD at the physical point: Light quark masses Lattice QCD at the physical point: Light quark masses](/preview/png/10721966.png)
چکیده انگلیسی
Ordinary matter is described by six fundamental parameters: three couplings (gravitational, electromagnetic and strong) and three masses: the electronʼs (me) and those of the up (mu) and down (md) quarks. An additional mass enters through quantum fluctuations: the strange quark mass (ms). The three couplings and me are known with an accuracy of better than a few per mil. Despite their importance, mu, md (their average mud) and ms are far less accurately known. Here we determine them with a precision below 2% by performing ab initio lattice quantum chromodynamics (QCD) calculations, in which all systematics are controlled. We use pion and quark masses down to (and even below) their physical values, lattice sizes of up to 6 fm, and five lattice spacings to extrapolate to continuum spacetime. All necessary renormalizations are performed nonperturbatively.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Physics Letters B - Volume 701, Issue 2, 4 July 2011, Pages 265-268
Journal: Physics Letters B - Volume 701, Issue 2, 4 July 2011, Pages 265-268
نویسندگان
Budapest-Marseille-Wuppertal Collaboration Budapest-Marseille-Wuppertal Collaboration, S. Durr, Z. Fodor, C. Hoelbling, S.D. Katz, S. Krieg, T. Kurth, L. Lellouch, T. Lippert, K.K. Szabo, G. Vulvert,