Massless parton asymptotics within variable flavour number schemes
نویسندگان
چکیده
منابع مشابه
Massless Parton Asymptotics within Variable Flavour Number Schemes
In this note we formulate and investigate theoretical uncertainties for high Q deep inelastic heavy quark (charm, etc.) production rates which arise within collinear resummation techniques from variations of the a priori unknown charm input scale Q0 of O(αs) variable flavour number schemes. We show that Q0 variations constitute a source of considerable theoretical uncertainty of present O(αs) c...
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متن کاملA Variable Number Flavour Scheme for Charged Current Heavy Flavour Structure Functions
The Thorne-Roberts variable flavour number scheme (VFNS) for heavy quarks is presented in detail for the specific case of charged current DIS. As in neutral current DIS this provides a smooth extrapolation from the fixed flavour number scheme (FFNS) appropriate at low Q2 to the zero-mass variable flavour number scheme (ZM-VFNS) appropriate as Q2 → ∞, and differs from alternative versions of a V...
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ژورنال
عنوان ژورنال: Physics Letters B
سال: 1999
ISSN: 0370-2693
DOI: 10.1016/s0370-2693(99)01346-5