Leading-twist parton distribution amplitudes of S-wave heavy-quarkonia
نویسندگان
چکیده
منابع مشابه
Meson twist - 4 parton distributions in terms of twist - 2 distribution amplitudes at large N c
In this particular isospin combination of structure functions the contribution of twist-2 operators cancels out exactly and twist-4 contributions are dominant. It is remarkable that in the large Nc limit the twist-4 distribution function of quarks in the pion can be reduced to a convolution of twist-2 pion distribution amplitudes. 2. One can read the contribution of four-quark twist-4 operators...
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ژورنال
عنوان ژورنال: Physics Letters B
سال: 2016
ISSN: 0370-2693
DOI: 10.1016/j.physletb.2015.11.075