Low-energy gluon to the vacuum polarization of heavy quarks
نویسندگان
چکیده
منابع مشابه
Low-energy gluon contributions to the vacuum polarization of heavy quarks
We calculate a correction to the electromagnetic current induced by a heavy quark loop. The contribution of this correction to the vacuum polarization function appears at the O(αs) order of perturbation theory and has a qualitatively new feature – its absorptive part starts at zero energy in contrast to other contributions where the absorptive parts start at the two-particle threshold. Our resu...
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ژورنال
عنوان ژورنال: Journal of Experimental and Theoretical Physics Letters
سال: 2002
ISSN: 0021-3640,1090-6487
DOI: 10.1134/1.1478517