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Письма в Журнал экспериментальной и теоретической физики, 2008, том 87, выпуск 11, страницы 703–708
(Mi jetpl127)
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Эта публикация цитируется в 10 научных статьях (всего в 10 статьях)
ПОЛЯ, ЧАСТИЦЫ, ЯДРА
Failure of the collinear expansion in calculation of the induced gluon emission
P. Aurenchea, B. G. Zakharovb, H. Zaraketc a Laboratoire d'Annecy-le-Vieux de Physique Théorique LAPTH, F-74941 Annecy-le-Vieux Cedex, France
b Landau Institute for Theoretical Physics, Russian Academy of Sciences, 117940 GSP-1, Moscow, 117334, Russia
c Faculty of Sciences (I), Lebanese University, Hadeth-Beirut, Lebanon
Аннотация:
We demonstrate that the collinear expansion fails in the case of gluon emission from a fast quark produced in $eA$ DIS. In this approximation the $N=1$ rescattering contribution to the gluon spectrum vanishes. We show that the higher-twist approach by Guo, Wang and Zhang [4, 5] based on the collinear expansion is wrong. The nonzero gluon spectrum obtained in [4, 5] those works is a consequence of an unjustified neglect of some important terms in the collinear expansion.
Поступила в редакцию: 28.04.2008
Образец цитирования:
P. Aurenche, B. G. Zakharov, H. Zaraket, “Failure of the collinear expansion in calculation of the induced gluon emission”, Письма в ЖЭТФ, 87:11 (2008), 703–708; JETP Letters, 87:11 (2008), 605–610
Образцы ссылок на эту страницу:
https://www.mathnet.ru/rus/jetpl127 https://www.mathnet.ru/rus/jetpl/v87/i11/p703
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