Next-to-leading order corrections in exclusive meson production

Next-to-leading order corrections in exclusive meson production
复制标题

独家介子生产中次领先的阶次修正

DOI:
10.1140/epjc/s10052-007-0423-3
复制
发表时间:
2007
期刊:
The European Physical Journal C
影响因子:
--
通讯作者:
W. Kugler
W. Kugler
中科院分区:
--
文献类型:
--
作者:
M. Diehl;W. Kugler

文献摘要

参考文献

被引文献

相似文献

我们详细分析了共线因子分解方法下的硬排他介子生产的次领先阶修正的大小。修正的横截面被发现是巨大的,在小xB和大量的典型的固定目标的运动学。在我们所采用的核子螺旋度翻转分布模型下,矢量介子产生中的横向目标偏振不对称性强烈地受到辐射修正的影响,除了在大的xB。它的整体尺寸对于ρ产生来说非常小,但在ω通道中可能很大。
We analyze in detail the size of next-to-leading order corrections to hard exclusive meson production within the collinear factorization approach. Corrections to the cross section are found to be huge at small xB and substantial in typical fixed-target kinematics. With the models we take for nucleon helicity-flip distributions, the transverse target polarization asymmetry in vector meson production is strongly affected by radiative corrections, except at large xB. Its overall size is very small for ρ production but can be large in the ω channel.
DOI: 10.1016/j.nuclphysb.2003.09.026
发表时间: 2003-08
期刊: Nuclear Physics
影响因子: --
作者:
M. Beneke;M. Neubert
通讯作者: M. Beneke;M. Neubert