Azimuthal asymmetries in unpolarized semi-inclusive deep inelastic scattering at COMPASS

被引：0
|
作者：
Moretti, A. [1 ,2 ]
机构：
[1] Univ Trieste, Trieste, Italy
[2] Ist Nazl Fis Nucl, Sez Trieste, Trieste, Italy
来源：
NUOVO CIMENTO C-COLLOQUIA AND COMMUNICATIONS IN PHYSICS | 2021年 / 44卷 / 2-3期
关键词：
D O I：
10.1393/ncc/i2021-21061-2
中图分类号：
O4 [物理学];
学科分类号：
0702 ;
摘要：
The amplitude of the modulations in the azimuthal angle distribution (azimuthal asymmetries) of hadrons produced in the semi-inclusive deep inelastic scattering on an unpolarized nucleon carries information on the intrinsic transverse momentum of the quark and on the Boer-Mulders parton distribution function. Using the data collected with a 160 GeV muon beam scattering off a liquid-hydrogen target, the COMPASS Collaboration has recently measured the azimuthal asymmetries A(UU)(cos phi h), A(UU)(cos2 phi h) and A(LU)(sin phi h) of charged hadrons. The preliminary results shown here confirm the strong kinematic dependencies observed in previous measurements.
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页数：4
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