Longitudinal parity-violating asymmetry in hadronic decays of weak bosons in polarized proton collisions

被引：2
|
作者：
Berger, Edmond L. [1 ]
Nadolsky, Pavel M. [2 ]
机构：
[1] Argonne Natl Lab, Div High Energy Phys, Argonne, IL 60439 USA
[2] So Methodist Univ, Dept Phys, Dallas, TX 75275 USA
来源：
PHYSICAL REVIEW D | 2008年 / 78卷 / 11期
基金：
美国国家科学基金会;
关键词：
D O I：
10.1103/PhysRevD.78.114010
中图分类号：
P1 [天文学];
学科分类号：
0704 ;
摘要：
We investigate the possible measurement of parity-violating spin asymmetries in jet pair production in proton-proton collisions at the Brookhaven Relativistic Heavy Ion Collider (RHIC), with the goal to constrain longitudinally polarized quark and antiquark distribution functions. A measurable asymmetry could be observed in the vicinity of the massive weak W boson resonance, where the parity-violating signal appears above the parity-conserving background and is enhanced by interference of the strong and electroweak production amplitudes. We discuss the potential for such measurements, perhaps the first opportunity to measure a parity-violating asymmetry in proton-proton collisions at RHIC. Sensitivity of this measurement to the polarization of down-type antiquarks is demonstrated.
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页数：11
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