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arXiv · 0810.0020

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

Edmond L. Berger·Pavel M. Nadolsky
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Abstract

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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Edmond L. Berger, Pavel M. Nadolsky. 2008-11-10. Longitudinal parity-violating asymmetry in hadronic decays of weak bosons in polarized proton collisions. https://doi.org/10.1103/physrevd.78.114010

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