Measurements of parity violating spin asymmetries of the W boson, W± →e±, at mid-rapidity with the PHENIX Detector at RHIC
Conference
Gal, C. (2014). Measurements of parity violating spin asymmetries of the W boson, W± →e±, at mid-rapidity with the PHENIX Detector at RHIC
. 28-April-2014
Gal, C. (2014). Measurements of parity violating spin asymmetries of the W boson, W± →e±, at mid-rapidity with the PHENIX Detector at RHIC
. 28-April-2014
Precision measurements of helicity parton distributions functions (hPDFs) lie at the heart of unravelin the nucleon spin puzzle. The macr; and macr; quark distributions are significantly better constraine than the anti-quark and macr; distributions. A clean way to measure the anti-quark distribution directly, without the dilution of poorly known fragmentation functions, is to measur the parity violating W production with p+p collisions a √s = 500 GeV and its subsequent deca W →e/μ. The PHENIX detector is capable of measuring both in the central and forward rapidit respectively. In this talk we will present the status of W→ e/ asymmetry measurement base on ∼160 pb-1 data collected in 2011, 2012, and 2013.
