2007/01/10 by The Compass Collaboration, V. Alexakhin, Yu. Alexandrov +99 · 2 citations
Physics and Astronomy · #High-Energy Particle Collisions Research #Particle physics theoretical and experimental studies #Quantum Chromodynamics and Particle Interactions #hep-ex
paper · pdf · doi:10.1016/j.physletb.2007.02.034
published as Phys.Lett.B647:330-340,2007 · 17 pages, 10 figures
arxiv created 2007/01/10 · openalex publication_date 2007/02/23 · arxiv updated 2009/12/01 · openalex created_date 2016/06/24 · openalex updated_date 2026/07/28
We present a precise measurement of the deuteron longitudinal spin asymmetry A1d and of the deuteron spin-dependent structure function g1d at Q2<1(GeV/c)2 and 4×10−5<x<2.5×10−2 based on the data collected by the COMPASS experiment at CERN during the years 2002 and 2003. The statistical precision is tenfold better than that of the previous measurement in this region. The measured A1d and g1d are found to be consistent with zero in the whole range of x.