The Gluon Spin Structure Function From SLAC E161 | Zendy

Stephen M. Rock | Zendy

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The Gluon Spin Structure Function From SLAC E161

Author(s) -

Stephen M. Rock

Publication year - 2003

Publication title -

aip conference proceedings

Language(s) - English

Resource type - Conference proceedings

SCImago Journal Rank - 0.177

H-Index - 75

eISSN - 1551-7616

pISSN - 0094-243X

DOI - 10.1063/1.1607189

Subject(s) - physics , muon , gluon , particle physics , asymmetry , nuclear physics , meson , quark , photon , polarization (electrochemistry) , spin (aerodynamics) , momentum (technical analysis) , nucleon , optics , chemistry , finance , economics , thermodynamics

We will determine the gluon spin density Δg(x) in the nucleon by measuring the asymmetry for polarized photo‐production of charmed quarks from polarized targets in End Station A at SLAC. The quasi‐mono‐chromatic circularly polarized photon beam will be produced from an oriented diamond crystal. The target will be longitudinally polarized LiD at a temperature of 0.3 K, centered in a 6.5 T magnetic field to obtain high polarization. Photo‐production of open charm will be tagged by decays of D mesons into high transverse momentum muons. The asymmetry for single muons will be measured as a function of muon momentum, muon transverse momentum, and photon beam energies with sufficient precision to discriminate among models of Δg(x) that differ from each other by as little as 10% in the range 0.1 < x < 0.2.

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