The Gluon Spin Structure Function from Slac E161
نویسنده
چکیده
We will determine the gluon spin density ∆g(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 ∆g(x) that differ from each other by as little as 10% in the range 0.1 < x < 0.2.
منابع مشابه
Slac-pub-8025 December1998 Gluon Virtuality and Heavy Sea Quark Contributions to the Spin-dependent G 1 Structure Function
We analyze the quark mass dependence of photon gluon fusion in polarized deep inelastic scattering for both the intrinsic and extrinsic gluon distributions of the nucleon. We calculate the e ective number of avors for each of the heavy and light quark photon gluon fusion contributions to the rst moment of the spin-dependent structure function g1(x). Submitted to Physical Review D. Steven.Bass@m...
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