Abstract
We present a new measurement of the spin-dependent structure function g1d of the deuteron in deep inelastic scattering of 190 GeV polarised muons on polarised deuterons, in the kinematic range 0.003 <x <0.7 and 1 GeV2 <Q2 <60 GeV2. This structure function is found to be negative at small x. The first moment Γ1d=∫01g 1ddx evaluated at Q02 = 10 GeV2 is 0.034 ± 0.009 (stat.) ± 0.006 (syst.). This value is below the Ellis-Jaffe sum rule prediction by three standard deviations. Using our earlier determination of Γ1p, we obtain Γ1p - Γ1n = 0.199 ± 0.038 which agrees with the Bjorken sum rule. © 1995.
| Original language | English |
|---|---|
| Pages (from-to) | 248-254 |
| Number of pages | 7 |
| Journal | Physics Letters B |
| Volume | 357 |
| Issue number | 1-2 |
| DOIs | |
| Publication status | Published - 31 Aug 1995 |
| MoE publication type | A1 Journal article-refereed |
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