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| Author | : Andrei Solodsky |
| Publisher | : |
| Total Pages | : 144 |
| Release | : 2001 |
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| Release | : 2014 |
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We present the observation of doubly-produced $J/\psi$ mesons with the D0 detector at Fermilab in $p\bar{p}$ collisions at $\sqrt{s}=1.96$ TeV. The production cross section for both singly and doubly-produced $J/\psi$ mesons is measured using a sample with an integrated luminosity of 8.1fb$^{-1}$. For the first time, the double $J/\psi$ production cross section is separated into contributions due to single and double parton scatterings. Using these measurements, we determine the effective cross section $\sigma_{eff}$, a parameter characterizing an effective spatial area of the parton-parton interactions and related to the parton spatial density inside the nucleon.
| Author | : K. Sridhar |
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| Total Pages | : |
| Release | : 1998 |
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| Release | : 2001 |
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In this talk the author shows the results of a fit of the NRQCD matrix elements to the CDF data for direct J/[psi] production, by including the radiative corrections to the g g[r-arrow][sup 3] S[sub 1][sup[1]] channel and the effect of the k[sub T]-smearing. Furthermore he performs the NLO NRQCD analysis of J/[psi] production in fixed-target proton-nucleon collisions and he fits the colour-octet matrix elements to the available experimental data. The results are compared to the Tevatron ones.
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| Total Pages | : 692 |
| Release | : 1991 |
| Genre | : Particles (Nuclear physics) |
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| Total Pages | : 676 |
| Release | : 1996 |
| Genre | : Science |
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| Total Pages | : 8 |
| Release | : 1986 |
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| Total Pages | : 29 |
| Release | : 1979 |
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| Total Pages | : 922 |
| Release | : 1993 |
| Genre | : Power resources |
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| Author | : Jerome Isaac Friedman |
| Publisher | : Office of Unive |
| Total Pages | : 108 |
| Release | : 1997 |
| Genre | : Science |
| ISBN | : |
