Gupta, Sourendu ; Sridhar, K. (1997) Color-octet contributions to xF distributions in J/ψ hadroproduction at fixed target energies Physical Review D - Particles, Fields, Gravitation and Cosmology, 55 (5). pp. 2650-2656. ISSN 1550-7998
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Official URL: http://prd.aps.org/abstract/PRD/v55/i5/p2650_1
Related URL: http://dx.doi.org/10.1103/PhysRevD.55.2650
Abstract
We study J/ψ production at fixed-target energies, including the color-octet production mechanisms predicted by NRQCD. In an earlier paper, we found that the octet components were crucial in understanding pT-integrated forward (xF>0) cross sections. Here we make a detailed comparison of the theoretical predictions with measured xF distributions from fixed-target experiments. We find that the model predictions agree well with data. Taking into account higher orders in NRQCD, we argue that σ (Χ1)/σ (Χ2)=0.6, in excellent agreement with data. Similiar arguments also predict that σ (Χ)/σ (J/ψ ) is roughly equal in photo- and hadroproduction.
| Item Type: | Article |
|---|---|
| Source: | Copyright of this article belongs to The American Physical Society. |
| ID Code: | 66099 |
| Deposited On: | 21 Oct 2011 03:22 |
| Last Modified: | 21 Oct 2011 03:22 |
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