REVIEW 5 cited by
A complete NLO calculation of the $J/\psi$ and $\psi'$ production at hadron colliders
Not yet reviewed by Pith; the record is open.
This paper has not been read by Pith yet. Machine review is queued; the pith claim, tier, and objections will appear here once it completes.
SPECIMEN: schema-true, not a live event
T0 review · schema-true
One-sentence machine reading of the paper's core claim.
pith:XXXXXXXX · record.json · timestamp
Signed reviews
abstract
A complete next-to-leading order (NLO) calculation in $\alpha_s$ for the $\jpsi$ and $\psip$ prompt production at the Tevatron, LHC, and RHIC in nonrelativistic QCD is presented. We argue that the next-to-next-to-leading order (NNLO) color-singlet contribution may not be so important as to resolve the large discrepancy between theory and experiment in $\jpsi$ large $p_T$ production cross sections. Therefore, a complete NLO calculation, including both color-singlet and color-octet contribution, is necessary and essential to give a good description for $\jpsi$ and $\psip$ production. We also study the methods to fit the long-distance matrix elements using either two linear combined matrix elements or three matrix elements, and find these two methods can give consistent results. Compared with the measurements at the LHC and RHIC for prompt $\jpsi$ and $\psip$ production, our predictions are found to agree with all data. In particular, the recently released large $p_T$ data (up to 60-70 GeV) at the LHC are in good agreement with our predictions. Our results imply that the universality of color-octet matrix elements holds approximately in charmonium hadroproduction, when one uses fixed order perturbative calculation to describe data (the data in small $p_T$ region are not included). Our work may provide a new test for the universality of color-octet matrix elements, and the color-octet mechanism in general.
Forward citations
Cited by 5 Pith papers
-
Next-to-next-to-leading-order QCD corrections to ${}^3S_1^{(8)}$ gluon fragmentation function for quarkonium
First NNLO QCD short-distance coefficients for the ³S₁⁽⁸⁾ gluon fragmentation function are obtained numerically to high precision, with analytic endpoint logarithms reconstructed for threshold resummation.
-
Automated NRQCD and NRQED simulations of quarkonium and leptonium production with P-wave states and physical-mass effects
MadSONS extends MadGraph to automated LO NRQCD/NRQED event generation for arbitrary S- and P-wave bound states, with dual-number projectors and physical-mass reshuffling.
-
$J/\psi$ Polarization and $p_T$ distribution in $c\ \!\bar{c}$ associated hadroproduction at $\mathcal{O}(\alpha_s^5)$
The gluon-gluon fusion process gg -> J/psi + c cbar is computed at NLO QCD, with large corrections, nearly unpolarized J/psi, and improved agreement with LHC data, while a normalization gap of about an order of magnit...
-
Search for millicharged particles in proton-proton collisions at $\sqrt{s} = 13.6$ TeV
No millicharged particles were found in 124.7 fb^-1 of 13.6 TeV data; milliQan sets the strongest limits to date for masses >= 0.45 GeV and charges <= 0.24 e.
-
Statistical analysis of the azimuthal asymmetry in the $J/\psi$ leptoproduction in unpolarized $ep$ collisions
In a selected kinematic region, the measured cos(psi) and cos(2psi) azimuthal asymmetries of J/psi leptoproduction can separate the color-singlet model, the 1S0[8]-dominant NRQCD picture, and the equal-color-octet NRQ...
Discussion (0). Continue with ORCID to comment.