QCD calculation of J/Ψ + γ mass distributions

Berger, Edmond L.; Sridhar, K.

doi:10.1016/0370-2693(93)91022-f

Cited by 8 publications

(4 citation statements)

References 14 publications

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“…Among the associated-production processes, the production with a photon is certainly that which has been the object of the largest amount of theoretical studies [467,468,469,470,471,472,285,473,474,475,476,450,477,277,274,478,367]. The reason for this interest are multiple.…”

Section: Associated Hadroproduction With a Photonmentioning

confidence: 99%

New observables in inclusive production of quarkonia

2020

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Section: Associated Hadroproduction With a Photonmentioning

confidence: 99%

New observables in inclusive production of quarkonia

2020

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“…Among the associated-production processes, the production with a photon is certainly that which has been the object of the largest amount of theoretical studies [444,445,446,447,448,449,268,450,451,452,453,427,454,260,257,455,347]. The reason for this interest are multiple.…”

Section: Associated Hadroproduction With a Photonmentioning

confidence: 99%

New Observables in Inclusive Production of Quarkonia

Lansberg

2019

Preprint

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After an introduction motivating the study of quarkonium production, we review the recent developments in the phenomenology of quarkonium production in inclusive scatterings of hadrons and leptons. We naturally address data and predictions relevant for the LHC, the Tevatron, RHIC, HERA, LEP, B factories and EIC. An up-to-date discussion of the contributions from feed downs within the charmonium and bottomonium families as well as from b hadrons to charmonia is also provided. This contextualises an exhaustive overview of new observables such as the associated production along with a Standard Model boson (γ, W and Z), with another quarkonium, with another heavy quark as well as with light hadrons or jets. We address the relevance of these reactions in order to improve our understanding of the mechanisms underlying quarkonium production as well as the physics of multi-parton interactions, in particular the double parton scatterings. An outlook towards future studies and facilities concludes this review.

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“…being made to obtain improved theoretical predictions for complementary observables to the inclusive yield, such as hadroproduction of J/ψ and Υ (thereafter commonly named Q) in association with a photon [19,20,21,22,23,24,25,26]. Recently, the NLO corrections to the hadroproduction of Q + γ in the CS channel were computed by Li and Wang in [27].…”

Section: Introductionmentioning

confidence: 99%

Real Next-to-Next-to-Leading Order QCD Corrections to J/psi and Upsilon Hadroproductiom in Association with a Photon

Lansberg¹

2009

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We update the study of the QCD corrections to direct J/ψ and Υ hadroproduction in association with a photon in the QCDbased approach of the Colour-Singlet (CS) Model. After comparison with the recent full next-to-leading-order (NLO) computation for this process, we provide an independent confirmation to the inclusive case that NLO QCD corrections to quarkonium-production processes whose LO exhibits a non-leading P T behaviour can be reliably computed at mid and large P T by considering only the real emission contributions accompanied with a kinematical cut. In turn, we evaluate the leading part of the α 4 S α contributions, namely those coming from (J/ψ, Υ) + γ associated with two light partons. We find that they are dominant at mid and large P T . This confirms our expectations from the leading P T scaling of the new topologies appearing at NNLO. We obtain that the yield from the CS becomes one order of magnitude larger than the upper value of the potential Colour-Octet yield. The polarisation of the 3 S 1 quarkonia produced in association with a photon is confirmed to be longitudinal at mid and large P T .

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QCD calculation of J/Ψ + γ mass distributions

Cited by 8 publications

References 14 publications

New observables in inclusive production of quarkonia

New observables in inclusive production of quarkonia

New Observables in Inclusive Production of Quarkonia

Real Next-to-Next-to-Leading Order QCD Corrections to J/psi and Upsilon Hadroproductiom in Association with a Photon

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