ψψ production at collider energies

Humpert, B.; Méry, P.

doi:10.1007/bf01577721

Cited by 63 publications

(51 citation statements)

References 12 publications

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“…[7]. We have carefully checked that our present results are consistent with earlier calculations made in the collinear limit [13,14]. Using the k t -factorization approach we go beyond the Leading-Order approximations by including the initial state radiation corrections in the form of evolution of gluon densities.…”

Section: Introductionsupporting

confidence: 79%

Correlations in J/ψ pair production as SPS versus DPS discriminators

Baranov¹

2014

Proceedings of the XXI International Workshop High Energy Physics and Quantum Field Theory — PoS(QFTHEP 2013)

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We focus on the problem of disentangling the single (SPS) and double (DPS) parton scattering modes in the production of J/ψ pairs at the LHC conditions. Our analysis is based on comparing the shapes of the differential cross sections and on studying their behavior under imposing kinematical cuts. On the SPS side, we consider the leading-order O(α 4 s ) contribution with radiative corrections (taken into account in the framework of the k t -factorization approach) and the subleading O(α 6 s ) contribution from pseudo-diffractive gluon-gluon scattering represented by one gluon exchange and two gluon exchange mechanisms. We come to the conclusion that disentangling the SPS and DPS modes is rather difficult on the basis of azimuthal correlations, while the rapidity difference looks more promising, provided the acceptance of the experimental detectors has enough rapidity coverage.

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Section: Introductionsupporting

confidence: 79%

Correlations in J/ψ pair production as SPS versus DPS discriminators

Baranov¹

2014

Proceedings of the XXI International Workshop High Energy Physics and Quantum Field Theory — PoS(QFTHEP 2013)

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“…LO colour singlet calculations for the gg → J /ψJ /ψ process in perturbative QCD exist and give results consistent with the data [532][533][534]. In the LHCb fiducial region (2 < y J/ψ < 4.5, p T J/ψ < 10 GeV/c, where y J/ψ and p T J/ψ represent the rapidity and transverse momentum of the J /ψ, respectively) these calculations predict the J /ψJ /ψ production cross-section to be 4.1 ± 1.2 nb [534] in agreement with the measured value of 5.1 ± 1.0 nb [531].…”

Section: Quarkonia and Multi-parton Scatteringmentioning

confidence: 61%

Implications of LHCb measurements and future prospects

Bharucha¹,

Bigi²,

Bobeth³

et al. 2013

Eur. Phys. J. C

170

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region at a hadron collider. This document discusses the implications of these first measurements on classes of extensions to the Standard Model, bearing in mind the interplay with the results of searches for on-shell production of new particles at ATLAS and CMS. The physics potential of an upgrade to the LHCb detector, which would allow an order of magnitude more data to be collected, is emphasised.

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“…1 was first formulated in Refs. [20,21]. Later on, it was extended to considering the polarization effects [22,23] and to including the color-octet contributions, see [23,24] and references therein.…”

Section: Theoretical Framework a Sps Contributionsmentioning

confidence: 99%

Interparticle correlations in the production ofJ/ψpairs in proton-proton collisions

et al. 2013

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We focus on the problem of disentangling the single (SPS) and double (DPS) parton scattering modes in the production of J/ψ pairs at the LHC conditions. Our analysis is based on comparing the shapes of the differential cross sections and on studying their behavior under imposing kinematical cuts. On the SPS side, we consider the leading-order O(α 4 s ) contribution with radiative corrections (taken into account in the framework of the kt-factorization approach) and the subleading O(α 6 s ) contribution from pseudo-diffractive gluon-gluon scattering represented by one gluon exchange and two gluon exchange mechanisms. We come to the conclusion that disentangling the SPS and DPS modes is rather difficult on the basis of azimuthal correlations, while the rapidity difference looks more promising, provided the acceptance of the experimental detectors has enough rapidity coverage.

show abstract

ψψ production at collider energies

Cited by 63 publications

References 12 publications

Correlations in J/ψ pair production as SPS versus DPS discriminators

Correlations in J/ψ pair production as SPS versus DPS discriminators

Implications of LHCb measurements and future prospects

Interparticle correlations in the production ofJ/ψpairs in proton-proton collisions

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