Recent Results on Inclusive Quarkonium Pair Production in Proton-Proton Collisions

  • W. Schäfer Institute of Nuclear Physics, Polish Academy of Sciences
  • I. Babiarz Institute of Nuclear Physics, Polish Academy of Sciences
  • A. Cisek Faculty of Mathematics and Natural Sciences, University of Rzesz´ow
  • A. Szczurek Institute of Nuclear Physics, Polish Academy of Sciences
Keywords: perturbative QCD, quarkonia, multiparton processes

Abstract

Recently, there has been much interest in the pair production of charmonia. One of the main motivations behind these studies is that the production of quarkonium pairs is expected to receive an important contribution from the double parton scattering (DPS) production mode. A large effective cross-section qeff is found from the empirical analysis of the J/ф-pair production – about a factor 2.5 smaller than the usually accepted qeff = 15 mb. Here, we present the recent results of our calculations of the xc pair production, mainly in the single parton scattering (SPS) mode. An important feature is that the single-gluon exchange mechanism can to some extent mimic the behavior of the DPS production.

References

C. H. Kom, A. Kulesza, W. J. Stirling. Pair production of J/ф as a probe of double parton scattering at LHCb. Phys. Rev. Lett. 107, 082002 (2011). https://doi.org/10.1103/PhysRevLett.107.082002

M. Luszczak, R. Maciu la, A. Szczurek. Production of two cc pairs in double-parton scattering. Phys. Rev. D 85, 094034 (2012). https://doi.org/10.1103/PhysRevD.85.094034

V.M. Abazov et al., [D0 Collaboration]. Observation and studies of double J/ф production at the Tevatron. Phys. Rev. D 90, 111101 (2014). https://doi.org/10.1103/PhysRevD.90.079904

V. Khachatryan et al., [CMS Collaboration]. Measurement of prompt J/ф pair production in pp collisions at vs = 7 Tev. JHEP 1409, 094 (2014).

M. Aaboud et al., [ATLAS Collaboration]. Measurement of the prompt J/ф pair production cross-section in pp collisions at vs = 8 TeV with the ATLAS detector. Eur. Phys. J. C 77, 76 (2017).

R. Aaij et al., [LHCb Collaboration]. Observation of J/ф pair production in pp collisions at vs = 7 TeV. Phys. Lett. B 707, 52 (2012).

R. Aaij et al., [LHCb Collaboration]. Measurement of the J/ф pair production cross-section in pp collisions at vs = 13 TeV. JHEP 1706, 047 (2017)

Erratum: JHEP 1710, 068 (2017).

S.P. Baranov. Pair production of J/ф mesons in the kt-factorization approach. Phys. Rev. D 84, 054012 (2011). https://doi.org/10.1103/PhysRevD.84.054012

S.P. Baranov, A.M. Snigirev, N.P. Zotov, A. Szczurek, W. Sch?afer. Interparticle correlations in the production of J/ф pairs in proton-proton collisions. Phys. Rev. D 87, 034035 (2013). https://doi.org/10.1103/PhysRevD.87.034035

A. Cisek, W. Sch?afer, A. Szczurek. Production of xc pairs with large rapidity separation in kT factorization. Phys. Rev. D 97, 114018 (2018). https://doi.org/10.1103/PhysRevD.97.114018

I. Babiarz, W. Sch?afer, A. Szczurek. Associated production of xc pairs with a gluon in the collinear-factorization approach. Phys. Rev. D 99, 074014 (2019). https://doi.org/10.1103/PhysRevD.99.074014

W. Sch?afer. Production of quarkonium pairs in high-energy proton-proton collisions. EPJ Web Conf. 199, 01021 (2019). https://doi.org/10.1051/epjconf/201919901021

J. R. Gaunt, R. Maciu la, A. Szczurek. Conventional versus single-ladder-splitting contributions to double parton scattering production of two quarkonia, two Higgs bosons and cccc. Phys. Rev. D 90, 054017 (2014). https://doi.org/10.1103/PhysRevD.90.054017

Published
2019-09-18
How to Cite
Schäfer, W., Babiarz, I., Cisek, A., & Szczurek, A. (2019). Recent Results on Inclusive Quarkonium Pair Production in Proton-Proton Collisions. Ukrainian Journal of Physics, 64(8), 750. https://doi.org/10.15407/ujpe64.8.750
Section
New Trends in High-Energy Physics (Conference materials)

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