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Title: BFKL Pomeron loop contribution in diffractive photoproduction and inclusive hadroproduction of J/ψ and Υ

Journal Article · · Journal of High Energy Physics (Online)
 [1];  [2];  [2];  [3]
  1. Polish Academy of Sciences (PAS), Krakow (Poland). Inst. of Nuclear Physics
  2. Jagellonian Univ., Krakow (Poland). Inst. of Physics
  3. Pennsylvania State Univ., University Park, PA (United States)

We analyze contributions to the heavy vector meson production with large transverse momentum in proton-proton and diffractive photon-proton scattering driven by an exchange of two Balitsky-Fadin-Kuraev-Lipatov Pomerons in the squared amplitudes. The Pomerons couple to a single parton and form a Pomeron loop closed by the vector meson impact factors. For the photon-proton case the diffractive cut of the Pomeron loop contributes, and for the inclusive hadroproduction one finds the loop with two cut Pomerons. We compute both of these Pomeron loop contributions and study in detail their properties. The results are then used to calculate the cross sections for diffractive J/ψ photoproduction with large transverse momentum at HERA and the correlated two Pomeron contribution for inclusive J/ψ and γ production cross sections at the LHC. Within a unified approach a good description of the photoproduction data is found, but correlated two Pomeron mechanism gives only a small contribution to hadroproduction of the vector mesons at the LHC.

Research Organization:
Pennsylvania State Univ., University Park, PA (United States)
Sponsoring Organization:
National Science Centre, Poland; USDOE Office of Science (SC), Nuclear Physics (NP)
Grant/Contract Number:
SC0002145; 2015/17/B/ST2/01838; 2017/27/B/ST2/02755
OSTI ID:
1610650
Alternate ID(s):
OSTI ID: 1631144
Journal Information:
Journal of High Energy Physics (Online), Vol. 2019, Issue 7; ISSN 1029-8479
Publisher:
Springer BerlinCopyright Statement
Country of Publication:
United States
Language:
English
Citation Metrics:
Cited by: 5 works
Citation information provided by
Web of Science

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Cited By (3)

Double prompt J/ψ hadroproduction in the parton Reggeization approach with high-energy resummation text January 2019
Double Prompt J / ψ Hadroproduction in the Parton Reggeization Approach with High-Energy Resummation journal October 2019
High | t | diffractive vector meson production at the EIC journal January 2021

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