scholarly journals Leptoproduction of $\rho $ Mesons as Discriminator for the Unintegrated Gluon Distribution in the Proton

2019 ◽  
Vol 12 (4) ◽  
pp. 891
Author(s):  
A.D. Bolognino ◽  
F.G. Celiberto ◽  
D.Yu. Ivanov ◽  
A. Papa
Keyword(s):  
Gluon Distribution ◽  
Unintegrated Gluon ◽  
Rho Mesons

scholarly journals Exclusive production of $$\rho $$-mesons in high-energy factorization at HERA and EIC

2021 ◽  
Vol 81 (9) ◽  
Author(s):  
A. D. Bolognino ◽  
F. G. Celiberto ◽  
D. Yu. Ivanov ◽  
A. Papa ◽  
W. Schäfer ◽  
...  
Keyword(s):  
Cross Sections ◽  
Gluon Distribution ◽  
High Energy ◽  
Proton Target ◽  
Hera Data ◽  
Unintegrated Gluon ◽  
Exclusive Production ◽  
Rho Mesons ◽  
Gluon Distributions

AbstractWe study cross sections for the exclusive diffractive leptoproduction of $$\rho $$ ρ -mesons, $$\gamma ^*~p~\rightarrow ~\rho ~p$$ γ ∗ p → ρ p , within the framework of high-energy factorization. Cross sections for longitudinally and transversally polarized mesons are shown. We employ a wide variety of unintegrated gluon distributions available in the literature and compare to HERA data. The resulting cross sections strongly depend on the choice of unintegrated gluon distribution. We also present predictions for the proton target in the kinematics of the Brookhaven EIC.

scholarly journals DIFFRACTIVE DOUBLE-ELASTIC PRODUCTION OF η′ AND ηc IN THE pp → pXp REACTION

2007 ◽  
Vol 22 (02n03) ◽  
pp. 667-671 ◽  
Author(s):  
ANTONI SZCZUREK
Keyword(s):  
Gluon Distribution ◽  
Azimuthal Angle ◽  
Distribution Functions ◽  
Unintegrated Gluon ◽  
Angle Difference

I discuss double-diffractive (double-elastic) production of the η′ and ηc mesons in the pp → pXp reaction within the formalism of unintegrated gluon distribution functions (UGDF). The contribution of γ*γ* → η′ fusion is estimated. The distributions in the Feynman xF (or rapidity), transferred four-momenta squared between initial and final protons (t1, t2) and azimuthal angle difference between outgoing protons (Φ) are calculated and discussed. The results are compared with the WA102 data. Predictions at higher energies are presented.

scholarly journals Unintegrated gluon distribution from forward polarized $$\rho $$ ρ -electroproduction

2018 ◽  
Vol 78 (12) ◽  
Author(s):  
Andrèe Dafne Bolognino ◽  
Francesco G. Celiberto ◽  
Dmitry Yu. Ivanov ◽  
Alessandro Papa
Keyword(s):  
Gluon Distribution ◽  
Unintegrated Gluon

STUDY OF BFKL GLUON DYNAMICS IN HEAVY QUARKONIUM PHOTOPRODUCTION AT HERA

2000 ◽  
Vol 15 (10) ◽  
pp. 695-707 ◽  
Author(s):  
A. V. LIPATOV ◽  
N. P. ZOTOV
Keyword(s):  
Experimental Data ◽  
Total Cross Section ◽  
Cross Section ◽  
Gluon Distribution ◽  
Heavy Quarkonium ◽  
Unintegrated Gluon ◽  
Gluon Distributions ◽  
Theoretical Results

In the framework of semihard QCD approach we consider the processes of inelastic heavy quarkonium photoproduction at HERA with emphasis on the BFKL dynamics of gluon distributions. We investigate the dependences of the total cross-section of inelastic J/Ψ photoproduction and also pT and z spectra on different forms of the unintegrated gluon distribution. It is shown that the total cross-section is most sensitive to the Pomeron intercept parameter Δ. We compare the theoretical results with the available H1 and ZEUS experimental data.

scholarly journals Unintegrated gluon distribution from the Ciafaloni-Catani-Fiorani-Marchesini equation

2000 ◽  
Vol 62 (9) ◽  
Author(s):  
M. A. Kimber ◽  
J. Kwiecinski ◽  
A. D. Martin ◽  
A. M. Stasto
Keyword(s):  
Gluon Distribution ◽  
Unintegrated Gluon

scholarly journals HEAVY QUARK PHOTOPRODUCTION IN THE SEMIHARD QCD APPROACH AND THE UNINTEGRATED GLUON DISTRIBUTION

2000 ◽  
Vol 15 (28) ◽  
pp. 1727-1738 ◽  
Author(s):  
A. V. LIPATOV ◽  
V. A. SALEEV ◽  
N. P. ZOTOV
Keyword(s):  
Experimental Data ◽  
Total Cross Section ◽  
Heavy Quark ◽  
Cross Section ◽  
Gluon Distribution ◽  
Unintegrated Gluon ◽  
Gluon Distributions ◽  
Theoretical Results

Processes of heavy quark photoproduction at HERA energies are considered using the semihard (k⊥ factorization) QCD approach with emphasis of the BFKL dynamics of gluon distributions. We investigate the dependences of the total cross-section of heavy quark photoproduction and also the pT distribution on different forms of the unintegrated gluon distribution. We present a comparison of the theoretical results with available H1 and ZEUS experimental data for charm and beauty photoproductions.

scholarly journals B-meson production in the Parton Reggeization Approach at Tevatron and the LHC

2015 ◽  
Vol 30 (04n05) ◽  
pp. 1550023 ◽  
Author(s):  
A. V. Karpishkov ◽  
M. A. Nefedov ◽  
V. A. Saleev ◽  
A. V. Shipilova
Keyword(s):  
Gluon Distribution ◽  
B Meson ◽  
Meson Production ◽  
Lhcb Collaboration ◽  
Leading Order ◽  
Unintegrated Gluon ◽  
Momentum Distributions ◽  
Theoretical Predictions ◽  
Fragmentation Functions ◽  
Free Parameters

We study the inclusive hadroproduction of B0, B+ and [Formula: see text] mesons at leading order in the Parton Reggeization Approach using the universal fragmentation functions extracted from the combined e+e- annihilation data from CERN LEP1 and SLAC SLC colliders. We have described B-meson transverse momentum distributions measured in the central region of rapidity by the CDF Collaboration at Fermilab Tevatron and CMS Collaboration at LHC within uncertainties and without free parameters, applying Kimber–Martin–Ryskin unintegrated gluon distribution function in a proton. The forward B-meson production (2.0<y<4.5) measured by the LHCb Collaboration also has been studied and expected disagreement between our theoretical predictions and data has been obtained.

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