Drell–Yan production with the CCFM-K evolution

Golec-Biernat, K.; Stebel, Tomasz

doi:10.1140/epjc/s10052-020-8026-3

Cited by 14 publications

(15 citation statements)

References 69 publications

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“…The CCFM formalism was then generalized [325] in order to account for non-linear effects in the gluon evolution, thus giving us a chance to gauge the impact of parton saturation on exclusive observables. On the phenomenological side, a description of the Drell-Yan production at the hand of CCFM-K-evolved distributions was recently proposed [326].…”

Section: Closing Statementsmentioning

confidence: 99%

Hunting BFKL in semi-hard reactions at the LHC

Celiberto

2021

Eur. Phys. J. C

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The agreement between calculations inspired by the resummation of energy logarithms, known as BFKL approach, and experimental data in the semi-hard sector of QCD has become manifest after a wealthy series of phenomenological analyses. However, the contingency that the same data could be concurrently portrayed at the hand of fixed-order, DGLAP-based calculations, has been pointed out recently, but not yet punctually addressed. Taking advantage of the richness of configurations gained by combining the acceptances of CMS and CASTOR detectors, we give results in the full next-to-leading logarithmic approximation of cross sections, azimuthal correlations and azimuthal distributions for three distinct semi-hard processes, each of them featuring a peculiar final-state exclusiveness. Then, making use of disjoint intervals for the transverse momenta of the emitted objects, i.e. $$\kappa $$ κ -windows, we clearly highlight how high-energy resummed and fixed-order driven predictions for semi-hard sensitive observables can be decisively discriminated in the kinematic ranges typical of current and forthcoming analyses at the LHC. The scale-optimization issue is also introduced and explored, while the uncertainty coming from the use of different PDF and FF set is deservedly handled. Finally, a brief overview of , a numerical tool recently developed, suited for the computation of inclusive semi-hard reactions is provided.

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Section: Closing Statementsmentioning

confidence: 99%

Hunting BFKL in semi-hard reactions at the LHC

Celiberto

2021

Eur. Phys. J. C

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“…The exponent λ s is found to be ≃ 0.33 in Refs. [34][35]. It can be recasted into the symbolic form as…”

Section: Methodsmentioning

confidence: 99%

“…where λ g ≃ 0.43 [22][23][34][35]. Based on the hardpomeron behavior for the distribution functions, let us put Eqs.…”

Section: Methodsmentioning

confidence: 99%

Longitudinal structure function from the parton parameterization

Rezaei,

Boroun

2019

Preprint

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We present a set of formulas to extract the longitudinal structure function from the proton structure function and its derivatives with respect to lnQ 2 in the next-to-next-to-leading order of the perturbative theory at low x based on a hard poemron exchange. The behavior of the DIS cross section ratio R(x, Q 2 ) and the ratio FL(x, Q 2 )/F2(x, Q 2 ) studied and compared with the experimental data, also these behaviors controlled by the color dipole model bound. These results show a good agreement with the DIS experimental data throughout the low values of x. These results within the next-to-next-to-leading order approximation at very low x can be applied in the LHeC region for analyses of ultra-high energy processes.

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“…The singlet exponent λ s is found to be ≃ 0.33 in Refs. [22][23] and the gluon exponent λ g is found to be ≃ 0.43 [4,18,23]. Therefore the gluon distribution function is defined by the following form…”

Section: Analytical Treatment Of the Gluon Distribution Functionmentioning

confidence: 99%

The study of the gluon distribution function and reduced cross section behavior using the proton structure function

Rezaei,

Boroun

2019

Preprint

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We present a set of formulas to extract the gluon distribution function and the reduced cross section from the proton structure function and its derivatives with respect to lnQ 2 in the next-tonext-to-leading order of the perturbative theory at low x based on a hard poemron exchange. The behavior of the DIS reduced cross section studied and compared with the experimental data, also these behaviors controlled by the nonlinear and higer twist corrections at low Q 2 . These results were augmented by including an additional higher-twist term in the description of the nonlinear correction. This additional term, modified nonlinear correction, improves the description of the reduced cross sections significantly at low values of Q 2 . Our calculations show a good agreement with the DIS experimental data throughout the low values of x. We discuss, furthermore, how this behavior can be determine the reduced cross section with respect to the proton parameterization at high-y values. These results within the next-to-next-to-leading order approximation at very low x can be applied in the LHeC and FCC-eh regions for analyses of ultra-high energy processes. The resulting predictions for σr suggest that further corrections are required for Q 2 less than about 3 GeV 2 .

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Drell–Yan production with the CCFM-K evolution

Cited by 14 publications

References 69 publications

Hunting BFKL in semi-hard reactions at the LHC

Hunting BFKL in semi-hard reactions at the LHC

Longitudinal structure function from the parton parameterization

The study of the gluon distribution function and reduced cross section behavior using the proton structure function

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