Extraction of partonic transverse momentum distributions from semi-inclusive deep-inelastic scattering, Drell-Yan and Z-boson production

Bacchetta, Alessandro; Delcarro, Filippo; Pisano, Cristian; Radici, Marco; Signori, Andrea

doi:10.1007/jhep06(2017)081

Cited by 214 publications

(257 citation statements)

References 121 publications

Supporting

Mentioning

251

Contrasting

Order By: Relevance

“…[2,25,39]. While this choice looks natural, it has some serious drawback which undermines its stability.…”

Section: ζ Prescriptionmentioning

confidence: 99%

“…realizations used in refs. [1,11,25,39,41,42]. In this way the traditional implementation of the TMD cross-section contains four renormalization scale entries of the perturbative series and consequently four scales µ.…”

Section: Jhep08(2018)003mentioning

confidence: 99%

“…It is especially important nowadays when big efforts are running to join a large amount of data coming from semi-inclusive DIS and Drell-Yan [39] or when one wants to include new LHC data, characterized by a great precision [1]. It is time to tackle the problem of the stability of the matching of the perturbative and non-perturbative parts of TMD factorization formalism.…”

Section: Jhep08(2018)003mentioning

confidence: 99%

See 2 more Smart Citations

Systematic analysis of double-scale evolution

Scimemi

Vladimirov

2018

J. High Energ. Phys.

164

View full text Add to dashboard Cite

Often the factorization of differential cross sections results in the definition of fundamental hadronic functions/distributions which have a double-scale evolution, as provided by a pair of coupled equations. Typically, the two scales are the renormalization and rapidity scales. The two-dimensional structure of their evolution is the object of the present study. In order to be more specific, we consider the case of the transverse momentum dependent distributions (TMD). Nonetheless, most of our findings can be used with other double-scale parton distributions. On the basis of the two-dimensional structure of TMD evolution, we formulate the general statement of the ζ-prescription introduced in [1], and we define an optimal TMD distribution, which is a scaleless model-independent universal non-perturbative function. Within this formulation the non-perturbative definition of the distribution is disentangled from the evolution, which clarifies the separation of perturbative and non-perturbative effects in the phenomenology. A significant part of this work is devoted to the study of the effects of truncation of perturbation theory on the double-scale evolution. We show that within truncated perturbation theory the solution of evolution equations is ambiguous and this fact generates extra uncertainties within the resummed cross-section. The alternatives to bypass this issue are discussed. Finally, we discuss the sources and distribution of the scale variation uncertainties.

show abstract

“…[2,25,39]. While this choice looks natural, it has some serious drawback which undermines its stability.…”

Section: ζ Prescriptionmentioning

confidence: 99%

Section: Jhep08(2018)003mentioning

confidence: 99%

Section: Jhep08(2018)003mentioning

confidence: 99%

See 1 more Smart Citation

Systematic analysis of double-scale evolution

Scimemi

Vladimirov

2018

J. High Energ. Phys.

164

View full text Add to dashboard Cite

show abstract

“…A matching procedure must be introduced to combine the perturbative calculation at small b with the nonperturbative fits at large b. [43,44]. In this work we adopt the original prescription introduced in Ref.…”

Section: A the Spin-averaged Differential Cross Sectionmentioning

confidence: 99%

Sivers asymmetry in the pion induced Drell-Yan process at COMPASS within transverse momentum dependent factorization

Wang¹,

Lü²

2018

Phys. Rev. D

View full text Add to dashboard Cite

We investigate the Sivers asymmetry in the pion-induced single polarized Drell-Yan process in the theoretical framework of the transverse momentum dependent factorization up to next-to-leading logarithmic order of QCD. Within the TMD evolution formalism of parton distribution functions, the recently extracted nonperturbative Sudakov form factor for the pion distribution functions as well as the one for the Sivers function of the proton are applied to numerically estimate the Sivers asymmetry in the π − p Drell-Yan at the kinematics of the COMPASS at CERN. In the low b region, the Sivers function in b-space can be expressed as the convolution of the perturbatively calculable hard coefficients and the corresponding collinear correlation function, of which the Qiu-Sterman function is the most relevant one. The effect of the energy-scale dependence of the Qiu-Sterman function to the asymmetry is also studied. We find that our prediction on the Sivers asymmetries as functions of x p , x π , x F and q ⊥ is consistent with the recent COMPASS measurement.

show abstract

“…On the other side, global fits of DY production at different energies have given access to the non perturbative proton transverse structure [12,13]. Both aspects have received increasing attention due to the formalisation of new and old concepts in the TMD language [14][15][16][17]. While there are differences between the language used in the modern and the older TMD approaches, physical results should not depend on it.…”

Section: Introductionmentioning

confidence: 99%

Pion nucleus Drell–Yan process and parton transverse momentum in the pion

Ceccopieri¹,

Courtoy²,

Noguera³

et al. 2018

Eur. Phys. J. C

View full text Add to dashboard Cite

We present a thorough analysis of unpolarized Drell-Yan (DY) pair production in pion-nucleus scattering. On the nucleus side, we use nuclear parton distributions along with parametrisations of the nucleon partonic transverse distribution available in the literature. Partonic longitudinal and transverse distributions of the pion are those obtained in a recent calculation in a Nambu-Jona Lasinio (NJL) framework, with Pauli-Villars regularization. The scale of the NJL model is determined with a minimisation procedure comparing NLO predictions based on NJL evolved pion distributions to rapidity differential DY cross sections data. The resulting distributions are then used to describe, up to next-to-leading logarithmic accuracy, the transverse momentum spectrum of dilepton pairs up to a transverse momentum of 2 GeV. With no additional parameters, fair agreement is found with available pion-nucleus data, confirming the virtues of the NJL description of pion parton structure. We find sizable evolution effects on the shape of the distributions and on the generated average transverse momentum of the dilepton pair. We furthermore discuss the possibility of gaining information about the behavior of the pion unpolarized transverse momentum dependent parton distribution from pion nucleus DY data.

show abstract

Extraction of partonic transverse momentum distributions from semi-inclusive deep-inelastic scattering, Drell-Yan and Z-boson production

Cited by 214 publications

References 121 publications

Systematic analysis of double-scale evolution

Systematic analysis of double-scale evolution

Sivers asymmetry in the pion induced Drell-Yan process at COMPASS within transverse momentum dependent factorization

Pion nucleus Drell–Yan process and parton transverse momentum in the pion

Contact Info

Product

Resources

About