Nuclear medium effects in Drell–Yan process

Haider, H.; Athar, M. Sajjad; Singh, Sweta; Simó, I. Ruiz

doi:10.1088/1361-6471/aa60ea

Cited by 11 publications

(15 citation statements)

References 65 publications

(255 reference statements)

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“…They have applied their model to study medium effects in extracting sin 2 θ W using the Paschos-Wolfenstein relation [71]. This model has been applied successfully to study the Drell-Yan processes [74] and parity violating asymmetry with nuclear medium effects using polarized electron beam( e) [73].…”

Section: Resultsmentioning

confidence: 99%

Neutrino(antineutrino)–nucleus interactions in the shallow- and deep-inelastic scattering regions

Athar

Morfín

2021

J. Phys. G: Nucl. Part. Phys.

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In ν/ν-Nucleon/Nucleus interactions Shallow Inelastic Scattering (SIS) is technically defined in terms of the four-momentum transfer to the hadronic system as non-resonant meson production with Q 2 1 GeV 2. This non-resonant meson production intermixes with resonant meson production in a regime of similar effective hadronic mass W of the interaction. As Q 2 grows and surpasses this ≈ 1 GeV 2 limit, non-resonant interactions begin to take place with quarks within the nucleon indicating the start of Deep Inelastic Scattering (DIS). To essentially separate this resonant plus non-resonant meson production from DIS quark-fragmented meson production, a cut of 2 GeV in W of the interactions is generally introduced. However, since experimentally mesons from resonance decay cannot be separated from non-resonant produced mesons, SIS for all practical purposes in this review has been defined as inclusive meson production that includes non-resonant plus resonant meson production and the interference between them. Experimentally then for W 2 GeV inclusive meson production with W (M N + M π) and all Q 2 is here defined as SIS, while for W 2 GeV, the kinematic region with Q 2 1 GeV 2 is defined as DIS. The so defined SIS and DIS regions have received varying degrees of attention from the community. While the theoretical / phenomenological study of ν-nucleon and ν-nucleus DIS scattering is advanced, such studies of a large portion of the SIS region, particularly the SIS to DIS transition region, have hardly begun. Experimentally, the SIS and the DIS regions for ν-nucleon scattering have minimal results and only in the experimental study of the ν-nucleus DIS region are there significant results for some nuclei. Since current and future neutrino oscillation experiments have contributions from both higher W SIS and DIS kinematic regions and these regions are in need of both considerable theoretical and experimental study, this review will concentrate on these SIS to DIS transition and DIS kinematic regions surveying our knowledge and the current challenges.

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Section: Resultsmentioning

confidence: 99%

Neutrino(antineutrino)–nucleus interactions in the shallow- and deep-inelastic scattering regions

Athar

Morfín

2021

J. Phys. G: Nucl. Part. Phys.

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“…and because of the strong attractive nature of the nucleon-nucleon interaction, the probability of a W ± -boson interaction with the mesonic cloud becomes high. We have discussed the π and ρ meson contributions in our earlier works [3][4][5]31,33]. The contribution from heavier mesons like ω meson are expected to be very small due to their significantly higher masses.…”

Section: Effect Of Mesonic Cloud Contributionmentioning

confidence: 97%

Deep inelastic (anti)neutrino–nucleus scattering

Ansari

Athar

Haider

et al. 2021

Eur. Phys. J. Spec. Top.

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“…For the evaluation of the weak nuclear structure functions not much theoretical efforts have been made except that of Kulagin et al [40,41] and Athar et al (Aligarh-Valencia group) [30][31][32][33][34][35][36][37][38][39]. Aligarh-Valencia group has studied nuclear medium effects in the structure functions in a microscopic model which uses relativistic nucleon spectral function to describe the target nucleon momentum distribution incorporating the effects of Fermi motion, binding energy and nucleon correlations in a field theoretical model.…”

Section: Formalismmentioning

confidence: 99%

“…However, some recent work has been done to discuss the nuclear medium effects in the cross sections and polarization of τ leptons produced in the ν τ induced quasielastic scattering [28,29] but not in the case of deep inelastic scattering induced by ν τ . This is in contrast to the study of the deep inelastic scattering induced by the electron neutrinos (ν e ) and muon neutrinos (ν µ ) from nuclei in which the nuclear medium effects have been studied extensively [30][31][32][33][34][35][36][37][38][39][40][41]. Our aim in this paper is to study the nuclear medium effects in the deep inelastic scattering of tau neutrinos off nucleus in general and apply it to the 40 Ar nucleus in the energy region relevant for the DUNE experiment.…”

Section: Introductionmentioning

confidence: 99%

Nuclear medium effects in the deep inelastic $ν_τ/\barν_τ-^{40}Ar$ scattering at DUNE energies

Zaidi,

Ansari,

Athar

et al. 2021

Preprint

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The nuclear medium effects are studied in the ντ /ντ interactions from nuclei in the deep inelastic scattering (DIS) region and applied to the 40 Ar nucleus to obtain the scattering cross sections in the energy region of the proposed DUNE experiment. The free nucleon structure functions (FiN (x, Q 2 ); (i = 1 − 5)) have been calculated at the next-to-leading order (NLO) using Martin-Motylinski-Harland Lang-Thorne (MMHT) 2014 as well as The Coordinated Theoretical-Experimental Project on QCD (CTEQ6.6) parameterizations for parton distribution functions (PDFs) and including the effect of perturbative and nonperturbative QCD corrections [1]. These free nucleon structure functions are then convoluted with the nucleon spectral function in the nucleus to obtain the nuclear structure functions (FiA(x, Q 2 ); (i = 1 − 5)). The nucleon spectral function takes into account the Fermi motion and the binding energy of the nucleons as well as the nucleon correlations within the nucleus. These nuclear structure functions are then used to calculate the deep inelastic scattering cross sections. Moreover, the contribution of π and ρ mesons as well as the corrections due to the shadowing and antishadowing effects in the relevant kinematic region of the Bjorken variable x are also included. The numerical results for the cross sections have been presented and compared with the results obtained in the phenomenological approach using nuclear structure functions from nCTEQnu.

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Nuclear medium effects in Drell–Yan process

Cited by 11 publications

References 65 publications

Neutrino(antineutrino)–nucleus interactions in the shallow- and deep-inelastic scattering regions

Neutrino(antineutrino)–nucleus interactions in the shallow- and deep-inelastic scattering regions

Deep inelastic (anti)neutrino–nucleus scattering

Nuclear medium effects in the deep inelastic $ν_τ/\barν_τ-^{40}Ar$ scattering at DUNE energies

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