Direct Measurement of the Pion Valence-Quark Momentum Distribution, the Pion Light-Cone Wave Function Squared

Aitala, E. M.; Amato, S.; Anjos, J. C.; Appel, J. A.; Ashery, D.; Banerjee, S.; Bediaga, I.; Blaylock, G.; Bracker, S. B.; Burchat, P. R.; Burnstein, R. A.; Carter, Thomas; Carvalho, H. S.; Copty, N.; Cremaldi, L.; Darling, C.; Denisenko, K.; Deval, S.; Fernández, A.; Fox, G. F.; Gagnon, P.; Gerzon, S.A.; Göbel, C.; Gounder, K.; Halling, A. M.; Herrera, G.; Hurvits, G.; James, C.; Kasper, P. A.; Kwan, S.; Langs, D. C.; Leslie, J. R.; Lichtenstadt, J.; Lundberg, B.; MayTal‐Beck, S.; Meadows, B.; Neto, J. R. T. de Mello; Mihalcea, D.; Milburn, R. H.; Miranda, J. M. De; Napier, A.; Nguyen, A.; D’Oliveira, A.; O’Shaughnessy, K.; Peng, K.C.; Perera, L. P.; Purohit, M.; Quinn, B.; Radeztsky, S.; Rafatian, A.; Reay, N. W.; Reidy, J.; Reis, A. C. dos; Rubin, H. A.; Sanders, D. A.; Santha, A.K.S.; Santoro, A. F. S.; Schwartz, A. J.; Sheaff, M.; Sidwell, R. A.; Slaughter, A. J.; Sokoloff, M. D.; Solano, J.; Stanton, N. R.; Stefanski, R. J.; Stenson, K.; Summers, D. J.; Takach, S.; Thorne, K. A.; Tripathi, A.; Watanabe, Shuji; Weiss-Babai, R.; Wiener, J.; Witchey, N.; Wolin, E.; Yang, S.; Duan, Yi; Yoshida, S.; Zaliznyak, R.; Zhang, C.

doi:10.1103/physrevlett.86.4768

Cited by 113 publications

(76 citation statements)

References 18 publications

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“…These two examples share strong similarities in the soft gluon radiation contributions and we will compare our resummation formula to existing data from the E791 experiment [33,34]. This will provide a benchmark test to assess the applicability of our approach to diffractive dijet production at the EIC.…”

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confidence: 94%

“…We now turn to the jet transverse momentum dependence of the coherent diffractive events, where we show 2. Comparisons of the Sudakov effects in the total transverse momentum q ⊥ distribution (upper) and jet transverse momentum P ⊥ distribution (lower) for the diffractive dijet production in π-induced scattering on the nuclear target of Platinum with the experimental data from E791 Collaboration [33,34]. The normalizations are arbitrary in the comparisons.…”

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confidence: 99%

“…2. The experimental data are obtained by integrating over q 2 ⊥ up to 0.015 GeV 2 [33,34]. Because the P ⊥ -and q ⊥ -dependence are separated in Eq.…”

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confidence: 99%

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QCD resummation in hard diffractive dijet production at the electron-ion collider

et al. 2020

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Diffractive dijet production at the electron-ion collider (EIC) has been proposed to study the gluon Wigner distribution at small-x. We investigate the soft gluon radiation associated with the final state jets and an all order resummation formula is derived. We show that the soft gluon resummation plays an important role to describe E791 data on π-induced diffractive dijet production at Fermilab. Predictions for the EIC are presented, and we emphasize that the soft gluon resummation is an important aspect to explore the nucleon/nucleus tomography through these processes.

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confidence: 94%

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confidence: 99%

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QCD resummation in hard diffractive dijet production at the electron-ion collider

et al. 2020

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“…For the pion PDA, Refs. [72,73] provide experimental results. A selection of theoretical calculations of the pion and the kaon PDAs can be found in Refs.…”

Section: Introductionmentioning

confidence: 99%

Basis light front quantization for the charged light mesons with color singlet Nambu–Jona-Lasinio interactions

2019

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We apply the basis light front quantization (BLFQ) approach to describe the valence structures of the charged light meson ground states. Specifically, the light front wavefunctions of π ± , ρ ± , K ± , and K * ± are obtained as the eigenvectors of the light front effective Hamiltonians with confinement potentials supplemented by the color singlet Nambu-Jona-Lasinio (NJL) interactions. We adjust our model such that the spectrum of these ground states and the charge radii of the pseudoscalar states agree with experimental results. We present the elastic form factors and parton distribution amplitudes (PDAs) as illustrations of the internal structures of the pseudoscalar pions and kaons in terms of valence quarks.

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“…Finally, we shall also go beyond the previous pion analysis by two of us in Ref. [16] by taking into account QCD evolution that allows us to compare our predictions for the holographic pion parton distribution function (PDF) and parton distribution amplitude (PDA) with the data from the E615 [23] and E791 [24] Collaborations respectively. In particular, we shall perform fits to the E615 data in order to determine the low hadronic scale (which was left unspecified in Ref.…”

Section: Introductionmentioning

confidence: 99%

Dynamical spin effects in the holographic light-front wavefunctions of light pseudoscalar mesons

2018

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We quantify the importance of dynamical spin effects in the holographic light-front wavefunctions of the pion, kaon, η and η ′ . Using a universal AdS/QCD scale and constituent quark masses, we find that such effects are maximal in the pion where they lead to an excellent simultaneous description of a wide range of data: the decay constant, charge radius, spacelike EM and transition form factors, as well as, after QCD evolution, both the parton distribution function and the parton distribution amplitude data from Fermilab. These dynamical spin effects lead up to a 30% chance of finding the valence quark and antiquark with aligned spins in the pion. The situation is very different for the kaon, where a simultaneous description of the available data (decay constant, radius and spacelike EM form factor) prefer no dynamical spin effects at all. The situation is less clear for the η and η ′ : while their radiative decay widths data are consistent with dynamical spin effects only in η ′ , the data on their spacelike transition form factors clearly favor maximal dynamical spin effects in both mesons.

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Direct Measurement of the Pion Valence-Quark Momentum Distribution, the Pion Light-Cone Wave Function Squared

Cited by 113 publications

References 18 publications

QCD resummation in hard diffractive dijet production at the electron-ion collider

QCD resummation in hard diffractive dijet production at the electron-ion collider

Basis light front quantization for the charged light mesons with color singlet Nambu–Jona-Lasinio interactions

Dynamical spin effects in the holographic light-front wavefunctions of light pseudoscalar mesons

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