Exclusive electroproduction of pion pairs

Abstract

We investigate electroproduction of pion pairs on the nucleon in the framework of QCD factorization for hard exclusive processes. We extend previous analyses by taking the hard-scattering coefficients at next-to-leading order in ${\alpha }_s$. The dynamics of the produced pion pair is described by two-pion distribution amplitudes, for which we perform a detailed theoretical and phenomenological analysis. In particular, we obtain constraints on these quantities by comparing our results with measurements of angular observables that are sensitive to the interference between two-pion production in the isoscalar and isovector channels.

References in corpus (43)

• Gauge-Invariant Decomposition of Nucleon Spin and Its Spin-Off
• Wave Functions, Evolution Equations and Evolution Kernels from Light-Ray Operators of QCD
• Generalized Parton Distributions
• Nonforward Parton Distributions
• Unraveling hadron structure with generalized parton distributions
• Hard Exclusive Reactions and the Structure of Hadrons
• Factorization for hard exclusive electroproduction of mesons in QCD
• Impact Parameter Dependent Parton Distributions and Off-Forward Parton Distributions for $\zeta \to 0$
• Scaling Limit of Deeply Virtual Compton Scattering
• Skewed and double distributions in pion and nucleon
• Deeply virtual electroproduction of photons and mesons on the nucleon : leading order amplitudes and power corrections
• The $\rho$ Meson Light-Cone Distribution Amplitudes of Leading Twist Revisited
• Physical Gluons and High $E_T$ Jets
• Probing partonic structure in gamma* gamma -> pi pi near threshold
• Pionic Parton Distributions Revisited
• Hard exclusive electroproduction of two pions and their resonances
• Effective Field Theory Description of the Pion Form Factor
• Evolution and models for skewed parton distributions
• Exclusive production of pion pairs in gamma^* gamma collisions at large Q^2
• Moments of pseudoscalar meson distribution amplitudes from the lattice
• DVCS on the nucleon : study of the twist-3 effects
• Lattice Calculation of the Strangeness Magnetic Moment of the Nucleon
• The vector form factor of the pion from unitarity and analyticity: a model-independent approach
• Scalar form factors of light mesons
• Pomeron-Odderon interference effects in electroproduction of two pions
• Tagging the pion quark structure in QCD
• Generalized Parton Distributions for large $x$
• Hard exclusive meson production at next-to-leading order
• Vector meson electroproduction at next-to-leading order
• The pion-pion scattering amplitude. II: Improved analysis above $\bar{K}K$ threshold
• Generalized parton distributions for the pion in chiral perturbation theory
• Hard diffractive electroproduction of two pions
• NLO corrections and contribution of a tensor gluon operator to the process ${\gamma }^{\ast }\gamma \to \pi \pi$
• Angular distributions in hard exclusive production of pion pairs
• Hard Leptoproduction of Charged Vector Mesons
• Masses and couplings of vector mesons from the pion electromagnetic, weak, and πγtransition form factors
• Reconclining phi radiative decays with other data for a0(980), fo(980), pi-pi -> KK and pi-pi -> eta-eta
• Proof of factorization for electroproduction of multiple mesons and exclusive ${\gamma }^{\ast }\gamma$ production of multiple hadrons
• Pion Form Factor Phase, PIon Pion Elasticity and New Electron-Positron Data
• Quarks vs. gluons in exclusive rho electroproduction
• Nucleon structure from generalized parton distributions in lattice QCD
• Renormalons in exclusive meson electroproduction
• A Numerical Analysis to the {$\pi$} and {K} Coupled--Channel Scalar Form-factor

Cited by in corpus (7)

• Diffractive Electroproduction of rho and phi Mesons at HERA
• Hadron tomography by generalized distribution amplitudes in pion-pair production process ${\gamma }^{\ast }\gamma \to {\pi }^0{\pi }^0$ and gravitational form factors for pion
• Dispersive evaluation of the D-term form factor in deeply virtual Compton scattering
• Vector meson production from a polarized nucleon
• Hard Pomeron-Odderon interference effects in the production of pi^+pi^- pairs in high energy gamma-gamma collisions at the LHC
• Hard exclusive neutrino production of a light meson
• Revealing chiral-odd two-meson generalized distribution amplitudes in $e^{-}{e}^{+}\to (\pi \pi )(\pi \pi )$ reactions