Coincidence Electroproduction of Charged Pions and the Pion Form Factor

Brown, C. N.; Canizares, C. R.; Cooper, W. E.; Eisner, A. M.; Feldman, G. J.; Lichtenstein, C. A.; Litt, L.; Lockeretz, W.; Montana, V. B.; Pipkin, F. M.

doi:10.1103/physrevd.8.92

Cited by 108 publications

(67 citation statements)

References 40 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…1. Using the central values tabulated in tables 1-4, we see that we are able to use up to three space-like constraint with the data from Bebek et al [10] and the recent data from Tadevosyan et al [16], while we are able to incorporate only two space-like constraints with the data from Brown et al [9] and one with the data from Amendolia et al [15]. The best estimate for the bounds on the Taylor coefficient c and d is obtained for the data from Bebek et al [10].…”

Section: Resultsmentioning

confidence: 69%

“…In sec. 3 we present our results using data from [8], [9], [10] and more recent data from [15] and [16]. We present a detailed discussion of our results and our conclusions in sec.…”

Section: Introductionmentioning

confidence: 77%

“…These have been reported in electroproduction experiments conducted in the 1970's (see refs. [8], [9], [10]). Raina and Singh [11] used this information to produce improved bounds on the muon anomaly (see also [12]).…”

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Constraining the low-energy pion electromagnetic form factor with spacelike data

Ananthanarayan

Ramanan

2008

Eur. Phys. J. C

View full text Add to dashboard Cite

Abstract. The pionic contribution to the g − 2 of the muon involves a certain integral over the the modulus squared of Fπ(t), the pion electromagnetic form factor. We extend techniques that use cutplane analyticity properties of Fπ(t) in order to account for present day estimates of the pionic contribution and experimental information at a finite number of points in the space-like region. Using data from several experiments over a large kinematic range for |t|, we find bounds on the expansion coefficients of Fπ(t), sub-leading to the charge radius. The value of one of these coefficients in chiral perturbation theory respects these bounds. Furthermore, we present a sensitivity analysis to the inputs. A brief comparison with results in the literature that use observables other than the g − 2 and timelike data is presented.

show abstract

Section: Resultsmentioning

confidence: 69%

“…In sec. 3 we present our results using data from [8], [9], [10] and more recent data from [15] and [16]. We present a detailed discussion of our results and our conclusions in sec.…”

Section: Introductionmentioning

confidence: 77%

See 1 more Smart Citation

Constraining the low-energy pion electromagnetic form factor with spacelike data

Ananthanarayan

Ramanan

2008

Eur. Phys. J. C

View full text Add to dashboard Cite

show abstract

“…and then q ⊥ → − q ⊥ for equation (39). We can extend our discussion to the γ * π 0 → ω 0 transition.…”

Section: Numerical Results and Discussionmentioning

confidence: 76%

“…and F γ * π→ρ (Q 2 ) are physically different in equations (39) and (35), figure 3 indicates that they are numerically identical at very high precision, which implies that F ργ * →π (Q 2 ) and F γ * π→ρ (Q 2 ) have the same Q 2 dependence. The identification of equations (35) Figure 3.…”

Section: Numerical Results and Discussionmentioning

confidence: 93%

Space-like and time-like pion–rho transition form factors in the light-cone formalism

Xiao

2007

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

View full text Add to dashboard Cite

Abstract.Having calculated the light-cone wave function of the pseudoscalar meson by using two equivalent and fully covariant methods, we generalize such methods to the valence Fock states of the vector meson in the light-cone formalism. We investigate the decay constant of the ρ meson fρ, the γ * π → ρ and γ * ρ → π transition form factors and especially the transition magnetic moments. By using two groups of constraint parameters, we predict the space-like and timelike form factors Fπρ(Q 2 ) and Fρπ(Q 2 ) at low and moderate energy scale and the electromagnetic radius of these transition processes. In addition, we extend our calculation to γ * π → ω space-like and time-like form factors by using the same sets of parameters.

show abstract

Deep inside the pion. Reconciling QCD theory with data

Bakulev¹,

Михайлов²,

Stefanis³

2004

Ann. Phys.

View full text Add to dashboard Cite

Recent developments in the QCD description of the pion structure are reviewed. The CLEO pion-photon transition data analysis favors a distribution amplitude for the pion that is double-humped but endpoint-suppressed. After a short outline of the derivation of this amplitude from QCD sum rules with nonlocal condensates, we present the fully fledged analysis of the CLEO data prefaced by predictions for the $F^{\gamma\rho\pi}$ form factor and commenting on the inherent theoretical uncertainties due to higher twists and NNLO perturbative corrections. We supplement our discussion by considering within QCD factorization theory, the electromagnetic pion form factor at NLO accuracy on one hand, and diffractive di-jets production on the other, comparing our predictions with the respective experimental data from JLab and the Fermilab E791 collaboration. In all cases, the agreement is impressive.Comment: 10 pages, 5 figures consisting of 8 eps files. Contribution to the Festschrift on the occasion of Klaus Goeke's 60th birthday, to appear in Annalen der Physi

show abstract

Coincidence Electroproduction of Charged Pions and the Pion Form Factor

Cited by 108 publications

References 40 publications

Constraining the low-energy pion electromagnetic form factor with spacelike data

Constraining the low-energy pion electromagnetic form factor with spacelike data

Space-like and time-like pion–rho transition form factors in the light-cone formalism

Deep inside the pion. Reconciling QCD theory with data

Contact Info

Product

Resources

About