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Bebek, C.; Brown, C. N.; Herzlinger, M.; Holmes, S.; Lichtenstein, C. A.; Pipkin, F. M.; Sisterson, L. K.; Andrews, D.; Berkelman, K.; Cassel, D. G.; Hartill, D. L.

doi:10.1103/physrevd.9.1229

Cited by 94 publications

(60 citation statements)

References 9 publications

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“…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%

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

Ananthanarayan

Ramanan

2008

Eur. Phys. J. C

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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.

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“…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%

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

Ananthanarayan

Ramanan

2008

Eur. Phys. J. C

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“…(17). With these form factors of different polarized initial and final states and the relations in Eq.…”

Section: ρ Meson Electromagnetic Form Factormentioning

confidence: 99%

“…[1][2][3]. The transition and the electromagnetic form factors of the pseudoscalar mesons, especially the pion meson as the lightest QCD bound state, attracted the most attentions theoretically [4][5][6][7][8][9][10][11][12][13][14][15][16] and experimentally [17][18][19]. The transition form factors between the pseudoscalar and vector mesons are also investigated by employing rather different approaches [20][21][22][23][24][25], the resulted theoretical predictions however are self-consistent and comparable from each other.…”

Section: Introductionmentioning

confidence: 99%

ργ*→π(ρ)transition form factors in the perturbative QCD factorization approach

et al. 2015

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In this paper, we studied the ργ * → π and ργ * → ρ transition processes and made the calculations for the ρπ transition form factor Q 4 F ρπ (Q 2 ) and the ρ meson electromagnetic form factors, F LL,LT,TT (Q 2 ) and F 1,2,3 (Q 2 ), by employing the perturbative QCD (PQCD) factorization approach. For the ργ * → π transition, we found that the contribution to form factor Q 4 F ρπ (Q) from the term proportional to the distribution amplitude combination φ T ρ (x 1 )φ P π (x 2 ) is absolutely dominant, and the PQCD predictions for both the size and the Q 2 -dependence of this form factor Q 4 F ρπ (Q 2 ) agree well with those from the extended ADS/QCD models or the light-cone QCD sum rule. For the ργ * → ρ transition and in the region of Q 2 ≥ 3 GeV 2 , further more, we found that the PQCD predictions for the magnitude and their Q 2 -dependence of the F 1 (Q 2 ) and F 2 (Q 2 ) form factors agree well with those from the QCD sum rule, while the PQCD prediction for F 3 (Q 2 ) is much larger than the one from the QCD sum rule.

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“…The pion form factor data for space-like values of q 2 is taken from references (41) to (44). In all cases the pion form factor has been deduced from the pion eiectroproduction reaction, ep+e1T+n.…”

Section: Pion Datamentioning

confidence: 99%

Electromagnetic form factors of hadrons

Zidell

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Further measurements of forward-charged-pion electroproduction at largek2

Cited by 94 publications

References 9 publications

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

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

ργ*→π(ρ)transition form factors in the perturbative QCD factorization approach

Electromagnetic form factors of hadrons

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