Measurements of the Δ (1232) transition form factor and the ratio σn/σp from inelastic electron-proton and electron-deuteron scattering

L. M. Stuart; P. E. Bosted; L. Andivahis; A. Lung; J. Alster; R. G. Arnold; C. C. Chang; F. S. Dietrich; W. R. Dodge; R. Gearhart; J. Gomez; K. A. Griffioen; R. S. Hicks; C. E. Hyde-Wright; C. Keppel; S. E. Kuhn; J. Lichtenstadt; R. A. Miskimen; G. A. Peterson; G. G. Petratos; S. E. Rock; S. H. Rokni; W. K. Sakumoto; M. Spengos; K. Swartz; Z. Szalata; L. H. Tao

doi:10.1103/PhysRevD.58.032003

Measurements of the Δ (1232) transition form factor and the ratio σ_n/σ_p from inelastic electron-proton and electron-deuteron scattering

L. M. Stuart^*, P. E. Bosted, L. Andivahis, A. Lung, J. Alster, R. G. Arnold, C. C. Chang, F. S. Dietrich, W. R. Dodge, R. Gearhart, J. Gomez, K. A. Griffioen, R. S. Hicks, C. E. Hyde-Wright, C. Keppel, S. E. Kuhn, J. Lichtenstadt, R. A. Miskimen, G. A. Peterson, G. G. PetratosS. E. Rock, S. H. Rokni, W. K. Sakumoto, M. Spengos, K. Swartz, Z. Szalata, L. H. Tao

^*Corresponding author for this work

School of Physics and Astronomy

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42 Scopus citations

Abstract

Measurements of inclusive electron-scattering cross sections using hydrogen and deuterium targets in the region of the Δ(1232) resonance are reported. A global fit to these new data and previous data in the resonance region is also reported for the proton. Transition form factors have been extracted from the proton cross sections for this experiment over the four-momentum transfer squared range 1.64<Q²<6.75 (GeV/c)² and from previous data over the range 2.41<Q²<9.82 (GeV/c)². The results confirm previous reports that the Δ(1232) transition form factor decreases more rapidly with Q² than expected from perturbative QCD. The ratio of σ_n/σ_p in the Δ(1232) resonance region has been extracted from the deuteron data for this experiment in the range 1.64<Q²<3.75 (GeV/c)² and fora previous experiment in the range 2.4<Q²<7.9 (GeV/c)². A study has been made of the model dependence of these results. This ratio σ_nσ_p for Δ(1232) production is slightly less than unity, while σ_n/σ_p for the nonresonant cross sections is approximately 0.5, which is consistent with deep inelastic scattering results.

Original language	English
Article number	032003
Pages (from-to)	320031-3200316
Number of pages	16
Journal	Physical Review D - Particles, Fields, Gravitation and Cosmology
Volume	58
Issue number	3
DOIs	https://doi.org/10.1103/PhysRevD.58.032003
State	Published - 1 Aug 1998

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Stuart, L. M., Bosted, P. E., Andivahis, L., Lung, A., Alster, J., Arnold, R. G., Chang, C. C., Dietrich, F. S., Dodge, W. R., Gearhart, R., Gomez, J., Griffioen, K. A., Hicks, R. S., Hyde-Wright, C. E., Keppel, C., Kuhn, S. E., Lichtenstadt, J., Miskimen, R. A., Peterson, G. A., ... Tao, L. H. (1998). Measurements of the Δ (1232) transition form factor and the ratio σ_n/σ_p from inelastic electron-proton and electron-deuteron scattering. Physical Review D - Particles, Fields, Gravitation and Cosmology, 58(3), 320031-3200316. Article 032003. https://doi.org/10.1103/PhysRevD.58.032003

@article{b7c68fcb43b0417ab85f9c540834de21,

title = "Measurements of the Δ (1232) transition form factor and the ratio σn/σp from inelastic electron-proton and electron-deuteron scattering",

abstract = "Measurements of inclusive electron-scattering cross sections using hydrogen and deuterium targets in the region of the Δ(1232) resonance are reported. A global fit to these new data and previous data in the resonance region is also reported for the proton. Transition form factors have been extracted from the proton cross sections for this experiment over the four-momentum transfer squared range 1.642<6.75 (GeV/c)2 and from previous data over the range 2.412<9.82 (GeV/c)2. The results confirm previous reports that the Δ(1232) transition form factor decreases more rapidly with Q2 than expected from perturbative QCD. The ratio of σn/σp in the Δ(1232) resonance region has been extracted from the deuteron data for this experiment in the range 1.642<3.75 (GeV/c)2 and fora previous experiment in the range 2.42<7.9 (GeV/c)2. A study has been made of the model dependence of these results. This ratio σnσp for Δ(1232) production is slightly less than unity, while σn/σp for the nonresonant cross sections is approximately 0.5, which is consistent with deep inelastic scattering results.",

author = "Stuart, {L. M.} and Bosted, {P. E.} and L. Andivahis and A. Lung and J. Alster and Arnold, {R. G.} and Chang, {C. C.} and Dietrich, {F. S.} and Dodge, {W. R.} and R. Gearhart and J. Gomez and Griffioen, {K. A.} and Hicks, {R. S.} and Hyde-Wright, {C. E.} and C. Keppel and Kuhn, {S. E.} and J. Lichtenstadt and Miskimen, {R. A.} and Peterson, {G. A.} and Petratos, {G. G.} and Rock, {S. E.} and Rokni, {S. H.} and Sakumoto, {W. K.} and M. Spengos and K. Swartz and Z. Szalata and Tao, {L. H.}",

year = "1998",

month = aug,

day = "1",

doi = "10.1103/PhysRevD.58.032003",

language = "אנגלית",

volume = "58",

pages = "320031--3200316",

journal = "Physical Review D - Particles, Fields, Gravitation and Cosmology",

issn = "0556-2821",

publisher = "American Institute of Physics",

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Stuart, LM, Bosted, PE, Andivahis, L, Lung, A, Alster, J, Arnold, RG, Chang, CC, Dietrich, FS, Dodge, WR, Gearhart, R, Gomez, J, Griffioen, KA, Hicks, RS, Hyde-Wright, CE, Keppel, C, Kuhn, SE, Lichtenstadt, J, Miskimen, RA, Peterson, GA, Petratos, GG, Rock, SE, Rokni, SH, Sakumoto, WK, Spengos, M, Swartz, K, Szalata, Z & Tao, LH 1998, 'Measurements of the Δ (1232) transition form factor and the ratio σ_n/σ_p from inelastic electron-proton and electron-deuteron scattering', Physical Review D - Particles, Fields, Gravitation and Cosmology, vol. 58, no. 3, 032003, pp. 320031-3200316. https://doi.org/10.1103/PhysRevD.58.032003

Measurements of the Δ (1232) transition form factor and the ratio σ_n/σ_p from inelastic electron-proton and electron-deuteron scattering. / Stuart, L. M.; Bosted, P. E.; Andivahis, L. et al.
In: Physical Review D - Particles, Fields, Gravitation and Cosmology, Vol. 58, No. 3, 032003, 01.08.1998, p. 320031-3200316.

Research output: Contribution to journal › Article › peer-review

TY - JOUR

T1 - Measurements of the Δ (1232) transition form factor and the ratio σn/σp from inelastic electron-proton and electron-deuteron scattering

AU - Stuart, L. M.

AU - Bosted, P. E.

AU - Andivahis, L.

AU - Lung, A.

AU - Alster, J.

AU - Arnold, R. G.

AU - Chang, C. C.

AU - Dietrich, F. S.

AU - Dodge, W. R.

AU - Gearhart, R.

AU - Gomez, J.

AU - Griffioen, K. A.

AU - Hicks, R. S.

AU - Hyde-Wright, C. E.

AU - Keppel, C.

AU - Kuhn, S. E.

AU - Lichtenstadt, J.

AU - Miskimen, R. A.

AU - Peterson, G. A.

AU - Petratos, G. G.

AU - Rock, S. E.

AU - Rokni, S. H.

AU - Sakumoto, W. K.

AU - Spengos, M.

AU - Swartz, K.

AU - Szalata, Z.

AU - Tao, L. H.

PY - 1998/8/1

Y1 - 1998/8/1

N2 - Measurements of inclusive electron-scattering cross sections using hydrogen and deuterium targets in the region of the Δ(1232) resonance are reported. A global fit to these new data and previous data in the resonance region is also reported for the proton. Transition form factors have been extracted from the proton cross sections for this experiment over the four-momentum transfer squared range 1.642<6.75 (GeV/c)2 and from previous data over the range 2.412<9.82 (GeV/c)2. The results confirm previous reports that the Δ(1232) transition form factor decreases more rapidly with Q2 than expected from perturbative QCD. The ratio of σn/σp in the Δ(1232) resonance region has been extracted from the deuteron data for this experiment in the range 1.642<3.75 (GeV/c)2 and fora previous experiment in the range 2.42<7.9 (GeV/c)2. A study has been made of the model dependence of these results. This ratio σnσp for Δ(1232) production is slightly less than unity, while σn/σp for the nonresonant cross sections is approximately 0.5, which is consistent with deep inelastic scattering results.

AB - Measurements of inclusive electron-scattering cross sections using hydrogen and deuterium targets in the region of the Δ(1232) resonance are reported. A global fit to these new data and previous data in the resonance region is also reported for the proton. Transition form factors have been extracted from the proton cross sections for this experiment over the four-momentum transfer squared range 1.642<6.75 (GeV/c)2 and from previous data over the range 2.412<9.82 (GeV/c)2. The results confirm previous reports that the Δ(1232) transition form factor decreases more rapidly with Q2 than expected from perturbative QCD. The ratio of σn/σp in the Δ(1232) resonance region has been extracted from the deuteron data for this experiment in the range 1.642<3.75 (GeV/c)2 and fora previous experiment in the range 2.42<7.9 (GeV/c)2. A study has been made of the model dependence of these results. This ratio σnσp for Δ(1232) production is slightly less than unity, while σn/σp for the nonresonant cross sections is approximately 0.5, which is consistent with deep inelastic scattering results.

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ER -

Measurements of the Δ (1232) transition form factor and the ratio σ_n/σ_p from inelastic electron-proton and electron-deuteron scattering

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