Proton spin structure in the resonance region

F. R. Wesselmann; K. Slifer; S. Tajima; A. Aghalaryan; A. Ahmidouch; R. Asaturyan; F. Bloch; W. Boeglin; P. Bosted; C. Carasco; R. Carlini; J. Cha; J. P. Chen; M. E. Christy; L. Cole; L. Coman; D. Crabb; S. Danagoulian; D. Day; J. Dunne; M. Elaasar; R. Ent; H. Fenker; E. Frlez; L. Gan; D. Gaskell; J. Gomez; B. Hu; M. K. Jones; J. Jourdan; C. Keith; C. E. Keppel; M. Khandaker; A. Klein; L. Kramer; Y. Liang; J. Lichtenstadt; R. Lindgren; D. MacK; P. McKee; D. McNulty; D. Meekins; H. Mkrtchyan; R. Nasseripour; I. Niculescu; K. Normand; B. Norum; D. Pocanic; Y. Prok; B. Raue; J. Reinhold; J. Roche; D. Rohe; O. A. Rondón; N. Savvinov; B. Sawatzky; M. Seely; I. Sick; C. Smith; G. Smith; S. Stepanyan; L. Tang; G. Testa; W. Vulcan; K. Wang; G. Warren; S. Wood; C. Yan; L. Yuan; J. Yun; M. Zeier; H. Zhu

doi:10.1103/PhysRevLett.98.132003

Proton spin structure in the resonance region

F. R. Wesselmann, K. Slifer, S. Tajima, A. Aghalaryan, A. Ahmidouch, R. Asaturyan, F. Bloch, W. Boeglin, P. Bosted, C. Carasco, R. Carlini, J. Cha, J. P. Chen, M. E. Christy, L. Cole, L. Coman, D. Crabb, S. Danagoulian, D. Day, J. DunneM. Elaasar, R. Ent, H. Fenker, E. Frlez, L. Gan, D. Gaskell, J. Gomez, B. Hu, M. K. Jones, J. Jourdan, C. Keith, C. E. Keppel, M. Khandaker, A. Klein, L. Kramer, Y. Liang, J. Lichtenstadt, R. Lindgren, D. MacK, P. McKee, D. McNulty, D. Meekins, H. Mkrtchyan, R. Nasseripour, I. Niculescu, K. Normand, B. Norum, D. Pocanic, Y. Prok, B. Raue, J. Reinhold, J. Roche, D. Rohe, O. A. Rondón, N. Savvinov, B. Sawatzky, M. Seely, I. Sick, C. Smith, G. Smith, S. Stepanyan, L. Tang, G. Testa, W. Vulcan, K. Wang, G. Warren, S. Wood, C. Yan, L. Yuan, J. Yun, M. Zeier, H. Zhu

School of Physics and Astronomy

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

Abstract

We have examined the spin structure of the proton in the region of the nucleon resonances (1.085GeV<W<1.910GeV) at an average four momentum transfer of Q2=1.3GeV2. Using the Jefferson Lab polarized electron beam, a spectrometer, and a polarized solid target, we measured the asymmetries and to high precision, and extracted the asymmetries A1 and A2, and the spin structure functions g1 and g2. We found a notably nonzero A, significant contributions from higher-twist effects, and only weak support for polarized quark-hadron duality.

Original language	English
Article number	132003
Journal	Physical Review Letters
Volume	98
Issue number	13
DOIs	https://doi.org/10.1103/PhysRevLett.98.132003
State	Published - 30 Mar 2007

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10.1103/PhysRevLett.98.132003

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Wesselmann, F. R., Slifer, K., Tajima, S., Aghalaryan, A., Ahmidouch, A., Asaturyan, R., Bloch, F., Boeglin, W., Bosted, P., Carasco, C., Carlini, R., Cha, J., Chen, J. P., Christy, M. E., Cole, L., Coman, L., Crabb, D., Danagoulian, S., Day, D., ... Zhu, H. (2007). Proton spin structure in the resonance region. Physical Review Letters, 98(13), [132003]. https://doi.org/10.1103/PhysRevLett.98.132003

Wesselmann, F. R. ; Slifer, K. ; Tajima, S. ; Aghalaryan, A. ; Ahmidouch, A. ; Asaturyan, R. ; Bloch, F. ; Boeglin, W. ; Bosted, P. ; Carasco, C. ; Carlini, R. ; Cha, J. ; Chen, J. P. ; Christy, M. E. ; Cole, L. ; Coman, L. ; Crabb, D. ; Danagoulian, S. ; Day, D. ; Dunne, J. ; Elaasar, M. ; Ent, R. ; Fenker, H. ; Frlez, E. ; Gan, L. ; Gaskell, D. ; Gomez, J. ; Hu, B. ; Jones, M. K. ; Jourdan, J. ; Keith, C. ; Keppel, C. E. ; Khandaker, M. ; Klein, A. ; Kramer, L. ; Liang, Y. ; Lichtenstadt, J. ; Lindgren, R. ; MacK, D. ; McKee, P. ; McNulty, D. ; Meekins, D. ; Mkrtchyan, H. ; Nasseripour, R. ; Niculescu, I. ; Normand, K. ; Norum, B. ; Pocanic, D. ; Prok, Y. ; Raue, B. ; Reinhold, J. ; Roche, J. ; Rohe, D. ; Rondón, O. A. ; Savvinov, N. ; Sawatzky, B. ; Seely, M. ; Sick, I. ; Smith, C. ; Smith, G. ; Stepanyan, S. ; Tang, L. ; Testa, G. ; Vulcan, W. ; Wang, K. ; Warren, G. ; Wood, S. ; Yan, C. ; Yuan, L. ; Yun, J. ; Zeier, M. ; Zhu, H. / Proton spin structure in the resonance region. In: Physical Review Letters. 2007 ; Vol. 98, No. 13.

@article{427fe1b5a3564eeca6a15512febd58fc,

title = "Proton spin structure in the resonance region",

abstract = "We have examined the spin structure of the proton in the region of the nucleon resonances (1.085GeV<W<1.910GeV) at an average four momentum transfer of Q2=1.3GeV2. Using the Jefferson Lab polarized electron beam, a spectrometer, and a polarized solid target, we measured the asymmetries and to high precision, and extracted the asymmetries A1 and A2, and the spin structure functions g1 and g2. We found a notably nonzero A, significant contributions from higher-twist effects, and only weak support for polarized quark-hadron duality.",

author = "Wesselmann, {F. R.} and K. Slifer and S. Tajima and A. Aghalaryan and A. Ahmidouch and R. Asaturyan and F. Bloch and W. Boeglin and P. Bosted and C. Carasco and R. Carlini and J. Cha and Chen, {J. P.} and Christy, {M. E.} and L. Cole and L. Coman and D. Crabb and S. Danagoulian and D. Day and J. Dunne and M. Elaasar and R. Ent and H. Fenker and E. Frlez and L. Gan and D. Gaskell and J. Gomez and B. Hu and Jones, {M. K.} and J. Jourdan and C. Keith and Keppel, {C. E.} and M. Khandaker and A. Klein and L. Kramer and Y. Liang and J. Lichtenstadt and R. Lindgren and D. MacK and P. McKee and D. McNulty and D. Meekins and H. Mkrtchyan and R. Nasseripour and I. Niculescu and K. Normand and B. Norum and D. Pocanic and Y. Prok and B. Raue and J. Reinhold and J. Roche and D. Rohe and Rond{\'o}n, {O. A.} and N. Savvinov and B. Sawatzky and M. Seely and I. Sick and C. Smith and G. Smith and S. Stepanyan and L. Tang and G. Testa and W. Vulcan and K. Wang and G. Warren and S. Wood and C. Yan and L. Yuan and J. Yun and M. Zeier and H. Zhu",

year = "2007",

month = mar,

day = "30",

doi = "10.1103/PhysRevLett.98.132003",

language = "אנגלית",

volume = "98",

journal = "Physical Review Letters",

issn = "0031-9007",

publisher = "American Physical Society",

number = "13",

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Wesselmann, FR, Slifer, K, Tajima, S, Aghalaryan, A, Ahmidouch, A, Asaturyan, R, Bloch, F, Boeglin, W, Bosted, P, Carasco, C, Carlini, R, Cha, J, Chen, JP, Christy, ME, Cole, L, Coman, L, Crabb, D, Danagoulian, S, Day, D, Dunne, J, Elaasar, M, Ent, R, Fenker, H, Frlez, E, Gan, L, Gaskell, D, Gomez, J, Hu, B, Jones, MK, Jourdan, J, Keith, C, Keppel, CE, Khandaker, M, Klein, A, Kramer, L, Liang, Y, Lichtenstadt, J, Lindgren, R, MacK, D, McKee, P, McNulty, D, Meekins, D, Mkrtchyan, H, Nasseripour, R, Niculescu, I, Normand, K, Norum, B, Pocanic, D, Prok, Y, Raue, B, Reinhold, J, Roche, J, Rohe, D, Rondón, OA, Savvinov, N, Sawatzky, B, Seely, M, Sick, I, Smith, C, Smith, G, Stepanyan, S, Tang, L, Testa, G, Vulcan, W, Wang, K, Warren, G, Wood, S, Yan, C, Yuan, L, Yun, J, Zeier, M & Zhu, H 2007, 'Proton spin structure in the resonance region', Physical Review Letters, vol. 98, no. 13, 132003. https://doi.org/10.1103/PhysRevLett.98.132003

Proton spin structure in the resonance region. / Wesselmann, F. R.; Slifer, K.; Tajima, S.; Aghalaryan, A.; Ahmidouch, A.; Asaturyan, R.; Bloch, F.; Boeglin, W.; Bosted, P.; Carasco, C.; Carlini, R.; Cha, J.; Chen, J. P.; Christy, M. E.; Cole, L.; Coman, L.; Crabb, D.; Danagoulian, S.; Day, D.; Dunne, J.; Elaasar, M.; Ent, R.; Fenker, H.; Frlez, E.; Gan, L.; Gaskell, D.; Gomez, J.; Hu, B.; Jones, M. K.; Jourdan, J.; Keith, C.; Keppel, C. E.; Khandaker, M.; Klein, A.; Kramer, L.; Liang, Y.; Lichtenstadt, J.; Lindgren, R.; MacK, D.; McKee, P.; McNulty, D.; Meekins, D.; Mkrtchyan, H.; Nasseripour, R.; Niculescu, I.; Normand, K.; Norum, B.; Pocanic, D.; Prok, Y.; Raue, B.; Reinhold, J.; Roche, J.; Rohe, D.; Rondón, O. A.; Savvinov, N.; Sawatzky, B.; Seely, M.; Sick, I.; Smith, C.; Smith, G.; Stepanyan, S.; Tang, L.; Testa, G.; Vulcan, W.; Wang, K.; Warren, G.; Wood, S.; Yan, C.; Yuan, L.; Yun, J.; Zeier, M.; Zhu, H.

In: Physical Review Letters, Vol. 98, No. 13, 132003, 30.03.2007.

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

TY - JOUR

T1 - Proton spin structure in the resonance region

AU - Wesselmann, F. R.

AU - Slifer, K.

AU - Tajima, S.

AU - Aghalaryan, A.

AU - Ahmidouch, A.

AU - Asaturyan, R.

AU - Bloch, F.

AU - Boeglin, W.

AU - Bosted, P.

AU - Carasco, C.

AU - Carlini, R.

AU - Cha, J.

AU - Chen, J. P.

AU - Christy, M. E.

AU - Cole, L.

AU - Coman, L.

AU - Crabb, D.

AU - Danagoulian, S.

AU - Day, D.

AU - Dunne, J.

AU - Elaasar, M.

AU - Ent, R.

AU - Fenker, H.

AU - Frlez, E.

AU - Gan, L.

AU - Gaskell, D.

AU - Gomez, J.

AU - Hu, B.

AU - Jones, M. K.

AU - Jourdan, J.

AU - Keith, C.

AU - Keppel, C. E.

AU - Khandaker, M.

AU - Klein, A.

AU - Kramer, L.

AU - Liang, Y.

AU - Lichtenstadt, J.

AU - Lindgren, R.

AU - MacK, D.

AU - McKee, P.

AU - McNulty, D.

AU - Meekins, D.

AU - Mkrtchyan, H.

AU - Nasseripour, R.

AU - Niculescu, I.

AU - Normand, K.

AU - Norum, B.

AU - Pocanic, D.

AU - Prok, Y.

AU - Raue, B.

AU - Reinhold, J.

AU - Roche, J.

AU - Rohe, D.

AU - Rondón, O. A.

AU - Savvinov, N.

AU - Sawatzky, B.

AU - Seely, M.

AU - Sick, I.

AU - Smith, C.

AU - Smith, G.

AU - Stepanyan, S.

AU - Tang, L.

AU - Testa, G.

AU - Vulcan, W.

AU - Wang, K.

AU - Warren, G.

AU - Wood, S.

AU - Yan, C.

AU - Yuan, L.

AU - Yun, J.

AU - Zeier, M.

AU - Zhu, H.

PY - 2007/3/30

Y1 - 2007/3/30

N2 - We have examined the spin structure of the proton in the region of the nucleon resonances (1.085GeV<W<1.910GeV) at an average four momentum transfer of Q2=1.3GeV2. Using the Jefferson Lab polarized electron beam, a spectrometer, and a polarized solid target, we measured the asymmetries and to high precision, and extracted the asymmetries A1 and A2, and the spin structure functions g1 and g2. We found a notably nonzero A, significant contributions from higher-twist effects, and only weak support for polarized quark-hadron duality.

AB - We have examined the spin structure of the proton in the region of the nucleon resonances (1.085GeV<W<1.910GeV) at an average four momentum transfer of Q2=1.3GeV2. Using the Jefferson Lab polarized electron beam, a spectrometer, and a polarized solid target, we measured the asymmetries and to high precision, and extracted the asymmetries A1 and A2, and the spin structure functions g1 and g2. We found a notably nonzero A, significant contributions from higher-twist effects, and only weak support for polarized quark-hadron duality.

UR - http://www.scopus.com/inward/record.url?scp=34047108170&partnerID=8YFLogxK

U2 - 10.1103/PhysRevLett.98.132003

DO - 10.1103/PhysRevLett.98.132003

M3 - ???researchoutput.researchoutputtypes.contributiontojournal.article???

AN - SCOPUS:34047108170

VL - 98

JO - Physical Review Letters

JF - Physical Review Letters

SN - 0031-9007

IS - 13

M1 - 132003

ER -

Proton spin structure in the resonance region

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