New measurement of parity violation in elastic electron-proton scattering and implications for strange form factors

K. A. Aniol; D. S. Armstrong; T. Averett; M. Baylac; E. Burtin; J. Calarco; G. D. Cates; C. Cavata; Z. Chai; C. C. Chang; J. P. Chen; E. Chudakov; E. Cisbani; M. Coman; D. Dale; A. Deur; P. Djawotho; M. B. Epstein; S. Escoffier; L. Ewell; N. Falletto; J. M. Finn; A. Fleck; B. Frois; S. Frullani; J. Gao; F. Garibaldi; A. Gasparian; G. M. Gerstner; R. Gilman; A. Glamazdin; J. Gomez; V. Gorbenko; O. Hansen; F. Hersman; D. W. Higinbotham; R. Holmes; M. Holtrop; B. Humensky; S. Incerti; M. Iodice; C. W. de Jager; J. Jardillier; X. Jiang; M. K. Jones; J. Jorda; C. Jutier; W. Kahl; J. J. Kelly; D. H. Kim; M. J. Kim; M. S. Kim; I. Kominis; E. Kooijman; K. Kramer; K. S. Kumar; M. Kuss; J. LeRose; R. de Leo; M. Leuschner; D. Lhuillier; M. Liang; N. Liyanage; R. Lourie; R. Madey; S. Malov; D. J. Margaziotis; F. Marie; P. Markowitz; J. Martino; P. Mastromarino; K. McCormick; J. McIntyre; Z. E. Meziani; R. Michaels; B. Milbrath; G. W. Miller; J. Mitchell; L. Morand; D. Neyret; G. G. Petratos; R. Pomatsalyuk; J. S. Price; D. Prout; T. Pussieux; G. Quéméner; R. D. Ransome; D. Relyea; Y. Roblin; J. Roche; G. A. Rutledge; P. M. Rutt; M. Rvachev; F. Sabatie; A. Saha; P. A. Souder; M. Spradlin; S. Strauch; R. Suleiman; J. Templon; T. Teresawa; J. Thompson; R. Tieulent; L. Todor; B. T. Tonguc; P. E. Ulmer; G. M. Urciuoli; B. Vlahovic; K. Wijesooriya; R. Wilson; B. Wojtsekhowski; R. Woo; W. Xu; I. Younus; C. Zhang

doi:10.1016/S0370-2693(01)00446-4

New measurement of parity violation in elastic electron-proton scattering and implications for strange form factors

K. A. Aniol, D. S. Armstrong, T. Averett, M. Baylac, E. Burtin, J. Calarco, G. D. Cates, C. Cavata, Z. Chai, C. C. Chang, J. P. Chen, E. Chudakov, E. Cisbani, M. Coman, D. Dale, A. Deur, P. Djawotho, M. B. Epstein, S. Escoffier, L. EwellN. Falletto, J. M. Finn, A. Fleck, B. Frois, S. Frullani, J. Gao, F. Garibaldi, A. Gasparian, G. M. Gerstner, R. Gilman, A. Glamazdin, J. Gomez, V. Gorbenko, O. Hansen, F. Hersman, D. W. Higinbotham, R. Holmes, M. Holtrop, B. Humensky, S. Incerti, M. Iodice, C. W. de Jager, J. Jardillier, X. Jiang, M. K. Jones, J. Jorda, C. Jutier, W. Kahl, J. J. Kelly, D. H. Kim, M. J. Kim, M. S. Kim, I. Kominis, E. Kooijman, K. Kramer, K. S. Kumar, M. Kuss, J. LeRose, R. de Leo, M. Leuschner, D. Lhuillier, M. Liang, N. Liyanage, R. Lourie, R. Madey, S. Malov, D. J. Margaziotis, F. Marie, P. Markowitz, J. Martino, P. Mastromarino, K. McCormick, J. McIntyre, Z. E. Meziani, R. Michaels, B. Milbrath, G. W. Miller, J. Mitchell, L. Morand, D. Neyret, G. G. Petratos, R. Pomatsalyuk, J. S. Price, D. Prout, T. Pussieux, G. Quéméner, R. D. Ransome, D. Relyea, Y. Roblin, J. Roche, G. A. Rutledge, P. M. Rutt, M. Rvachev, F. Sabatie, A. Saha, P. A. Souder, M. Spradlin, S. Strauch, R. Suleiman, J. Templon, T. Teresawa, J. Thompson, R. Tieulent, L. Todor, B. T. Tonguc, P. E. Ulmer, G. M. Urciuoli, B. Vlahovic, K. Wijesooriya, R. Wilson, B. Wojtsekhowski, R. Woo, W. Xu, I. Younus, C. Zhang

Department of Physics

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102 Scopus citations

Abstract

We have measured the parity-violating electroweak asymmetry in the elastic scattering of polarized electrons from the proton. The result is A = -15.05 ± 0.98(stat) ± 0.56(syst) ppm at the kinematic point (θ_lab) = 12.3° and (Q²) = 0.477 (Ge V/c)². Both errors are a factor of two smaller than those of the result reported previously. The value for the strange form factor extracted from the data is (G^S _E + 0.392 G^S _M) = 0.025 ± 0.020 ± 0.014, where the first error is experimental and the second arises from the uncertainties in electromagnetic form factors. This measurement is the first fixed-target parity violation experiment that used either a "strained" GaAs photocathode to produce highly polarized electrons or a Compton polarimeter to continuously monitor the electron beam polarization.

Original language	English (US)
Pages (from-to)	211-216
Number of pages	6
Journal	Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics
Volume	509
Issue number	3-4
DOIs	https://doi.org/10.1016/S0370-2693(01)00446-4
State	Published - Jul 14 2001

ASJC Scopus subject areas

Nuclear and High Energy Physics

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10.1016/S0370-2693(01)00446-4

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Aniol, K. A., Armstrong, D. S., Averett, T., Baylac, M., Burtin, E., Calarco, J., Cates, G. D., Cavata, C., Chai, Z., Chang, C. C., Chen, J. P., Chudakov, E., Cisbani, E., Coman, M., Dale, D., Deur, A., Djawotho, P., Epstein, M. B., Escoffier, S., ... Zhang, C. (2001). New measurement of parity violation in elastic electron-proton scattering and implications for strange form factors. Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics, 509(3-4), 211-216. https://doi.org/10.1016/S0370-2693(01)00446-4

Aniol, KA, Armstrong, DS, Averett, T, Baylac, M, Burtin, E, Calarco, J, Cates, GD, Cavata, C, Chai, Z, Chang, CC, Chen, JP, Chudakov, E, Cisbani, E, Coman, M, Dale, D, Deur, A, Djawotho, P, Epstein, MB, Escoffier, S, Ewell, L, Falletto, N, Finn, JM, Fleck, A, Frois, B, Frullani, S, Gao, J, Garibaldi, F, Gasparian, A, Gerstner, GM, Gilman, R, Glamazdin, A, Gomez, J, Gorbenko, V, Hansen, O, Hersman, F, Higinbotham, DW, Holmes, R, Holtrop, M, Humensky, B, Incerti, S, Iodice, M, de Jager, CW, Jardillier, J, Jiang, X, Jones, MK, Jorda, J, Jutier, C, Kahl, W, Kelly, JJ, Kim, DH, Kim, MJ, Kim, MS, Kominis, I, Kooijman, E, Kramer, K, Kumar, KS, Kuss, M, LeRose, J, de Leo, R, Leuschner, M, Lhuillier, D, Liang, M, Liyanage, N, Lourie, R, Madey, R, Malov, S, Margaziotis, DJ, Marie, F, Markowitz, P, Martino, J, Mastromarino, P, McCormick, K, McIntyre, J, Meziani, ZE, Michaels, R, Milbrath, B, Miller, GW, Mitchell, J, Morand, L, Neyret, D, Petratos, GG, Pomatsalyuk, R, Price, JS, Prout, D, Pussieux, T, Quéméner, G, Ransome, RD, Relyea, D, Roblin, Y, Roche, J, Rutledge, GA, Rutt, PM, Rvachev, M, Sabatie, F, Saha, A, Souder, PA, Spradlin, M, Strauch, S, Suleiman, R, Templon, J, Teresawa, T, Thompson, J, Tieulent, R, Todor, L, Tonguc, BT, Ulmer, PE, Urciuoli, GM, Vlahovic, B, Wijesooriya, K, Wilson, R, Wojtsekhowski, B, Woo, R, Xu, W, Younus, I & Zhang, C 2001, 'New measurement of parity violation in elastic electron-proton scattering and implications for strange form factors', Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics, vol. 509, no. 3-4, pp. 211-216. https://doi.org/10.1016/S0370-2693(01)00446-4

@article{8cf70abb4d18448fbade0eb9601077ca,

title = "New measurement of parity violation in elastic electron-proton scattering and implications for strange form factors",

abstract = "We have measured the parity-violating electroweak asymmetry in the elastic scattering of polarized electrons from the proton. The result is A = -15.05 ± 0.98(stat) ± 0.56(syst) ppm at the kinematic point (θlab) = 12.3° and (Q2) = 0.477 (Ge V/c)2. Both errors are a factor of two smaller than those of the result reported previously. The value for the strange form factor extracted from the data is (GS E + 0.392 GS M) = 0.025 ± 0.020 ± 0.014, where the first error is experimental and the second arises from the uncertainties in electromagnetic form factors. This measurement is the first fixed-target parity violation experiment that used either a {"}strained{"} GaAs photocathode to produce highly polarized electrons or a Compton polarimeter to continuously monitor the electron beam polarization.",

author = "Aniol, {K. A.} and Armstrong, {D. S.} and T. Averett and M. Baylac and E. Burtin and J. Calarco and Cates, {G. D.} and C. Cavata and Z. Chai and Chang, {C. C.} and Chen, {J. P.} and E. Chudakov and E. Cisbani and M. Coman and D. Dale and A. Deur and P. Djawotho and Epstein, {M. B.} and S. Escoffier and L. Ewell and N. Falletto and Finn, {J. M.} and A. Fleck and B. Frois and S. Frullani and J. Gao and F. Garibaldi and A. Gasparian and Gerstner, {G. M.} and R. Gilman and A. Glamazdin and J. Gomez and V. Gorbenko and O. Hansen and F. Hersman and Higinbotham, {D. W.} and R. Holmes and M. Holtrop and B. Humensky and S. Incerti and M. Iodice and {de Jager}, {C. W.} and J. Jardillier and X. Jiang and Jones, {M. K.} and J. Jorda and C. Jutier and W. Kahl and Kelly, {J. J.} and Kim, {D. H.} and Kim, {M. J.} and Kim, {M. S.} and I. Kominis and E. Kooijman and K. Kramer and Kumar, {K. S.} and M. Kuss and J. LeRose and {de Leo}, R. and M. Leuschner and D. Lhuillier and M. Liang and N. Liyanage and R. Lourie and R. Madey and S. Malov and Margaziotis, {D. J.} and F. Marie and P. Markowitz and J. Martino and P. Mastromarino and K. McCormick and J. McIntyre and Meziani, {Z. E.} and R. Michaels and B. Milbrath and Miller, {G. W.} and J. Mitchell and L. Morand and D. Neyret and Petratos, {G. G.} and R. Pomatsalyuk and Price, {J. S.} and D. Prout and T. Pussieux and G. Qu{\'e}m{\'e}ner and Ransome, {R. D.} and D. Relyea and Y. Roblin and J. Roche and Rutledge, {G. A.} and Rutt, {P. M.} and M. Rvachev and F. Sabatie and A. Saha and Souder, {P. A.} and M. Spradlin and S. Strauch and R. Suleiman and J. Templon and T. Teresawa and J. Thompson and R. Tieulent and L. Todor and Tonguc, {B. T.} and Ulmer, {P. E.} and Urciuoli, {G. M.} and B. Vlahovic and K. Wijesooriya and R. Wilson and B. Wojtsekhowski and R. Woo and W. Xu and I. Younus and C. Zhang",

note = "Funding Information: We wish to thank the entire staff at JLab for their tireless work in developing this new facility, and particularly C.K. Sinclair and M. Poelker for their timely work on the polarized source. This work was supported by DOE contract DE-AC05-84ER40150 under which the Southeastern Universities Research Association (SURA) operates the Thomas Jefferson National Accelerator Facility and by the Department of Energy, the National Science Foundation, the Korean Science and Engineering Foundation (Korea), the INFN (Italy), the Natural Sciences and Engineering Research Council of Canada, the Commissariat {\`a} l'{\'E}nergie Atomique (France), and the Centre National de Recherche Scientifique (France).",

year = "2001",

month = jul,

day = "14",

doi = "10.1016/S0370-2693(01)00446-4",

language = "English (US)",

volume = "509",

pages = "211--216",

journal = "Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics",

issn = "0370-2693",

publisher = "Elsevier",

number = "3-4",

}

TY - JOUR

T1 - New measurement of parity violation in elastic electron-proton scattering and implications for strange form factors

AU - Aniol, K. A.

AU - Armstrong, D. S.

AU - Averett, T.

AU - Baylac, M.

AU - Burtin, E.

AU - Calarco, J.

AU - Cates, G. D.

AU - Cavata, C.

AU - Chai, Z.

AU - Chang, C. C.

AU - Chen, J. P.

AU - Chudakov, E.

AU - Cisbani, E.

AU - Coman, M.

AU - Dale, D.

AU - Deur, A.

AU - Djawotho, P.

AU - Epstein, M. B.

AU - Escoffier, S.

AU - Ewell, L.

AU - Falletto, N.

AU - Finn, J. M.

AU - Fleck, A.

AU - Frois, B.

AU - Frullani, S.

AU - Gao, J.

AU - Garibaldi, F.

AU - Gasparian, A.

AU - Gerstner, G. M.

AU - Gilman, R.

AU - Glamazdin, A.

AU - Gomez, J.

AU - Gorbenko, V.

AU - Hansen, O.

AU - Hersman, F.

AU - Higinbotham, D. W.

AU - Holmes, R.

AU - Holtrop, M.

AU - Humensky, B.

AU - Incerti, S.

AU - Iodice, M.

AU - de Jager, C. W.

AU - Jardillier, J.

AU - Jiang, X.

AU - Jones, M. K.

AU - Jorda, J.

AU - Jutier, C.

AU - Kahl, W.

AU - Kelly, J. J.

AU - Kim, D. H.

AU - Kim, M. J.

AU - Kim, M. S.

AU - Kominis, I.

AU - Kooijman, E.

AU - Kramer, K.

AU - Kumar, K. S.

AU - Kuss, M.

AU - LeRose, J.

AU - de Leo, R.

AU - Leuschner, M.

AU - Lhuillier, D.

AU - Liang, M.

AU - Liyanage, N.

AU - Lourie, R.

AU - Madey, R.

AU - Malov, S.

AU - Margaziotis, D. J.

AU - Marie, F.

AU - Markowitz, P.

AU - Martino, J.

AU - Mastromarino, P.

AU - McCormick, K.

AU - McIntyre, J.

AU - Meziani, Z. E.

AU - Michaels, R.

AU - Milbrath, B.

AU - Miller, G. W.

AU - Mitchell, J.

AU - Morand, L.

AU - Neyret, D.

AU - Petratos, G. G.

AU - Pomatsalyuk, R.

AU - Price, J. S.

AU - Prout, D.

AU - Pussieux, T.

AU - Quéméner, G.

AU - Ransome, R. D.

AU - Relyea, D.

AU - Roblin, Y.

AU - Roche, J.

AU - Rutledge, G. A.

AU - Rutt, P. M.

AU - Rvachev, M.

AU - Sabatie, F.

AU - Saha, A.

AU - Souder, P. A.

AU - Spradlin, M.

AU - Strauch, S.

AU - Suleiman, R.

AU - Templon, J.

AU - Teresawa, T.

AU - Thompson, J.

AU - Tieulent, R.

AU - Todor, L.

AU - Tonguc, B. T.

AU - Ulmer, P. E.

AU - Urciuoli, G. M.

AU - Vlahovic, B.

AU - Wijesooriya, K.

AU - Wilson, R.

AU - Wojtsekhowski, B.

AU - Woo, R.

AU - Xu, W.

AU - Younus, I.

AU - Zhang, C.

N1 - Funding Information: We wish to thank the entire staff at JLab for their tireless work in developing this new facility, and particularly C.K. Sinclair and M. Poelker for their timely work on the polarized source. This work was supported by DOE contract DE-AC05-84ER40150 under which the Southeastern Universities Research Association (SURA) operates the Thomas Jefferson National Accelerator Facility and by the Department of Energy, the National Science Foundation, the Korean Science and Engineering Foundation (Korea), the INFN (Italy), the Natural Sciences and Engineering Research Council of Canada, the Commissariat à l'Énergie Atomique (France), and the Centre National de Recherche Scientifique (France).

PY - 2001/7/14

Y1 - 2001/7/14

N2 - We have measured the parity-violating electroweak asymmetry in the elastic scattering of polarized electrons from the proton. The result is A = -15.05 ± 0.98(stat) ± 0.56(syst) ppm at the kinematic point (θlab) = 12.3° and (Q2) = 0.477 (Ge V/c)2. Both errors are a factor of two smaller than those of the result reported previously. The value for the strange form factor extracted from the data is (GS E + 0.392 GS M) = 0.025 ± 0.020 ± 0.014, where the first error is experimental and the second arises from the uncertainties in electromagnetic form factors. This measurement is the first fixed-target parity violation experiment that used either a "strained" GaAs photocathode to produce highly polarized electrons or a Compton polarimeter to continuously monitor the electron beam polarization.

AB - We have measured the parity-violating electroweak asymmetry in the elastic scattering of polarized electrons from the proton. The result is A = -15.05 ± 0.98(stat) ± 0.56(syst) ppm at the kinematic point (θlab) = 12.3° and (Q2) = 0.477 (Ge V/c)2. Both errors are a factor of two smaller than those of the result reported previously. The value for the strange form factor extracted from the data is (GS E + 0.392 GS M) = 0.025 ± 0.020 ± 0.014, where the first error is experimental and the second arises from the uncertainties in electromagnetic form factors. This measurement is the first fixed-target parity violation experiment that used either a "strained" GaAs photocathode to produce highly polarized electrons or a Compton polarimeter to continuously monitor the electron beam polarization.

UR - http://www.scopus.com/inward/record.url?scp=0035859608&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=0035859608&partnerID=8YFLogxK

U2 - 10.1016/S0370-2693(01)00446-4

DO - 10.1016/S0370-2693(01)00446-4

M3 - Article

AN - SCOPUS:0035859608

SN - 0370-2693

VL - 509

SP - 211

EP - 216

JO - Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics

JF - Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics

IS - 3-4

ER -

New measurement of parity violation in elastic electron-proton scattering and implications for strange form factors

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