Precision measurements of the timelike electromagnetic form factors of pion, kaon, and proton

T. K. Pedlar*, D. Cronin-Hennessy, K. Y. Gao, D. T. Gong, J. Hietala, Y. Kubota, T. Klein, B. W. Lang, S. Z. Li, R. Poling, A. W. Scott, A. Smith, S. Dobbs, Z. Metreveli, K. K. Seth, A. Tomaradze, P. Zweber, J. Ernst, K. Arms, H. SeveriniS. A. Dytman, W. Love, S. Mehrabyan, J. A. Mueller, V. Savinov, Z. Li, A. Lopez, H. Mendez, J. Ramirez, G. S. Huang, D. H. Miller, V. Pavlunin, B. Sanghi, I. P.J. Shipsey, G. S. Adams, M. Anderson, J. P. Cummings, I. Danko, J. Napolitano, Q. He, H. Muramatsu, C. S. Park, E. H. Thorndike, T. E. Coan, Y. S. Gao, F. Liu, M. Artuso, C. Boulahouache, S. Blusk, J. Butt, O. Dorjkhaidav, J. Li, N. Menaa, R. Mountain, K. Randrianarivony, R. Redjimi, R. Sia, T. Skwarnicki, S. Stone, J. C. Wang, K. Zhang, S. E. Csorna, G. Bonvicini, D. Cinabro, M. Dubrovin, A. Lincoln, A. Bornheim, S. P. Pappas, A. J. Weinstein, R. A. Briere, G. P. Chen, J. Chen, T. Ferguson, G. Tatishvili, H. Vogel, M. E. Watkins, J. L. Rosner, N. E. Adam, J. P. Alexander, K. Berkelman, D. G. Cassel, J. E. Duboscq, K. M. Ecklund, R. Ehrlich, L. Fields, R. S. Galik, L. Gibbons, R. Gray, S. W. Gray, D. L. Hartill, B. K. Heltsley, D. Hertz, C. D. Jones, J. Kandaswamy, D. L. Kreinick, V. E. Kuznetsov, H. Mahlke-Krüger, T. O. Meyer, P. U.E. Onyisi, J. R. Patterson, D. Peterson, E. A. Phillips, J. Pivarski, D. Riley, A. Ryd, A. J. Sadoff, H. Schwarthoff, X. Shi, M. R. Shepherd, S. Stroiney, W. M. Sun, T. Wilksen, K. M. Weaver, M. Weinberger, S. B. Athar, P. Avery, L. Breva-Newell, R. Patel, V. Potlia, H. Stoeck, J. Yelton, P. Rubin, C. Cawlfield, B. I. Eisenstein, I. Karliner, D. Kim, N. Lowrey, P. Naik, C. Sedlack, M. Selen, E. J. White, J. Williams, J. Wiss, D. M. Asner, K. W. Edwards, D. Besson

*Corresponding author for this work

Research output: Contribution to journalArticle

104 Scopus citations

Abstract

Using 20.7pb-1 of e+e- annihilation data taken at s=3.671GeV with the CLEO-c detector, precision measurements of the electromagnetic form factors of the charged pion, charged kaon, and proton have been made for timelike momentum transfer of |Q2|=13.48GeV2 by the reaction e+e-→h+h-. The measurements are the first ever with identified pions and kaons of |Q2|>4GeV2, with the results Fπ(13.48GeV2)=0.075±0.008(stat)±0.005(syst) and FK(13.48GeV2)=0.063±0.004(stat)±0.001(syst). The result for the proton, assuming GEp=GMp, is GMp(13.48GeV2)=0.014±0.002(stat)±0. 001(syst), which is in agreement with earlier results.

Original languageEnglish (US)
Article number261803
JournalPhysical review letters
Volume95
Issue number26
DOIs
StatePublished - Dec 31 2005

ASJC Scopus subject areas

  • Physics and Astronomy(all)

Fingerprint Dive into the research topics of 'Precision measurements of the timelike electromagnetic form factors of pion, kaon, and proton'. Together they form a unique fingerprint.

  • Cite this

    Pedlar, T. K., Cronin-Hennessy, D., Gao, K. Y., Gong, D. T., Hietala, J., Kubota, Y., Klein, T., Lang, B. W., Li, S. Z., Poling, R., Scott, A. W., Smith, A., Dobbs, S., Metreveli, Z., Seth, K. K., Tomaradze, A., Zweber, P., Ernst, J., Arms, K., ... Besson, D. (2005). Precision measurements of the timelike electromagnetic form factors of pion, kaon, and proton. Physical review letters, 95(26), [261803]. https://doi.org/10.1103/PhysRevLett.95.261803