G{sub E{sub p}}/G{sub M{sub p}} ratio by polarization transfer in e --> p --> ep --

G{sub E{sub p}}/G{sub M{sub p}} ratio by polarization transfer in e --> p --> ep --

The ratio of the proton's elastic electromagnetic form factors, G{sub E{sub p}}/G{sub M{sub p}} was obtained by measuring P{sub i} and P{sub l}, the transverse and the longitudinal recoil proton polarization, respectively. For elastic ep to ep, G{sub E{sub p}}/G{sub M{sub p}} is proportional to...

Ausführliche Beschreibung

Gespeichert in:
Bibliographische Detailangaben
Veröffentlicht in:Physical review letters 2000-02, Vol.84 (7)
Hauptverfasser: Jones, Mark, Aniol, Konrad, Baker, F, Bertin, Pierre, Bertozzi, William, Besson, Auguste, Bimbot, Louis, Boeglin, Werner, Brash, Edward, Brown, D, Calarco, John, Cardman, Lawrence, Chen, Jian-Ping, Chudakov, Eugene, Churchwell, Steve, Cisbani, Evaristo, Dale, Daniel, Leo, Raffaele De, Deur, Alexandre, Diederich, Brian, Domingo, John, Epstein, Martin, Ewell, Lars, Fonvieille, Helene, Frullani, Salvatore, Gao, Juncai, Garibaldi, Franco, Gasparian, Ashot, Gerstner, G M, Gilad, Shalev, Gilman, Ronald, Glamazdin, Oleksandr, Glashausser, Charles, Gomez, Javier, Gorbenko, Viktor, Green, Alphonza, Hansen, Jens-Ole, Howell, Calvin, Huber, Garth, Jager, Cornelis de, Jaminion, Stephanie, Jiang, Xiaodong, Kahl, William E, Kelly, James, Khayat, Mohammad, Kramer, Laird, Kumbartzki, Gerfried, Kuss, Michael, Laveissiere, Geraud, LeRose, John, Liang, Meihua, Lindgren, Richard, Liyanage, Nilanga, Lolos, George, Macri, R, Madey, Richard, Malov, Sergey, Margaziotis, Demetrius, Markowitz, Pete, McIntyre, Justin, der Meer, Rob van, Michaels, Robert, Milbrath, Brian, Mougey, Jean, Nanda, Sirish, Offermann, Ed, Papandreou, Zisis, Perdrisat, Charles, Petratos, Gerassimos, Piskunov, Nikolai, Pomatsalyuk, Roman, Prout, David, Punjabi, Vina, Quemener, Gilles, Ransome, Ronald, Raue, Brian, Roche, Julie, Rutledge, Gary, Rutt, Paul, Saha, Arunava, Saito, Teijiro, Sarty, Adam, Smith, T P, Sorokin, P, Strauch, Steffen, Suleiman, Riad, Takahashi, Kazunori, Templon, Jeffrey, Todor, Luminita, Ulmer, Paul, Urciuoli, Guido, Vernin, Pascal, Vlahovic, Branislav, Voskanian, H, Wijesooriya, Krishni, Wojtsekhowski, Bogdan, Woo, Rhett, Xiong, Feng, Zainea, Dan, Zhou, Zilu
Format: Artikel
Sprache:eng
Schlagworte:
ELECTROMAGNETIC FORM FACTORS
MAGNETIZATION
PHYSICS OF ELEMENTARY PARTICLES AND FIELDS
POLARIMETERS
POLARIZATION
PROTONS
SPATIAL DISTRIBUTION
Online-Zugang:Volltext
Tags: Tag hinzufügen
Keine Tags, Fügen Sie den ersten Tag hinzu!
Beschreibung
Zusammenfassung:The ratio of the proton's elastic electromagnetic form factors, G{sub E{sub p}}/G{sub M{sub p}} was obtained by measuring P{sub i} and P{sub l}, the transverse and the longitudinal recoil proton polarization, respectively. For elastic ep to ep, G{sub E{sub p}}/G{sub M{sub p}} is proportional to P{sub t}/P{sub l}. Simultaneous measurement of P{sub t} and P{sub l} in a polarimeter provides good control of the systematic uncertainty. The results for the ratio G{sub E{sub p}}/G{sub M{sub p}} show a systematic decrease as Q{sup 2} increases from 0.5 to 3.5 GeV{sup 2}, indicating for the first time a definite difference in the spatial distribution of charge and magnetization currents in the proton.
ISSN:0031-9007
1079-7114