GEp/GMp ratio by polarization transfer in (e)over-right-arrowp → e(p)over-right-arrow

被引：809

作者：

Jones, MK ^{[1
]}

Aniol, KA

Baker, FT

Berthot, J

Bertin, PY

Bertozzi, W

Besson, A

Bimbot, L

Boeglin, WU

Brash, EJ

Brown, D

Calarco, JR

Cardman, LS

Chang, CC

Chen, JP

Chudakov, E

Churchwell, S

Cisbani, E

Dale, DS

De Leo, R

Deur, A

Diederich, B

Domingo, JJ

Epstein, MB

Ewell, LA

Fissum, KG

Fleck, A

Fonvieille, H

Frullani, S

Gao, J

Garibaldi, F

Gasparian, A

Gerstner, G

Gilad, S

Gilman, R

Glamazdin, A

Glashausser, C

Gomez, J

Gorbenko, V

Green, A

Hansen, JO

Howell, CR

Huber, GM

Iodice, M

de Jager, CW

Jaminion, S

Jiang, X

Kahl, W

Kelly, JJ

Khayat, M

机构：

[1] Coll William & Mary, Williamsburg, VA 23187 USA

[2] Rutgers State Univ, Piscataway, NJ 08855 USA

[3] Norfolk State Univ, Norfolk, VA 23504 USA

[4] Univ Georgia, Athens, GA 30602 USA

[5] Univ Regina, Regina, SK S4S 0A2, Canada

[6] Univ Blaise Pascal, CNRS, IN2P3, F-63177 Clermont Ferrand, France

[7] Calif State Univ Los Angeles, Los Angeles, CA 90032 USA

[8] Duke Univ, Durham, NC 27708 USA

[9] TUNL, Durham, NC 27708 USA

[10] Eastern Kentucky Univ, Richmond, KY 40475 USA

[11] Florida Int Univ, Miami, FL 33199 USA

[12] Florida State Univ, Tallahassee, FL 32306 USA

[13] CNRS, IN2P3, Inst Sci Nucl, F-38026 Grenoble, France

[14] Hampton Univ, Hampton, VA 23668 USA

[15] Ist Nazl Fis Nucl, Sez Bari, I-70126 Bari, Italy

[16] Univ Bari, I-70126 Bari, Italy

[17] Ist Nazl Fis Nucl, Sez Sanita, I-00161 Rome, Italy

[18] Ist Super Sanita, I-00161 Rome, Italy

[19] Joint Inst Nucl Res, LHE, Dubna 141980, Moscow Region, Russia

[20] Kent State Univ, Kent, OH 44242 USA

[21] Univ Kentucky, Lexington, KY 40506 USA

[22] Kharkov Phys & Technol Inst, UA-310108 Kharkov, Ukraine

[23] Univ Manitoba, Winnipeg, MB R3T 2N2, Canada

[24] Univ Maryland, College Pk, MD 20742 USA

[25] MIT, Cambridge, MA 02139 USA

[26] Univ New Hampshire, Durham, NH 03824 USA

[27] N Carolina Cent Univ, Durham, NC 27707 USA

[28] Old Dominion Univ, Norfolk, VA 23508 USA

[29] Inst Phys Nucl, F-91406 Orsay, France

[30] CEA Saclay, F-91191 Gif Sur Yvette, France

[31] Syracuse Univ, Syracuse, NY 13244 USA

[32] Temple Univ, Philadelphia, PA 19122 USA

[33] Thomas Jefferson Natl Accelerator Facil, Newport News, VA 23606 USA

[34] Tohoku Univ, Sendai, Miyagi 980, Japan

[35] Univ Virginia, Charlottesville, VA 22901 USA

[36] Univ Western Cape, Cape Town, South Africa

[37] Yerevan Phys Inst, Yerevan 375036, Armenia

来源：

PHYSICAL REVIEW LETTERS | 2000年 / 84卷 / 07期

关键词：

D O I：

10.1103/PhysRevLett.84.1398

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

The ratio of the proton's elastic electromagnetic form factors, G(Ep)/G(Mp), was obtained by measuring P-t and P-l, the transverse and the longitudinal recoil proton polarization, respectively For elastic (e) over right arrow p --> e (p) over right arrow, G(Ep)/G(Mp) is proportional to P-t/P-l. Simultaneous measurement of P-t and P-l in a polarimeter provides good control of the systematic uncertainty. The results for the ratio G(Ep)/G(Mp) show a systematic decrease as Q(2) increases from 0.5 to 3.5 GeV2, indicating for the first time a definite difference in the spatial distribution of charge and magnetization currents in the proton.

引用

页码：1398 / 1402

页数：5

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