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

被引：110

作者：

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 ^{[1
]}

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

机构：

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

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

[3] Univ Virginia, Charlottesville, VA 22901 USA

[4] TRIUMF, Vancouver, BC V6T 2A3, Canada

[5] Tohoku Univ, Sendai, Miyagi 9890, Japan

[6] Temple Univ, Philadelphia, PA 19122 USA

[7] Syracuse Univ, Syracuse, NY 13244 USA

[8] SUNY Stony Brook, Stony Brook, NY 11794 USA

[9] CEA Saclay, DAPNIA, SPhN, F-91191 Gif Sur Yvette, France

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

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

[12] Princeton Univ, Princeton, NJ 08544 USA

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

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

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

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

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

[18] MIT, Cambridge, MA 02139 USA

[19] Univ Massachusetts, Amherst, MA 01003 USA

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

[21] Kyungpook Natl Univ, Taegu 702701, South Korea

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

[23] Univ Kentucky, Lexington, KY 40506 USA

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

[25] Thomas Jefferson Natl Accelerator Lab, Newport News, VA 23606 USA

[26] Ist Nazl Fis Nucl, Sezione Sanita, I-00161 Rome, Italy

[27] Ist Nazl Fis Nucl, Sezione Roma 3, I-00146 Rome, Italy

[28] Ist Nazl Fis Nucl, Sezione Bari, I-70126 Bari, Italy

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

[30] Harvard Univ, Cambridge, MA 02138 USA

[31] Hampton Univ, Hampton, VA 23668 USA

[32] Univ Georgia, Athens, GA 30602 USA

[33] Univ Grenoble 1, F-38041 Grenoble, France

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

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

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

来源：

PHYSICS LETTERS B | 2001年 / 509卷 / 3-4期

基金：

加拿大自然科学与工程研究理事会; 美国国家科学基金会;

关键词：

D O I：

10.1016/S0370-2693(01)00446-4

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

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 (theta (lab)) = 12.3 degrees and (Q(2)) = 0.477 (GeV/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(E)(s) + 0.392 G(M)(s)) = 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. (C) 2001 Published by Elsevier Science B.V.

引用

页码：211 / 216

页数：6

共 38 条

[1] Measurement of the neutral weak form factors of the proton [J].

Aniol, KA ;

Armstrong, DS ;

Baylac, M ;

Burtin, E ;

Calarco, J ;

Cates, GD ;

Cavata, C ;

Chen, JP ;

Chudakov, E ;

Dale, D ;

de Jager, CW ;

Deur, A ;

Djawotho, P ;

Epstein, MB ;

Escoffier, S ;

Ewell, L ;

Falletto, N ;

Finn, JM ;

Fissum, K ;

Fleck, A ;

Frois, B ;

Gao, J ;

Garibaldi, F ;

Gasparian, A ;

Gerstner, GM ;

Gilman, R ;

Glamazdin, A ;

Gomez, J ;

Gorbenko, V ;

Hansen, O ;

Hersman, F ;

Holmes, R ;

Holtrop, M ;

Humensky, B ;

Incerti, S ;

Jardillier, J ;

Jones, MK ;

Jorda, J ;

Jutier, C ;

Kahl, W ;

Kim, DH ;

Kim, MS ;

Kramer, K ;

Kumar, KS ;

Kuss, M ;

LeRose, J ;

Leuschner, M ;

Lhuillier, D ;

Liyanage, N ;

Lourie, R .

PHYSICAL REVIEW LETTERS, 1999, 82 (06) :1096-1100

[2] Precise measurements of the neutron magnetic form factor [J].

Anklin, H ;

deBever, LJ ;

Blomqvist, KI ;

Boeglin, WU ;

Bohm, R ;

Distler, M ;

Edelhoff, R ;

Friedrich, J ;

Fritschi, D ;

Geiges, R ;

Gotz, J ;

Honegger, A ;

Jennewein, P ;

Jourdan, J ;

Kahrau, M ;

Korn, M ;

Kramer, H ;

Krygier, KW ;

Kubon, G ;

Kunde, V ;

Liesenfeld, A ;

Masson, G ;

Merle, K ;

Neuhausen, R ;

Offermann, EAJM ;

Petitjean, T ;

Pospischil, T ;

Potokar, M ;

Qin, LM ;

Richter, AW ;

Rokavec, A ;

Rosner, G ;

Sauer, P ;

Schardt, S ;

Sick, I ;

Sirca, S ;

Trueb, P ;

Tuccillo, M ;

Vodenik, B ;

Wagner, A ;

Walcher, T ;

Warren, G ;

Wolf, S ;

Zhao, J ;

Zeier, M ;

Zihlmann, B .

PHYSICS LETTERS B, 1998, 428 (3-4) :248-253

[3]

ARMSTRONG D, JLAB EXPT E00 114

[4] Determination of the neutron electric form factor from the reaction 3He(e, e′n) at medium momentum transfer [J].

Becker, J ;

Andresen, HG ;

Annand, JRM ;

Aulenbacher, K ;

Beuchel, K ;

Blume-Werry, J ;

Dombo, T ;

Drescher, P ;

Ebert, M ;

Eyl, D ;

Frey, A ;

Grabmayr, P ;

Grossmann, T ;

Hartmann, P ;

Hehl, T ;

Heil, W ;

Herberg, C ;

Hoffmann, J ;

Kellie, JD ;

Klein, F ;

Livingston, K ;

Leduc, M ;

Meyerhoff, M ;

Möller, H ;

Nachtigall, C ;

Natter, A ;

Ostrick, M ;

Otten, EW ;

Owens, RO ;

Plützer, S ;

Reichert, E ;

Rohe, D ;

Schäfer, M ;

Schmieden, H ;

Sprengard, R ;

Steigerwald, T ;

Steffens, KH ;

Surkau, R ;

Walcher, T ;

Watson, R ;

Wilms, E .

EUROPEAN PHYSICAL JOURNAL A, 1999, 6 (03) :329-344

[5] MEASUREMENT OF THE NEUTRON MAGNETIC FORM-FACTOR [J].

BRUINS, EEW ;

BAUER, TS ;

DENBOK, HW ;

DUIF, CP ;

VANHOEK, WC ;

DELANGE, DJJ ;

MISIEJUK, A ;

PAPANDREOU, Z ;

SICHTERMANN, EP ;

TJON, JA ;

WILLERING, HW ;

YEOMANS, DM ;

REIKE, H ;

DUREK, D ;

FROMMBERGER, F ;

GOTHE, R ;

JAKOB, D ;

KRANEFELD, G ;

KUNZ, C ;

LEIENDECKER, N ;

PFEIFFER, G ;

PUTSCH, H ;

REICHELT, T ;

SCHOCH, B ;

WACKER, D ;

WEHRMEISTER, D ;

WILHELM, M ;

JANS, E ;

KONIJN, J ;

DEVRIES, R ;

FURGET, C ;

VOUTIER, E ;

ARENHOVEL, H .

PHYSICAL REVIEW LETTERS, 1995, 75 (01) :21-24

[6] Review of Particle Physics [J].

The European Physical Journal C - Particles and Fields, 1998, 3 (1-4) :1-783

[7] Lattice calculation of the strangeness magnetic moment of the nucleon [J].

Dong, SJ ;

Liu, KF ;

Williams, AG .

PHYSICAL REVIEW D, 1998, 58 (07)

[8] Strange hadronic loops of the proton: A quark model calculation [J].

Geiger, P ;

Isgur, N .

PHYSICAL REVIEW D, 1997, 55 (01) :299-310

[9] Spectral content of isoscalar nucleon form factors [J].

Hammer, HW ;

Ramsey-Musolf, MJ .

PHYSICAL REVIEW C, 1999, 60 (04) :15

[10] The strangeness radius and magnetic moment of the nucleon revisited [J].

Hammer, HW ;

Meisner, UG ;

Drechsel, D .

PHYSICS LETTERS B, 1996, 367 (1-4) :323-328

← 1 2 3 4 →