Precision measurements of the nucleon strange form factors at Q2∼0.1 GeV2

被引：220

作者：

Acha, A. ^{[1
]}

Aniol, K. A.

Armstrong, D. S.

Arrington, J.

Averett, T.

Bailey, S. L.

Barber, J.

Beck, A.

Benaoum, H.

Benesch, J.

Bertin, P. Y.

Bosted, P.

Butaru, F.

Burtin, E.

Cates, G. D.

Chao, Y. -C.

Chen, J. -P.

Chudakov, E.

Cisbani, E.

Craver, B.

Cusanno, F.

De Leo, R.

Decowski, P.

Deur, A.

Feuerbach, R. J.

Finn, J. M.

Frullani, S.

Fuchs, S. A.

Fuoti, K.

Gilman, R.

Glesener, L. E.

Grimm, K.

Grames, J. M.

Hansen, J. O.

Hansknecht, J.

Higinbotham, D. W.

Holmes, R.

Holmstrom, T.

Ibrahim, H.

de Jager, C. W.

Jiang, X.

Katich, J.

Kaufman, L. J.

Kelleher, A.

King, P. M.

Kolarkar, A.

Kowalski, S.

Kuchina, E.

Kumar, K. S.

Lagamba, L.

机构：

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

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

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

[4] Argonne Natl Lab, Argonne, IL 60439 USA

[5] Univ Massachusetts, Amherst, MA 01003 USA

[6] MIT, Cambridge, MA 02139 USA

[7] Syracuse Univ, Syracuse, NY 13244 USA

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

[9] Univ Clermont Ferrand, CNRS, IN2P3, F-63177 Clermont Ferrand, France

[10] Temple Univ, Philadelphia, PA 19122 USA

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

[12] Univ Virginia, Charlottesville, VA 22904 USA

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

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

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

[16] Smith Coll, Northampton, MA 01063 USA

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

[18] Old Dominion Univ, Norfolk, VA 23529 USA

[19] Univ Illinois, Urbana, IL 61801 USA

[20] Univ Kentucky, Lexington, KY 40506 USA

[21] Russian Acad Sci, Inst Nucl Phys, Gatchina 188350, Russia

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

[23] Jozef Stefan Inst, Ljubljana 1000, Slovenia

[24] Duke Univ, TUNL, Durham, NC 27706 USA

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

[26] Harvard Univ, Cambridge, MA 02138 USA

[27] Univ Sci & Technol China, Anhua 230026, Peoples R China

[28] Inst Atom Energy, Beijing 102413, Peoples R China

来源：

PHYSICAL REVIEW LETTERS | 2007年 / 98卷 / 03期

关键词：

D O I：

10.1103/PhysRevLett.98.032301

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

We report new measurements of the parity-violating asymmetry A(PV) in elastic scattering of 3 GeV electrons off hydrogen and He-4 targets with <theta(lab)> approximate to 6.0 degrees. The He-4 result is A(PV) = (+6.40 +/- 0.23(stat) +/- 0.12(syst)) x 10(-6). The hydrogen result is A(PV) = (-1.58 +/- 0.12(stat) +/- 0.04(syst)) x 10(-6). These results significantly improve constraints on the electric and magnetic strange form factors G(E)(s) and G(M)(s). We extract G(E)(s) = 0.002 +/- 0.014 +/- 0.007 at < Q(2)> = 0.077 GeV2, and G(E)(s) + 0.09G(M)(s) = 0.007 +/- 0.011 +/- 0.006 at < Q(2)> = 0.109 GeV2, providing new limits on the role of strange quarks in the nucleon charge and magnetization distributions.

引用

页数：5

共 28 条

[1] Parity-violating electron scattering from 4He and the strange electric form factor of the nucleon -: art. no. 022003 [J].

Aniol, KA ;

Armstrong, DS ;

Averett, T ;

Benaoum, H ;

Bertin, PY ;

Burtin, E ;

Cahoon, J ;

Cates, GD ;

Chang, CC ;

Chao, YC ;

Chen, JP ;

Choi, S ;

Chudakov, E ;

Craver, B ;

Cusanno, F ;

Decowski, P ;

Deepa, D ;

Ferdi, C ;

Feuerbach, RJ ;

Finn, JM ;

Frullani, S ;

Fuoti, K ;

Garibaldi, F ;

Gilman, R ;

Glamazdin, A ;

Gorbenko, V ;

Grames, JM ;

Hansknecht, J ;

Higinbotham, DW ;

Holmes, R ;

Holmstrom, T ;

Humensky, TB ;

Ibrahim, H ;

de Jager, CW ;

Jiang, X ;

Kaufman, LJ ;

Kelleher, A ;

Kolarkar, A ;

Kowalski, S ;

Kumar, KS ;

Lambert, D ;

LaViolette, P ;

LeRose, J ;

Lhuillier, D ;

Liyanage, N ;

Margaziotis, DJ ;

Mazouz, M ;

McCormick, K ;

Meekins, DG ;

Meziani, ZE .

PHYSICAL REVIEW LETTERS, 2006, 96 (02)

[2] Constraints on the nucleon strange form factors at Q2∼0.1 GeV2 [J].

Aniol, KA ;

Armstrong, DS ;

Averett, T ;

Benaoum, H ;

Bertin, PY ;

Burtin, E ;

Cahoon, J ;

Gates, GD ;

Chang, CC ;

Chao, YC ;

Chen, JP ;

Choi, SH ;

Chudakov, E ;

Craver, B ;

Cusanno, F ;

Decowski, P ;

Deepa, D ;

Ferdi, C ;

Feuerbach, RJ ;

Finn, JM ;

Frullani, S ;

Fuoti, K ;

Garibaldi, F ;

Gilman, R ;

Glamazdin, A ;

Gorbenko, V ;

Grames, JM ;

Hansknecht, J ;

Higinbotham, DW ;

Holmes, R ;

Holmstrom, T ;

Humensky, TB ;

Ibrahim, H ;

de Jager, CW ;

Jiang, X ;

Kaufman, LJ ;

Kelleher, A ;

Kolarkar, A ;

Kowalski, S ;

Kumar, KS ;

Lambert, D ;

LaViolette, P ;

LeRose, J ;

Lhuillier, D ;

Liyanage, N ;

Margaziotis, DJ ;

Mazouz, M ;

McCormick, K ;

Meekins, DG ;

Meziani, ZE .

PHYSICS LETTERS B, 2006, 635 (5-6) :275-279

[3] Parity-violating electroweak asymmetry in (e)over-right-arrowp scattering -: art. no. 065501 [J].

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 ;

Fissum, K ;

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, TB ;

Incerti, S ;

Iodice, M ;

de Jager, CW ;

Jardillier, J ;

Jiang, X ;

Jones, MK ;

Jorda, J ;

Jutier, C ;

Kahl, W ;

Kelly, JJ .

PHYSICAL REVIEW C, 2004, 69 (06) :065501-1

[4] New measurement of parity violation in elastic electron-proton scattering and implications for strange form factors [J].

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 .

PHYSICS LETTERS B, 2001, 509 (3-4) :211-216

[5]

[Anonymous], 1959, J EXP THEOR PHYS+

[6] Strange-quark contributions to parity-violating asymmetries in the forward G0 electron-proton scattering experiment -: art. no. 092001 [J].

Armstrong, DS ;

Arvieux, J ;

Asaturyan, R ;

Averett, T ;

Bailey, SL ;

Batigne, G ;

Beck, DH ;

Beise, EJ ;

Benesch, J ;

Bimbot, L ;

Birchall, J ;

Biselli, A ;

Bosted, P ;

Boukobza, E ;

Breuer, H ;

Carlini, R ;

Carr, R ;

Chant, N ;

Chao, YC ;

Chattopadhyay, S ;

Clark, R ;

Covrig, S ;

Cowley, A ;

Dale, D ;

Davis, C ;

Falk, W ;

Finn, JM ;

Forest, T ;

Franklin, G ;

Furget, C ;

Gaskell, D ;

Grames, J ;

Griffioen, KA ;

Grimm, K ;

Guillon, B ;

Guler, H ;

Hannelius, L ;

Hasty, R ;

Allen, AH ;

Horn, T ;

Johnston, K ;

Jones, M ;

Kammel, P ;

Kazimi, R ;

King, PM ;

Kolarkar, A ;

Korkmaz, E ;

Korsch, W ;

Kox, S ;

Kuhn, J .

PHYSICAL REVIEW LETTERS, 2005, 95 (09)

[7] A coherent interpretation of the form factors of the nucleon in terms of a pion cloud and constituent quarks [J].

Friedrich, J ;

Walcher, T .

EUROPEAN PHYSICAL JOURNAL A, 2003, 17 (04) :607-623

[8] K(K)over-bar continuum and isoscalar nucleon form factors -: art. no. 045204 [J].

Hammer, HW ;

Ramsey-Musolf, MJ .

PHYSICAL REVIEW C, 1999, 60 (04) :8

[9] 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

[10] STRANGE MATRIX-ELEMENTS IN THE PROTON FROM NEUTRAL-CURRENT EXPERIMENTS [J].

KAPLAN, DB ;

MANOHAR, A .

NUCLEAR PHYSICS B, 1988, 310 (3-4) :527-547

← 1 2 3 →