Strange Quark Contributions to Parity-Violating Asymmetries in the Backward Angle G0 Electron Scattering Experiment

被引：119

作者：

Androic, D. ^{[1
]}

Armstrong, D. S. ^{[2
]}

Arvieux, J. ^{[3
]}

Bailey, S. L. ^{[2
]}

Beck, D. H. ^{[4
]}

Beise, E. J. ^{[5
]}

Benesch, J. ^{[6
]}

Benmokhtar, F. ^{[5
,7
]}

Bimbot, L. ^{[3
]}

Birchall, J. ^{[8
]}

Bosted, P.

Breuer, H. ^{[5
]}

Capuano, C. L. ^{[2
]}

Chao, Y. -C. ^{[6
]}

Coppens, A. ^{[8
]}

Davis, C. A. ^{[9
]}

Ellis, C. ^{[5
]}

Flores, G. ^{[10
]}

Franklin, G. ^{[7
]}

Furget, C. ^{[11
]}

Gaskell, D. ^{[6
]}

Gericke, M. I. W. ^{[8
]}

Grames, J. ^{[6
]}

Guillard, G. ^{[11
]}

Hansknecht, J. ^{[6
]}

Horn, T. ^{[6
]}

Jones, M. ^{[6
]}

King, P. M. ^{[12
]}

Korsch, W. ^{[13
]}

Kox, S. ^{[11
]}

Lee, L. ^{[8
]}

Liu, J. ^{[14
]}

Lung, A. ^{[6
]}

Mammei, J. ^{[15
]}

Martin, J. W. ^{[16
]}

McKeown, R. D. ^{[14
]}

Mihovilovic, M. ^{[17
]}

Micherdzinska, A. ^{[16
]}

Mkrtchyan, H. ^{[18
]}

Muether, M. ^{[4
]}

Page, S. A. ^{[8
]}

Papavassiliou, V. ^{[10
]}

Pate, S. F. ^{[10
]}

Phillips, S. K. ^{[2
]}

Pillot, P. ^{[11
]}

Pitt, M. L. ^{[15
]}

Poelker, M. ^{[6
]}

Quinn, B. ^{[7
]}

Ramsay, W. D. ^{[8
]}

Real, J. -S. ^{[11
]}

机构：

[1] Univ Zagreb, Dept Phys, HR-41001 Zagreb, Croatia

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

[3] Univ Paris 11, Inst Phys Nucl Orsay, F-91406 Orsay, France

[4] Univ Illinois, Loomis Lab Phys, Urbana, IL 61801 USA

[5] Univ Maryland, Dept Phys, College Pk, MD 20742 USA

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

[7] Carnegie Mellon Univ, Dept Phys, Pittsburgh, PA 15213 USA

[8] Univ Manitoba, Dept Phys, Winnipeg, MB R3T 2N2, Canada

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

[10] New Mexico State Univ, Dept Phys, Las Cruces, NM 88003 USA

[11] Univ Grenoble 1, CNRS, IN2P3, LPSC,Inst Polytech Grenoble, Grenoble, France

[12] Ohio Univ, Dept Phys & Astron, Athens, OH 45701 USA

[13] Univ Kentucky, Dept Phys & Astron, Lexington, KY 40506 USA

[14] CALTECH, Kellogg Radiat Lab, Pasadena, CA 91125 USA

[15] Virginia Tech, Dept Phys, Blacksburg, VA 24061 USA

[16] Univ Winnipeg, Dept Phys, Winnipeg, MB R3B 2E9, Canada

[17] Jozef Stefan Inst, Ljubljana 1000, Slovenia

[18] Yerevan Phys Inst, Yerevan 375036, Armenia

[19] Louisiana Tech Univ, Dept Phys, Ruston, LA 71272 USA

[20] Hendrix Coll, Dept Phys, Conway, AR 72032 USA

来源：

PHYSICAL REVIEW LETTERS | 2010年 / 104卷 / 01期

基金：

美国国家科学基金会; 加拿大自然科学与工程研究理事会;

关键词：

FORM-FACTORS; NUCLEON; PROTON;

D O I：

10.1103/PhysRevLett.104.012001

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

We have measured parity-violating asymmetries in elastic electron-proton and quasielastic electron-deuteron scattering at Q(2) = 0.22 and 0.63 GeV2. They are sensitive to strange quark contributions to currents in the nucleon and the nucleon axial-vector current. The results indicate strange quark contributions of less than or similar to 10% of the charge and magnetic nucleon form factors at these four-momentum transfers. We also present the first measurement of anapole moment effects in the axial-vector cur-rent at these four-momentum transfers.

引用

页数：5

共 33 条

[1] Precision measurements of the nucleon strange form factors at Q2∼0.1 GeV2 [J].

Acha, A. ;

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. .

PHYSICAL REVIEW LETTERS, 2007, 98 (03)

[2]

ADAMS T, 2000, P SUPPL, V86, P93

[3] Measurement of parton distributions of strange quarks in the nucleon from charged-kaon production in deep-inelastic scattering on the deuteron [J].

Airapetian, A. ;

Akopov, N. ;

Akopov, Z. ;

Andrus, A. ;

Aschenauer, E. C. ;

Augustyniak, W. ;

Avakian, R. ;

Avetissian, A. ;

Avetissian, E. ;

Belostotski, S. ;

Bianchi, N. ;

Blok, H. P. ;

Boettcher, H. ;

Bonomo, C. ;

Borissov, A. ;

Bruell, A. ;

Bryzgalov, V. ;

Burns, J. ;

Capiluppi, M. ;

Capitani, G. P. ;

Cisbani, E. ;

Ciullo, G. ;

Contalbrigo, M. ;

Dalpiaz, P. F. ;

Deconinck, W. ;

De Leo, R. ;

Demey, M. ;

De Nardo, L. ;

De Sanctis, E. ;

Diefenthaler, M. ;

Di Nezza, P. ;

Dreschler, J. ;

Dueren, M. ;

Ehrenfried, M. ;

Elalaoui-Moulay, A. ;

Elbakian, G. ;

Ellinghaus, F. ;

Elschenbroich, U. ;

Fabbri, R. ;

Fantoni, A. ;

Felawka, L. ;

Frullani, S. ;

Funel, A. ;

Gabbert, D. ;

Gapienko, G. ;

Gapienko, V. ;

Garibaldi, F. ;

Gavrilov, G. ;

Gharibyan, V. ;

Giordano, F. .

PHYSICS LETTERS B, 2008, 666 (05) :446-450

[4] 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)

[5] Measurement of Strange Quark Contributions to the Vector Form Factors of the Proton at Q2=0.22 (GeV/c)2 [J].

Baunack, S. ;

Aulenbacher, K. ;

Rios, D. Balaguer ;

Capozza, L. ;

Diefenbach, J. ;

Glaeser, B. ;

von Harrach, D. ;

Imai, Y. ;

Kabuss, E. -M. ;

Kothe, R. ;

Lee, J. H. ;

Merkel, H. ;

Espi, M. C. Mora ;

Mueller, U. ;

Schilling, E. ;

Stephan, G. ;

Weinrich, C. ;

Arvieux, J. ;

El-Yakoubi, M. A. ;

Frascaria, R. ;

Kunne, R. ;

Maas, F. E. ;

Morlet, M. ;

Ong, S. ;

van de Wiele, J. ;

Kowalski, S. ;

Prok, Y. ;

Taylor, S. .

PHYSICAL REVIEW LETTERS, 2009, 102 (15)

[6] Parity-violating electron scattering and nucleon structure [J].

Beck, DH ;

McKeown, RD .

ANNUAL REVIEW OF NUCLEAR AND PARTICLE SCIENCE, 2001, 51 :189-217

[7] The SAMPLE experiment and weak nucleon structure [J].

Beise, E ;

Pitt, ML ;

Spayde, DT .

PROGRESS IN PARTICLE AND NUCLEAR PHYSICS, VOL 54, NO 1, 2004, 54 (01) :289-350

[8] Axial structure of the nucleon [J].

Bernard, V ;

Elouadrhiri, L ;

Meissner, UG .

JOURNAL OF PHYSICS G-NUCLEAR AND PARTICLE PHYSICS, 2002, 28 (01) :R1-R35

[9] Vector and axial nucleon form factors: A duality constrained parameterization [J].

Bodek, A. ;

Avvakumov, S. ;

Bradford, R. ;

Budd, H. .

EUROPEAN PHYSICAL JOURNAL C, 2008, 53 (03) :349-354

[10] The cryogenic target for the G0 experiment at Jefferson lab [J].

Covrig, SD ;

Beise, EJ ;

Carr, R ;

Gustafsson, KK ;

Hannelius, L ;

Herda, MC ;

Jones, CE ;

Liu, J ;

McKeown, RD ;

Neveling, R ;

Rauf, AW ;

Smith, G .

NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION A-ACCELERATORS SPECTROMETERS DETECTORS AND ASSOCIATED EQUIPMENT, 2005, 551 (2-3) :218-235

← 1 2 3 4 →