Strange-quark contributions to parity-violating asymmetries in the forward G0 electron-proton scattering experiment

We have measured parity-violating asymmetries in elastic electron-proton scattering over the range of momentum transfers 0.12 < or =Q2 < or =1.0 GeV2. These asymmetries, arising from interference of the electromagnetic and neutral weak interactions, are sensitive to strange-quark contributions...

Full description

Saved in:

Bibliographic Details
Published in:	Physical review letters Vol. 95; no. 9; pp. 092001.1 - 092001.5
Main Authors:	ARMSTRONG, D. S, ARVIEUX, J, BIRCHALL, J, BISELLI, A, BASTED, P, BOUKOBZA, E, BREUER, H, CARLINI, R, CARS, R, CHANT, N, CHAR, Y.-C, CHATTOPADHYAY, S, ASATURYAN, R, CLARK, R, COVRIG, S, COWLEY, A, DALE, D, DAVIS, C, FALK, W, FINN, J. M, FOREST, T, FRANKLIN, G, FURGET, C, AVERETT, T, GASKELL, D, G RAMES, J, GRIFFIOEN, K. A, GRIMM, K, GUILLON, B, GULER, H, HANNELIUS, L, HASTY, R, HAWTHORNE ALLEN, A, HORN, T, BAILEY, S. L, JOHNSTON, K, JONES, M, K AMMEL, P, KAZIMI, R, KING, P. M, KOLARKAR, A, KORKMAZ, E, KORSCH, W, KOX, S, KUHN, J, BATIGNE, G, LACHNIET, J, LEE, L, LENOBLE, J, LIATARD, E, LIU, J, LOUPIAS, B, LUNG, A, MACLACHLAN, G. A, MARCHAND, D, MARTIN, J. W, BECK, D. H, BEISE, E. J, BENESCH, J, BIMBOT, L
Format:	Journal Article
Language:	English
Published:	Ridge, NY American Physical Society 26-08-2005
Subjects:	ASYMMETRY CEBAF ACCELERATOR ELECTROMAGNETIC FORM FACTORS ELECTRON-PROTON INTERACTIONS Exact sciences and technology HYDROGEN INTERFERENCE LIQUIDS MOMENTUM TRANSFER Nuclear Experiment P INVARIANCE PARITY Physics PHYSICS OF ELEMENTARY PARTICLES AND FIELDS PROTONS S QUARKS SPECTROMETERS WEAK INTERACTIONS Electron-proton scattering Strange particles Asymmetry Parity electromagnetic form factors P invariance electron-proton interactions electroweak theories
Online Access:	Get full text
Tags:	Add Tag No Tags, Be the first to tag this record!

Description
Summary:	We have measured parity-violating asymmetries in elastic electron-proton scattering over the range of momentum transfers 0.12 < or =Q2 < or =1.0 GeV2. These asymmetries, arising from interference of the electromagnetic and neutral weak interactions, are sensitive to strange-quark contributions to the currents of the proton. The measurements were made at Jefferson Laboratory using a toroidal spectrometer to detect the recoiling protons from a liquid hydrogen target. The results indicate nonzero, Q2 dependent, strange-quark contributions and provide new information beyond that obtained in previous experiments.
Bibliography:	ObjectType-Article-1 SourceType-Scholarly Journals-1 ObjectType-Feature-2 content type line 23
ISSN:	0031-9007 1079-7114
DOI:	10.1103/physrevlett.95.092001