Precision measurement of the weak mixing angle in Moller scattering

被引：253

作者：

Anthony, PL ^{[1
]}

Arnold, RG

Arroyo, C

Bega, K

Biesiada, J

Bosted, PE

Bower, G

Cahoon, J

Carr, R

Cates, GD

Chen, JP

Chudakov, E

Cooke, M

Decowski, P

Deur, A

Emam, W

Erickson, R

Fieguth, T

Field, C

Gao, J

Gary, M

Gustafsson, K

Hicks, RS

Holmes, R

Hughes, EW

Humensky, TB

Jones, GM

Kaufman, LJ

Keller, L

Kolomensky, YG

Kumar, KS

LaViolette, P

Lhuillier, D

Lombard-Nelsen, RM

Marshall, Z

Mastromarino, P

McKeown, RD

Michaels, R

Niedziela, J

Olson, M

Paschke, KD

Peterson, GA

Pitthan, R

Relyea, D

Rock, SE

Saxton, O

Singh, J

Souder, PA

Szalata, ZM

Turner, J

机构：

[1] Stanford Linear Accelerator Ctr, Menlo Pk, CA 94025 USA

[2] Univ Calif Berkeley, Berkeley, CA 94720 USA

[3] CALTECH, Pasadena, CA 91125 USA

[4] Univ Massachusetts, Amherst, MA 01003 USA

[5] Princeton Univ, Princeton, NJ 08544 USA

[6] CEA Saclay, DAPINA, SPhN, F-91191 Gif Sur Yvette, France

[7] Smith Coll, Northampton, MA 01063 USA

[8] Syracuse Univ, Syracuse, NY 13244 USA

[9] Thomas Jefferson Lab, Newport News, VA 23606 USA

[10] Univ Virginia, Charlottesville, VA 22903 USA

来源：

PHYSICAL REVIEW LETTERS | 2005年 / 95卷 / 08期

关键词：

D O I：

10.1103/PhysRevLett.95.081601

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

We report on a precision measurement of the parity-violating asymmetry in fixed target electron-electron (Moller) scattering: A(PV)=[-131 +/- 14(stat)+/- 10(syst)]x10(-9), leading to the determination of the weak mixing angle sin(2)theta(W)(eff)=0.2397 +/- 0.0010(stat)+/- 0.0008(syst), evaluated at Q(2)=0.026 GeV2. Combining this result with the measurements of sin(2)theta(W)(eff) at the Z(0) pole, the running of the weak mixing angle is observed with over 6 sigma significance. The measurement sets constraints on new physics effects at the TeV scale.

引用

页数：5

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