A determination of the Cabibbo-Kobayashi-Maskawa parameter |Vus| using KL decays -: art. no. 181802

被引：61

作者：

Alexopoulos, T ^{[1
]}

Arenton, M

Barbosa, RF

Barker, AR

Bellantoni, L

Bellavance, A

Blucher, E

Bock, GJ

Cheu, E

Childress, S

Coleman, R

Corcoran, MD

Cox, B

Erwin, AR

Ford, R

Glazov, A

Golossanov, A

Graham, J

Hamm, J

Hanagaki, K

Hsiung, YB

Huang, H

Jejer, V

Jensen, DA

Kessler, R

Kobrak, HGE

Kotera, K

LaDue, J

Ledovskoy, A

McBride, PL

Monnier, E

Nelson, KS

Nguyen, H

Niclasen, R

Prasad, V

Qi, XR

Ramberg, EJ

Ray, RE

Ronquest, M

Santos, E

Shanahan, P

Shields, J

Slater, W

Smith, D

Solomey, N

Swallow, EC

Toale, PA

Tschirhart, R

Wah, YW

Wang, J

机构：

[1] Univ Wisconsin, Madison, WI 53706 USA

[2] Univ Arizona, Tucson, AZ 85721 USA

[3] Univ Calif Los Angeles, Los Angeles, CA 90095 USA

[4] Univ Calif San Diego, La Jolla, CA 92093 USA

[5] Univ Chicago, Enrico Fermi Inst, Chicago, IL 60637 USA

[6] Univ Colorado, Boulder, CO 80309 USA

[7] Elmhurst Coll, Elmhurst, IL 60126 USA

[8] Fermilab Natl Accelerator Lab, Batavia, IL 60510 USA

[9] Osaka Univ, Osaka 5600043, Japan

[10] Rice Univ, Houston, TX 77005 USA

[11] Univ Virginia, Dept Phys, Charlottesville, VA 22901 USA

[12] Univ Virginia, Inst Nucl & Particle Phys, Charlottesville, VA 22901 USA

[13] Univ Sao Paulo, Sao Paulo, Brazil

[14] CNRS, CPP Marseille, F-75700 Paris, France

来源：

PHYSICAL REVIEW LETTERS | 2004年 / 93卷 / 18期

基金：

美国国家科学基金会;

关键词：

D O I：

10.1103/PhysRevLett.93.181802

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

We present a determination of the Cabibbo-Kobayashi-Maskawa parameter \V-us\ based on new measurements of the six largest K-L branching fractions and semileptonic form factors by the KTeV (E832) experiment at Fermilab. We find \V-us\ = 0.2252+/-0.0008(KTeV)+/-0.0021(ext), where the errors are from KTeV measurements and from external sources. We also use the measured branching fractions to determine the CP violation parameter \eta(+-)\ = (2.228+/-0.005(KTeV)+/-0.009(ext)) x 10(-3).

引用

页码：181802 / 1

页数：4

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