Improved measurement of B(D+→μ+ν) and the pseudoscalar decay constant fD+ -: art. no. 251801

被引：120

作者：

Artuso, M ^{[1
]}

Boulahouache, C

Blusk, S

Butt, J

Dorjkhaidav, O

Li, J

Menaa, N

Mountain, R

Nandakumar, R

Randrianarivony, K

Redjimi, R

Sia, R

Skwarnicki, T

Stone, S

Wang, JC

Zhang, K

Csorna, SE

Bonvicini, G

Cinabro, D

Dubrovin, M

Lincoln, A

Briere, RA

Chen, GP

Chen, J

Ferguson, T

Tatishvili, G

Vogel, H

Watkins, ME

Rosner, JL

Adam, NE

Alexander, JP

Berkelman, K

Cassel, DG

Crede, V

Duboscq, JE

Ecklund, KM

Ehrlich, R

Fields, L

Gibbons, L

Gittelman, B

Gray, R

Gray, SW

Hartill, DL

Heltsley, BK

Hertz, D

Jones, CD

Kandaswamy, J

Kreinick, DL

Kuznetsov, VE

Mahlke-Krüger, H

机构：

[1] Syracuse Univ, Syracuse, NY 13244 USA

[2] Vanderbilt Univ, Nashville, TN 37235 USA

[3] Wayne State Univ, Detroit, MI 48202 USA

[4] Carnegie Mellon Univ, Pittsburgh, PA 15213 USA

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

[6] Cornell Univ, Ithaca, NY 14853 USA

[7] Univ Florida, Gainesville, FL 32611 USA

[8] George Mason Univ, Fairfax, VA 22030 USA

[9] Univ Illinois, Urbana, IL 61801 USA

[10] Carleton Univ, Ottawa, ON K1S 5B6, Canada

[11] Univ Kansas, Lawrence, KS 66045 USA

[12] Luther Coll, Decorah, IA 52101 USA

[13] Univ Minnesota, Minneapolis, MN 55455 USA

[14] Northwestern Univ, Evanston, IL 60208 USA

[15] SUNY Albany, Albany, NY 12222 USA

[16] Univ Oklahoma, Norman, OK 73019 USA

[17] Univ Pittsburgh, Pittsburgh, PA 15260 USA

[18] Univ Puerto Rico, Mayaguez, PR 00681 USA

[19] Purdue Univ, W Lafayette, IN 47907 USA

[20] Rensselaer Polytech Inst, Troy, NY 12180 USA

[21] Univ Rochester, Rochester, NY 14627 USA

[22] So Methodist Univ, Dallas, TX 75275 USA

来源：

PHYSICAL REVIEW LETTERS | 2005年 / 95卷 / 25期

关键词：

D O I：

10.1103/PhysRevLett.95.251801

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

We extract a relatively precise value for the decay constant of the D+ meson by measuring B(D+->mu(+)nu)=(4.40 +/- 0.66(-0.12)(+0.09))x10(-4) using 281 pb(-1) of data taken on the psi(3770) resonance with the CLEO-c detector. We find f(D)(+)=(222.6 +/- 16.7(-3.4)(+2.8)) MeV, and compare with current theoretical calculations. We also set a 90% confidence upper limit on B(D+-> e(+)nu)< 2.4x10(-5) which constrains new physics models.

引用

页数：5

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