First observation of the Cabibbo suppressed decay B+→(D)over-bar0K+

被引：32

作者：

Athanas, M ^{[1
]}

Avery, P

Jones, CD

Lohner, M

Patton, S

Prescott, C

Yelton, J

Zheng, J

Brandenburg, G

Briere, RA

Ershov, A

Gao, YS

Kim, DYJ

Wilson, R

Yamamoto, H

Browder, TE

Li, Y

Rodriguez, JL

Bergfeld, T

Eisenstein, BI

Ernst, J

Gladding, GE

Gollin, GD

Hans, RM

Johnson, E

Karliner, I

Marsh, MA

Palmer, M

Selen, M

Thaler, JJ

Edwards, KW

Bellerive, A

Janicek, R

MacFarlane, DB

Patel, PM

Sadoff, AJ

Ammar, R

Baringer, P

Bean, A

Besson, D

Coppage, D

Darling, C

Davis, R

Kotov, S

Kravchenko, I

Kwak, N

Zhou, L

Anderson, S

Kubota, Y

Lee, SJ

机构：

[1] Univ Florida, Gainesville, FL 32611 USA

[2] Harvard Univ, Cambridge, MA 02138 USA

[3] Univ Hawaii Manoa, Honolulu, HI 96822 USA

[4] Univ Illinois, Urbana, IL 61801 USA

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

[6] McGill Univ, Montreal, PQ H3A 2T8, Canada

[7] Ithaca Coll, Ithaca, NY 14850 USA

[8] Univ Kansas, Lawrence, KS 66045 USA

[9] Univ Minnesota, Minneapolis, MN 55455 USA

[10] SUNY Albany, Albany, NY 12222 USA

[11] Ohio State Univ, Columbus, OH 43210 USA

[12] Univ Oklahoma, Norman, OK 73019 USA

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

[14] Univ Rochester, Rochester, NY 14627 USA

[15] Stanford Univ, Stanford Linear Accelerator Ctr, Stanford, CA 94309 USA

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

[17] Syracuse Univ, Syracuse, NY 13244 USA

[18] Vanderbilt Univ, Nashville, TN 37235 USA

[19] Virginia Polytech Inst & State Univ, Blacksburg, VA 24061 USA

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

[21] CALTECH, Pasadena, CA 91125 USA

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

[23] Univ Calif Santa Barbara, Santa Barbara, CA 93106 USA

[24] Univ Colorado, Boulder, CO 80309 USA

[25] Cornell Univ, Ithaca, NY 14853 USA

[26] Univ Calif Lawrence Livermore Natl Lab, Livermore, CA 94551 USA

[27] BINP, RU-630090 Novosibirsk, Russia

[28] Yonsei Univ, Seoul 120749, South Korea

[29] Brookhaven Natl Lab, Upton, NY 11973 USA

[30] Univ Texas, Austin, TX 78712 USA

来源：

PHYSICAL REVIEW LETTERS | 1998年 / 80卷 / 25期

关键词：

D O I：

10.1103/PhysRevLett.80.5493

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

We have observed the decay B+ --> (D) over bar(0)K(+), using 3.3 x 10(6) <B(B)over bar> pairs collected with the CLEO II detector at the Cornell Electron Storage Ring. We find the ratio of branching fractions R = B(B+ --> (D) over bar(0)K(+))/B(B+ --> (D) over bar(0)pi(+)) = 0.055 +/- 0.014 +/- 0.005.

引用

页码：5493 / 5497

页数：5

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