Observation of (B)over-bar0→D0π0 and (B)over-bar0→D*0π0 -: art. no. 062001

被引：60

作者：

Coan, TE ^{[1
]}

Gao, YS

Liu, F

Maravin, Y

Narsky, I

Stroynowski, R

Ye, J

Artuso, M

Boulahouache, C

Bukin, K

Dambasuren, E

Mountain, R

Skwarnicki, T

Stone, S

Wang, JC

Mahmood, AH

Csorna, SE

Danko, I

Xu, Z

Bonvicini, G

Cinabro, D

Dubrovin, M

McGee, S

Bornheim, A

Lipeles, E

Pappas, SP

Shapiro, A

Sun, WM

Weinstein, AJ

Masek, G

Paar, HP

Mahapatra, R

Morrison, RJ

Nelson, HN

Briere, RA

Chen, GP

Ferguson, T

Tatishvili, G

Vogel, H

Adam, NE

Alexander, JP

Bebek, C

Berkelman, K

Blanc, F

Boisvert, V

Cassel, DG

Drell, PS

Duboscq, JE

Ecklund, KM

Ehrlich, R

机构：

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

[2] Syracuse Univ, Syracuse, NY 13244 USA

[3] Univ Texas Pan Amer, Edinburg, TX 78539 USA

[4] Vanderbilt Univ, Nashville, TN 37235 USA

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

[6] CALTECH, Pasadena, CA 91125 USA

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

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

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

[10] Cornell Univ, Ithaca, NY 14853 USA

[11] Univ Florida, Gainesville, FL 32611 USA

[12] Harvard Univ, Cambridge, MA 02138 USA

[13] Univ Illinois, Urbana, IL 61801 USA

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

[15] Inst Particle Phys, Ottawa, ON, Canada

[16] Univ Kansas, Lawrence, KS 66045 USA

[17] Univ Minnesota, Minneapolis, MN 55455 USA

[18] SUNY Albany, Albany, NY 12222 USA

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

[20] Univ Oklahoma, Norman, OK 73019 USA

[21] Univ Pittsburgh, Pittsburgh, PA 15260 USA

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

[23] Univ Rochester, Rochester, NY 14627 USA

来源：

PHYSICAL REVIEW LETTERS | 2002年 / 88卷 / 06期

关键词：

D O I：

10.1103/PhysRevLett.88.062001

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

We have studied the color-suppressed hadronic decays of neutral B mesons into the final states D-(*()0)pi(0). Using 9.67 x 10(6) B (B) over bar pairs collected with the CLEO detector, we observe the decays (B) over bar (0) --> D(0)pi(0) and (B) over bar (0) --> D*(0)pi(0) with the branching fraction B((B) over bar (0) --> D(0)pi(0)) = (2.74(-0.32)(+0.36) +/- 0.55) x 10(-4) and B((B) over bar (0) --> D*0pi0') = (2.20(-0.52)(+0.59) +/- 0.79) x 10(-4). The first error is statistical and the second systematic. The statistical significance of the D(0)pi(0) signal is 12.1sigma (5.9sigma for D*(0)pi(0)). Utilizing the (B) over bar (0) --> D-(*()0)pi(0) branching fractions we determine the strong phases delta(I,D(*)) between isospin 1/2 and 3/2 amplitudes in the Dpi and D*pi final states to be cosdelta(I,D) = 0.89 +/- 0.08 and cosdelta(I,D*) = 0.89 +/- 0.08, respectively.

引用

页码：1 / 062001

页数：5

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