Observation of B→φK and B→φK

被引：66

作者：

Brier, RA ^{[1
]}

Chen, GP

Ferguson, T

Vogel, H

Gritsan, A

Alexander, JP

Baker, R

Bebek, C

Berger, BE

Berkelman, K

Blanc, F

Boisvert, V

Cassel, DG

Drell, PS

Duboscq, JE

Ecklund, KM

Ehrlich, R

Gaidarev, P

Gibbons, L

Gittelman, B

Gray, SW

Hartill, DL

Heltsley, BK

Hopman, PI

Hsu, L

Jones, CD

Kandaswamy, J

Kreinick, DL

Lohner, M

Magerkurth, A

Meyer, TO

Mistry, NB

Nordberg, E

Palmer, M

Patterson, JR

Peterson, D

Riley, D

Romano, A

Thayer, JG

Urner, D

Valant-Spaight, B

Viehhauser, G

Warburton, A

Avery, P

Prescott, C

Rubiera, AI

Stoeck, H

Yelton, J

Brandenburg, G

Ershov, A

机构：

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

[2] Univ Colorado, Boulder, CO 80309 USA

[3] Cornell Univ, Ithaca, NY 14853 USA

[4] Univ Florida, Gainesville, FL 32611 USA

[5] Harvard Univ, Cambridge, MA 02138 USA

[6] Univ Illinois, Urbana, IL 61801 USA

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

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

[9] Ithaca Coll, Ithaca, NY 14850 USA

[10] Univ Kansas, Lawrence, KS 66045 USA

[11] Univ Minnesota, Minneapolis, MN 55455 USA

[12] SUNY Albany, Albany, NY 12222 USA

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

[14] Univ Oklahoma, Norman, OK 73019 USA

[15] Univ Pittsburgh, Pittsburgh, PA 15260 USA

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

[17] Univ Rochester, Rochester, NY 14627 USA

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

[19] Syracuse Univ, Syracuse, NY 13244 USA

[20] Univ Texas, Austin, TX 78712 USA

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

[22] Vanderbilt Univ, Nashville, TN 37235 USA

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

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

[25] CALTECH, Pasadena, CA 91125 USA

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

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

来源：

PHYSICAL REVIEW LETTERS | 2001年 / 86卷 / 17期

关键词：

D O I：

10.1103/PhysRevLett.86.3718

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

We have studied two-body charmless hadronic decays of R mesons into the final states phiK and phiK(*). Using 9.7 million B (B) over bar pairs collected with the CLEO II detector, we observe the decays B- --> phiK(-) and B-0 --> phiK(*0) with the following branching fractions: B(B- --> phiK(-)) = (5.5(-1.8)(+2.1) +/- 0.6) x 10(-6) and B(B-0 --> phiK(*0)) = (11.5(-3.7-1.7)(+4.5+1.8)) x 10(-6). We also see evidence for the decays B-0 --> phiK(0) and B- --> phiK(*-). However, since the statistical significance is not overwhelming for these modes, we determine upper limits of < 12.3 x 10(-6) and < 22.5 x 10(-6) (90% confidence level), respectively.

引用

页码：3718 / 3721

页数：4

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